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进入21世纪90年代后,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,现代建筑中常涉及到的大体积混凝土施工,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作用,所以必须从根本上解决它,控制裂缝
After entering the 21st century, the rapid development of building construction technology, the concrete volume gradually increased from several hundred cubic meters to tens of thousands of cubic meters, often involved in the construction of modern mass concrete construction, its main feature is bulky, the general entity The minimum size is greater than or equal to 1M. Due to its large volume and small surface, cement hydration heat release is more concentrated, and the internal temperature rise is faster. When the temperature difference between the inside and outside of the concrete is large, it will cause temperature cracks in the concrete and affect the safety and normal structure of the structure. Therefore, it must be fundamentally solved It, control cracks