中文摘要：

为解C80混凝土大面积浇注开裂问题,通过配比试验对C80高性能混凝土的工作特性进行了研究,取得了满足工程设计和施工工艺要求的C80混凝土配合比,并在呼图壁青年渠首改造工程中得到了应用。研究表明C80混凝土优异的工作性能是保证工闸底板混凝土施工质量的关键,优质的活性细掺合料对于优化C80高性能混凝土的工作性能、降低水化热、防止裂缝发生、提高耐久性及力学性能发挥着重要作用。

英文摘要：

In order to treat large area of cracking of high-performance concrete,this paper studied the working characteristics of C80 high-performance concrete by mixture experiment,and gained the mixture proportion which satisfied the request of engineering design and construction technique,and applied in the reconstruction of Young ditch of Hutubi-river.The study indicated that the excellent working characteristics of C80 concrete were the key to the quality of the steep bottom of pouring gate,and admixture dosages with high quality were very important to optimize working characteristic,debase heat of hydration,prevent crevice,and enhance the lasting quality and mechanical property of C80 high-performance concret.