| 新型低弹模混凝土性能研究 |
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| 引用本文： | 张宇亭,;左殿军,;陈文亮.新型低弹模混凝土性能研究[J].岩土工程技术,2014(3):131-136. |
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| 作者姓名： | 张宇亭 ;左殿军 ;陈文亮 |
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| 作者单位： | [1]交通运输部天津水运工程科学研究院岩土工程研究中心,天津300456; [2]河海大学岩土工程科学研究所,江苏南京210098; [3]浙江省水利河口研究院,浙江杭州310020 |
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| 摘 要： | 聚丙烯纤维低弹模混凝土以其优良的工作性能和力学性能成为近年来我国水利工程大坝防渗墙采用的主要材料之一.在室内试验的基础上,对聚丙烯低弹模混凝土的强度、塌落度特性进行了研究;开发了一套混凝土耐久性渗透水采集仪,对聚丙烯低弹模混凝土的渗透性和耐久性进行了研究,试验结果表明：与传统低弹模混凝土相比,聚丙烯低弹模混凝土的抗压、弹模变化不大,抗拉强度有提高,抗渗性能明显改善,渗透系数降低了一个数量级左右,耐久性年限可以进一步提高,研究结果为聚丙烯低弹模混凝土大坝防渗墙的工程应用提供了技术支撑.
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| 关 键 词： | 聚丙烯纤维 低弹模混凝土 渗透性 耐久性 |
Characteristics of New Low Elastic Modulus Concrete |
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| Institution: | Zhang Yuting, Zuo Dianjun, Chen Wenliang ( 1. Geotechnical Engineering Research Center, Tianjin Research Institute for Water Transport Engineering,MOT, Tianjin 300456, China;2. Geotechnical Research Institute, Hohai University, Nanjing 210098,Jiangsu,China; 3. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, Zhejiang,China) |
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| Abstract: | For its excellent performance and mechanical properties, low elastic modulus polypropylene fiber concrete has became one of the materials used in the main cut-off wall of water conservancy projects in recent years. Based on laboratory tests, low elastic modulus for polypropylene concrete strength, slump characteristics were studied; a set of concrete durability permeate collection instrument for polypropylene low elastic modulus of concrete was developed, and permeability and durability were studied. The test results showed that., compared with the traditional low elastic modulus of concrete, compressive strength and elastic modulus of polypmpylene low elastic modulus of concrete changed little, but with higher tensile strength, lower permeability and longer durability. These find ings of polypropylene low elastic modulus of concrete will provide technical supports for application of cut-off wall darn engineering. |
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| Keywords: | polypropylene fiber low elastic modulus concrete permeability durability |
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