聚丙烯纤维混凝土基本力学性能试验研究  

Experimental Study on Basic Mechanical Properties of Polypropylene Fiber Concrete

作　　者：夏智 XIA Zhi(China Railway Bridge Bureau Group Sixth Engineering Co.Ltd.,Wuhan 430051,China)

机构地区：[1]中铁大桥局集团第六工程有限公司,武汉430051

出　　处：《武汉理工大学学报(交通科学与工程版)》2025年第1期135-141,共7页Journal of Wuhan University of Technology(Transportation Science & Engineering)

基　　金：湖北省交通运输厅科技项目(2022-11-2-8)。

摘　　要：文中设计了10组混凝土弯曲韧性试块,采用四点弯曲试验评定其受弯开裂性能.通过对试验现象、抗折强度和断裂能的分析可知:掺入聚丙烯纤维会影响混凝土的和易性,当聚丙烯纤维体积掺量为0.1%~0.7%时,能够在不同程度上提高混凝土的抗折强度和韧性,其中体积掺量为0.4%时,试块的极限抗弯承载力表现最为优秀,体积掺量为0.2%时,试块的断裂能吸收表现最为优秀.Ten groups of concrete flexural toughness test blocks were designed,and their flexural cracking performance was evaluated by four-point bending test.Through the analysis of experimental phenomena,flexural strength and fracture energy,it is known that the workability of concrete will be affected by adding polypropylene fiber,and the flexural strength and toughness of concrete can be improved to varying degrees when the volume content of polypropylene fiber is 0.1%~0.7%.When the volume content is 0.4%,the ultimate flexural capacity of the block is the best,and when the volume content is 0.2%,the fracture energy absorption of the block is the best.

关 键 词：聚丙烯纤维混凝土 弯曲韧性试验 混凝土抗裂 力学性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]