This document is prepared for our major project submission for B.tech degree. the project deals with improvement of compressive strength of pervious concrete with out affecting its permeability property much.
Civil Engineering presentation topic. Its a green house building material, environment friendly and has wide application in constructions related to civil engineering projects.
This document is prepared for our major project submission for B.tech degree. the project deals with improvement of compressive strength of pervious concrete with out affecting its permeability property much.
Civil Engineering presentation topic. Its a green house building material, environment friendly and has wide application in constructions related to civil engineering projects.
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge. ...
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High volume fly ash concrete is a concrete where a replacement of about 35% or more of cement is made with the usage of fly ash.
Fly ash concrete is an eco-friendly construction material in which fly ash replaces a part of Portland cement.
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge. ...
pervious concrete cost vs concrete
pervious concrete cost
pervious concrete paving
pervious concrete driveway
pervious concrete companies
pervious concrete installation
pervious concrete patio
pervious concrete cost per yard
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
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High volume fly ash concrete is a concrete where a replacement of about 35% or more of cement is made with the usage of fly ash.
Fly ash concrete is an eco-friendly construction material in which fly ash replaces a part of Portland cement.
Concrete -
The most used construction material.
In here a brief about its -
Ingredients
Grades
Production &
Properties
are discussed with appropriate pictorial presentation making it quite simpler for understanding.
concrete is the key element of the civil engineering.It will be more beneficial to the first year student who want to learn basic about the concrete.How concrete originated and types of it all the related thing are described in this power point presentation.
Here, in this presentation you will get know about the different kinds of construction works which is involved in the interior designing field such as plumbing, Tiling, Gypsum partition, carpentry etc.
In this presentation you will get to learn about the pervious concrete -
What is pervious concrete
History
Need of pervious concrete
Mix design
Applications
Advantages
Disadvantages
Indus valley civilisation | Detail Analysis | Early civilisation MDZAFARHASIB
Here you will learn about the Indus valley civilisation in a very lucid language which will help you to get the details of this civilisation .
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(PART - 1)
https://youtu.be/TS8VYGpMmtU
(PART -2 )
https://youtu.be/MNS3Ly7_0Wg
The Stone Age | River Valley Civilisation MDZAFARHASIB
Here you will learn about the stone age and the rive valley civilisation . Why the early civilisation lived beside the river ? You will get to know all basic concept about history.
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https://youtu.be/r5WEHcLjRSs
Here you will learn about the basic of History and Prehistory which will eventually help you to grasp the things very quickly. Thank you
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https://youtu.be/Z4UZ7OSv-Cw
In this slide you will get the basic format of the CASE STUDY and the sample of a CASE STUDY. I hope it will help you to get the knowledge. It also helps you to write a CASE STUDY. You can Download it too for future use. THANK YOU
This is a project on Food System Management System. It is basically a PowerPoint Presentatiion which will help you to learn new things. Generally this project is given to the students of Nutrition and Dietician.
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Micro RNA genes and their likely influence in rice (Oryza sativa L.) dynamic ...Open Access Research Paper
Micro RNAs (miRNAs) are small non-coding RNAs molecules having approximately 18-25 nucleotides, they are present in both plants and animals genomes. MiRNAs have diverse spatial expression patterns and regulate various developmental metabolisms, stress responses and other physiological processes. The dynamic gene expression playing major roles in phenotypic differences in organisms are believed to be controlled by miRNAs. Mutations in regions of regulatory factors, such as miRNA genes or transcription factors (TF) necessitated by dynamic environmental factors or pathogen infections, have tremendous effects on structure and expression of genes. The resultant novel gene products presents potential explanations for constant evolving desirable traits that have long been bred using conventional means, biotechnology or genetic engineering. Rice grain quality, yield, disease tolerance, climate-resilience and palatability properties are not exceptional to miRN Asmutations effects. There are new insights courtesy of high-throughput sequencing and improved proteomic techniques that organisms’ complexity and adaptations are highly contributed by miRNAs containing regulatory networks. This article aims to expound on how rice miRNAs could be driving evolution of traits and highlight the latest miRNA research progress. Moreover, the review accentuates miRNAs grey areas to be addressed and gives recommendations for further studies.
Diabetes is a rapidly and serious health problem in Pakistan. This chronic condition is associated with serious long-term complications, including higher risk of heart disease and stroke. Aggressive treatment of hypertension and hyperlipideamia can result in a substantial reduction in cardiovascular events in patients with diabetes 1. Consequently pharmacist-led diabetes cardiovascular risk (DCVR) clinics have been established in both primary and secondary care sites in NHS Lothian during the past five years. An audit of the pharmaceutical care delivery at the clinics was conducted in order to evaluate practice and to standardize the pharmacists’ documentation of outcomes. Pharmaceutical care issues (PCI) and patient details were collected both prospectively and retrospectively from three DCVR clinics. The PCI`s were categorized according to a triangularised system consisting of multiple categories. These were ‘checks’, ‘changes’ (‘change in drug therapy process’ and ‘change in drug therapy’), ‘drug therapy problems’ and ‘quality assurance descriptors’ (‘timer perspective’ and ‘degree of change’). A verified medication assessment tool (MAT) for patients with chronic cardiovascular disease was applied to the patients from one of the clinics. The tool was used to quantify PCI`s and pharmacist actions that were centered on implementing or enforcing clinical guideline standards. A database was developed to be used as an assessment tool and to standardize the documentation of achievement of outcomes. Feedback on the audit of the pharmaceutical care delivery and the database was received from the DCVR clinic pharmacist at a focus group meeting.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
3. 3
TopicsToBe Discussed
• What is perviousconcrete
• History
• Need of pervious concrete
• Mix design
• Applications
• Advantages
• Disadvantages
• Conclusion
• Reference
4. What is pervious concrete ?
• Pervious concrete is a special type of concrete,
which consists of cement, coarse aggregates,
water and if required, admixtures and other
cementitious materials.
