Huge scale generation of cement is creating environmental issue on one hand and depletion of natural resources on the other hand. This danger to nature has prompted research being made of industrial byproducts as supplementary cementetious materials in making concrete for more green and durable. Fly ash and silica fume both are pozzolanic materials which have been broadly utilized for improving the properties like strength and durability in concrete. Silica fume demonstrates the greater pozzolanic activity then fly ash because of its finer particle size distribution, the pozzolanic activity of fly ash also can be enhanced by decreasing the particle size distribution. Geopolymer is a class of aluminosilicate binding materials integrated by thermal action of solid aluminosilicate based materials such as metakoaline, GGBFS, fly ash. Geopolymer get activated with the alkaline solution and heat. Sodium hydroxide and sodium silicate were utilized as an alkaline solution with a steady ratio of 2.5 and the mix is designed for molarity 10 for the work carried out. In the present study, an attempt has been made to explore the geopolymer concrete by utilizing ultrafine fly ash (UFFA) produced by air classification and processed GGBFS with varied proportions. Discusses on the properties of geopolymer concrete has also been mentioned. Compressive strength and durability tests like Permeability, Abrasion, Sorptivity, Acid and sulphate attack, Drying shrinkage were conducted. In this work geopolymer concrete was prepared with varying proportions of GGBS and UFFA in the ratio of 92.5:7.5 and 88:12 and 80:20. The maximum strength was achieved for the ratio 92.5:7.5. The obtained compressive strength is in the range of 36.5MPa to 91.6MPa from 1st day to 28th day of hot curing.
Experimental study on geopolymer concrete by using ggbseSAT Journals
Abstract
The demand of concrete is increasing day by day and Cement is used for satisfying the need of development of infrastructure facilities, 1 tone cement production generates 1 tone CO2, which adversely affect the environment . In order to reduce the use of OPC and CO2 generation, the new generation concrete has been developed such as GEOPOLYMER CONCRETE. It uses Fly ash and Alkaline Solution as their Binding Materials. Geopolymer requires Oven Curing in the varying range of 60C to 100C for a period of 24 to 96 hours.
The objective of the present work is to study the effect of GGBS in fly ash based Geopolymer concrete and to study the Effect of Oven Curing and Ambient room temperature curing on them. And By replacing fly ash from 0 to 100% with GGBS and inspecting the Fresh Properties and Hardened Concrete properties at 7 days. The casted cube will be cured at normal room temperature and at 700C Oven heat provision for 24 hours and to ascertain the behavior of concrete mixed with GGBS, thereby examining the changes of properties like Strength and Durability.
Keywords: Fly ash, GGBS, Alkaline Solution, strength, durability, utilization
STUDY OF BEHAVIOUR OF GEO-POLYMER CONCRETE WITH RESPECT TO ITS MECHANICAL PRO...IAEME Publication
The primary object of the work is to observe the mechanical properties of geopolymer
concrete with GGBS and FLYASH. Now-a-days the carbon oxide emission is a lot of within the
atmosphere, which leads to warming and atmospheric phenomenon. Hence, for the purpose of
reducing the emissions, the consequences of industrial waste are being used for geopolymer
concrete like GBBS and Flyash. Sodium hydroxide and Sodium Silicate (NAOH and Na2SiO3)
area unit used as basic activators. The molarity of Sodium hydroxide is 10M and 12M.The ratio
of basic activators are1:2.Having similar properties to cement concrete and attaining equal
strength, the geopolymer concrete reduces greenhouse emission. The proportions used are 100%
GGBS, 75% GGBS & 25% fly ash, 50% GGBS & 50% fly ash, 25% GGBS & 75% fly ash. The
ambient natural process at space temperature is completed for an amount of seven and twenty
eight days. The mechanical properties have been identified by compressive, flexural, split tensile
strength tests through which the results are compared for 10 M and 12 M.
Experimental Investigation on Ferro-Geopolymer Flat PanelsSuhail Shaikh
To find out the effective utilization of the abundant quantity of Indian fly ash polluting the environment.
To find out the suitability of quarry sand as a fine aggregate.
To determine the suitability of Geopolymer mortar in practical application of the Civil Engineering Field.
Geopolymer concrete is an innovative, eco-friendly construction material.
It is used as replacement of cement concrete.
In geopolymer concrete cement is not used as a binding material.
Fly ash, silica-fume, or GGBS, along with alkali solution are used as binders.
STUDY ON BEHAVIOR OF ALKALI ACTIVATED FLYASH BASED GEOPOLYMER CONCRETEIAEME Publication
Objectives: This study is to identify the effect of parameter such as Activator ratio that affects the properties of alkali activated fly ash-based geopolymer concrete.
Methodology: To achieve the above objectives, the present investigation is adopted a technology that is currently in use to manufacture and to test the conventional concrete. The main aim of this activity was to facilitate promotion of new materials later on to the concrete industry. Research variable included activator ratio (1:2, 1:2.5, and 1:3). The trial mix is prepared for the molarity of 16 M. Concrete specimens were cured at room temperature. The response variables are Flexural strength, Compressive strength and Split tensile strength.
Findings: Test data are used to identify the variation of Geopolymer concrete properties which are affected by using of various activator ratios and curing period. At all ages, the activator ratio 1:3 gives maximum strength and also economical when compared to other two activator ratios. There is substantial gain in compressive strength of fly ash based geopolymer concrete with age.
Improvements: This work can be enhanced for various molarities under various temperatures and various activator ratios.
Experimental study on geopolymer concrete by using ggbseSAT Journals
Abstract
The demand of concrete is increasing day by day and Cement is used for satisfying the need of development of infrastructure facilities, 1 tone cement production generates 1 tone CO2, which adversely affect the environment . In order to reduce the use of OPC and CO2 generation, the new generation concrete has been developed such as GEOPOLYMER CONCRETE. It uses Fly ash and Alkaline Solution as their Binding Materials. Geopolymer requires Oven Curing in the varying range of 60C to 100C for a period of 24 to 96 hours.
