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通过砂、石骨料的级配优化 ,采用 52 5 #普通硅酸盐水泥和复合型高效减水剂 ,配制出实用的75N·mm- 2 ～ 85N·mm- 2 高强混凝土 ,研究了水泥用量、水灰比、砂率、高效减水剂掺量对混凝土拌和性能、力学性能的影响规律 ,为活性矿物掺合料匮乏地区的高强混凝土配合比设计和工程应用提供了科研依据
Through the optimization of gradation of sand and stone aggregate, 525 # ordinary Portland cement and composite superplasticizer were used to prepare practical 75N · mm-2 ~ 85N · mm-2 high-strength concrete. The effects of cement content , Water-cement ratio, sand rate and the content of high-efficiency superplasticizer on the mixing performance and mechanical properties of concrete, provided the scientific basis for the design and engineering application of high-strength concrete in the areas where the active mineral admixture is scarce