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用“绝对体积法”进行砼的配合比设计是国内外主要方法之一,而材料的视比重是计算的关键.由于重量取值及计算体积取值状态组合有三,所以视比重值有三个,这一点在我国规范及书籍中定义不清,影响砼配合比设计,而且取值不当,增加了水泥的用量.本文作者通过对骨料及砼拌和物的大量试验与分析,提出了对视比重概念的见解和砼配合比设计的合理状态,对明确计算及节省水泥有其意义.
With “absolute volume method” for concrete mix design is one of the main methods at home and abroad, and the apparent weight of the material is the key to the calculation.As the weight value and calculation of the volume value of the state combination of three, so depending on the value of three, This point is unclearly defined in our country’s norms and books, affecting the concrete mix design, and the inappropriate value, increasing the amount of cement.Through a large number of experiments and analysis of aggregate and concrete mix, the author put forward the visual gravity The concept of the concept of concrete mix design and the rational status of a clear calculation and save the cement has its significance.