The objective of the present work is to study the effect of GGBS in fly ash based Geopolymer concrete and to study the Effect of Oven Curing and Ambient room temperature curing on them. And By replacing fly ash from 0 to 100% with GGBS and inspecting the Fresh Properties and Hardened Concrete properties at 7 days. The casted cube will be cured at normal room temperature and at 700C Oven heat provision for 24 hours and to ascertain the behavior of concrete mixed with GGBS, thereby examining the changes of properties like Strength and Durability.
Keywords: Fly ash, GGBS, Alkaline Solution, strength, durability, utilization
STUDY OF BEHAVIOUR OF GEO-POLYMER CONCRETE WITH RESPECT TO ITS MECHANICAL PRO...IAEME Publication
The primary object of the work is to observe the mechanical properties of geopolymer
concrete with GGBS and FLYASH. Now-a-days the carbon oxide emission is a lot of within the
atmosphere, which leads to warming and atmospheric phenomenon. Hence, for the purpose of
reducing the emissions, the consequences of industrial waste are being used for geopolymer
concrete like GBBS and Flyash. Sodium hydroxide and Sodium Silicate (NAOH and Na2SiO3)
area unit used as basic activators. The molarity of Sodium hydroxide is 10M and 12M.The ratio
of basic activators are1:2.Having similar properties to cement concrete and attaining equal
strength, the geopolymer concrete reduces greenhouse emission. The proportions used are 100%
GGBS, 75% GGBS & 25% fly ash, 50% GGBS & 50% fly ash, 25% GGBS & 75% fly ash. The
ambient natural process at space temperature is completed for an amount of seven and twenty
eight days. The mechanical properties have been identified by compressive, flexural, split tensile
strength tests through which the results are compared for 10 M and 12 M.
Experimental Investigation on Ferro-Geopolymer Flat PanelsSuhail Shaikh
To find out the effective utilization of the abundant quantity of Indian fly ash polluting the environment.
To find out the suitability of quarry sand as a fine aggregate.
To determine the suitability of Geopolymer mortar in practical application of the Civil Engineering Field.
Geopolymer concrete is an innovative, eco-friendly construction material.
It is used as replacement of cement concrete.
In geopolymer concrete cement is not used as a binding material.
Fly ash, silica-fume, or GGBS, along with alkali solution are used as binders.
STUDY ON BEHAVIOR OF ALKALI ACTIVATED FLYASH BASED GEOPOLYMER CONCRETEIAEME Publication
Objectives: This study is to identify the effect of parameter such as Activator ratio that affects the properties of alkali activated fly ash-based geopolymer concrete.
Methodology: To achieve the above objectives, the present investigation is adopted a technology that is currently in use to manufacture and to test the conventional concrete. The main aim of this activity was to facilitate promotion of new materials later on to the concrete industry. Research variable included activator ratio (1:2, 1:2.5, and 1:3). The trial mix is prepared for the molarity of 16 M. Concrete specimens were cured at room temperature. The response variables are Flexural strength, Compressive strength and Split tensile strength.
Findings: Test data are used to identify the variation of Geopolymer concrete properties which are affected by using of various activator ratios and curing period. At all ages, the activator ratio 1:3 gives maximum strength and also economical when compared to other two activator ratios. There is substantial gain in compressive strength of fly ash based geopolymer concrete with age.
Improvements: This work can be enhanced for various molarities under various temperatures and various activator ratios.
COMPARATIVE STUDY OF COMPRESSIVE STRENGTH AND DURABILITY PROPERTIES ON GEOPOL...Journal For Research
The usage of practical advancement in structural building society has prompted the utilization of new materials with low environmental effects. One of the most commonly used construction material in the world is concrete, which is normally produced by OPC. However, the production of OPC has prompted ecological worries over the creation of CO2. Almost to create 1 ton of OPC 1 ton of CO2 is discharged to the atmosphere. With a specific end goal to diminish the utilization of OPC and CO2, the new concrete has been created, that is GEOPOLYMER CONCRETE. Latest research has demonstrated that it is conceivable to utilize fly ash or slag as a binder in concrete by activating them with alkali components through a polymerization procedure. This paper reports the point of interest of the test work that has been embraced to examine the strength and durability properties of ultra-fine slag and processed fly ash mortar mixes. At first specimens were casted for normal GGBS and fly ash in the ratio of 100:0, 75:25, 50:50, 25:75 and later for the best ratio (75:25), GGBS is replaced by ultra-fine GGBS by 7.5, 12 and 20%. Samples were compared with cured at ambient temperature and oven curing. The results showed that mix proportion of 20% replacement of ultra-fine GGBS gave the maximum strength for both oven and ambient curing (76.2 and 91.1 MPa). Even all the durability properties are within the permissible limits.
STRENGTH AND DURABILITY STUDY OF GROUND GRANULATED BLAST FURNACE SLAG BASED G...Shoaib Wani
Ordinary Portland cement is recognized as a major construction material.
GGBS can improve the durability of a concrete structure by reducing the water permeability, increasing the corrosion resistance and sulphate resistance.
The improved properties can extend the service life of structures and reduce the overall maintenance costs.
The primary objective is to study the strength and durability of geopolymer concrete
To study the strength and durability parameters of GGBS based geopolymer concrete.
EXPERIMENTAL STUDIES ON PROPERTIES OF GEOPOLYMER CONCRETE WITH GGBS AND FLY ASHIAEME Publication
Objective: This paper manages the quality properties of geopolymer concrete. The primary point of this anticipate is to utilize ground granulated impact heater slag and fly fiery remains set up of common Portland concrete, keeping in mind the end goal to decrease carbon dioxide emanation. Method: From this, we can look at the properties of geopolymer concrete with bond concrete. The fixings utilized as a part of this anticipate are GGBS and Fly cinder. Sodium hydroxide and sodium silicate are utilized as basic activators. The molarity of sodium hydroxide is 8M and 10M. The proportion of soluble activators is 1:2. Calcium silicate is framed when GGBS gets responded with sodium hydroxide and sodium silicate. This calcium silicate goes about as a cover for coarse total and fine total. Findings: The response is said to be exothermic since the warmth is developed when calcium silicate is framed. Henceforth, the underlying warmth is not required to begin the polymerization procedure. The fly fiery remains and GGBS are supplanted in 5 distinctive extents (100% GGBS, 75% GGBS &25% Fly cider, half GGBS &50% Fly slag, 25% GGBS&75% Fly powder,). The curing is finished by putting examples at room temperature. Application: The examples are tried at 7 years old and 28 days, the test incorporates compressive quality, split elasticity, and flexure quality to contrast the outcomes and bond concrete.
