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在混凝土大坝施工期间,为了控制混凝土的施工质量,及时修正混凝土的配制强度,必须在混凝土浇筑过程中,在机口或浇筑仓面随机取样,进行强度试验,然后根据强度试验值按一定概率统计规律,计算混凝土强度的离差系数和强度保证率,看看是否符合规范要求,以便及时作出判断,修正混凝土的配制强度,提高拌和质量,改善混凝土运输和平仓振捣中的离析现象。另一
During the construction of concrete dam, in order to control the quality of concrete construction and correct the strength of concrete in time, it is necessary to take random sampling at the port or pouring deck during concrete pouring for intensity test, and then test the concrete strength according to the certain probability Statistical rules to calculate the concrete strength of the coefficient of dispersion and strength to see if compliance with regulatory requirements in order to make timely judgments to amend the strength of concrete preparation and improve the quality of mixing to improve the segregation of concrete transport and warehousing vibration. another