超高性能混凝土研究综述

摘要

Authors gave a brief introduction to state-of-the-art developments and research progresses of ultra-high performance concrete (U HPC ) in the world , to the fundamentals of material preparations and performance indexes .Attention was placed on critical review of the material preparation technologies , mechanisms of the super high performance , and superior material properties of U HPC and its engineering applications .Finally ,critical future research directions were highlighted ,including the optimal compositions of U HPC matrix ,the setting and hardening progress ,as well as the resulting micro-structure , the micro-mechanics analysis of fiber reinforcement and toughness improvement principle , mix design and preparation technology ,testing methodology of material characteristics and its standardization .Engineering applications should be based on practical and innovative application research findings ,economic benefits ,and the establishment of suitable standards and specifications .The results show that it is clear that great advances have been achieved on both the fundamental research and the engineering application of U HPC .With environmental protection ,sustainable development being more attention ,U HPC has excellent prospects for development .%介绍了超高性能混凝土（U HPC）的提出与世界各国的研究概况、U HPC 的基本制备原理与技术指标；对 U HPC 材料制备技术、超高性能机理、材料性能、工程应用研究进展进行了综述，提出了基体材料组成、凝结硬化过程与细观结构，纤维增强增韧机理细观力学分析，组成设计与制备技术，材性测试方法与指标体系，基于工程应用的研究与创新性应用研究，经济性和标准与规范等方面的研究方向。结果表明：U HPC 在理论研究与工程应用方面都取得了可喜的进展，随着环保、可持续发展日益受到重视，U HPC 具有极好的发展前景。