Ordinary Portland Cement (OPC) production produces
substantial CO2 emission. Geopolymer Concrete (GPC)
will be of considerable cure to Global Warming related
with construction industry since GPC replaces OPC
completely or about 80% with industrial waste products. In
this study GPC was made up of Ground Granulated Blast
furnace Slag (GGBS) and Red Mud (RM) incorporating
hybrid fibres in various ratios. Results show that, among
all the mixes, one mix showed the best mechanical
properties owing to the incorporation of hybrid fibres
and reduction of Red Mud.
Experimental Study on Partial Replacement of Cement by Flyash and GGBSijsrd.com
This paper presents a laboratory investigation on optimum level of Fly ash and Ground Granulated Blast Furnace Slag (GGBS) as a partial replacement of cement to study the strength characteristics of concrete. Portland cement was partially replaced by 5%, 6%, 7%, 8%, 9%, 10% of GGBS and Fly ash by 20%, 40%, 60% respectively. The water to cementations materials ratio was maintained at 0.45 for all mixes. The strength characteristics of the concrete were evaluated by conducting Compressive strength test, Splitting Tensile strength test and Flexural strength test. The compression strength test were conducted for 7days and 28days of curing and split tensile strength test and flexural strength test were conducted for 28days of curing on a M25 grade concrete. The mix proportion M25 was found to be 1:1.36:2.71.The test results proved that the compressive strength, split tensile strength and flexural strength of concrete mixtures containing GGBS and Fly ash increases as the amount of GGBS and Fly ash increase. After an optimum point, at around 9% of GGBS and 40% of Fly ash of the total binder content, the further addition of GGBS and fly ash does not improve the compressive strength, split tensile strength and flexural strength.
CHALLENGES FOR SUCCESSFUL COMMERCIALISATION OF FLY ASH - GGBS GEOPOLYMER BINDERIAEME Publication
Traditionally used Ordinary Portland Cement (OPC) is becoming less appealing in the construction field due to some major drawbacks such as depletion of natural resources at a faster pace, high demand for Embodied Energy (EE) during its manufacture and massive Embodied CO2 emission (ECO2e) to the environment. In pursuit for an alternative to OPC based concrete, alkaline activated alumino-silicate based inorganic polymer binders, popularly known as geopolymer binders, are being considered as a more sustainable solution. Since 1970’s geopolymer binders are used in combination with OPC as partial substitutes but it has not yet gained momentum as a commercially viable alternative to completely substitute OPC for every application. Obstacles in the commercialization of Geopolymer concrete (GPC) are many even though it has several engineering merits and plays a role in recycling industrial waste. In this short communication, we have made every attempt to address these limitations based on our practical experience. We have also made some recommendations to overcome those barriers.
The geopolymer cement is formed by polymerization process which involves the reaction between an aluminosilicate source material such as fly-ash, GGBS, etc. with an alkaline activator solutions.
RESIDUAL COMPRESSIVE STRENGTH OF TERNARY BLENDED CONCRETE AT ELEVATED TEMPERA...Ijripublishers Ijri
The extensive use of concrete as a structural material for the high rise buildings, storage tanks, nuclear reactors and
pressure vessels increase the risk of concrete being exposed to high temperatures. This has led to a demand to improve
the understanding of the effect of temperature on concrete. The behavior of concrete exposed to high temperature is a
result of many factors including the exposed environment and constituent materials.
Concrete structures are exposed to fire when a fire accident occurs. Damage in concrete structures due to fire depends
to a great extent on the intensity and duration of fire. The distress in the concrete manifests in the form of cracking and
spalling of the concrete surface.
CLOUD ANALYTICS: AN INSIGHT ON DATA AND STORAGE SERVICES IN MICROSOFT AZUREJournal For Research
The growing demand of cloud adoption in the organizations has made IT business to refine their existing strategy. It is important to leverage the existing infrastructure and move the data to cloud which has a competitive edge in terms of operational cost. The adaptability to change is the key and with the agility through cloud, highly scalable and data availability with minimal downtime at enterprise is established. Microsoft Azure is one of the leading cloud vendors in the market and their capabilities in Analytics, Data and Storage services helps the organizations to move their data to cloud with ease. They provide hybrid cloud model with related services which enable flexibility to meet any specific business needs with instant scalability and flexible architectural patterns. There are catalog of services offered by Microsoft Azure to have the data on cloud and build an integrated solution. In this paper, Azure cloud data and storage services are discussed along with other essential capabilities providing value to business.
COMPARATIVE STUDY OF COMPRESSIVE STRENGTH AND DURABILITY PROPERTIES ON GEOPOL...Journal For Research
The usage of practical advancement in structural building society has prompted the utilization of new materials with low environmental effects. One of the most commonly used construction material in the world is concrete, which is normally produced by OPC. However, the production of OPC has prompted ecological worries over the creation of CO2. Almost to create 1 ton of OPC 1 ton of CO2 is discharged to the atmosphere. With a specific end goal to diminish the utilization of OPC and CO2, the new concrete has been created, that is GEOPOLYMER CONCRETE. Latest research has demonstrated that it is conceivable to utilize fly ash or slag as a binder in concrete by activating them with alkali components through a polymerization procedure. This paper reports the point of interest of the test work that has been embraced to examine the strength and durability properties of ultra-fine slag and processed fly ash mortar mixes. At first specimens were casted for normal GGBS and fly ash in the ratio of 100:0, 75:25, 50:50, 25:75 and later for the best ratio (75:25), GGBS is replaced by ultra-fine GGBS by 7.5, 12 and 20%. Samples were compared with cured at ambient temperature and oven curing. The results showed that mix proportion of 20% replacement of ultra-fine GGBS gave the maximum strength for both oven and ambient curing (76.2 and 91.1 MPa). Even all the durability properties are within the permissible limits.
STRENGTH AND DURABILITY STUDY OF GROUND GRANULATED BLAST FURNACE SLAG BASED G...Shoaib Wani
Ordinary Portland cement is recognized as a major construction material.
