This document presents a study on the use of ceramic aggregate in concrete with hydrochloric acid (HCl). Ceramic waste is used to partially replace natural coarse aggregate at intervals of 20% from 0-100%. Concrete mixtures are produced by replacing the mixing water with 5% and 10% HCl. Tests are conducted to compare the strength properties of ceramic aggregate concrete to normal concrete. The compressive strength is found to decrease with the increase in HCl concentration in both fresh and hardened states. The conclusions are based on the experimental results to determine the suitability of using ceramic waste aggregate in concrete.
Research on Strength, Alkali-Silica Reaction and Abrasion Resistance of Concr...Salih Taner YILDIRIM
In this study, the effects on the mechanical and durability properties of concrete with
cathode ray tube glass sand (CRTS) obtained by recycling the screens of cathode ray tubes
(CRTs) were investigated. CRTS was used by the ratios of 5, 10, 15, and 20% in the
concrete. The unit weight, workability, water absorption, compressive strength, flexural
strength, ultrasonic pulse velocity, static and dynamic elastic moduli, abrasion resistance,
and alkali-silica reaction (ASR) expansion tests on the concrete were examined. The use of
CRTS improved specific properties of concrete according to the fraction of glass aggregate
used between 0 and 20%. Plain concrete (P) and CRTS of 5% in concrete gave better results
in terms of mechanical properties. Use of CRTS above 5% in concrete declined the
mechanical properties but on the 90th day, CRTS concrete reduced the difference. CRTS
up to 20% in concrete especially improved abrasion resistance in comparison to P without
CRTS; furthermore, this addition did not increase ASR expansion to a deleterious level.
Effective Utilisation of Waste Glass in ConcreteIJERA Editor
Glass is a widely used product throughout the world; it is versatile, durable and reliable. The uses of glass
ranges drastically, therefore waste glass is discarded, stockpiled or land filled. About million tons of waste glass
is generated and around large percent of this glass is disposed of in landfills. This pattern has influenced
environmental organizations to pressure the professional community to lower the amount of glass being
discarded as well as find use to the non-recycled glass in new applications. In relation, the recycling of waste
glass as a component in concrete gives waste glass a sustainable alternative to land filling and therefore makes it
economically viable.The proposed study of utilising waste glass powder(GLP) in concrete as partial replacement
of cement as well as the use of crushed glass particles(CGP) retained on 1.18mm & 2.36mm IS sieve as a partial
replacement to sand, which offers important benefits related to strength of concrete as well as it is eco-friendly.
Recycling of mixed-colour waste glass possesses major problems for municipalities, and this problem can be
greatly eliminated by re-using waste glass as sand/cement replacement in concrete. Moreover, re-using waste
materials in construction can reduce the demand on the sources of primary materials.In this project the attempts
have been made to partially replace the cement as well as sand by waste glass powder and crushed glass
particles with equal combination by 5% interval up to 20% replacement and observe its effect on the strength of
concrete after 7 days and 28 days of curing.
