在优质天然中砂源日益紧张的情况下,文章通过将特细砂与粗砂以不同比例混合,将不同比例的混合砂用于混凝土拌合,研究不同的混合比例对混凝土工作性及强度的影响,得出在满足拌合物工作性及质量要求的前提下的最佳混合比例 In the case of high-quality natural sand source is increasingly tense, the article by mixing special sand and coarse sand in different proportions, different proportions of mixed sand for concrete mixing, the study of different mixing ratio of concrete workability and strength Impact, come to meet the mixture of workability and quality requirements under the premise of the best mixing ratio