GGBS can improve the durability of a concrete structure by reducing the water permeability, increasing the corrosion resistance and sulphate resistance.
The improved properties can extend the service life of structures and reduce the overall maintenance costs.
The primary objective is to study the strength and durability of geopolymer concrete
To study the strength and durability parameters of GGBS based geopolymer concrete.
EXPERIMENTAL STUDIES ON PROPERTIES OF GEOPOLYMER CONCRETE WITH GGBS AND FLY ASHIAEME Publication
Objective: This paper manages the quality properties of geopolymer concrete. The primary point of this anticipate is to utilize ground granulated impact heater slag and fly fiery remains set up of common Portland concrete, keeping in mind the end goal to decrease carbon dioxide emanation. Method: From this, we can look at the properties of geopolymer concrete with bond concrete. The fixings utilized as a part of this anticipate are GGBS and Fly cinder. Sodium hydroxide and sodium silicate are utilized as basic activators. The molarity of sodium hydroxide is 8M and 10M. The proportion of soluble activators is 1:2. Calcium silicate is framed when GGBS gets responded with sodium hydroxide and sodium silicate. This calcium silicate goes about as a cover for coarse total and fine total. Findings: The response is said to be exothermic since the warmth is developed when calcium silicate is framed. Henceforth, the underlying warmth is not required to begin the polymerization procedure. The fly fiery remains and GGBS are supplanted in 5 distinctive extents (100% GGBS, 75% GGBS &25% Fly cider, half GGBS &50% Fly slag, 25% GGBS&75% Fly powder,). The curing is finished by putting examples at room temperature. Application: The examples are tried at 7 years old and 28 days, the test incorporates compressive quality, split elasticity, and flexure quality to contrast the outcomes and bond concrete.
Ordinary Portland Cement (OPC) production produces
substantial CO2 emission. Geopolymer Concrete (GPC)
will be of considerable cure to Global Warming related
with construction industry since GPC replaces OPC
completely or about 80% with industrial waste products. In
this study GPC was made up of Ground Granulated Blast
furnace Slag (GGBS) and Red Mud (RM) incorporating
hybrid fibres in various ratios. Results show that, among
all the mixes, one mix showed the best mechanical
properties owing to the incorporation of hybrid fibres
and reduction of Red Mud.
Experimental Study on Partial Replacement of Cement by Flyash and GGBSijsrd.com
This paper presents a laboratory investigation on optimum level of Fly ash and Ground Granulated Blast Furnace Slag (GGBS) as a partial replacement of cement to study the strength characteristics of concrete. Portland cement was partially replaced by 5%, 6%, 7%, 8%, 9%, 10% of GGBS and Fly ash by 20%, 40%, 60% respectively. The water to cementations materials ratio was maintained at 0.45 for all mixes. The strength characteristics of the concrete were evaluated by conducting Compressive strength test, Splitting Tensile strength test and Flexural strength test. The compression strength test were conducted for 7days and 28days of curing and split tensile strength test and flexural strength test were conducted for 28days of curing on a M25 grade concrete. The mix proportion M25 was found to be 1:1.36:2.71.The test results proved that the compressive strength, split tensile strength and flexural strength of concrete mixtures containing GGBS and Fly ash increases as the amount of GGBS and Fly ash increase. After an optimum point, at around 9% of GGBS and 40% of Fly ash of the total binder content, the further addition of GGBS and fly ash does not improve the compressive strength, split tensile strength and flexural strength.
CHALLENGES FOR SUCCESSFUL COMMERCIALISATION OF FLY ASH - GGBS GEOPOLYMER BINDERIAEME Publication
Traditionally used Ordinary Portland Cement (OPC) is becoming less appealing in the construction field due to some major drawbacks such as depletion of natural resources at a faster pace, high demand for Embodied Energy (EE) during its manufacture and massive Embodied CO2 emission (ECO2e) to the environment. In pursuit for an alternative to OPC based concrete, alkaline activated alumino-silicate based inorganic polymer binders, popularly known as geopolymer binders, are being considered as a more sustainable solution. Since 1970’s geopolymer binders are used in combination with OPC as partial substitutes but it has not yet gained momentum as a commercially viable alternative to completely substitute OPC for every application. Obstacles in the commercialization of Geopolymer concrete (GPC) are many even though it has several engineering merits and plays a role in recycling industrial waste. In this short communication, we have made every attempt to address these limitations based on our practical experience. We have also made some recommendations to overcome those barriers.
The geopolymer cement is formed by polymerization process which involves the reaction between an aluminosilicate source material such as fly-ash, GGBS, etc. with an alkaline activator solutions.
RESIDUAL COMPRESSIVE STRENGTH OF TERNARY BLENDED CONCRETE AT ELEVATED TEMPERA...Ijripublishers Ijri
The extensive use of concrete as a structural material for the high rise buildings, storage tanks, nuclear reactors and
pressure vessels increase the risk of concrete being exposed to high temperatures. This has led to a demand to improve
the understanding of the effect of temperature on concrete. The behavior of concrete exposed to high temperature is a
result of many factors including the exposed environment and constituent materials.
Concrete structures are exposed to fire when a fire accident occurs. Damage in concrete structures due to fire depends
to a great extent on the intensity and duration of fire. The distress in the concrete manifests in the form of cracking and
spalling of the concrete surface.
CLOUD ANALYTICS: AN INSIGHT ON DATA AND STORAGE SERVICES IN MICROSOFT AZUREJournal For Research
The growing demand of cloud adoption in the organizations has made IT business to refine their existing strategy. It is important to leverage the existing infrastructure and move the data to cloud which has a competitive edge in terms of operational cost. The adaptability to change is the key and with the agility through cloud, highly scalable and data availability with minimal downtime at enterprise is established. Microsoft Azure is one of the leading cloud vendors in the market and their capabilities in Analytics, Data and Storage services helps the organizations to move their data to cloud with ease. They provide hybrid cloud model with related services which enable flexibility to meet any specific business needs with instant scalability and flexible architectural patterns. There are catalog of services offered by Microsoft Azure to have the data on cloud and build an integrated solution. In this paper, Azure cloud data and storage services are discussed along with other essential capabilities providing value to business.
The wi-fi energy transfer (WPT) is an emerging era with increasingly more ability packages to transfer energy from a transmitter to a cellular receiver over a noticeably huge air gap. but, its extensive utility is hampered due to the relatively low performance of modern wireless power switch (WPT) structures. This study gives an idea to maximize the performance in addition to to increase the quantity of extractable electricity of a WPT system operating in resonant operation. The proposed method is primarily based on actively modifying the equal secondary-side load impedance by controlling the section-shift of the active rectifier and its output voltage degree. The offered hardware prototype represents an entire wireless charging machine, consisting of a dc–dc converter that is used to price a battery at the output of the system. Experimental results are shown for the proposed concept in comparison to a traditional synchronous rectification approach. The supplied optimization technique sincerely outperforms trendy solutions in phrases of efficiency and extractable power.
Godrej The Suites is a group that prides itself on having developed millions of sq. ft. all over the country.
Godrej The Suites Greater Noida are wonderful villas and apartments, On the offer are 2,3, 4 and 5 BHK spaces.
Godrej The Suites Apartment offerings in the first phase total 400 flats in all.
Godrej The Suites Apartments in Greater Noida Sector 27 are beautiful masterpieces ideal for an idyllic and relaxed lifestyle.
The increase in the number of motorcycles in Indian cities is due to several factors such as traffic, low cost, mobility, few parking lots and the low efficiency of public transportation, becoming an important factor in air quality deterioration. In this context, vehicle emissions monitoring is essential to understand the contribution to air pollution as a whole. . The development of models for air pollution assessment has been identified as an important area for future research. Air pollution due to massive use of motor vehicles in urban areas of India is one of the most serious and the fastest growing problem to solve. These motor vehicles emit significant quantities of CO2, CO, hydrocarbons, oxides of nitrogen, SPM and other toxic substances in the atmosphere which adversely affect the environmental and the health. The objective of this study is to understand the chemistry of air pollution with its precise estimation through modeling. The behavior and relation between emission and deposition of pollutants can explain with the help of air quality models. Modeling is a set of different scientific methods that are helpful to analyse the nature and behavior of pollutants in the atmosphere. On the basis of source of pollutant air quality models are classified as point, area or line source models. Various Gaussian based line source models are commonly used in India to assess the impact of vehicular pollution along the roads or highways. The CO pollutant concentration values were compared with the National Ambient Air Quality Standards (NAAQS), and the CO values were predicted by using CALINE4 model. The possible association between CO pollutant concentration and traffic parameters like traffic flow, type of vehicle, and Roadway width was also evaluated.
ENERGY EFFICIENT VARIABLE SPEED HIGH POWER FACTOR THREE PHASE INDUCTION MOTOR...Journal For Research
Paper presents a new energy efficient technique of three phase AC to AC voltage control using medium frequency pulse width modulation and extinction angle control. This technique is deployed to obtain independent control on speed and power factor of the three phase induction motor, using four semiconductor controllable switches. The technique has been realized using AC freewheeling switch. Power factor (PF) of induction motor reduces as it depends on the load parameters, thus induction motor draws more current, increase stator copper losses. Increased stator copper losses of induction motor causes depreciation of power factor and efficiency. Proposed drive maintains power factor of induction motor at unity for controllable speed of the motor. Thus reduces current consumption of the motor at low speeds. Stator copper losses also reduce and efficiency of the motor is improved. Advantage of proposed drive is its higher efficiency and unity power factor with simplicity of control. .If number of motors are driven using the proposed drive, plenty of power conservation is possible.
AN ACTIVE PFC WITH FLYBACK DESIGN FOR INTELLIGENCE IN STREET LIGHT APPLICATIONJournal For Research
As the requirement of energy demand is increasing due to rapid industrial development, it is necessary to meet the growing demand of energy. This can be achieved in two ways: find alternate resource to supply power or energy; or reduce the energy consumption of present resources available. The proposed work is basically the design and implementation of an intelligent street light of 50 W power output from the offline converter by using power LED. As power LED draws huge non sinusoidal current due to the presence of AC-DC converter, a Boost PFC and a fly back converter is used for better power factor and for dc voltage regulation. Along with this a PIR sensor and LDR sensors are also used. A PIC microcontroller is used for PWM dimming. This makes to reduce the power consumption in street light especially in urban cities in which most of the power is wasted in lighting streets during late night.
A Review On Development Of Flyash Based High Strength Geopolymer Concretecedmmantc5411
Geopolymer concrete is the latest development in the field of concrete technology and it is still
developing. Geopolymers are inorganic, stable, hard and non-inflammable binder. The application of
geopolymer binder are in fire resistance fiber composite, sealant industry, tooling aeronautics SPF aluminium,
foundry equipment’s, radioactive toxic waste, ceramic, bricks and other precast concrete. The current review is
aims to put forward the development in geopolymer concrete for the production high strength geopolymer
concrete having strength more than 90MPa. The development of high strength concrete is aimed to reduce
structural member sizes and for economical construction in case of long span bridges and tall buildings. Also
the use flyash in concrete to reduce green gas house emission into the atmosphere by reducing cement usage
Effect Of Curing Temperature And Curing Hours On The Properties Of Geo-Polyme...ijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Properties of Glass Fibre Reinforced Geopolymer ConcreteIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Effect of Alccofine and Fly Ash Addition on the Durability of High Performanc...ijsrd.com
The aim of this Study is to evaluate the performance of concrete (HPC) containing supplementary cementitious materials such as Fly ash & Alccofine. The necessity of high performance concrete is increasing because of demands in the construction industry. Efforts for improving the performance of concrete over the past few years suggest that cement replacement materials along with Mineral & chemical admixtures can improve the strength and durability characteristics of concrete. Alccofine (GGBS) and Fly ash are pozzolanic materials that can be utilized to produce highly durable concrete composites. This study investigates the performance of concrete mixture containing Local Alccofine. in terms of Compressive strength, Sulphate Attack tests, Alkali test and RCPT (Rapid chloride penetration test) at age of 28 and 56 days. In addition find out the optimum dosage of alccofine and fly ash from that get M70 Strength, in final mix proportion perform a given test. Result show that concrete incorporating Alccofine and fly ash had higher compressive strength and alccofine enhanced the durability of concretes and reduced the chloride diffusion. An exponential relationship between chloride permeability and compressive strength of concrete is exhibited.
