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。
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.
出处
《岩土工程技术》
2014年第3期131-136,共6页
Geotechnical Engineering Technique
关键词
聚丙烯纤维
低弹模混凝土
渗透性
耐久性
polypropylene fiber
low elastic modulus concrete
permeability
durability
