硅灰对混凝土耐久性的影响

硅粉是硅合金与硅铁合金制造过程中高纯石英、焦炭和木屑还原产生的副产品,是从电弧炉烟气中收集到的无定型二氧化硅含量很高的微细球形颗粒。硅粉一般含有90%以上的SiO2,且大部分为无定型二氧化硅。硅粉用于提高新拌混凝土及硬化后混凝土的性能,具有火山灰活性的硅灰对混凝土的耐久性有明显的改善作用。

Effect on the durability of concrete with silica fume

Silica fume is alloy of silicon and ferrosilicon alloy manufacturing process of high purity quartz,coke and wood reduction byproduct,from electric arc furnace gas collected from amorphous silica with very high content of fine spherical particles.Silica fume is generally contain more than 90% of SiO2,and most of amorphous silica.Silica fume for fresh concrete to improve and hardened concrete properties with volcano ash,silica fume on concrete durability were improved.