【摘 要】
：
针对五河口斜拉桥箱梁,重点研究了粉煤灰、粉煤灰和硅粉复掺、纤维对高性能混凝土物理力学性能和耐久性能的影响。试验研究结果表明,采用粉煤灰和高效减水剂的双掺技术,配制
【机 构】
：
江苏省高速公路建设指挥部,江苏省高速公路建设指挥部,南京水利科学研究院,南京水利科学研究院 南京市210004,南京市210004,南京市210024,南京市210024
论文部分内容阅读
针对五河口斜拉桥箱梁,重点研究了粉煤灰、粉煤灰和硅粉复掺、纤维对高性能混凝土物理力学性能和耐久性能的影响。试验研究结果表明,采用粉煤灰和高效减水剂的双掺技术,配制的C 60高性能混凝土具有良好的工作性能、力学性能和耐久性能,尤其是具有较小的干缩变形,能满足工程进度要求的3 d张拉预应力束和大体积混凝土的温控要求,高性能混凝土在五河口斜拉桥箱梁上得到了成功应用。
Focusing on the box girder of Wuhekou cable-stayed bridge, the effects of fly ash, fly ash and silica fume on the physical and mechanical properties and durability of high performance concrete are studied. Experimental results show that the C 60 high performance concrete with fly ash and superplasticizer has good workability, mechanical properties and durability, especially with small shrinkage deformation, which can meet the requirements of The requirements of the project schedule 3 d prestressed tensile prestress and mass concrete temperature control requirements, high-performance concrete in the Wuhekou cable-stayed bridge box beam has been successfully applied.
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