苏州混凝土水泥制品研究院有限公司

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混凝土多尺度特征与多尺度纤维增强理论研究进展
Research Progress of Multi-scale Characteristic and Multi-scale Fiber Reinforcing Theory for Concrete
2014年第3期
混凝土;多尺度;纤维增强
Concrete; Multi-scale; Fiber reinforcement
2014年第3期
1000-4637(2014)03-44-05
国家自然科学基金项目(51102035)
张 聪,曹明莉,许 玲
大连理工大学土木工程学院,116024

张 聪,曹明莉,许 玲

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摘 要:结合混凝土的多尺度特征与多尺度纤维增强理论,阐述了开展多尺度纤维增强混凝土研究的意义,总结了国内外对于混凝土多尺度特征与采用多尺度纤维增强混凝土的研究现状,设计了一种新型的多尺度纤维体系增强水泥基复合材料。 Abstract: According to the multi-scale characteristic and multi-scale fiber reinforcing theory, the significance of multi-scale fiber reinforced concrete is expounded. And the research status of multi-scale characteristic and multi-scale fiber reinforcing theory is summarized home and abroad. Base on this overview, a new kind of multi-scale fiber reinforced cement based composite is designed.
英文名 : Research Progress of Multi-scale Characteristic and Multi-scale Fiber Reinforcing Theory for Concrete
刊期 : 2014年第3期
关键词 : 混凝土;多尺度;纤维增强
Key words : Concrete; Multi-scale; Fiber reinforcement
刊期 : 2014年第3期
DOI :
文章编号 : 1000-4637(2014)03-44-05
基金项目 : 国家自然科学基金项目(51102035)
作者 : 张 聪,曹明莉,许 玲
单位 : 大连理工大学土木工程学院,116024

张 聪,曹明莉,许 玲

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引用本文

摘   要:结合混凝土的多尺度特征与多尺度纤维增强理论,阐述了开展多尺度纤维增强混凝土研究的意义,总结了国内外对于混凝土多尺度特征与采用多尺度纤维增强混凝土的研究现状,设计了一种新型的多尺度纤维体系增强水泥基复合材料。

Abstract: According to the multi-scale characteristic and multi-scale fiber reinforcing theory, the significance of multi-scale fiber reinforced concrete is expounded. And the research status of multi-scale characteristic and multi-scale fiber reinforcing theory is summarized home and abroad. Base on this overview, a new kind of multi-scale fiber reinforced cement based composite is designed.

关键词:
混凝土;多尺度;纤维增强
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总的来看,目前对于混凝土多尺度特征的研究主要集中于对多尺度特征的建模以及所建立模型在水泥基材料的收缩、离子扩散、流变性能等方面的应用,而从混凝土的多尺度特征的角度所开展的对于混凝土材料多尺度增强的研究还有待进一步深入。虽然近几年有学者进行了多尺度纤维增强水泥基材料的初步尝试,但依然没有实现经济性、有效性以及实用性的平衡统一。究其原因,认为有以下三个方面:其一,对混凝土材料多尺度增强的认识不足,缺乏相应的理论研究和机理分析;其二,没有寻求到经济、适用的多尺度纤维材料;其三,缺乏对于多尺度纤维增强混凝土材料优化设计的研究,包括多尺度纤维与水泥基体界面的微观力学优化设计、配合比的优化设计、混凝土基体微观结构和微缺陷分布的优化设计等。
本文从水泥基材料的多尺度结构特征出发,以多尺度破坏过程为切入点,通过选取纤维构建多尺度纤维体系、进行材料的微观结构分析和宏观力学性能测试,实现对材料力学性能的显著改善;通过尝试利用廉价的碳酸钙晶须适量替代其他价格昂贵的纤维,在一定程度上降低纤维增强水泥基复合材料的成本,可为水泥基复合材料的多尺度增强研究提供理论与试验支持,同时,对于廉价的碳酸钙晶须在水泥基复合材料中的应用亦具有促进作用。
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