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高性能混凝土是一种新型的高技术混凝土,是在大幅度提高常规混凝土性能的基础上,采用现代混凝土技术,选用优质原材料,在妥善的质量控制下制成的。除采用优质水泥、集料和水外,配制高性能混凝土还必须采用低水胶比和掺加足量的矿物细掺料与高效外加剂。它必须采用严格的施工工艺,采用优质材料配制,便于浇捣、不离析、力学性能稳定、早期强度高、具有韧性和体积稳定性等性能的耐久的混凝土,特别适用于高层建筑、桥梁以及暴露在严酷环境中的建筑结构。现对高性能混凝土在现代建筑工程的各个应用方面进行了论述,并对高性能混凝土在建筑工程中的设计要点进行分析。
High-performance concrete is a new type of high-tech concrete, which is made on the basis of greatly improving the performance of conventional concrete by adopting modern concrete technology and selecting high-quality raw materials under proper quality control. In addition to the use of high-quality cement, aggregate and water, the preparation of high-performance concrete must also use low water cement ratio and sparingly incorporated mineral fine admixtures and additives. It has to be rigorously constructed, made of high quality materials, ready for pouring, non-segregation, stable mechanical properties, high early strength, ductile concrete with toughness and volumetric stability, especially for tall buildings, bridges and exposures Building structure in harsh environment. The application of high performance concrete in modern construction engineering is discussed now, and the design essentials of high performance concrete in construction engineering are analyzed.