| Title |
Structural Performance of Shear-Dominant Concrete Shear Walls Reinforced with Carbon Fiber-Reinforced Polymer(CFRP) Rebars |
| Authors |
우진석(Woo, Jin-Seok) ; 김다예(Kim, Da-Ye) ; 김동이(Kim, Dong-I) ; 김선우(Kim, Sun-Woo) ; 박완신(Park, Wan-Shin) ; 윤현도(Yun, Hyun-Do) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.5.231 |
| Keywords |
Carbon Fiber-Reinforced Polymer (CFRP); Shear Wall; Shear Performance; Shear Deformation; Crack Pattern |
| Abstract |
This study examined the impact of replacing conventional steel reinforcement with carbon fiber-reinforced polymer (CFRP) on the structural
performance of concrete shear walls with an aspect ratio of 1.0. Three concrete shear walls with identical shapes and dimensions were
constructed and tested under cyclic lateral loading until failure. The reference wall (SS-SW) was reinforced with traditional steel bars. One
wall (CS-SW) used vertical CFRP and horizontal steel reinforcement, while the other (CC-SW) incorporated CFRP reinforcement in both
directions. Structural performance was assessed based on hysteretic behavior, crack patterns, energy dissipation, deformation, and strain
characteristics. Results indicated that, for shear-dominated concrete walls with square cross-sections, the CC-SW and CS-SW reinforced with
CFRP showed lower initial stiffness compared to the SS-SW. However, the CS-SW displayed overall performance similar to that of the
steel-reinforced wall. CFRP reinforcement improved crack recovery due to its elastic properties, leading to reduced residual crack widths. At
the same time, maximum crack widths and shear contributions increased, raising the potential for brittle failure. The CS-SW, which combined
vertical CFRP with horizontal steel reinforcement, offset the limitations of CFRP by leveraging the benefits of steel. As a result, this hybrid
system achieved similar load-drift behavior, energy dissipation, and deformation performance to the steel-reinforced wall. |