成型工艺对低水胶比高强混凝土性能影响的研究

Research on the effect of concrete preparation techniques on the high-strengthen concrete performance at low water-cement ratio

随着现代化建设的发展需要,高强混凝土被越来越多地应用于各类建设工程中。文章结合宿迁市交通建设工程项目,在水胶比0.26~0.20的范围内,分别采用一般成型工艺、"裹砂法"以及"裹石法"3种混凝土成型工艺配置低水胶比高强混凝土,探讨成型工艺对低水胶比高强混凝土的性能影响及原因。结果表明,采用"裹砂法"或者"裹石法"可有效提高低水胶比混凝土的强度,同时改善工作性能。

With the development of modern construction, high-strengthen concrete is used in more and more kinds of construction projects. In this paper, three kinds of concrete preparation techniques： conventional molding process, cement wrapped sand methods, cement wrapped stone methods , are applied in the research of the causes and the differences in the concrete performance at low water-cement ratio in the range of 0.26-0.20 with traffic engineering in Suqian city. The results show that high-strength concrete at low water-cement ratio prepared with cement wrapped sand methods or cement wrapped stone methods can efficiently improve the compress strength, improving the work performance also.