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混凝土配合比设计,是混凝土工程全面质量管理中的一个根本性问题。而配合比设计的首要问题,则是试配强度的确定。混凝土的试配强度,我国在60年代中期至70年代末,根据当时施行的规范(GBJ10-65)的规定,在混凝土施工中一直沿用按设计标号提高10～15%来确定,方法较简便。但是,这种方法主要是依据实验数据的统计结果,没有与施工中的质量控制联系起来,因此要达到预定的设计标号是不容易的。进入80年代以米,国内已发表了大量的论文,运用数理统计的方法,对试配强度确定和配合比设汁都作了较系统的叙述,并提供了试配强度计算的公式和图表。对提高混
Concrete mix design is a fundamental issue in the overall quality management of concrete works. The primary problem of the mix design is the determination of the test mix strength. The test intensity of concrete was determined in China from the mid-1960s to the end of the 1970s according to the regulations (GBJ10-65) applied at that time, and it has been determined by increasing the design index by 10 to 15% in concrete construction. The method is relatively simple. However, this method is mainly based on the statistical results of experimental data and is not linked to quality control during construction. Therefore, it is not easy to achieve a predetermined design number. From the 1980s to the millennium, a large number of papers have been published in China. Using methods of mathematical statistics, a systematic description of the determination of the strength of the trial mix and the ratio setting of the juice has been made, and formulas and charts for calculating the strength of the trial match have been provided. Improve the mix