多尺度纤维增强水泥基材料的研究进展

发布时间：2018-07-24 07:52

【摘要】：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。
[Abstract]:With the development of modern engineering technology, the complex environments such as super high level, super deep well, large span and so on put forward higher requirements for cement-based materials. In view of the cement-based material is a kind of composite material with multi-scale structure. Therefore, the use of multi-scale fibers is an effective way to enhance the properties of cement-based materials. On the basis of summarizing the research progress of multi-scale characteristics of cement-based materials at home and abroad, this paper introduces the development of multi-scale models of cement-based materials, and points out that the relationship between each scale model is not close enough in the present research. The internal crack propagation and failure process of cement based materials from micro to macro are summarized, and the research status of single fiber and multi scale fiber reinforced cement based materials are discussed. It is suggested that the reinforcement mechanism of multi-scale fiber should be strengthened and the fiber system with higher performance and price ratio should be developed. Finally, the research direction of multi-scale fiber reinforced cement-based materials is prospected.
【作者单位】：西南石油大学材料科学与工程学院;中国石油集团钻井工程技术研究院;油气藏地质及开发工程国家重点实验室(西南石油大学);
【基金】：国家科技重大专项课题(2016ZX05020004-008) 中国石油集团重大科技项目(2014A-4213)
【分类号】：TU528

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