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近年来,随着国民经济和建筑技术的发展,建筑规模不断扩大,大型现代化技术设施或构筑物不断增多,而混凝土结构以其材料廉价物美、施工方便、承载力大、可装饰强的特点,日益受到人们的欢迎,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。大体积砼的施工技术要求比较高,特别在施工中要防止混凝土因水泥水化热引起的温度差产生温度应力裂缝。因此需要从施工的各个环节做好充分的准备工作,才能保证基础底板大体积砼顺利施工。同时,分析了大体积砼裂缝的产生原因,并结合多年的实践经验总结了一些具体的裂缝防治措施。
In recent years, with the development of the national economy and construction technology, the scale of construction has been continuously expanded, and large-scale modern technological facilities or structures have been continuously increasing. However, due to its advantages of cheap materials, convenient construction, large carrying capacity and strong decorative features, Popular by people, mass concrete is gradually becoming an important part of a large-scale facility or structure. Large volume of concrete construction technology requirements are relatively high, especially in the construction of concrete to prevent the temperature difference caused by cement hydration temperature stress cracks. Therefore, all aspects of construction need to be fully prepared to ensure the smooth construction of bulk concrete base floor. At the same time, the causes of mass concrete cracks are analyzed, and some concrete measures for prevention and control of cracks are summarized based on many years of practical experience.