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前言低热水泥即指水化热较低,熟料中硅酸三钙以及铝酸三钙含量较低的水泥。从1985年出版的世界水泥标准看已有28个国家和地区建立了低(中)热或水工水泥标准(见表①)。其中有些标准规定了硅酸三钙含量在35～55％、铝酸三含量不大于8％,或7天和28天水化热分别控制在60～80卡/克等要求。从该标准看,除了七家标准允许掺入混合材外,其余均是纯熟
Introduction Low-heat cement refers to cement with low heat of hydration and low content of tricalcium silicate and tricalcium aluminate in clinker. From the world cement standards published in 1985, 28 countries and regions have established low (medium) heat or hydraulic cement standards (see Table 1). Some of these standards stipulate that the content of tricalcium silicate is 35 to 55%, the content of aluminate trihydrate is not more than 8%, or the heat of hydration is controlled at 60 to 80 calories per gram for 7 and 28 days, respectively. From this standard, except for the seven standards that allow blends to be blended in, the rest are fully cooked.