Affiliation:
1. CERIS, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
Abstract
<p>This paper presents experimental investigations on the bond behaviour between concrete and glass fibre reinforced polymer (GFRP) rebars at moderately elevated temperatures. Pull-out tests were performed on two types of ribbed GFRP rebars, embedded in concrete cylinders, from ambient temperature up to 300 °C; in these tests, the influence of the rebars’ diameter (8 mm<i>vs.</i>12 mm) was also investigated. Specimens were first heated up to the predefined temperature (measured at the GFRP-concrete interface) and then loaded up to failure. The results obtained confirmed that the stiffness and strength of the GFRP rebars-concrete interface suffer significant reductions with temperature; results were also compared with those obtained in a similar experimental campaign performed by the authors, in which sand-coated GFRP rebars were used: this comparison showed that the bond strength of ribbed rebars is significantly less affected by temperature than that of sand-coated ones.</p>
Publisher
International Association for Bridge and Structural Engineering (IABSE)
Reference8 articles.
1. Bank L.C. Composites for Construction - Structural Design with FRP Materials. Hoboken, New Jersey, USA: Wiley; 2006.
2. Mouritz A.P., Gibson A.G. Fire Properties of Polymer Composite Materials. Dordrecht: Springer; 2006.
3. Abbasi A., Hogg P.J. Fire testing of concrete beams with fibre reinforced plastic rebar. Composites Part A: Applied Science and Manufacturing. 2006;37(8):1142–50.
4. Rosa I.C., Firmo J.P., Correia J.R. Comportamento ao fogo de lajes de betão armadas com varões de GFRP: estudo experimental. In: Encontro Nacional de Betão Estrutural (BE 2018). Lisbon, Portugal; 2018.
5. Carvelli V., Pisani M.A., Poggi C. High temperature effects on concrete members reinforced with GFRP rebars. Composites Part B: Engineering. 2013;54(1):125–32.
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献