24 Jan

Yes, according to experts, in some years from now, there might exist a supply shortage of portland cement. Thus, there is an urgent need to find for its substitute. And one of it is the fly ash cement. It is actually a waste product from factories all over the world.. Imagine, using this will answer the portland cement shortage problem, and at the same time, will help solve garbage disposal problems. http://www.toolbase.org/Technology-Inventory/Foundations/fly-ash-concrete

 

Simone A Del Rosario

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