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- Title
Effect of Curing Conditions on Bond Behavior between Carbon Fiber-Reinforced Polymer and Concrete.
- Authors
Er-yu Zhu; Ze-wen Zhu
- Abstract
A total of 16 pullout specimens were tested to investigate the effect of curing conditions on bond behavior of near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP) strengthening concrete under curing temperatures from 35 to 65°C (95 to 149°F) and curing times from 6 to 12 hours. It was compared to that of specimens in ambient conditions (16°C [60.8°F]). On these bases, a nonlinear local bond-slip model was proposed. Two key parameters-- A and B--are employed in the proposed bond-slip model, the specific expressions of which were mainly related to ultimate pullout load and peak shear stress of the specimen. The results show that the bond behavior of CFRP strip represents a negative quadratic curve with curing temperature and positive inverse tangent curves with curing time, respectively. The nonlinear local bond-slip model, considering the curing temperature-time, is deduced and validated.
- Subjects
POLYMER-impregnated concrete; FIBER-reinforced concrete; EFFECT of temperature on concrete; CONCRETE curing; SUPERABSORBENT polymers; SHEARING force; PEAK load; CARBON fiber-reinforced plastics
- Publication
ACI Materials Journal, 2019, Vol 116, Issue 6, p5
- ISSN
0889-325X
- Publication type
Article
- DOI
10.14359/51719148