摘要
为研究冻融循环条件下纤维混凝土抗冻性能,采取快速冻融试验对不同掺加方式下钢纤维、聚丙烯纤维混凝土性能进行研究。并通过SEM分析了其微观结构。试验结果表明,在纤维掺量固定时,不同纤维掺加方式的混凝土性能有显著不同。随冻融循环次数的增加,其质量损失、动弹性模量、抗压、抗折强度都有显著不同变化,混杂纤维混凝土性能较单一纤维混凝土好,层布式纤维混凝土性能较整体式纤维混凝土好。
In order to study the frost resistance performance of fiber reinforced concrete under freeze-thaw cycle, the performance of steel fiber and polypropylene fiber concrete under different mixing methods was studied by rapid freezing and thawing test. And its microstructure was analyzed by SEM. The test results show that the concrete properties of different fibers were significantly different when the fiber content was fixed. With the increase of the number of freeze-thaw cycles, the mass loss, the dynamic elastic modulus, the compression strength and the flexural strength had different changes. The performance of the hybrid fiber concrete was better than that of the single fiber concrete and the layer fabric fiber. The performance of layered fiber reinforced concrete was better than that of integral fiber reinforced concrete.
作者
乔宏霞
李江川
朱飞飞
彭宽
QIAO Hongxia;LI Jiangchuan;ZHU Feifei;PENG Kuan(Key laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;Engineering Research Center of the Western Ministry of education for Civil Engineering of Disaster Prevention and Disaster Reduction, Lanzhou University of Technology, Lanzhou 730050, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第1期1114-1119,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51468039
51168031)
中国科学院盐湖资源与化学重点实验室开放基金资助项目(KLSLRC-KF-13-HX-8)
关键词
纤维混凝土
钢纤维
聚丙烯纤维
冻融循环
抗冻性
微观结构
fiber reinforced concrete
steel fiber
polypropylene fiber
freeze-thaw cycle
frost resistance
microstructure
