| PVA纤维增强高性能水泥基材料的韧性 |
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| 引用本文： | 詹炳根,林兴胜,陈婷. PVA纤维增强高性能水泥基材料的韧性[J]. 合肥工业大学学报(自然科学版), 2007, 30(9): 1178-1182 |
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| 作者姓名： | 詹炳根 林兴胜 陈婷 |
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| 作者单位： | 合肥工业大学,土木建筑工程学院,安徽,合肥,230009;合肥工业大学,土木建筑工程学院,安徽,合肥,230009;合肥工业大学,土木建筑工程学院,安徽,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目(50678058) |
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| 摘 要： | 采用低掺量(纤维体积率为1%~2%)的高强度高弹模聚乙烯醇纤维(简称PVA纤维)进行延性纤维基材料韧性的研究,分析了材料组成参数(PVA纤维体积率、纤维长径比、界面改性剂和砂灰比等)对高强度高弹模PVA纤维增强水泥基材料韧性的影响。结果表明,使用高强度高弹模PVA纤维以及通过材料组分优化,可以在低体积率下得到高韧性水泥基复合材料,凹土可以做为PVA纤维的一种界面改性剂。
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| 关 键 词： | 水泥基材料 聚乙烯醇纤维 韧性 凹凸棒土 |
| 文章编号： | 1003-5060(2007)09-1178-05 |
| 修稿时间： | 2006-09-15 |
Reasearch on flexural toughness of cementitious composites reinforced with PVA fiber with high strength and a high elastic modulus |
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| ZHAN Bing-gen,LIN Xing-sheng,CHEN Ting. Reasearch on flexural toughness of cementitious composites reinforced with PVA fiber with high strength and a high elastic modulus[J]. Journal of Hefei University of Technology(Natural Science), 2007, 30(9): 1178-1182 |
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| Authors: | ZHAN Bing-gen LIN Xing-sheng CHEN Ting |
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| Abstract: | This paper investigates the flexural toughness of ductile fiber reinforced cementitious composites(DFRCCs),which contain polyvinyl alcohol(PVA) fibers with high strength and a high elastic modulus and employ low fiber volume fractions(between 1% and 2%).The influences of the fiber volume fractions,fiber aspect ratio,cement-sand ratio and the admixture for interface tailoring on the flexural toughness of PVA-DFRCCs are studied.Experimental results reveal that cementitious composites with high flexural toughness can be produced at lower PVA fiber volume fractions with the optimization of material components.Baked attapulgite can be used as the admixture for interface tailoring. |
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| Keywords: | cementitious composite polyvinyl alcohol fiber flexural toughness attapulgite |
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