An Experimental Investigation on GGBSand Flyash Based Geopolymer Concrete wit...IJERA Editor
Extensive research is currently going on to evaluate geo-polymer in civil engineering application. The project aims at making ecofriendly concrete and increasing the strength of the concrete. Cement, the second most consumed product in the world, 5% – 8% of world’s man made greenhouse gas emission are from the cement industry itself. It is well known that cement production depletes significant amount of natural resources and release of large volume of carbon dioxide. On the other hand, coal burning power plants produce huge quantities of fly ash. Most of the fly ash is considered as waste, dumped in landfills and GGBS exhibits cementitious as well as pozzolanic characteristics so it is quite right in choosing of fly ash and GGBS for concrete mix. Due to over exploitation of river sand for the construction, resulting in river bed erosion. So government frames more restrictions in exploiting them. In order to overcome this issue we use to replace river sand by quarry dust. Alkaline liquids are used as the binding materials, alkaline liquids used in this study for the polymerization are the solution of Sodium Hydroxide and Sodium Silicate, molarity of Sodium Hydroxide 10 M is taken to prepare different mixes. And the strength is calculated for each of the mix. Curing is done by placing specimens at room temperature. The specimen are tested at the age of 7, 14 and 28 days, the test includes compressive strength, split tensile strength and flexure strength. The test results shows that GGBS and Fly ash-based geopolymer concrete has excellent compressive strength and is suitable for structural applications.
A Study on Groundnut Husk Ash (GHA)–Concrete under Acid AttackIJMER
This paper presents the findings of an investigation on the compressive strength of
Groundnut Husk Ash (GHA)-Concrete and its resistance to acid attack. The GHA used was obtained
by controlled burning of groundnut husk to a temperature of 600 oC and sieved through 75 µm sieve
after allowing cooingl. The compressive strength of GHA-Concrete was investigated at replacement
levels of 0, 5, 10, 20, 30 and 40 %, respectively by weight of cement. A total of ninety 150 mm cubes of
GHA-Concrete grade 20 were tested for compressive strength at 3, 7, 28, 60 and 90 days of curing and
the microstructure of GHA-Concrete samples at 0 and 10 % replacements were examined at 28 and 90
days of curing. Also, thirty six 100 mm cubes were subjected to attack from 10 % concentration of
diluted solution of sulphuric acid (H2SO4) and nitric acid (HNO3), respectively. The result of the
investigations showed that the compressive strength of concrete decreased with increase in GHA
content. However 10 % replacement with GHA was considered as optimum for structural concrete.
GHA provided a less compact microstructure of concrete at 28 and 90 days curing compared to OPC
concrete as a result of low pozzolanic activity. The use of GHA in concrete improved its resistance
against sulphuric acid, but not against nitric acid attack. The average weight loss of GHA concrete
after 28 days of subjection in sulphuric acid and nitric acid were 16.3 % and 17.3 %, respectively as
opposed to 22.4 % and 15.1 %, respectively for plain Portland cement concrete.
Short term properties of High Calcium Flyashbased Geopolymer binderIOSRJMCE
The past decades of research is diverted primarily in making concrete without cement or atleast partially replacing by suitable alternatives. For its availability and problems associated with, flyash has been given priority to use in concrete in high volume or total replacement of cement resulting in geopolymer concrete using activated flyash of low calcium type as the source material. However, few are dealt on the high calcium flyash that too mainly on achieving the required compressive strength and not much on the short term engineering properties like consistency and setting characteristicseven though itis essential to establish the time available for placing, compaction and transport of geopolymer. Therefore, a fundamental study on the setting characteristics and strength development of high calcium flyash based geopolymer with varying concentration of Sodium hydroxide(8-14M),varying liquid ratios (1.5-3.0) of the activator and curing at ambient and 65oCtemperature is made.It is observed that the consistency of flyash based geopolymer increases with increase of concentration of NaOH and is not at all influenced by the liquid ratios considered but, the setting time is reduced by oven curing obviously. Also, the mortar strength is atleast 10% more for hot curing than ambient curing.
This paper presents part of the results of an ongoing laboratory study carried out to study on
strength and durability characteristics of ternary concrete made with and without ternary mixtures of
cement-fly ash- silica fume. In the present work an attempt has been made to study the strength
properties of ternary concrete in compression, tension and flexure and also durability aspects of
ternary blended concrete. In the investigation, M25 Grade concrete mix is designed with different
percentages of cementitious materials (5%, 7.5%, 10% & 12.5%) and tests are conducted for
compressive strength, split tensile strength and flexure strengths at 7, 28 and 56 days. Test results
indicate that the replacement of cement by 10% had attained a maximum strength in M25 Grade
concrete. The results obtained thus are encouraging for partial replacement.
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CHARACTERIZATION & DURABILITY PROPERTIES OF ULTRAFINE FLY ASH BASED GEOPOLYMER CONCRETE
1. Journal for Research| Volume 02| Issue 05 | July 2016
ISSN: 2395-7549
All rights reserved by www.journalforresearch.org 8
Characterization & Durability Properties of
Ultrafine Fly Ash based Geopolymer Concrete
Pruthvi Sagar Dinesh HT
M. Tech. Student Manager
Department of Civil Engineering Civil-Aid Techno Clinic Private Limited
Reva Institute of Technology and Management Bangalore-
560064, India
A Bureau Veritas Group Company Banasshankari 2nd stage,
Bangalore- 570070, India
Bhavana.B
Assistant Professor
Department of Civil Engineering
Reva Institute of Technology and Management Bangalore-560064, India
Abstract
Huge scale generation of cement is creating environmental issue on one hand and depletion of natural resources on the other
hand. This danger to nature has prompted research being made of industrial byproducts as supplementary cementetious materials
in making concrete for more green and durable. Fly ash and silica fume both are pozzolanic materials which have been broadly
utilized for improving the properties like strength and durability in concrete. Silica fume demonstrates the greater pozzolanic
activity then fly ash because of its finer particle size distribution, the pozzolanic activity of fly ash also can be enhanced by
decreasing the particle size distribution. Geopolymer is a class of aluminosilicate binding materials integrated by thermal action
of solid aluminosilicate based materials such as metakoaline, GGBFS, fly ash. Geopolymer get activated with the alkaline
solution and heat. Sodium hydroxide and sodium silicate were utilized as an alkaline solution with a steady ratio of 2.5 and the
mix is designed for molarity 10 for the work carried out. In the present study, an attempt has been made to explore the
geopolymer concrete by utilizing ultrafine fly ash (UFFA) produced by air classification and processed GGBFS with varied
proportions. Discusses on the properties of geopolymer concrete has also been mentioned. Compressive strength and durability
tests like Permeability, Abrasion, Sorptivity, Acid and sulphate attack, Drying shrinkage were conducted. In this work
geopolymer concrete was prepared with varying proportions of GGBS and UFFA in the ratio of 92.5:7.5 and 88:12 and 80:20.
