纤维增强水泥基复合材料力学性能的研究进展

Research Progress on Mechanical Properties of Fiber-Reinforced Cement Matrix Composites

【目的】为各类纤维在水泥基复合材料中的应用提供参考与借鉴。【方法】纤维作为一种新兴的水泥基增强材料,由于其在抗裂、防渗、增强、增韧等方面的优异表现,近些年一直得到广泛的关注和研究。本研究基于国内外学者的理论和试验研究,综述纤维增强水泥基复合材料的研究现状、各类纤维增强水泥基复合材料力学性能的作用机理及作用效果。【结果】当纤维本身有着较高强度和弹模,在掺入水泥基体中后便会有较好的增强增韧效果;当纤维本身不具有较高强度及弹模时,其优势主要体现在增韧和变形上。【结论】不同种类的纤维以及不同长度、不同掺量的同种纤维都会对水泥基体的力学性能造成不同的影响。

[Purposes]To provide reference for the application of various fibers in cementitious composites.[Methods]As an emerging cementitious reinforcement material,fiber has received extensive attention and research in recent years due to its excellent performance in crack resistance,impermeability,reinforcement and toughening.Based on the theoretical and experimental research of scholars at home and abroad,this study reviews the research status of fiber-reinforced cementitious composites,the mechanism and effect of the mechanical properties of various fiber-reinforced cementitious composites.[Findings]When the fiber itself has high strength and elastic mold,it will have a better reinforcement and toughening effect after being incorporated into the cement matrix;When the fiber itself does not have high strength and elastic mold,its advantages are mainly reflected in toughening and deformation.[Conclusions]Different kinds of fibers and the same kind of fibers of different lengths and different dosages will have different effects on the mechanical properties of cement matrix.