本产品是一种高活性、无定形球状颗粒。主体成份为SiO2,细度及比表面积是水泥的80~100倍。在砼中使用适量的硅灰,可起到如下作用:荩显著提高砼的抗压、抗折、抗渗、防腐、抗冲击及耐磨性能。荩具有保水、防止离析、泌水、大幅度降低泵送砼泵送阻力的作用。荩显著延长砼的使用寿命。特别是在硫酸盐侵蚀、氯盐污染、高湿度等恶劣环境下,可使砼的耐久性 This product is a highly active, amorphous spherical particles. The main component of SiO2, fineness and specific surface area of ​​cement is 80 to 100 times. The use of appropriate amount of silica fume in concrete can play the following role: 荩 significantly improve the compressive strength, bending resistance, impermeability, corrosion resistance, impact resistance and wear resistance.荩 with water, prevent segregation, bleeding, significantly reduce the pumping concrete pump resistance.荩 significantly extend the service life of concrete. Especially in the sulfate attack, chloride pollution, high humidity and other harsh environments, can make concrete durability