Abstract
This paper presents the results of an investigation on the bond behavior and stress-transfer mechanism of polyparaphenylene benzo isoxazole (PBO) fiber-reinforced cementitious matrix (FRCM) composites bonded to a concrete substrate using double-lap and single-lap shear tests. Results of double-lap shear tests with different composite bonded lengths and widths are presented and compared with those from single-lap shear tests previously reported by the authors. The idealized load response developed from single-lap shear tests is found to characterize the response of the composite in double-lap shear tests, although with a few key differences. With the double-lap shear test, load redistribution among the composite strips influences the post-peak response if debonding does not occur equally in both strips. Values of the ultimate (peak) stress determined using double-lap shear tests are generally consistent with, although slightly lower than, those determined by single-lap shear tests when the bonded length is longer than the effective bond length.
Recommended Citation
L. Sneed et al., "A Comparison of the Bond Behavior of PBO-FRCM Composites Determined by Double-lap and Single-lap Shear Tests," Cement and Concrete Composites, vol. 64, pp. 37 - 48, Elsevier, Nov 2015.
The definitive version is available at https://doi.org/10.1016/j.cemconcomp.2015.07.007
Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Bond; Cementitious matrix; Debonding; Double-lap shear test; FRCM composite; Single-lap shear test
International Standard Serial Number (ISSN)
0958-9465
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
01 Nov 2015
Included in
Architectural Engineering Commons, Structural Engineering Commons, Structural Materials Commons
Comments
Missouri University of Science and Technology, Grant None