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硅酸盐自应力水泥是石膏、矾土水泥和硅酸盐水泥粉磨而成的一种混合材料。在水化作用中,利用石膏和矾土水泥所起膨胀能来张拉钢筋混凝土内钢筋,从而达到预应力的目的。所谓矾浆自应力水泥(自应力混凝土)就是利用矾浆来代替矾土水泥而言,也是属于硅酸盐自应力水泥。矾土水泥大家都较熟悉,是以优质的铝矾土为主要原料加适量石灰石锻烧而成。因此,一方面要消耗大量的优质铝矾土,另一方面工艺条件也比较
Silicate self-stressing cement is a mixture of gypsum, alumina cement, and Portland cement. In the hydration process, the expansion energy from gypsum and bauxite cement is used to tension the reinforcing bars in the reinforced concrete so as to achieve the purpose of prestressing. The so-called self-stressing cement for mortar (self-stressing concrete) is a kind of self-stressing cement made of silicate, which is a substitute for bauxite cement. Bauxite cement is more familiar to everyone, and is made of high-quality bauxite as the main raw material plus appropriate amount of limestone calcined. Therefore, on the one hand, a large amount of high-quality bauxite is consumed, and on the other hand, the process conditions are also comparable.