地铁车站含聚丙烯纤维混凝土结构的抗裂防渗性能研究

在车站混凝土中掺入聚丙烯纤维,并用于上海市地铁7号线一车站的抗裂防渗现场施工段内混凝土结构中,测量现场混凝土裂缝点的温度和应变情况.结果表明,掺入聚丙烯纤维能够明显提高混凝土结构的抗裂防渗性能,满足地铁车站抗裂防渗设计要求.

Study on Anti-crack and Waterproof Technique of Polypropylene Fiber in Subway Station Concrete Structures

The crack and leakage in concrete structure of subway stations is a difficult problem and need to urgently resolve in the near future.This paper presented adding polypropylene fiber to concrete,and the volume content of polypropylene fiber is determined by limit state design.This method was used in one(subway) station of Shanghai Rail Transit Line 7.The experimental results indicate that polypropylene fiber can improve the anti-crack and water waterproof proof performance of concrete structures,satisfy the ...