Paper Title:
Bond Models for FRP Bars Anchorage in Concrete Slabs under Fire
  Abstract

Experimental tests were recently performed to evaluate resistance and deformability of nine concrete slabs reinforced with Fiber Reinforced Polymer (FRP) bars in fire situation by varying (a) external loads in the range of the service loads, (b) concrete cover in the range of usual values (30-50mm), (c) bar end shape (straight or bent) and its length at the end of the concrete members, namely in the zone not directly exposed to fire (250-500mm). Experimental results showed the importance of concrete cover in the zone directly exposed to fire for the protection provided to FRP bars, due to its low thermal conductivity. Moreover, the length of the FRP bars in the zone of slab not directly exposed to fire and its shape at the end of the members was crucial to ensures slab resistance once the resin softening reduced the adhesion at the FRP-concrete interface in the fire exposed zone of slab. In particular the anchorage obtained simply by bending bars at the end of member in a short zone (250mm) allowed attaining a good structural behavior in case of fire equivalent to that showed by slabs characterized by a large anchoring length (500mm). Tests results are briefly compared and discussed in this paper, whereas the behavior of the bar anchorage is carefully examined based on both the results of numerical thermal analysis and the predictions of a bond theoretical model adjusted for fire situation.

  Info
Periodical
Chapter
Chapter 3: Strengthening of Structures under Extreme Loading
Edited by
Ezio Cadoni and Marco di Prisco
Pages
533-538
DOI
10.4028/www.scientific.net/AMM.82.533
Citation
E. Nigro, A. Bilotta, G. Cefarelli, G. Manfredi, E. Cosenza, "Bond Models for FRP Bars Anchorage in Concrete Slabs under Fire", Applied Mechanics and Materials, Vol. 82, pp. 533-538, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hao Sheng Gu, Da Yu Zhu
Abstract:This paper attempts to reveal the flexural behaviors of concrete slab reinforced with GFRP bars. Through flexural test, the deformation...
567
Authors: Hai Xia Zhang, Guo Rui Liu, Peng Peng Cao
Abstract:This paper focuses on the characterization of flexural behavior of RC beams strengthened with Near-Surface Mounted (NSM) GFRP bars. Based on...
5496
Authors: Ning Zhang, Ai Zhong Lu, Yun Qian Xu, Pan Cui
Chapter 1: Structural Engineering
Abstract:Direct pull-out tests were performed to evaluate the bond performance of glass fiber-reinforced polymer (GFRP) reinforcing bars in cement...
543
Authors: Shi Yong Jiang, Yong Ye, Wei Fei
Chapter 2: Advanced Building Materials
Abstract:Through the pull-out test methods, the concrete strength、reinforcement diameter Basalt Fiber Reinforced Plastics Bars、the anchorage length、...
993
Authors: Ming Rong Zhou
Chapter 1: Structural Engineering
Abstract:Finite Element modelling (FEM) has been expounded with the introduction of concrete materials constitutive relationship model.Meanwhile,...
935