大跨径V型结构桥梁高性能混凝土的研究与应用

High-Performance Concrete for Long-Span V-type Bridges Research and Application

本文结合大跨径V型结构桥梁重点工程建设,针对其主体V型结构桥梁质量控制的特点,从高性能混凝土的技术要求、原材料的质量,进行了桥梁高性能混凝土的配合比、基本性能、耐久性与应用研究,采用矿物掺合料及聚羧酸高性能减水剂的复掺技术对V型结构桥梁高性能混凝土性能的影响规律。

In this paper,according to the characteristics of the quality control of the main V type bridge,the technical requirements of high performance concrete and the quality of raw materials are discussed in the light of the key construction projects of the long span V type bridge. The mixing ratio,basic performance,durability and application of high performance concrete（HPC） of bridges were studied. The effect of mineral admixture and polycarboxylic acid high performance water reducer on the performance of high performance concrete of V type bridges was studied.