现浇钢筋混凝土结构裂缝的成因和防治

针对日趋严重的钢筋混凝土结构裂缝问题。分别从原材料质量、温度应力、干缩形变以及施工工艺质量几个方面阐述了裂缝的原因,并采用灌浆、嵌缝封堵法、结构加固法等对裂缝进行处理,结果表明,上述两种方法是施工单位应用最普遍、效果最理想、使用最安全的方法。裂缝的出现不仅会降低建筑物的抗渗能力,影响建筑物的使用功能,而且会引起钢筋的锈蚀,混凝土的碳化,降低材料的耐久性,影响建筑物的承载能力,因此要对混凝土裂缝进行认真研究、区别对待,采用合理的方法进行处理,并在施工中采取各种有效的预防措施来预防裂缝的出现和发展,保证建筑物和构件安全、稳定地工作。

Steel reinforced concrete structural causes and prevention

Aiming at the problem of the seriously growing cracks in reinforced concrete structures,I describe several aspects of cracks separately from the quality of the raw material,thermal stress,shrinkage strain,the quality of the construction process and also adopt two methods of grouting and caulking sealing and structure reinforcement to deal with the fractures.The results show that the two methods above are the most common,the best and most secure ones of the construction unit.The appearance of the cracks can ...