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近年来建筑施工技术飞速发展,混凝土体积由几百立方米逐渐增大到几万立方米,因此,对于大体积混凝土施工提出了更高的要求。现代建筑中时常涉及到的大体积混凝土施工,如高层楼房基础、大型设备基础、水利大坝等,它主要的特点是体积大,一般实体最小尺寸大于或等于1m。由于其体积大,表面小,水泥水化热释放比较集中,内部温升比较快,当混凝土内外温差较大时,会使混凝土产生温度裂缝,影响结构安全和正常使用,所以必须从根本上分析它,来保证施工的质量。
In recent years, the rapid development of construction technology, concrete volume from a few hundred cubic meters gradually increased to tens of thousands of cubic meters, therefore, for the construction of mass concrete put forward higher requirements. Mass concrete construction often involved in modern architecture, such as high-rise building foundation, large-scale equipment foundation, water conservancy dam, etc. Its main feature is bulky, the general entity minimum size greater than or equal to 1m. Because of its large size and small surface, cement hydration heat is concentrated, the internal temperature rise faster, when the temperature difference between inside and outside the concrete will make the concrete temperature cracks, affecting the structural safety and normal use, it must be fundamentally analyzed It, to ensure the quality of construction.