The maximum strength was achieved for the ratio 92.5:7.5. The obtained compressive strength is in the range of 36.5MPa to
91.6MPa from 1st day to 28th day of hot curing.
Keywords: Geopolymer Concrete, Ultrafine Fly Ash, Metakoaline, GGBFS, Silica Fume
_______________________________________________________________________________________________________
I. INTRODUCTION
Cement is the primary component of concrete, it is estimated that production of one tone of OPC release around one tone of
carbon dioxide to the environment and the global cement release around 1.35 billion tons of gas emission annually, Similarly if
the production continuous till 2020, it is estimated that carbon dioxide emission will be rises 50% from the current level [2].
Supplementary Cementetious Materials (SCM)
In its most basic form, concrete is a mixture of Portland cement, sand, coarse aggregate and water. The principal cementetious
material in concrete is Portland cement. Today, most concrete mixtures contain supplementary cementetious materials that make
up a portion of the cementetious component in concrete. These materials are generally by products that are obtained from other
processes or by natural means. They may or may not be further processed for use in concrete. Some of these materials are called
pozzolans, an essentially siliceous material which while in it possessing little or no cementetious properties but, in finely divided
form and in the presence of water, react with calcium hydroxide at ambient temperature to form compounds possessing
cementetious properties. Other materials, such as slag, do exhibit cementetious properties. Some examples of these materials are
listed as below:
1) Fly Ash (Pulverized Fuel Ash)
2) GGBFS (Ground Granulated Blast Furnace Slag)
3) Metakaoline (An alumino silicate material)
4) Micro Silica (A silica rich product)
5) Ultra-fine Slag
2. Characterization & Durability Properties of Ultrafine Fly Ash based Geopolymer Concrete
(J4R/ Volume 02 / Issue 05 / 002)
All rights reserved by www.journalforresearch.org 9
Geopolymer Concrete
Davidovits was the first person that introduced the geopolymer concrete in 1988. In the beginning stages alkaline liquids are used
to react with silica and aluminum as bi product materials such as fly ash, silica fume. In the polymerization process fast chemical
reaction take place under alkali condition on silica and aluminum minerals which resulting three dimensional polymeric chains
and consisting of Si-O-Al-O ring like structure. Nowadays GPC is emerging as a good cement binder.
II. MATERIALS AND SAMPLE PREPARATION
The materials along with the geopolymer concrete have been utilized as a part of the experimental work are Ultra fine fly ash
(UFFA) JSW origin (0.10%LOI, 0.09%SO3, 64.68%SiO2, 23.84%Al2O3, 5.02%Fe2O3, 1.27%CaO, 0.86%MgO, 1.62%K2O,
0.33%Na2O), GGBS: JSW origin (0.35%insoluble residue, 35.28%SiO2, 16.82%Al2O3, 1.48%Fe2O3, 35.90%CaO, 8.08%MgO,
0.78%K2O, 0.34%Na2O), Fine aggregate: M-sand confirming to Zone-II of IS:383-1970 with a specific gravity 1.93, Coarse
aggregate: confirming to IS:383-1970 with a specific gravity 1.93, Alkaline liquids: sodium hydroxide(NaOH) having water
content 27.6%, 32.88%SiO3,17.02%Na2O, 14.12%K2O,1.18%Al2O3 sodium silicate (Na2SiO3) with specific gravity of 1.58.
Test samples were prepared as per IS standard, that is, cubes of (100X100X100) mm for compressive strength, For durability
tests the samples of (150X150X150) mm for durability test, for water permeability test moulds of (75X75X75) mm for acid and
sulphate attack test, (70x70)mm square specimen for abrasion test, (100mm diaX50mm height) for Rapid chloride penetration
test.
III. EXPERIMENTAL METHODS
Mix Design for Geopolymer Concrete
In the present design mix of geopolymer concrete, coarse aggregate and fine aggregate were taken as 77% of entire mix, coarse
aggregate and fine aggregate ratio were taken as 70%and30% respectively, density of concrete was taken as 2400kg/m3
similar to
that of OPC, The ratio of sodium silicate to sodium hydroxide is taken as 2.5. [2], Ratio of Alkaline liquid to Binder taken as 1.
Totally 7 different mix proportions are considered for the experimental work, table-2 shows different proportion of mix
Table – 1
Mix Design for Geopolymer Concrete
Material GGBS + UFFA Coarse Aggregate Fine Aggregate Alkaline Solution
Weights in Kg 276 1294 555 276
Table - 2
Different proportions of mix
Mix % GGBS % UFFA
GPC1 92.5 7.5
GPC2 88 12
GPC3 80 20
GPC4 100 0
GPC5 7.5 92.5
GPC6 12 88
GPC7 20 80
Preparation, Casting and Curing of GPC
The combination of sodium silicate and sodium hydroxide in ratio 2.5 was used as a alkaline solution for preparing GPC. The
concentration of sodium hydroxide as taken as 10M, for the preparation of 10M concentrated sodium hydroxide solution 400
gms of sodium hydroxide flakes were dissolved in one liter of water. The polymerization reaction takes place after mixing
sodium hydroxide and sodium silicate solution together which will liberate large amount of heat hence the alkaline solution was
used after 24 hours of mixing. To improve the workability of concrete Auromix 400plus was used as superplastisizer with a
dosage of 1.5% by mass of binder material. Mixing process can be handling with 5 min for each mix in mixer with proper dosage
of alkaline solution and super plasticizer. Normally the heat curing is recommended for the GPC because polymerization takes
place around 60ᵒC. Hence one set of specimen was kept for oven curing for three days with a temperature of 60ᵒC and another set
of specimens were kept for ambient curing.
