Chemical admixtures are made use of to enhance the caliber of concrete throughout mixing, transporting, placement and curing. They drop into the subsequent classes: Higher-energy mixes that use fly ash or silica fume make tall buildings much more productive, because considerably less concrete is necessary for the same load-bearing capability. https://www.tjcyindustrialchem.com/news/cement-additives-and-concrete-admixtures-key-differences.html