• It is a concrete with high porosity used
for concrete flatwork applications.
• It allows water from precipitation and
other resources to pass through it.
• It is also known as Permeable concrete
and Porous concrete.
5. History Of PerviousConcrete
• Pervious concrete was first used in the 1800s in Europe.
• It was brought to the United States after World War II.
• It first showed up in Florida and other southern coastal
states.
• It became increasingly viable in Europe after the Second World
War due to the Scarcity of cement.
• The coastal states have experienced pervious concrete for over
20 years.
• In the 1990’s the U.S. Environmental Protection Administration
(EPA) came out with the Clean Water Act (CWA), that later led
to other phases of implementation of the pervious concrete to
preserve the waterways from stormwater borne pollutants.
6. Need of pervious concrete
• A large amount of rain water ends up falling
on impervious surfaces such as parking lots, drive
ways, sidewalks, and streets rather than soaking
into the soil.
• This creates an Imbalance to the natural
ecosystem and leads to a host of problems
including erosion, floods, ground water level
depletion and pollution of rivers, lakes etc..
8. MIX DESIGN
8
• Aggregates
• Cementious Materials
• Water
• Admixtures
Ranges Of Materials
•DesignVoidContent:15%to 30%
• Waterto CementRatio:0.28to0.40
•Binder to AggregateRatio:below0.25
9. Aggregates
9
• Pervious concrete has little or no fine aggregates in the
mixture. Aggregate size is typically between 3/8 to1/2
inch maximum
10. Cementious materials
10
• Typically type-I cement is used for the production of pervious concrete.
• Supplementary cementious materials such as fly ash or slag can be used in
exchange up to about 25% (fly ash) and up to about 50%(slag) ofcement.
11. Water
11
• Water meeting standard requirements for conventional
concrete can be used for the production of pervious concrete
13. A mix design with little water can create a very
weak binder. This will create a very dry mix that is
susceptible to spalling and crumbling.
Correct amount of water
A mix design with too much water can collapse
the void space, making an almost impenetrable
concrete surface
13
14. Ranges of materials proportions in pervious concrete
• Cementitious materials
• Aggregate
• Water cement ratio
(by mass)
• Aggregate cement ratio
(by mass)
• Fine:coarse aggregate ratio
(by mass)
MATERIAL PROPORTIONS
270 to 415 kg/m3
1190 to 1480 kg/m3
0.27 to 0.34
4 to 4.5:1
0 or 1:1
15. APPLICATIONS
• Residential roads , alleys and driveways
• Low volume pavements.
• Sidewalks and pavements.
• Parking areas
• Tennis courts
• Sub base for conventional concrete pavements
• Well linings
• Swimmimg pool decks
• Noise barriers
17. ADVANTAGES
• It recharges ground water directly.
• It Protects streams, watersheds, and ecosystems.
• It Reduces surface temperatures and heat island effects.
• It Eliminates need of expensive collection and detention
systems.
• It is much more profitable for the developer.
• It Eliminates costly storm water detention vaults and piping
systems.
• It Eliminates the cost of curb and gutter installations.
18. DISADVANTAGES
• Extended curing time.
• It is more expensive to install as compared to traditional
pavements.
• Limited use in heavy vehicle traffic areas.
• Frequent maintenance is required because it is prone to
clogging.
• Compressive strength is low.
• They aren’t as strong as traditional pavements.
• If we put consistent pressure (like heavy vehicle braking) on it,
then the pores of the pavement will collapse. Due to this,
permeable.
• It is not ideal for building , airport runways and highways.
18
19. WAYS OF IMPROVEMENT OF STRENGTH OF PERVIOUS CONCRETE:
The strength improvement can be done by –
• Addition of small quantity of fine aggregates.
• Addition of small quantities of cementitious
materials.
• Usage of small sized coarse aggregates.
• Using low w/c ratio.
20. CONCLUSION
Now we have come to the conclusion-
• In the past due to the scarcity of cement, the pervious
concrete has been used extensively.
• The pervious concrete has lost its importance after
successful production of cement in large quantities.
• But now-a-days, the usage pervious concrete has gained its
popularity due to many advantages.
• The urban areas all over the world have become
CONCRETE JUNGLES. The discharge of storm water is very
difficult problem in the present conditions.
• By using the pervious concrete we can able to recharge the
ground water table and the storm water disposal can also
be done.
• So, in future it can tackle the aforesaid problems.
21. REFERENCE
• NRMCA, “What, Why, and How? Pervious Concrete,
“Concrete in practice series, CIP 38, Silver Spring, Maryland,
May 2004, 2pp.
• Pervious concrete pavements, southeast
Association, www.pervious.info
• NRMCA, “Freeze Thaw Resistance of Pervious
Concrete,” National Ready Mixed Concrete Association,
May 2004.
• RMC Research Foundation Pervious Concrete
Research Compilation: Past, Present and Future.
• CONCRETE TECHNOLOGY TODAY, Portland Cement
Association.