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纤维增强型水泥基复合材料的理论发展及应用分析
Theory Development and Application Analysis on Fiber Reinforced Cementitious Composites
2011年第11期
纤维增韧;ECC;桥接力学;稳态开裂;特种混凝土
Fiber reinforced; ECC; Bridging mechanics; Steady state cracking; Specific concrete
2011年第11期
1000-4637(2011)11-39-05
陈 茜,伍勇华
西安建筑科技大学材料科学与工程学院,710055

陈 茜,伍勇华

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摘 要:介绍了纤维增强型水泥基复合材料的几种主要的理论及其发展历程,其中重点介绍了近年来兴起的具有代表性的设计型材料ECC (Engineered Cementitious Composites)的相关设计理论及其应用,并归纳总结了生产应用此类材料时存在的问题,提出了相应的解决方案。 Abstract: The development of several basic theories of designing the fiber reinforced cementitious composites is introduced, among which the method and utility of designing a new appeared representative material named ECC (Engineered Cementitious Composites)is introduced carefully. Several approaches which are supposed to solve problems encountered in experiments or production are concluded and analyze
英文名 : Theory Development and Application Analysis on Fiber Reinforced Cementitious Composites
刊期 : 2011年第11期
关键词 : 纤维增韧;ECC;桥接力学;稳态开裂;特种混凝土
Key words : Fiber reinforced; ECC; Bridging mechanics; Steady state cracking; Specific concrete
刊期 : 2011年第11期
DOI :
文章编号 : 1000-4637(2011)11-39-05
基金项目 :
作者 : 陈 茜,伍勇华
单位 : 西安建筑科技大学材料科学与工程学院,710055

陈 茜,伍勇华

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引用本文

摘   要:介绍了纤维增强型水泥基复合材料的几种主要的理论及其发展历程,其中重点介绍了近年来兴起的具有代表性的设计型材料ECC (Engineered Cementitious Composites)的相关设计理论及其应用,并归纳总结了生产应用此类材料时存在的问题,提出了相应的解决方案。

Abstract: The development of several basic theories of designing the fiber reinforced cementitious composites is introduced, among which the method and utility of designing a new appeared representative material named ECC (Engineered Cementitious Composites)is introduced carefully. Several approaches which are supposed to solve problems encountered in experiments or production are concluded and analyzed. 

关键词:
纤维增韧;ECC;桥接力学;稳态开裂;特种混凝土
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(1)PE-ECC和PP-ECC[21]早期的ECC用抗拉强度和弹性模量较高的PE纤维进行增韧,后用弹性模量较小但价格较低的PVA纤维进行增韧。近年来,使用经改进的更便宜的PP纤维也获得了稳定的大于3%的抗拉延性。
(2)轻质ECC即纤维增强型泡沫混凝土或轻质骨料混凝土,和普通轻质混凝土相比,Bengi Arisoy, Hwai-Chung Wu[26]研制的高性能加气纤维混凝土添加了10%20%的水泥和0.75%1.5%的纤维,延性提高50150倍,极限抗弯强度提高50%250%,重量减轻30%65%。
(3)混杂纤维ECC S.F.U. Ahmed和 M. Maalej[27]在ECC材料中掺入钢纤维和PE纤维,其中PE纤维主要影响抗拉形变,而钢纤维则影响其极限抗拉强度,所得到的ECC材料具有显著的应变硬化和多重开裂特性, 其极限抗拉形变最多可达5%以上。
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[27] S.F.U.Ahmed,M.Maalej,Tensile strain hardening behaviour of hybrid steel-polyethylene fibre reinforced cementitious composites[J]. Construction and Building Materials, 2009(23): 96-106.

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