Green initiative.

[iGas]

I read a few articles that shown fly ash, and bottom (coal ash) are being use to make bricks and tiles which is more than possible since fly ash is mostly made up of silica and small amount of metals with some sodium as well as calcium (good combination for fussing at high temperature).

Are there intensive research for such use in the US?
Please point me to the links if possible.

I'm curious as to how the US would deal with the waste because Bloomberg have an article that suggesting the use of coal for energy is on the rise in the US. And, it seems as if coal usage is also on the rise every where else as well.

 

[BoomerD]

I know fly ash is a great (and common) additive to concrete products...I imagine it'd also be good in brick.

http://www.flyash.com/

http://www.flyash.info/2005/5kay.pdf

http://www.greenestbrick.com/

http://www.google.com/search?hl=&q=...=fly+ash+in+brick&spell=1&fp=24caab9999a5d8d0

 

[iGas]

I know fly ash is a great (and common) additive to concrete products...I imagine it'd also be good in brick.

http://www.flyash.com/

http://www.flyash.info/2005/5kay.pdf

http://www.greenestbrick.com/

http://www.google.com/search?hl=&q=...=fly+ash+in+brick&spell=1&fp=24caab9999a5d8d0

Thanks for the links.

I like to see articles and/or large industrial/manufactures that deals with potential hazardous mineral leaching.

PS. It has been know that lime is use to stabilize coal and coal ash structural (crystallized) at high temperature and room temperature. However lime is also know to be easily leached by mild acid.

 

[Malak]

Coal is on the rise because electricity use is on the rise, and that is where most of our energy comes from. Electric cars make it worse. Hopefully we'll see both improvements to coal factories and also alternatives to getting the energy we need.

 

[IronWing]

Way back in the early nineties one of the other grad students I went to school with was studying the leachability of fly ash. Fly ash tends to consist of hollow silica spheres with the metals tending to be bonded somewhat loosely to the surface of the spheres. The trick to using fly ash in bricks is to find a way to encapsulate the metals so they don't leach.