掺纤维水工混凝土性能试验研究  

Experimental Study on Fiber Reinforced Hydraulic Concrete Properties

作　　者：杨华美[1] 杨华全[1] 李家正[1] 董芸[1] 

机构地区：[1]长江水利委员会长江科学院,湖北武汉430010

出　　处：《施工技术》2010年第12期53-55,共3页Construction Technology

基　　金：水利部公益性行业科研专项资金项目(200901066);国家自然科学基金重点项目(50539010)

摘　　要：研究掺钢纤维和聚丙烯纤维水工混凝土的力学性能及断裂性能。试验结果表明,掺钢纤维可以显著改善混凝土脆性,增强混凝土韧性,增加混凝土防裂、抗裂能力;掺聚丙烯纤维混凝土抗压强度和劈拉强度均有不同程度降低,仅极限拉伸值提高10%左右,对增强混凝土结构抗拉裂缝能力作用不明显,对断裂力学性能影响也不明显。The mechanical and fracture properties of reinforced hydraulic concrete strengthened by steel fiber and polypropylene fiber are studied.The test results show that steel fiber can improve brittleness,strengthen toughness and improve anti-cracking performance of concrete obviously.And polypropylene fiber can decrease the compressive strength and splitting tensile strength of concrete to some extent.However,it improves limited stretching value by 10%,and has little influence on strengthening anti-tensioning cracks performance of concrete,as well as fracture properties.

关 键 词：水工混凝土 钢纤维 聚丙烯纤维 力学性能 断裂性能 

分 类 号：TU502[建筑科学—建筑技术科学]