Experimental study on the interfacial bond between short cut basalt fiber bundles and cement matrix

被引:28
作者
Cui, Sheng'ai [1 ]
Xu, Xuefeng [1 ]
Yan, Xianjiao [1 ]
Chen, Zhao [1 ]
Hu, ChengYan [2 ]
Liu, ZuoLei [2 ]
机构
[1] Southwest Jiaotong Univ, Sch Civil Engn, Inst Civil Engn Mat, Chengdu 610031, Peoples R China
[2] Sichuan Aerosp Tuoxin Basalt Ind Co LTD, Dazhou 610100, Peoples R China
基金
中国国家自然科学基金;
关键词
Basalt fiber; Fiber sizing agent; Pull-out test; SEM; Bonding strength; Pull-out failure; Rupture failure; PULL-OUT; MECHANICAL-PROPERTIES; SURFACE-TREATMENT; CONCRETE; PERFORMANCE; STRENGTH;
D O I
10.1016/j.conbuildmat.2020.119353
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Bonding performance of basalt fiber reinforced cementitious composites (BFRCC) was studied through analyses on pull-out tests and scanning electron microscope (SEM) results. It is concluded that: (1) The rupture failure occurred for dispersed and flexible-type fibers, the pull-out failure controlled cluster-type fibers, and failure modes of alkali-resistant fibers are related to their embedded lengths (l(e)). (2) As l(e) increases, peak pull-out load (N-pmax) increases and then becomes unchanged. Appropriate le is within 15-18 mm. (3) As specimen ages, N-pmax first increases and starts to decrease at 7-day. (4) Comparisons of bonding strength among different fiber types: dispersed > flexible > alkali-resistant > cl uster. (5) SEM analyses are consistent with the macro bonding performance of BFRCC. (C) 2020 Elsevier Ltd. All rights reserved.
引用
收藏
页数:13
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