南宁永和大桥C50钢管混凝土配合比试验研究

Test Study of Mix Proportioning of C50 Concrete Filled into Steel Tube Structure of Yonghe Bridge in Nanning

介绍南宁永和大桥钢管混凝土配合比试验,研究其限制膨胀率等各项性能,通过多因素试验方法研究胶材用量变化、砂率、不同外加剂、外掺料掺量等因素对钢管混凝土性能的影响,确定了C50钢管混凝土的配合比。

The tests of mix proportioning of C50 concrete filled into steel tube structure of Yonghe Bridge in Nanning are presented. Various behavior of the concrete that can restrict expansion rate is studied, and the mix proportioning of the concrete is finalized after influences of varied usage of binding materials, sand ratio, different admixtures and adding materials on the concrete performance are investigated through several test methods.