短切纤维混凝土力学性能及抗氯离子渗透性能研究  

Study on Mechanical Properties and Chloride Permeability of Chopped Fiber Concrete

作　　者：杜连杰 姜瑞双 刘卫东 DU Lianjie;JIANG Ruishuang;LIU Weidong(Beijing Municipal Road&Bridge Group Co.,Ltd.,Beijing 100032,China;Shandong Transportation Institute,Jinan 250031,China;Shandong Engineering Laboratory of Bridge-tunnel Performance Evaluation and Durability Promotion,Jinan 250031,China)

机构地区：[1]北京市政路桥股份有限公司,北京100032 [2]山东省交通科学研究院,山东济南250031 [3]山东省桥隧结构性能评估与耐久性提升工程实验室,山东济南250031

出　　处：《粉煤灰综合利用》2020年第5期58-61,71,共5页Fly Ash Comprehensive Utilization

基　　金：山东省交通运输厅科技计划项目(2019B29,2018B22,2018B23)。

摘　　要：为探究玄武岩纤维和玻璃纤维对混凝土性能的影响,研究了两种纤维对混凝土抗压强度、抗折强度、弹性模量以及抗氯离子渗透性能的影响。结果表明:当纤维体积掺量在0. 1%时,玄武岩纤维和玻璃纤维均能提高混凝土的抗压强度和抗折强度,对抗折强度提高更为明显,且玄武岩纤维的增强效果要明显大于玻璃纤维。但是,两种纤维对混凝土的弹性模量基本无影响。此外,两种纤维的掺加降低了混凝土电通量和氯离子扩散系数,表明混凝土的抗氯离子渗透性能得到了改善。The effects of basalt fiber and glass fiber on the compressive strength and flexural strength of concrete,elasticity modulus and chloride permeability of concrete were studied in the paper.The results show that when the fiber volume content is 0.1%,both basalt fiber and glass fiber can improve the compressive strength and flexural strength of concrete,the increase of flexural strength is more obvious,and the strengthening effect of basalt fiber is obviously greater than that of glass fiber.However,the two kinds of fibers have little effect on the elasticity modulus of concrete.In addition,the addition of the two fibers reduced the electric flux and chloride diffusion coefficient of concrete,indicating that the chloride permeability resistance of concrete was improved.

关 键 词：玄武岩纤维 玻璃纤维 力学性能 抗氯离子渗透性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]