|
Title |
Tensile Behavior of Textile Reinforced Concrete Members Reinforced with a Carbon Grid by Different Manufacturing Methods
|
|
Authors |
김경민(Kyung-Min Kim) ; 박성우(Sung-Woo Park) |
|
DOI |
https://doi.org/10.4334/JKCI.2023.35.1.111 |
|
Keywords |
탄소그리드; 인장보강재; 직물섬유보강콘크리트; 인장거동; 탄소섬유보강재료 carbon grid; reinforcement; textile reinforced concrete; tensile behavior; carbon fiber reinforced polymer |
|
Abstract |
In order to evaluate the tensile behavior of textile reinforced concrete with a gird-type carbon fiber reinforced polymer (CFRP) reinforcement (hereafter referred to as carbon grid), direct tensile tests were conducted on nine specimens made using different manufacturing methods, and which had varying cross-sectional areas, spacings, tensile strengths, and elastic moduli of longitudinal strands. In the case of specimens reinforced with biaxial warp knitting structured carbon grids, stiffness decreased due to the occurrence of continuous cracks. In specimens reinforced with cross-laminated structured carbon girds, there was no significant decrease or increase in stress due to crack initiation, and the stress hardly increased or partially decreased as tensile stress was transferred to the carbon grids. All specimens were, though, destroyed by the crush and separation of mortar at the ends of the specimens or the slip between the specimens and the steel plates. Accordingly, it was found that tensile stress corresponding to the level of 0.03 to 0.86 of the tensile strength was applied to the carbon grids.
|