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水泥砼是当代最主要的建筑材料。据统计,1980年全世界平均每人每年砼的消耗量达1.55吨之多,一些发达的工业国家高达3～4吨。随着经济的发展,土建工程的规模越来越大。现浇砼及装配式砼建筑工程的发展,要求砼在施工后的短时间内能达到快硬早强性能,从而加速施工模板的周转和缩短施工周期,并要求以不蒸养或以较低温度较短对间的蒸养来生产砼构件。据调查,每1吨水泥用来制成砼构件时的蒸养煤耗约300公斤,我国每年约有100
Cement concrete is the most important contemporary building material. According to statistics, in 1980 the world averaged about 1.55 tons per person per year, and some developed industrial countries were as high as 3 to 4 tons. With the economic development, the scale of civil engineering projects is getting bigger and bigger. The development of cast-in-place concrete and prefabricated concrete construction projects requires that the concrete can achieve rapid hardening and early strength performance within a short period of time after construction, thereby accelerating the turnover of the construction formwork and shortening the construction period, and requiring no steaming or lowering. The temperature is relatively short for the steam curing between the production of concrete components. According to the survey, the steamed coal consumption per ton of cement used to make the concrete components is about 300 kg, and there are about 100 in China each year.