微珠是一种超细微粒的玻璃珠。主要化学成分是SiO2和Al2O3。用于水泥混凝土中,可以降低用水量、提高流动性,提高强度和耐久性;利用微珠可以配制超高性能混凝土,蒸养混凝土及其他特种混凝土。 Beads are ultra-fine particles of glass beads. The main chemical composition is SiO2 and Al2O3. Used in cement concrete, can reduce water consumption, improve fluidity, improve strength and durability; the use of beads can be prepared ultra-high performance concrete, steam curing concrete and other special concrete.