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本文从早强硫铝酸盐水泥水化和硬化理论等方面阐述其抗冻性。早强硫铝酸盐水泥由于水泥矿物水化活性高,水化速度快,尽管在低负温下水化反应速度下降,但比硅酸盐水泥快得多。例如在-10℃下无任何加外剂的情况下,六小时净浆试体硅酸盐水泥结合水仅为3.5％,而早强硫铝酸盐水泥为9.66％。硫铝酸盐水泥水化时,所需要的理论加水量与实际加水量
In this paper, the frost resistance of early strength sulphoaluminate cement hydration and hardening theory is expounded. Early strength sulphoaluminate cement has high hydration activity and quick hydration rate. Although the hydration reaction rate decreases at low negative temperature, it is much faster than Portland cement. For example, in the absence of any external additive at -10°C, the combined Portland cement-bound water for the six-hour paste test was only 3.5%, while the early-strength sulphoaluminate cement was 9.66%. Required theoretical water addition and actual water addition for sulphoaluminate cement hydration