Moreover portland cement, concrete could contain other cementitious elements which include fly ash, a squander byproduct from coal burning electric electrical power plants; floor slag, a byproduct of iron and steel manufacturing; and silica fume, a squander byproduct in the manufacture of silicon or ferro-silicon steel. Some cementitious materials are https://zionytmev.blazingblog.com/35750195/concrete-reinforced-house-secrets