在生产实践中,存在大量相互依存和制约的变量,而且在一定的条件下相互转化,这些变量之间除了确定性的关系外,还存在着非确定性的相关关系,当对相互转化的规律了解得很深刻时,相关关系又可转化为确定性关系。本文通过回归分析,探讨混凝土配合比设计中各有关参数的确定性关系。一、问题的提出水灰比、用水量和砂率,是混凝土配合 In production practice, there are a large number of variables that are interdependent and constrained, and they are transformed under certain conditions. In addition to the deterministic relationship between these variables, there is also a non-deterministic correlation, when the law of mutual transformation When the understanding is profound, the relationship can be transformed into a deterministic relationship. In this paper, regression analysis is used to explore the deterministic relationship between the relevant parameters in concrete mix design. First, the issue of water-cement ratio, water consumption and sand rate, is concrete with