新型聚烯烃纤维混凝土抗弯冲击性能的研究  

Testing Research on the Flexural Impact Behavior of a new kind of Polyolefin Fiber Reinforced Concrete

作　　者：邓宗才[1] 杜超超[1] 周冬至[1] 

机构地区：[1]北京工业大学城市与重大工程安全减灾省部共建重点实验室,北京100124

出　　处：《中国包装科技博览（混凝土技术）》2013年第2期44-47,共4页China Science and Technology Review

摘　　要：为了研究新型粗聚烯烃纤维对混凝土抗弯冲击性能的改善效果，本试验采用了素混凝土梁、钢纤维混凝土梁和四种掺量的中弹模粗合成纤维和新型粗聚烯烃纤维混凝土梁试件进行抗弯冲击试验研究。试验结果表明：纤维掺量增加，纤维混凝土梁试件的初裂冲击次数、破坏冲击次数和冲击延性增加，新型粗聚烯烃纤维混凝土梁试件的抗弯冲击性能明显优于相同掺量的中弹模粗合成纤维。In order to study the flexural impact behavior of a new kind of polyolefin fiber reinforced concrete, this paper test the shock resistance toughness of plain concrete, concrete with steel fiber, polyolefin fiber and mid-elastic modular fiber including four kinds of volume respectively. The results show： as the fiber＇ s volume increase, the shock resistance toughness of fiber reinforced concrete beams was evaluated by examining indicators such as first crack time and final crack time and the shock resistance toughness performance of polyolefin fiber concrete beams are more superior than that of concrete with mid-elastic modular fiber.

关 键 词：聚烯烃纤维 抗弯冲击性能 初裂 冲击延性 混凝土 

分 类 号：TU377.9[建筑科学—结构工程]