超高性能混凝土的制备及力学性能研究进展

摘要/Abstract

摘要： 超高性能混凝土(UHPC)作为一种先进的水泥基复合材料,因具有优异的力学性能,在高寒、高盐碱、海洋等特殊环境或大跨度及特殊强度要求的建筑结构中被广泛应用。针对UHPC的力学性能及改良调控方法,本文从设计理论与制备方法、力学性能机理与表征、影响因素与调控手段等角度出发,详细分析介绍了UHPC在力学性能及改良方面取得的最新研究成果,对UHPC的配合比、养护制度、工作环境等影响因素进行系统分析总结,深入探讨了影响UHPC力学性能的关键因素,并针对UHPC的制备方法、耐久性研究以及相关的技术规范体系进行展望,以期能促进其在工程实践中的研发与推广应用。

关键词: 超高性能混凝土, 制备方法, 紧密堆积模型, 力学性能, 增强增韧机理, 水化硅酸钙

Abstract: Ultra-high performance concrete (UHPC), as an advanced cement-based composite material, is widely used in special environments such as high cold, high saline, and ocean, or in building structures with large span and special strength requirements because of its excellent mechanical properties. Aiming at the methods for mechanical properties and improvements of UHPC, this paper starts with analyzing and introducing the latest research achievements in the mechanical property and improvements of UHPC in detail from the perspectives of design theory and preparation method, mechanical properties mechanism and characterization, influencing factors and control methods, and subsequently combines, analyzes and summarizes the material mixture design, curing regime, service environment of UHPC. It concludes with looking forward to the preparation method, durability research and related technical specification system of UHPC, which aims to promote the research, application and popularization of UHPC in engineering practice.

Key words: ultra-high performance concrete, preparation method, close packing model, mechanical property, strengthening and toughening mechanism, calcium silicate hydrate

中图分类号:

TB321
TU528

成鑫磊, 穆锐, 刘晓英. 超高性能混凝土的制备及力学性能研究进展[J]. 硅酸盐通报, 2024, 43(12): 4295-4312.

CHENG Xinlei, MU Rui, LIU Xiaoying. Review on Preparation and Mechanical Properties of Ultra-High Performance Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(12): 4295-4312.

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