Other than portland cement, concrete may possibly contain other cementitious elements which include fly ash, a waste byproduct from coal burning electrical electric power vegetation; floor slag, a byproduct of iron and steel production; and silica fume, a squander byproduct through the manufacture of silicon or ferro-silicon steel. Some of https://website-wordpress74951.blog-eye.com/35969722/the-concrete-reinforced-steel-diaries