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混凝土结构的裂缝是一个很普遍的技术问题。近代对混凝土强度理论进行亚微观研究结果以及大量工程实践所提供的经验都说明混凝土结构的裂缝是不可避免的,特别是现代混凝土施工普遍采用商品混凝土及泵送施工,外加剂、掺和料等在混凝土中的广泛使用,导致混凝土裂缝普遍存在。由于大体积混凝土浇注工艺所具有的特性,裂缝更容易发生。冬期大体积混凝土施工可通过混凝土原材料的选取、混凝土坍落度的控制、混凝土配合比的优化、混凝土浇注过程的严密组织、混凝土浇注完毕后的精心养护等几个环节的严格把关,有效的避免大体积混凝土裂缝的发生。
Cracks in concrete structures are a very common technical problem. Modern sub-micro-strength theory of concrete results and a large number of engineering experience provided by the experience shows that the cracks in concrete structures is inevitable, especially the construction of modern concrete commonly used commercial concrete and pumping construction, admixtures, admixtures, etc. Widely used in concrete, leading to the prevalence of concrete cracks. Cracks are more likely to occur due to the nature of the mass concrete casting process. Winter bulk concrete construction through the selection of raw materials of concrete, concrete slump control, concrete mix optimization, concrete pouring process of tight organization, careful care after pouring concrete several links such as strict control, effectively avoid Occurrence of mass concrete cracks.