碱激发胶凝材料抗硫酸盐研究

Study on Sulfate Resistance of Alkali Activated Cementitious Materials

碱激发胶凝材料是一种新型绿色胶凝材料,碱激发混凝土以环保、强度高、耐久性好等一系列特点得到国内外学者的广泛关注,因此,对其力学性能和耐久性的研究逐渐成为热点。为此综述硫酸盐对碱激发混凝土的侵蚀机理,比较碱激发材料与普通硅酸盐混凝土面对硫酸盐侵蚀的不同侵蚀产物,以及碱激发胶凝材料硫酸盐侵蚀的影响因素,提出碱激发胶材混凝土抗硫酸盐耐久性研究存在的问题和今后研究的方向。

Alkali activated cementitious material is a new type of green cementitious material.Alkali activated concrete has been widely concerned by scholars at home and abroad for its environmental protection,high strength,good durability and a series of other characteristics.The research on its mechanical properties and durability has gradually become a hot spot.This paper summarizes the corrosion mechanism of sulfate on alkali activated concrete,compares the different corrosion products of alkali activated materials and ordinary silicate concrete exposed to sulfate corrosion,and the influencing factors of sulfate corrosion of alkali activated cementitious materials,and puts forward the existing problems and future research directions of sulfate resistance durability of alkali activated cementitious materials concrete.