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从自密实微膨胀混凝土的原材料、配合比设计、混凝土的性能及其在钢管混凝土拱的工程应用进行了研究。通过配合比的设计和优选,配制出满足设计要求的高性能混凝土,并对所配制混凝土的拌合物性能、力学性能、变形性能及耐久性进行了试验研究,确保了缓凝、保塑、自密实微膨胀的高性能混凝土性能。
The self-compacting micro-expansive concrete raw materials, mix design, the performance of concrete and its application in the concrete-filled steel tube arch were studied. Through the design and optimization of compounding ratio, the high performance concrete which meets the design requirements was formulated and the properties of the mixture, mechanical properties, deformation performance and durability of the prepared concrete were tested and studied to ensure that the properties of retarding, Self-compacting micro-expansive high-performance concrete.