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试验研究了胶凝材料组成与配合比参数对超高泵送高强机制砂自密实混凝土流变性能和力学性能的影响,通过配合比基本参数优化、矿物掺合料复掺、机制砂改性和外加剂优化等配制技术,配制出坍落度大于265mm、扩展度大于650mm、倒坍落度筒流出时间在5s内、2h坍落度零损失、抗压强度等级达到C90~C100的超高泵送高强机制砂自密实混凝土。
The influence of cementitious material composition and blending parameters on the rheological properties and mechanical properties of ultra-high pumping high-strength machine-made sand self-compacting concrete was studied experimentally. Through the optimization of basic parameters of blending ratio, complex blending of mineral admixture, Admixture optimization and other preparation techniques to prepare a slump greater than 265mm, expansion greater than 650mm, pouring slump tube outflow time within 5s, 2h loss of slump zero, compressive strength of C90 ~ C100 ultra-high pump Send high-strength mechanism sand self-compacting concrete.