A comparison of the bond behavior of PBO-FRCM composites determined by double-lap and single-lap shear tests
作者： L.H. Sneed , T. D'Antino , C. Carloni , C. Pellegrino
DOI: 10.1016/J.CEMCONCOMP.2015.07.007
关键词: Materials science 、 Bond length 、 Shear (geology) 、 Cementitious matrix 、 Direct shear test 、 Composite material 、 Structural engineering 、 Load redistribution 、 Composite number
摘要: Abstract This paper presents the results of an investigation on bond behavior and stress-transfer mechanism polyparaphenylene benzobisoxazole (PBO) fiber-reinforced cementitious matrix (FRCM) composites bonded to a concrete substrate using double-lap single-lap shear tests. Results tests with different composite lengths widths are presented compared those from previously reported by authors. The idealized load response developed is found characterize in tests, although few key differences. With test, redistribution among strips influences post-peak if debonding does not occur equally both strips. Values ultimate (peak) stress determined generally consistent with, slightly lower than, when length longer than effective length.
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