3. Characterization & Durability Properties of Ultrafine Fly Ash based Geopolymer Concrete
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Fig. 1: Oven Curing Fig. 2: Ambient Curing
IV. EXPERIMENTAL RESULT AND DISCUSSION
Workability and Compressive Strength
Based on experimental work carried out for different percentage variations of GGBS and UFFA in geopolymer concrete the
result are expressed below. In the fresh geopolymer concrete workability was poor, and the mix was stiffer compared to POC
because of less amount of water content and also because sodium silicate is cohesive in nature.
Compressive strength test was carried out at the age of 1st
, 3rd
, 7th
and 28th
days according to IS 516-1959 using UTM having a
capacity of 2000kN testing machine with uniform rate of application of load. The average compressive strength of 3 cubes of all
the different proportions of GPC mix of normal (N) and heat (H) Curing are as show below
Table – 3
Average Compressive Strength
Mix 1
st
day 3rd
day 7th
day 28th
day
N N H N H N H
GPC1 9.77 20.07 33 26.57 44.33 60.7 83.1
GPC2 18.57 25.9 43.37 37.4 53.5 62.4 86.2
GPC3 20.63 40.27 48.67 48.1 60.1 68.5 87.8
GPC4 23.77 35 49.43 40.5 57.3 49.4 64.3
GPC5 36.5 55.6 70.2 74.4 87.5 78.9 91.6
GPC6 27.7 50.2 67.3 68.1 79.5 72.4 84.2
GPC7 26.4 46.03 63.42 59 67.06 65.4 73.4
Fig. 3: 3rd
day compressive strength Fig. 4: 7th
day compressive strength Fig. 5: 28th day compressive strength
The data illustrated in table-3, shows that the effect of ultra fine fly ash in strength development of GPC. With 100% GGBS
the strength attained is increasing from 23.77MPa to 64.3MPa for first to 28th
days of age, comparing with all the results obtained
for different proportion of GGBS and ultrafine fly ash GPC-5 attains a very good strength that is 35.6 MPa to 92.3MPa. It is
observed that increasing the percentage of GGBS the strength will decrease; optimum strength was achieved for the ratio 7.5 and
92.5 of GGBS and UFFR respectively. It is observed that GPC will attain early strength almost 30% of strength on in 1st
days
and around 80% strength on 7th
days
4. Characterization & Durability Properties of Ultrafine Fly Ash based Geopolymer Concrete
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Water Penetration Test
Fig. 6: Water penetration test result
From the result it is observed that GPC with ultrafine material will resist water penetration through the concrete, because of
small partial size distribution which helps for good bonding between the particles. Normally the depth of penetration should not
be more then 25mm but in GPC all the samples are within 15mm and, hence it can be concluded that less the depth of
penetration more is the durability of concrete
Abrasion Resistance Results
Fig. 7: Abrasion Resistance Results
This test is carried out to determine the abrasive resistance of the materials, as per standard the abrasion value is 2.5mm for the
commercial building and 3.5mm for residential buildings. From the result it is clear that all values are within 2.5mm hence GPC
is good in abrasion resistance. Less the abrasion value more the durability of material.
Drying Shrinkage
Fig. 8: Drying shrinkage test result
This test is conducted to determine the change in length of concrete specimen due to change in moisture content. Less the change
in length the concrete is good, it is observed that in GPC -5 the change length is very less hence it more durable compared to all
other proportions.
Acid and Sulphate Attack Test
Experimental result is shown in fig-9, percentage of weight loss for different proportion when specimens are immersed in
concentrated sulphuric acid and sulphate. It is observed that increasing the percentage of UFFA, acid attack will be
comparatively less but in case of sulphate attack increasing the percentage of UFFA and there by weight loss is more.
5. Characterization & Durability Properties of Ultrafine Fly Ash based Geopolymer Concrete
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Fig. 9: Acid Attack Test Result Fig. 10: Sulphate Attack Test Result
Fig 11 and 12 shows the comparison of compressive strength decrement after acid and sulphate attack test , it is observed that
in acid test more the GGBS, decrease the strength of concrete. In case of GPC-5 after acid test also strength attain will be 73
MPa and also percentage of strength loss is also less compared with other proportions.
Fig. 11: Comparison of compressive strength with acid test.
Fig. 12: Comparison of Compressive Strength of Specimens with and without acid
Sorptivity Test:
Fig. 13: Sorptivity Test Result
Sorptivity is conducted to determine the amount of water observed by concrete. From the above result it is observed that GPC-
5 and GPC 7 will have the less sorptivity value, lesser the Sorptivity value more is the durability of concrete.
6. Characterization & Durability Properties of Ultrafine Fly Ash based Geopolymer Concrete
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V. CONCLUSION
1) From the investigation it is clear that GPC-5 will give high compressive strength from 1st day to 28th day in comparison
with other combinations, because in GPC -5 91.6% of UFFA is used, in where in the particle size distribution is small
which helpful for strong bonding between particles resulting the reduction of voids which makes the concrete strong and
durable.
2) Use of ultrafine material will attain early strength approximately 30% of strength is attained in one day.
3) The 7th day strength of GPC due to heat curing is almost equal to almost equal to the 28th day of normal curing, and it can
be concluded that heat curing can achieve earlier strength,
4) In durability aspect it is clear that use of more UFFA in concrete is much more durable in sorptivity, acid attack, sulphate
attack, water permeability because of good bonding between the particles.
5) From abrasion test it is clear that abrasion value is very less hence GPC can be used as a pavement material in highways.
REFERENCES
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[3] Mehta, P. K., “Reducing the Environmental Impact of Concrete,” Concrete International, V. 23, No. 10, Oct. 2001, pp. 61-66.
[4] Mehta, P. K., “Greening of the Concrete Industry for Sustainable Development,” Concrete International, V. 24, No. 7, July 2002, pp. 23-28.
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[12] AS 1012.9-1999, “Determination of the Compressive Strength of Concrete Specimens,” Australian Standard, 1999, 10 pp.
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