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在重大工业项目、高层建筑基础工程、水利水电工程、港口码头工程、桥梁工程等施工中,需要一次性浇筑大体积的混凝土,这种大体积混凝土的浇筑易产生裂缝。笔者结合大体积混凝土在工程中的广泛应用,总结了大体积混凝土裂缝产生的主要原因,从混凝土掺料配合比、混凝土浇筑施工过程及养护阶段的控制等方面进行了探讨,提出了控制裂缝的一些施工技术,确保大体积混凝土工程的质量。
In major industrial projects, high-rise building foundation works, water conservancy and hydropower projects, port wharf works, bridges and other construction projects, the need to pour large volume of concrete one-time, the mass concrete pouring prone to cracks. Based on the extensive application of mass concrete in engineering, the author summarizes the main causes of mass concrete cracks, discusses the concrete mixing ratio, the concrete pouring construction process and the curing stage control, and puts forward some measures to control the cracks Some construction techniques to ensure the quality of mass concrete works.