论大体积混凝土的裂缝控制

Analyses of Mass Concrete Crack Control

为有效控制裂缝的产生,文章从力学角度出发,分析了提高各龄期混凝土的弹性模量和降低温差混凝土的强度。混凝土温度收缩应力在大体积混凝土施工中,由于水泥水化热引起混凝土浇注内部温度和温度应力剧烈变化,由此而产生的温度应力是导致混凝土产生裂缝的原因。

In order to effectively control the cracks, the paper analyzes the improvement the modu lus of elasticity of concrete at different periods and the strength of concrete due to the reduction of temperature differences, from the angle of mechanics. The temperature shrinkage stress of concrete in the construction of mass concrete will have great changes due to the internal temperature and dramatic changes caused by, the hydration heat of cement in the conerete pouring, the temperature stress is the main reason for the cracks of concrete.