Enhancement of bond characteristics of ribbed-surface GFRP bars with concrete by using carbon fiber mat anchorage
Abstract The bond of fiber-reinforced polymer (FRP) reinforcement is expected to be more sensitive to the strength and geometry of the ribs than conventional steel reinforcement. In this study, the effect of carbon fiber mat anchorage on the pullout behavior of glass fiber-reinforced polymer (GFRP) bars embedded in normal concrete is studied. The studied parameters were the compressive strength of the concrete (16MPa, 24MPa, and 37MPa), and, the length and diameter of the anchorage. In total, 15 variables were studied. Ribbed GFRP bars with 10mm nominal diameter and 80mm embedment length, l d , (which is 8 times the bar diameter) were considered. Based on the results for concretes with the compressive strengths of 24MPa, and 37MPa, the anchorage systems improved the developed tensile stress of GFRP bars by as much as 7–21% compared to un-anchored bars. As shown in the results, by decreasing concrete strength, the efficiency of the carbon fiber mat anchorage on the bond behavior of the GFRP bar was reduced. Finally, an empirical expression was proposed to predict the ultimate tensile stress and the slip at ultimate tensile stress with either an anchored or un-anchored GFRP bar. Highlights Bond characteristics of carbon fiber-anchored GFRP bars are studied experimentally. Pullout tests were conducted to study different parameters. Development lengths based on experimental results of un-anchored GFRP bars are compared with the available design standards. Empirical equation is proposed for the tensile stress and free-end slip calculation of GFRP bars. Graphical abstract [DISPLAY OMISSION]
- 원문이 없습니다.
- DOI : http://dx.doi.org/10.1016/j.conbuildmat.2016.12.083
- Elsevier : 저널 > 논문
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기