大体积混凝土裂缝成因及控制措施

The Cause and Control Measures of Mass Concrete Cracks

混凝土结构在建设和使用过程中容易出现不同程度、不同形式的裂缝,这是一个相当普遍的现象。大体积混凝土结构出现裂缝则是更加普遍,特别是因水泥水化热引起的温度差产生的温度应力裂缝,是长期困扰施工人员的一个技术难题,一直未能得到很好的解决。结合某特高压输电线路的实践经验,对大体积混凝土进行热工计算,进而总结出大体积混凝土裂缝的控制措施,以供大家今后参考借鉴。

Reinforced concrete structure in the process of construction and use of prone to varying degrees, different forms of cracks, this is a very common phenomenon. Cracks in mass concrete structure is more common, especially caused by cement hydration heat temperature difference of temperature stress crack, is a technical difficulty in construction personnel for a long time, haven＇t been able to get a good solution. Combined with the experience of a uhv transmission lines, the calculation of the thermal mass concrete and summarizes the control measures of mass concrete crack, for everybody reference in the future.