预拌自密实混凝土施工性能研究

Experimental study on construction performance of premixed self-compacting concrete

文章设计了预拌自密实混凝土的配合比,通过试验方法,重点测试其施工性能,研究影响拌和物的填充性、间隙通过性以及抗离析性的因素。统计分析结果表明,预拌自密实混凝土对加水量较为敏感;并且粗骨料含量越多,预拌自密实混凝土T500流动时间越短,坍落扩展度(SF)越大。

The mixture proportions of premixed self-compacting concrete （PSCC） were designed, and experiments were conducted to study the construction performance of PSCC. Its filling ability, passing ability and segregation resistance were researched. The test results indicate that PSCC was very sensitive to the influence of water; and that the T500 flow time of PSCC was shorter, and the slump flow （SF） was larger when the coarse aggregate ratio was higher.