卵石混凝土在预应力箱梁施工中的应用

Application of Pebble Concrete in Prestressing Box Girder Construction

塞尔维亚当地矿石匮乏,而多瑙河卵石资源丰富,结合当地规范要求,项目部探索出一套高强度预应力卵石混凝土施工方法。结合泽蒙—博尔察大桥混凝土工程,分别从原材料选择、实验室室内试拌、拌和站动态试拌,以及工程中使用情况几个方面详细阐述了本项目使用的高强度预应力卵石混凝土工艺。

Serbia is in short of ore resources and has abundant Danube gravel,combining with local specification requirements,high-strength prestressing pebble concrete is developed for the Zemun-Borca Bridge Project.Concerning the concrete works for the Project,the high-strength prestressing pebble concrete technique is elaborated from the perspectives of raw materials selection,labs mix test,mixing station dynamic mix test and situations in the construction process.