武汉长江隧道管片高性能混凝土应用技术研究

Application technology of high performance concrete of segment for Wuhan Yangtze River Tunnel

结合武汉长江隧道管片的设计要求,进行管片高性能混凝土配合比设计,研究管片高性能混凝土的力学性能、抗渗性能及其微观结构,改善管片高性能混凝土的集料-水泥石界面过渡区以及孔结构,提高其抗渗性能,使生产的管片的主要技术指标均能达到武汉长江隧道管片的设计要求。

To combine design requirement of segment of Wuhan Yangtze Tunnel,mix proportions of high performance concrete of segment were designed.Mechanical property,impermeability and microstructure of high performance concrete of segment were investigated.Because inteffacial transition zone between aggregate and cement paste and pore structure was improved,the impermeability of high performance concrete of segment was increased.Thus, the main technical indexes of segment that was produced could meet design requirement of segment of Wuhan Yangtze Tunnel.