| 海水海砂再生混凝土与玻璃纤维增强塑料筋黏结性能 |
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| 引用本文： | 肖建庄,廖清香,张青天,强成兵,柳献.海水海砂再生混凝土与玻璃纤维增强塑料筋黏结性能[J].同济大学学报(自然科学版),2018,46(7):0884-0890. |
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| 作者姓名： | 肖建庄 廖清香 张青天 强成兵 柳献 |
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| 作者单位： | 同济大学土木工程学院;同济大学工程结构服役性能演化与控制教育部重点实验室 |
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| 基金项目： | 国家杰出青年科学基金（51325802） |
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| 摘 要： | 采用标准立方体中心拔出试验,测试了不同组分及不同强度混凝土与玻璃纤维增强塑料(GFRP)带肋筋之间的黏结滑移性能.结果表明:再生粗骨料的使用降低了混凝土与GFRP筋之间的黏结强度,海水、海砂的使用对混凝土的黏结强度基本没有影响;不同组分混凝土与GFRP筋的黏结滑移曲线相似,无明显差别;与普通混凝土相似,海水海砂再生混凝土与GFRP筋的黏结强度随着混凝土的立方体抗压强度增加而增加.采用4种不同适用于GFRP筋的黏结滑移本构模型对试验数据进行了拟合,结果表明:4种模型均能较好地拟合本次试验曲线,其中,Malvar模型拟合程度最高.
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| 关 键 词： | 海水海砂再生混凝土 玻璃纤维增强塑料（GFRP）筋 黏结性能 拔出试验 |
| 收稿时间： | 2017/9/21 0:00:00 |
| 修稿时间： | 2018/5/3 0:00:00 |
Bond Behavior Between Seawater Sea-sand Recycled Aggregate Concrete and Glass-Fiber-Reinforced Polymer Bars |
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| XIAO Jianzhuang,LIAO Qingxiang,ZHANG Qingtian,QIANG Chengbing and LIU Xian.Bond Behavior Between Seawater Sea-sand Recycled Aggregate Concrete and Glass-Fiber-Reinforced Polymer Bars[J].Journal of Tongji University(Natural Science),2018,46(7):0884-0890. |
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| Authors: | XIAO Jianzhuang LIAO Qingxiang ZHANG Qingtian QIANG Chengbing and LIU Xian |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Performance Evolution and Control for Engineering Structures, Ministry of Education, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China and College of Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The standard cube pull out tests were conducted to study the bond behavior between the ribbed glass fiber reinforced polymer (GFRP) bars and concrete made with different raw materials and different strengths. The results showed that the use of recycled coarse aggregate (RCA) decreased the bond strength while seawater sea sand (SS) had nominal effect on that of concrete. Different concretes shared similar bond stress slip curve. Similar with natural aggregate concrete (NAC), the bond strength between seawater sea sand recycled aggregate concrete (SSRAC) and the ribbed GFRP bars improved with the increase of compressive strength of concrete. Furthermore, four bond stress slip models were selected to fit the experimental curves and the results showed that all the four models fitted the experimental curves well and the model proposed by Malvar had the highest coefficient of determination. |
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