混凝土受硫酸盐侵蚀的环境因素研究现状

硫酸盐侵蚀是水泥混凝土结构病害劣化的主要原因之一.海水、盐湖、地下水等环境中大多含有硫酸盐,混凝土组分本身也有可能带有硫酸盐,而它们在各种条件下对混凝土产生腐蚀作用,使其发生破坏.文章分析了阳离子、阴离子、硫酸盐浓度、温度、PH值、干湿循环及冻融循环、荷载作用等因素对混凝土受硫酸盐侵蚀的影响,综述了目前的研究现状,指出了当前研究成果中的成就与不足.

Study on the Environmental Factors Influencing the Sulfate Attack on Concrete

Sulfate attack is one of the most important problems on concrete durability.Seawater,salt lakes,groundwater and other environments are all rich in sulfate,and concrete components may also contain sulfate,which attack concrete under various conditions and cause in damages.In this paper,the effect of environment factors,such as cation type,anion,concentration,temperature,PH value of sulfate,dry-wet cycle and frost-thaw damage,load,are analyzed.An overview of the present research state is also given,and some of the major accomplishments and deficiencies are pointed out.