Experimental study on bonding capacity of FRP-masonry interface with various end anchorages

doi:10.19936/j.cnki.2096-8000.20220628.005

Abstract

Abstract: The application of appropriate end anchorage measures can effectively improve the bonding force of the interface between FRP and masonry, and delay or prevent the premature end stripping failure. In order to clarify the effect of end anchorage on bond performance, a series of single shear tests of GFRP-masonry bond joint with fourkinds of end anchorage were designed and manufactured on the basis of summarizing existing end anchorage measures and methods. The failure and load-slip and strain distribution characteristics of the specimens were analyzed by single shear and tensile tests, and the working mechanism and applicability of anchorage were discussed. The experimental results show that the failure mode of FRP to masonry interface was interfacial debonding for all specimens. The ultimate bearing capacity of Carbon Spike Anchor (CSA), Adhesive-Mechanical Hybrid Anchor (AMHA), New Epoxy Anchor (NEA) and Bidirectional Carbon Patch Anchor (BCPA) specimens increased by 85.69%, 88.34%, 68.82% and 50.09%, respectively, compared with the Reference (REF) specimens. The debonding slip of BCPA specimens has the most significant limitation, which reduces by 44.58%. The test results can also provide reference for choosing the best anchorage method in practical engineering.

Key words: glass fiber fabric, masonry structure, end anchorage, experimental investigation, composites

CLC Number:

TB332

TANG Yong-ming, GUO Xiao-yun, CHEN Jie. Experimental study on bonding capacity of FRP-masonry interface with various end anchorages[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(6): 33-40.

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