As pozzolan greatly improves the strength and durability of concrete, the use of ash is a key factor in their preservation and add to the concrete's final strength and increase its chemical resistance and durability.It can also increase workability of cement while reducing water demand. The replacement of Portland cement with fly ash also reduces the greenhouse gas foot print of concrete, as the production of one ton of Portland cement produces approximately one ton of CO2. Since the worldwide production of Portland cement is expected to reach nearly 2 billion tons by 2010, replacement of 30% of this amount by fly ash could dramatically reduce global carbon emissions.
as the name suggests,green concrete is the concrete which is environment friendly and uses the waste content as fly ash,husk ash,micro silicates.it is very good replacement of OPC( ordinary portland cement) as it is high fire resistant,corrosion resistant and having high strength and causes CO2 reductio in environment.
There are experimental results showing that the flyash can be used up to 30 % as a cement replacement material. Some up to 80 % flyash has certain properties and it can be used some percent to the concrete mix as a admixture.. Proper trial mix and test shall be carried out for required strength and durability..
To strengthen concrete, various additives can be used, such as fly ash, slag, and silica fume, which enhance its durability and compressive strength. Additionally, fibers like steel, polypropylene, or glass can be incorporated to improve tensile strength and reduce cracking. Proper curing methods and the use of high-quality aggregates also play a crucial role in achieving optimal strength. Lastly, adjusting the water-cement ratio can significantly impact the concrete's overall performance.
The tensile strength of concrete is 10% of it's compressive strength.
J. A. Hester has written: 'Study of fly ash as a material for use in concrete' -- subject(s): Concrete, Fly ash, Testing
Concrete is made out of sand, ash, and limestone. Sand provides the bulk of the material, ash or fly ash acts as a binder, and limestone is used as a filler to enhance the properties of the concrete.
As pozzolan greatly improves the strength and durability of concrete, the use of ash is a key factor in their preservation and add to the concrete's final strength and increase its chemical resistance and durability.It can also increase workability of cement while reducing water demand. The replacement of Portland cement with fly ash also reduces the greenhouse gas foot print of concrete, as the production of one ton of Portland cement produces approximately one ton of CO2. Since the worldwide production of Portland cement is expected to reach nearly 2 billion tons by 2010, replacement of 30% of this amount by fly ash could dramatically reduce global carbon emissions.
as the name suggests,green concrete is the concrete which is environment friendly and uses the waste content as fly ash,husk ash,micro silicates.it is very good replacement of OPC( ordinary portland cement) as it is high fire resistant,corrosion resistant and having high strength and causes CO2 reductio in environment.
R. C. Joshi has written: 'Fly Ash in Concrete'
T. J Larsen has written: 'Quality concrete with fly ash'
There are experimental results showing that the flyash can be used up to 30 % as a cement replacement material. Some up to 80 % flyash has certain properties and it can be used some percent to the concrete mix as a admixture.. Proper trial mix and test shall be carried out for required strength and durability..
To strengthen concrete, various additives can be used, such as fly ash, slag, and silica fume, which enhance its durability and compressive strength. Additionally, fibers like steel, polypropylene, or glass can be incorporated to improve tensile strength and reduce cracking. Proper curing methods and the use of high-quality aggregates also play a crucial role in achieving optimal strength. Lastly, adjusting the water-cement ratio can significantly impact the concrete's overall performance.
Fly ash is a common term for the final product of coal after combustion. The white ash has properties similar to portlan cement. Since portlan cement is a comon binder in concrete it has a multitude of construction applications. The way you can earn wealth from Fly ash is to sell the ash too the concrete market. Fly ash is rate based of of it's composition though and it's composition is based off of the product combusted to produce it. Hope this helps and yes it is harmful to the enviroment...i think :)
fly ash brick have light weight over the clay brick... but the mechanical bonding strength is weak but this can be rectified by adding marble waste....this s one of the disadvn
The tensile strength of concrete is 10% of it's compressive strength.
specific gravity of fly ash is 3.2