| 塑管混凝土界面透气性研究 |
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| 引用本文： | 王俊颜,杨全兵,肖鸿儒.塑管混凝土界面透气性研究[J].同济大学学报(自然科学版),2010,38(7):1058-1061. |
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| 作者姓名： | 王俊颜 杨全兵 肖鸿儒 |
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| 作者单位： | 1. 同济大学,材料工程研究所,上海,200092
2. 同济大学,材料工程研究所,上海,200092;同济大学,先进土木工程材料教育部重点实验室,上海,200092 |
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| 摘 要： | 提出了一种基于压力时间衰减法测定塑管混凝土界面透气性的方法,并研究不同界面改善措施对塑管混凝土界面透气性的影响.研究结果表明:透气性试验具有较高的重复性和稳定性;塑管混凝土界面的透气性随HEA膨胀剂掺量的提高而降低;Preprufe胶带能明显改善塑管-混凝土界面的粘结性能,使压力衰减时间或抗渗性能提高了一个数量级.最后,拟合压力-时间衰减曲线,并提出了经验函数式.
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| 关 键 词： | 塑管混凝土 界面透气性 气密性 压力-时间衰减曲线 |
| 收稿时间： | 4/13/2009 2:20:55 PM |
| 修稿时间： | 5/24/2010 7:51:49 PM |
Research on Gas Permeability of Pipe-concrete Interface in Plastic-pipe Confined Concrete |
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| WANG Junyan,YANG Quanbing and XIAO Hongru.Research on Gas Permeability of Pipe-concrete Interface in Plastic-pipe Confined Concrete[J].Journal of Tongji University(Natural Science),2010,38(7):1058-1061. |
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| Authors: | WANG Junyan YANG Quanbing and XIAO Hongru |
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| Institution: | Research Laboratory of Material Engineering, Tongji University, Shanghai 200092, China;Research Laboratory of Material Engineering, Tongji University, Shanghai 200092, China;Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education, Tongji University, Shanghai 200092,China;Research Laboratory of Material Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | A pressure-time recession method to measure the gas permeability of the pipe-concrete interface in Plastic-Pipe confined Concrete (PPC) was introduced,and then effects of some improving measures on the gas permeability of the pipe-concrete interface in PPC were investigated by this method.Results indicate that this method is of high repeatability and stability.The gas permeability decreases with the increase of the expansive agent.The Preprufe tape greatly improves the bonding property of the pipe-concrete interface,and therefore,the decay time of gas pressure or the gas impermeability is an order of magnitude higher than that of the controlling PPC.Fitting curves of the gas pressure-time recession were conducted and an empirical formula was proposed. |
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| Keywords: | plastic-pipe confined concrete interfacial gas permeability gas tightness pressure-time recession curve |
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