简述大体积混凝土裂缝的产生原因及防治

Causation And Prevention Of Huge Concrete Carack

随着国民经济和建筑技术的发展,大型现代化技术设施或构筑物不断增多,于是大体积混凝土逐渐成为构成大型设施或构筑物主体的重要组成部分。但是混凝土是抗压强度高、抗拉强度低的复合材料,因此混凝土极易被拉断,在混凝土表面产生裂缝。裂缝一旦形成,会降低结构的耐久性,削弱构件的承载力,同时会可能危害到建筑物的安全使用。因此如何采取有效措施防止大体积混凝土的开裂,是一个值得重视的问题。

In recent years, with the construction of the national economy and technology, modem technology facilities for large - scale structures or increasing, the mass concrete is becoming a major facility or structure constitutes an important part of the main. But concrete is its high compressive strength, tensile strength of the composite lower, so easily pulled off the concrete, cracks in the concrete surface. Once the cracks formed, will reduce the durability of the structure, weakening the capacity component, will be at the same time could endanger the safe use of the building. Therefore, how to take effective measures to prevent cracking of mass concrete is a priority problem.