| 高模量PVA纤维混凝土早期收缩及抗拉试验研究 |
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| 引用本文： | 李明,申春丽,刘山洪. 高模量PVA纤维混凝土早期收缩及抗拉试验研究[J]. 重庆交通大学学报(自然科学版), 2012, 31(5): 953-956,961. DOI: 10.3969/j.issn.1674-0696.2012.05.09 |
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| 作者姓名： | 李明 申春丽 刘山洪 |
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| 作者单位： | 1.重庆市丰都县交通工程试验检测中心,重庆,408200;2.重庆交通大学土木建筑学院,重庆,400074 |
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| 基金项目： | 交通运输部西部交通科技项目 |
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| 摘 要： | 为减少或消除混凝土早期塑性收缩开裂,在常用的控制混凝土裂缝方法的基础上,探讨了添加PVA纤维控制混凝土裂纹的可行性.采用平板法塑性收缩试验和劈裂抗拉试验,对比研究了直径为14 μm的,不同掺量的高模量PVA纤维混凝土抗收缩性能.研究结果表明:当PVA纤维体积掺量为0.6％时,可消除早期塑性收缩裂纹,提高混凝土的抗拉强度.
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| 关 键 词： | PVA纤维 混凝土 收缩 裂缝 抗拉强度 |
Experimental Study on Early-Age Shrinkage and Tensile Strength of Concrete with High Modulus PVA Fiber |
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| Li Ming , Shen chunli , Liu Shanhong. Experimental Study on Early-Age Shrinkage and Tensile Strength of Concrete with High Modulus PVA Fiber[J]. Journal of Chongqing Jiaotong University, 2012, 31(5): 953-956,961. DOI: 10.3969/j.issn.1674-0696.2012.05.09 |
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| Authors: | Li Ming Shen chunli Liu Shanhong |
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| Affiliation: | 1.Feng du Traffic Engineering Test Center in Chongqing,Chongqing 408200,China; 2.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Based on the regular method used in the controlling concrete cracks,the feasibility of PVA fiber in controlling the concrete cracks in order to reduce or to eliminate the early-age plastic shrinkage and cracking was discussed.Properties of anti-cracking and shrinkage of the samples were studied by board device and splitting tensile strength test.The shrinkage resistance capability of samples with different contents of high modulus PVA fiber with diameter 14 μm was studied experimentally.The test results indicate that the early-age plastic shrinkage cracks can be eliminated and the tensile strength will be increased when the volume content of PVA fiber in concrete is 0.6%. |
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| Keywords: | Polyvinyl Alcohol(PVA) fiber concrete shrinkage crack tensile strength |
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