Why We Use Flyash In Concrete ? and Why PPC is Best Cement for House Construction Works.

Dear Friends, In this video I have explained, why we use Flyash in concrete or in OPC Cement, get all the details with cement reaction formula when water mixed with watet. also you get the reason why PPC Cement is best for house construction. What is Flyash What is GGBS What is Ground Granulates Blastfurnace Slag