减水剂是目前研究和应用最为广泛的一种混凝土外加剂。将它掺入到混凝土拌合物中,不仅能改善混凝土的和易性、水密性和耐久性,对混凝土的物理力学性能有较全面的改善和提高,同时能节约水泥,从而达到节能的目的。如使用一般减水剂可节约水泥5～10％;使用高效能减水 Water reducer is one of the most widely studied and applied concrete admixtures. Incorporating it into a concrete mixture can not only improve the workability, watertightness, and durability of the concrete, but also improve and improve the physical and mechanical properties of the concrete in a more comprehensive manner, and at the same time save cement, thereby achieving the purpose of energy saving. . If the use of general water-reducing agent can save 5 to 10% of cement; use of high-efficiency water