Journal article
Width factor for externally bonded FRP-to-concrete joints
Construction & Building Materials, Vol.155, pp.818-829
30/11/2017
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Abstract
The width factor is an important parameter that describes the properties of an externally bonded reinforcing plate-to-concrete bonded interface. The factor, which reflects the variation of bond strength due to change of the width of concrete substrate for a certain width of plate, is commonly derived from plate-concrete joint tests (also known as pull tests) indirectly. There, however, exists inherent and significant scatter in the test results that can adversely influence the empirically derived width factor. In order to investigate the reliability of width factor models, this paper reports the details of a three-dimensional (3D) finite element model (FEM) that considers debonding as concrete material failure by incorporation of a concrete damage-plasticity theory. A detailed analysis of the width factor is conducted using the FEM, from which a new model for the width factor of externally bonded (EB) fibre reinforced polymer (FRP)-to-concrete joint is proposed. The width factor is found to be a function of not only the FRP plate and concrete widths but also concrete strength and plate rigidity. It is found that most of the existing width factor models may overestimate the width effect.
Details
- Title
- Width factor for externally bonded FRP-to-concrete joints
- Creators
- Jian-Ping Lin - Huaqiao UniversityYu-Fei Wu - RMIT UniversityScott T Smith - Southern Cross University
- Publication Details
- Construction & Building Materials, Vol.155, pp.818-829
- Publisher
- Elsevier BV
- Grant note
- This work was supported by the National Natural Science Foundation of China (Grant Nos. 51378449 and 51608211), the Provincial Natural Science Foundation of Fujian Province (Grant No. 2017J05083), and the Scientific Research Funds of Huaqiao University (Grant No. 16BS403).
- Identifiers
- 991012927085402368
- Copyright
- © 2017 Elsevier Ltd. All rights reserved.
- Academic Unit
- School of Environment, Science and Engineering; Science; Faculty of Science and Engineering; National Centre for Flood Research
- Language
- English
- Resource Type
- Journal article