自密实混凝土在桥梁工程中的应用

作者：张国志 刘秉京 徐长生 屠柳青 雷宇芳

单位：武汉大学资源与环境学院 武汉港湾工程设计研究院 武汉港湾工程设计研究院 武汉港湾工程设计研究院 武汉港湾工程设计研究院 湖北武汉　430071  湖北武汉　430071   湖北武汉　430071   湖北武汉　430071   湖北武汉　430071

关键词：自密实混凝土  高效减水剂  耐久性

分类号：U444

出版年,卷(期):页码：2004,28(1):1-5

摘要：

自密实混凝土是目前国内外混凝土界研究的热点之一,由于自密实混凝土具有很高的流动性和适宜的粘度,无需振捣而可穿过钢筋自行充满整个模板空间。使用自密实混凝土可以节约劳动力、减少噪音污染。选用适宜的原材料和配合比可配制出C30～C50,甚至强度超过80MPa的自密实混凝土。本文研究了自密实混凝土流动性的评价方法、物理力学性能并在润扬长江大桥进行了成功应用。

Self-compacting concrete is now one of the research highlights across the world. Thanks to its high fluidity and appropriate viscosity,the self-compacting concrete can pass through rebars and fill the formwork completely with vibro-compaction. Application of self-compacting concrete can cut down the labour and reduce the noise level. Using appropriate raw materials and adequate mix ratios, self-compacting concrete with strength from C30 to C50, and even more than C80 can be produced. Research was made on the methods for evaluating the fluidity of self-compacting concrete and the physical and mechanical properties of the self-compacting concrete.The successful application of the self-compacting concrete to the bridge crossing the Changjiang River at Runyang is described in detail.

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参考文献：

[1]　高流动ユソクリ—ト施工指针[M].日本土木学会. [2]　Wolfgang.Self-compactingconcreteintheprecastelementplant[R].BFT,2001.11. [3]　PeterJMBartos.Self-compactingconcrete[J].Concrete,1999,(4)

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