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- Title
Fatigue lives of RC beams strengthened with CFRP at different temperatures under cyclic bending loads.
- Authors
HUANG, P.-Y.; ZHOU, H.; WANG, H.-Y.; GUO, X.-Y.
- Abstract
ABSTRACT Fatigue performance of reinforced concrete (RC) components strengthened with fibre reinforced polymer (FRP) is largely improved. However, temperature changes of service environment have a great effect on the fatigue behaviour of RC components strengthened with FRP. Concerning about temperature variations in subtropical areas such as South China, this paper analyses the fatigue behaviour of RC beams strengthened with carbon fibre laminate (CFL) from experimental studies and theoretical analysis under four different temperatures (5 °C, 20 °C, 50 °C, 80 °C) and five different stress levels (0.60, 0.66, 0.72, 0.78, 0.84). The paper discusses temperature fatigue behaviour of RC beams strengthened with CFL under cyclic bending loads in different service environments, and proposes a calculation formula of fatigue lives of RC beams strengthened with CFL under environmental temperatures and external forces coupling. Experimental results show that the formula not only effectively predicts the fatigue lives of the RC beams strengthened with CFL under environmental temperatures and bending loads coupling but also estimates the fatigue limits.
- Subjects
CHINA; CONCRETE beam fatigue; FIBER-reinforced concrete; CARBON fibers; PHYSIOLOGICAL effects of temperature; TROPICAL conditions
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2011, Vol 34, Issue 9, p708
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/j.1460-2695.2011.01564.x