Paper Title:
Flexural Fracture and Fatigue Behavior of RC Beams Strengthened with CFRP Laminates under Constant Amplitude Loading
  Abstract

Externally bonded carbon fiber reinforced polymer (CFRP) materials are well suited to the rehabilitation and reinforcement of civil engineering structures due to their high specific strength, specific stiffness and corrosion resistance. To probe the fatigue behavior of CFRP strengthened concrete structures, three point bending experiments of reinforced concrete (RC) beams strengthened with carbon fibre laminate (CFL) under constant amplitude loading were performed. The histories of midspan flexibility and bending stiffness of strengthened beams were recorded automatically. And the linear curve between fatigue strength and the logarithm of fatigue life was obtained. The failure modes go through concrete cracking, CFL debonding from concrete and steel bars yielding and fracture with increasing cycles of fatigue loading. Bonded CFL increases the ductility of strengthened RC beam and results in dense distribution of cracks compared with normal RC beam, and it’s bending stiffness at damage state as well. The fatigue damage evolvement shows three stages of nucleation, steady expansion and failure. Then the failure mechanism was studied and a cumulative damage model was proposed to describe the fatigue damage and fracture process of CFL strengthened RC beams under constant amplitude loading.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
1343-1348
DOI
10.4028/www.scientific.net/KEM.306-308.1343
Citation
G. Yao, P. Y. Huang, C. Zhao , "Flexural Fracture and Fatigue Behavior of RC Beams Strengthened with CFRP Laminates under Constant Amplitude Loading", Key Engineering Materials, Vols. 306-308, pp. 1343-1348, 2006
Online since
March 2006
Export
Price
$35.00
Share

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

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

Authors: Wen Hui Bai, Bin Xiang Sun
Abstract:In order to investigate flexural behavior of simply-supported beam using recycled coarse aggregate concrete, the difference of the component...
543
Authors: Wen Hui Bai
Abstract:This paper mainly studies the deflection under short-term loading of recycled course aggregate reinforced concrete beam is calculated by...
1443
Authors: Jing Feng Wang, Bo Wang, Zhong Ming Zheng
Chapter 9: New Technology for the Preparation and Construction of Building Materials
Abstract:To research the mechanical behaviour of the novel composite beam with concrete filled steel tubular (CFST) truss, an experimental study of...
1680
Authors: Chuang Du, Xian Rong, Xue Jun Liu
Chapter 10: Advanced Forming Manufacturing and Equipment
Abstract:In this paper, a comprehensive numerical investigation is presented on the behaviour of ceramsite light aggregate concrete(CLAC) beam by the...
2491