论文部分内容阅读
近年来,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,其中时常涉及到大体积混凝土施工,如高层楼房基础、大型设备基础等。它主要的特点就是体积大,一般实体最小尺寸大于或等于1m。它的表面系数比较小,水泥水化热释放比较集中,内部温升比较快。混凝土内外温差较大时,会使混凝土产生温度裂缝,影响结构安全和正常使用。所以必须从根本上分析它,来保证施工的质量。
In recent years, with the development of the national economy and building technology, large-scale modern technology facilities or structures have been increasing, which often involve mass concrete construction, such as the foundation of high-rise buildings, large-scale equipment foundations, and so on. Its main feature is its large size. The minimum size of a general entity is greater than or equal to 1m. Its surface coefficient is relatively small, the release of cement hydration heat is relatively concentrated, and the internal temperature rise is relatively fast. When the temperature difference between inside and outside of the concrete is large, it will cause temperature cracks in the concrete, affecting the safety and normal use of the structure. Therefore, it must be analyzed fundamentally to ensure the quality of construction.