经济环保型工程水泥基复合材料力学性能研究进展

摘要/Abstract

摘要： 基于微观力学理论设计的工程水泥基复合材料(ECC)具有应变硬化行为和多重开裂特性,其极限拉伸应变是纤维增强混凝土的500倍,具有优异的裂缝控制能力,可显著提高混凝土结构的力学性能和耐久性能。然而,有限的原材料产地和高昂的生产成本限制了ECC的广泛应用。基于此,本文回顾了ECC的相关文献,论述了利用本地原材料甚至是再生废弃材料制备出满足性能要求ECC的可行性,讨论了胶凝材料、骨料和纤维材料对ECC力学性能的影响规律以及作用机理。此外,探讨了ECC的研究方向,以期为日后的研究提供参考。

关键词: 工程水泥基复合材料, 再生废弃材料, 胶凝材料, 骨料, 纤维, 力学性能

Abstract: Engineered cementitious composites (ECC) designed based on micromechanics theory have strain-hardening behavior and multiple cracking characteristics. The ultimate tensile strain of ECC is 500 times that of fiber-reinforced concrete. ECC have excellent crack control ability, and can significantly improve the mechanical properties and durability of concrete structures. However, the limited raw material origin and high production cost limit the broad application of ECC. Based on this, this paper reviews the relevant literature on ECC, discusses the feasibility of using local raw materials or even recycled waste to prepare ECC that meets the performance requirements, and discusses the influences of cementitious materials, aggregates and fiber materials on the mechanical properties of ECC and the relative mechanism. In addition, the research direction of ECC is discussed to provide a reference for future research.

Key words: engineered cementitious composites, recycled waste, cementitious material, aggregate, fiber, mechanical property

中图分类号:

TU528

李曈, 任庆新, 王庆贺. 经济环保型工程水泥基复合材料力学性能研究进展[J]. 硅酸盐通报, 2023, 42(10): 3421-3431.

LI Tong, REN Qingxin, WANG Qinghe. Research Progress on Mechanical Properties of Economic and Environment-Friendly Engineered Cementitious Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(10): 3421-3431.

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