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在结构混凝土施工技术中,一个完整的混凝土质量保证体系,应使混凝土构件或结构满足各项设计要求(如混凝土的抗压强度和外观质量等)。在正常情况下,采用立方体试块的抗压强度,虽然在混凝土的生产和交工验收中能一般地反映混凝土的质量,但因试块在浇注、振捣和养护条件等方面与结构混凝土相比有一定差异,因而并不能完全真实地反映结构中混凝土的质量,再加上结构混凝土构件尺寸较大,有些结构钢筋较密,浇注和振捣比较困难,只用边长仅为150mm立方体的试块能否真正代表结构混凝土的强度令人怀疑。因此,为保证结构混凝土质
In the structural concrete construction technology, a complete concrete quality assurance system shall make the concrete member or structure meet various design requirements (such as the compressive strength and appearance quality of the concrete, etc.). Under normal circumstances, using the compressive strength of the cubes, although generally reflecting the quality of the concrete in the production and acceptance of the concrete, due to the casting, vibrating and curing conditions compared with the structural concrete There are some differences, and therefore can not completely reflect the quality of the concrete in the structure, coupled with the size of structural concrete components, some of the structural steel bar denser, casting and vibrating is more difficult, only with a side length of only 150mm cube test It is doubtful whether the block can truly represent the strength of structural concrete. Therefore, in order to ensure the structure of concrete