| 混杂纤维对混凝土早期开裂性能的影响 |
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| 引用本文： | 赵晶,蔡新华,焦贺军. 混杂纤维对混凝土早期开裂性能的影响[J]. 哈尔滨工业大学学报, 2007, 39(2): 232-234 |
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| 作者姓名： | 赵晶 蔡新华 焦贺军 |
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| 作者单位： | 哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001;大连交通大学,交通运输工程学院,辽宁,大连,116028;哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001 |
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| 摘 要： | 为减少混凝土早期塑性收缩裂缝及提高混凝土韧性,采用了在混凝土中混合掺加两种纤维的方法,即高模量的耐碱玻璃纤维和低模量的聚丙烯纤维.通过试验确定了纤维的最佳掺加工艺及掺量,研究了纤维二元混杂时对混凝土强度的混杂系数,以确定混杂效果的好坏;通过平板试验比较了混杂纤维混凝土和单掺纤维混凝土及普通混凝土的早期抗开裂效果.
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| 关 键 词： | 耐碱玻璃纤维 聚丙烯纤维 混杂系数 韧性 抗开裂 |
| 文章编号： | 0367-6234(2007)02-0232-03 |
| 修稿时间： | 2005-11-07 |
Effect of hybrid fiber on early cracking behavior in concrete |
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| ZHAO Jing,CAI Xin-hua,JIAO He-jun. Effect of hybrid fiber on early cracking behavior in concrete[J]. Journal of Harbin Institute of Technology, 2007, 39(2): 232-234 |
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| Authors: | ZHAO Jing CAI Xin-hua JIAO He-jun |
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| Affiliation: | 1.School of Material Science and Engineering;Harbin Institute of Technology;Harbin 150001;China;2.School of Transportation Engineering;Dalian Jiaotong University;Dalian 116028;China |
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| Abstract: | Two kinds of fiber,which are AR-glass fiber with high elasticity modulus and polypropylene fiber with low elasticity modulus,have been added into the concrete in order to reduce the plastic shrinkage cracks of the early age as well as enhance the toughness of the concrete.The optimal amounts of two fibers have been fixed via tests,and the advantages and disadvantages of three different techniques,pre-adding,post-adding and water-adding,have been discussed.The coefficient of hybrid fibers on the strength has... |
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| Keywords: | AR-glass fiber polypropylene fiber hybrid coefficient toughness resisting cracking |
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