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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。
In order to solve the problem of large-area pouring and cracking of C80 concrete, the working characteristics of C80 high-performance concrete were studied through proportioning test, and the mix proportion of C80 concrete which meets the engineering design and construction process requirements was obtained. The project has been applied. The research shows that the excellent workability of C80 concrete is the key to ensure the construction quality of the slab concrete slabs. High quality active fine admixture can improve the working performance of C80 high performance concrete, reduce heat of hydration, prevent cracks, improve durability and mechanics Performance plays an important role.