聚丙烯塑钢纤维对混凝土抗冻性的影响  

Study on the influence of hard polypropylene plastic fiber on the frost-resistance of concrete

作　　者：刘朋 刘俊成 王桂花 叶柄杨 LIU Peng;LIU Jun-cheng;WANG Gui-hua;YE Bing-yang(College of Civil Engineering,Baicheng Normal University,Baicheng 137000,China)

机构地区：[1]白城师范学院土木工程学院,吉林白城137000

出　　处：《白城师范学院学报》2024年第2期76-81,共6页Journal of Baicheng Normal University

基　　金：吉林省教育厅科学技术研究项目“吉林省西部地区盐碱土环境下聚丙烯塑钢纤维混凝土耐久性研究”(JJKH20230023KJ);吉林省大学生创新创业训练计划项目“矿物掺合料对吉林省西部盐碱土环境下混凝土抗盐冻性影响研究”(S202210206048)。

摘　　要：为解决吉林省西部地区混凝土建筑物和构筑物因抗冻性不足而受到冻融破坏的问题,利用聚丙烯塑钢纤维制备纤维混凝土,经过冻融试验后,观察聚丙烯塑钢纤维掺量对混凝土质量、相对动弹性模量及抗压强度变化的影响,以评价其抗冻性.结果表明:经过冻融作用后,聚丙烯塑钢纤维掺量为6 kg/m^(3)的混凝土的质量损失率和相对动弹性模量衰减率均最小;冻融前聚丙烯塑钢纤维掺量为6 kg/m^(3)的混凝土抗压强度最大,冻融后其抗压强度损失率最小.In order to solve the problem that concrete buildings and structures in western Jilin province are damaged by freezing and thawing due to insufficient frost-resistance.In this paper hard polypropylene plas-tic fiber was used to prepare fiber concrete,and the influence of the hard polypropylene plastic fiber content on concrete quality,relative dynamic elastic modulus and compressive strength after freeze-thaw test was studied to evaluate its frost-resistance.The results show that after freezing and thawing,the mass loss rate and relative dynamic elastic modulus attenuation rate of concrete with content 6 kg/m^(3) of hard polypropylene plastic fiber are the smallest.Before freezing and thawing,the compressive strength of concrete with content 6 kg/m^(3) of hard polypropylene plastic fiber is the highest,and the loss rate of its compressive strength is the lowest after freez-ing and thawing.

关 键 词：聚丙烯塑钢纤维掺量 混凝土 抗冻性 

分 类 号：TU528.572[建筑科学—建筑技术科学]