硫酸钠在常温、较低正温及蒸养条件下对于混凝土一般都有比较明显的促硬早强效果,并有利于提高混凝土的抗渗性以及在硫酸盐腐蚀介质中的稳定性,而且材料来源广、价格低,因此在氯盐对钢筋的锈蚀作用日益被人们重视之下,硫酸钠便成为无机盐类混凝土外加剂中很受瞩目的一种了。目前,在实际施工生产中,除单独使用外,还常与其它早强剂组合用作复合早强剂(如:硫 Sodium sulfate at room temperature, low positive temperature and steam curing conditions generally have a relatively obvious effect of promoting hardness and early strength, and is also conducive to improving the impermeability of concrete and the stability of sulfate in corrosive media. Because of its wide source and low price, the role of chloride salts in corrosion of steel bars is increasingly underscored by people. Sodium sulfate has become a very attractive type of inorganic salt concrete admixture. At present, in actual construction and production, in addition to being used alone, it is often used in combination with other early strength agents as a composite early strength agent (eg, sulfur