To Study Characterstic Behaviour of Recycled Concrete Aggregateijtsrd
Near about 30 of concrete is produce by concrete industry and it is calculated that in a year 165 million tonnes of concrete is used. Hence, to produce other total sources that are based on waste products, there are many significant incentives. Recycling products are used to produce aggregate Martials for unbound fills, pipe bidding and sub base as the RCA "Recycled Concrete Aggregate" or RCA is not suitable for concrete that is ready to mix because it is blended with another products. Many sites did trials with RCA that mix with ready mix concrete but it was not useful choice. Utilities organizations produce brick, containing stone, clay, Trench arising, asphalt, and concrete but that could be merged in low power concrete which were a cost effective trench product. IN trench reinstatement from RCA formed concrete is used that has 4mm fines and in formed concrete, it has ability to use burner bottom ash. BS 8500 concrete improved the potential for recycling as BS EN 12620. Presently recycled products for concrete is not available but it is a hope that they will be used in future. Nitin Jain | Ashish Verma "To Study Characterstic Behaviour of Recycled Concrete Aggregate" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29348.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/29348/to-study-characterstic-behaviour-of-recycled-concrete-aggregate/nitin-jain
Research on Strength, Alkali-Silica Reaction and Abrasion Resistance of Concr...Salih Taner YILDIRIM
In this study, the effects on the mechanical and durability properties of concrete with
cathode ray tube glass sand (CRTS) obtained by recycling the screens of cathode ray tubes
(CRTs) were investigated. CRTS was used by the ratios of 5, 10, 15, and 20% in the
concrete. The unit weight, workability, water absorption, compressive strength, flexural
strength, ultrasonic pulse velocity, static and dynamic elastic moduli, abrasion resistance,
and alkali-silica reaction (ASR) expansion tests on the concrete were examined. The use of
CRTS improved specific properties of concrete according to the fraction of glass aggregate
used between 0 and 20%. Plain concrete (P) and CRTS of 5% in concrete gave better results
in terms of mechanical properties. Use of CRTS above 5% in concrete declined the
mechanical properties but on the 90th day, CRTS concrete reduced the difference. CRTS
up to 20% in concrete especially improved abrasion resistance in comparison to P without
CRTS; furthermore, this addition did not increase ASR expansion to a deleterious level.
Effective Utilisation of Waste Glass in ConcreteIJERA Editor
Glass is a widely used product throughout the world; it is versatile, durable and reliable. The uses of glass
ranges drastically, therefore waste glass is discarded, stockpiled or land filled. About million tons of waste glass
is generated and around large percent of this glass is disposed of in landfills. This pattern has influenced
environmental organizations to pressure the professional community to lower the amount of glass being
discarded as well as find use to the non-recycled glass in new applications. In relation, the recycling of waste
glass as a component in concrete gives waste glass a sustainable alternative to land filling and therefore makes it
economically viable.The proposed study of utilising waste glass powder(GLP) in concrete as partial replacement
of cement as well as the use of crushed glass particles(CGP) retained on 1.18mm & 2.36mm IS sieve as a partial
replacement to sand, which offers important benefits related to strength of concrete as well as it is eco-friendly.
Recycling of mixed-colour waste glass possesses major problems for municipalities, and this problem can be
greatly eliminated by re-using waste glass as sand/cement replacement in concrete. Moreover, re-using waste
materials in construction can reduce the demand on the sources of primary materials.In this project the attempts
have been made to partially replace the cement as well as sand by waste glass powder and crushed glass
particles with equal combination by 5% interval up to 20% replacement and observe its effect on the strength of
concrete after 7 days and 28 days of curing.
To Study Characterstic Behaviour of Recycled Concrete Aggregateijtsrd
Near about 30 of concrete is produce by concrete industry and it is calculated that in a year 165 million tonnes of concrete is used. Hence, to produce other total sources that are based on waste products, there are many significant incentives. Recycling products are used to produce aggregate Martials for unbound fills, pipe bidding and sub base as the RCA "Recycled Concrete Aggregate" or RCA is not suitable for concrete that is ready to mix because it is blended with another products. Many sites did trials with RCA that mix with ready mix concrete but it was not useful choice. Utilities organizations produce brick, containing stone, clay, Trench arising, asphalt, and concrete but that could be merged in low power concrete which were a cost effective trench product. IN trench reinstatement from RCA formed concrete is used that has 4mm fines and in formed concrete, it has ability to use burner bottom ash. BS 8500 concrete improved the potential for recycling as BS EN 12620. Presently recycled products for concrete is not available but it is a hope that they will be used in future. Nitin Jain | Ashish Verma "To Study Characterstic Behaviour of Recycled Concrete Aggregate" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29348.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/29348/to-study-characterstic-behaviour-of-recycled-concrete-aggregate/nitin-jain
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers