本文介绍了准朔铁路跨黄河特大桥工程在施工过程中,针对工程特点与技术要求,采用高性能的膨胀剂,并通过与施工相近的模拟试验的方法,对混凝土配合比进行优化设计,确定最佳技术方案,精心组织施工,从而取得了良好的效果。 In this paper, during the construction process of Zhushiu railway cross-Yellow River super-large bridge project, in view of engineering characteristics and technical requirements, using high-performance expansion agent, and through the simulation test similar to the construction method to optimize the design of concrete mix to determine The best technical solutions, well-organized construction, which has achieved good results.