随着现代工程技术的不断进步,超高层、超深井、大跨度等复杂恶劣环境对水泥基材料提出了更高的要求,鉴于水泥基材料是一种具有多尺度结构特征的复合材料,因此使用多尺度纤维是增强水泥基材料性能的有效途径.本文在综述国内外水泥基材料多尺度特征研究进展的基础上,介绍了水泥基材料的多尺度模型发展概况,指出了目前的研究中各个尺度模型之间的联系不够紧密的不足;总结了水泥基材料内部裂纹由微观至宏观的多尺度扩展、破坏过程;论述了单一纤维和多尺度纤维增强水泥基材料的研究现状,提出了目前应加强对多尺度纤维的增强机理的研究、开发性价比更高的纤维体系等建议.最后对多尺度纤维增强水泥基材料的研究方向进行了展望.
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