| 纤维亲水性能对改善混凝土抗冻能力的影响 |
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| 引用本文： | 陈 昕,刘 刚,刘 成,羊 鹏,赵元兵.纤维亲水性能对改善混凝土抗冻能力的影响[J].四川建筑科学研究,2014(1):245-248. |
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| 作者姓名： | 陈 昕 刘 刚 刘 成 羊 鹏 赵元兵 |
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| 作者单位： | [1] 四川大学建筑与环境学院,四川成都610065 [2] 四川省交通运输厅交通勘察设计研究院,四川成都610017 [3] 四川兴蜀公路建设发展有限责任公司,四川成都610041 |
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| 摘 要： | 纤维的亲水性能对改善混凝土抗冻性能的作用有着重要影响,本文通过快冻法研究了纤维素纤维、聚丙烯纤维混凝土的抗冻性能,探讨了纤维对混凝土抗冻性能的影响.实验结果表明：掺加聚丙烯（憎水性）纤维削弱了混凝土的抗冻性能;而掺加纤维素（亲水性）纤维可以明显改善混凝土的抗冻性能,且随着冻融循环次数的增加,纤维素纤维的作用愈加明显;300次冻融循环后,纤维素纤维混凝土的相对动弹性模量是素混凝土的1.38倍,而质量损失率只有素混凝土的58％.
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| 关 键 词： | 亲水性 聚丙烯纤维 纤维素纤维 冻融 相对动弹性模量 |
The influence of fiber hydrophilic to improve the frost resistance of concrete |
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| HE Bot,ZHANG Sheng,CHEN Xin,LIU Gang,LIU Cheng,YANG Peng,ZHAO Yuanbing.The influence of fiber hydrophilic to improve the frost resistance of concrete[J].Building Science Research of Sichuan,2014(1):245-248. |
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| Authors: | HE Bot ZHANG Sheng CHEN Xin LIU Gang LIU Cheng YANG Peng ZHAO Yuanbing |
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| Affiliation: | 3 ( 1. College of Architecture and Environment , Siehuan University, Chengdu 610065, China; 2. Siehuan Communication Surveying ＆ Design Institute, Chengdu 610017, China; 3. Siehuan Xing Shu Road Construction Development Co. ,Ltd. ,Chengdu 610041 ,China) |
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| Abstract: | Fiber hydrophilic can have a important impact on improvement of the effect of concrete frost resistance, in this paper, by quick freezing method to research the antifreeze performance of cellulose fiber/polypropylene fiber concrete, probes into the influence of fiber on concrete frost resistance performance. The experimental results show that adding polypropylene fiber （ hydrophobic ） weaken the antifreeze of concrete performance, and adding cellulose （hydrophilic） fiber can obviously improve the antifreeze of concrete performance, and with the increase of freeze-thaw cycles, the role of cellulose fiber are becoming ever more obvious;After 300 cycles of freeze-thaw,relative dynamic elastic modulus of cellulose fiber concrete is 1.38 times of plain concrete,and the mass loss rate is only 58% of the plain concrete. |
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| Keywords: | hydrophilia polypropylene fiber cellulose fiber freezing-thaw relative dynamic elastic modulus |
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