“Ash can be used to replace up to 30% of cement,” Krish Mehta, co-founder and CEO of PHNX Materials, told TechCrunch. By displacing cement in concrete, fly ash from coal plants can eliminate a ...

This Collection will cover the research happening around the use of fly ash in concrete, asphalt and other building materials, highlighting its environmental benefits and performance characteristics.

Fly ash is made up of the loose, airborne particles created as coal is burned in power plants. This material is usually captured, and while some is recycled, most ends up in landfill. Concrete is ...

To address this issue, chemist James Tour experimented with replacing 30% of the cement used to make a batch of concrete with purified coal fly ash. The process improved the concrete’s strength ...

"Our addition of nano additives to modify the concrete's chemistry allows more fly ash to be added without compromising engineering performance," said Gunasekara, from RMIT's School of Engineering.

Substituting fly ash for a portion of the cement in concrete mixes significantly reduces those emissions—every ton of portland cement displaced by fly ash in the production of concrete delivers ...

26 May 2009 MUSCAT -- PFA (fly ash), a residue produced from the burning of pulverised coals in power station furnaces, is to fortify concrete structures under construction across the country offering ...

To do so, the researchers used a mixture of low calcium fly ash, with 18% hydrated lime and 3% nano-silica acting as strengthening agents, then poured some concrete and started testing its ...