Efficiency of adhesive layers in strengthening schemes of concrete elements
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Dimitra V. Achillopoulou
(Civil Engineering Department, Democritus University of Thrace; Civil and Environmental Engineering Department, University of Surrey)
|
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022 | ||||
| Published in: | IABSE Symposium Prague 2022 | ||||
|
|||||
| Page(s): | 853-859 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/prague.2022.0853 | ||||
| Abstract: |
This study quantifies the efficiency of different type of adhesive layers of strengthening schemes for concrete elements. Two different Carbon Fiber Reinforced Polymer (CFRP) types are examined: a) laminated sheets and b) prefabricated plates. The systems were integrated onto concrete substrates using adhesives: i) standard plate epoxy, ii) epoxy of dry impegnation and iii) toughened adhesive. The interface response was investigated experimentally with double-lap shear tests. The efficiency was quantified with a novel semi-empirical proposed index, IC (interface capacity), representing the failure mechanism and the response type. Values close to 1 denotes a linear fully elastic performance leading to abrupt brittle failure whereas, higher values correspond to more plastic response and progressive debonding. The experimental results validated finite element simulations to define the values of IC, matching the shear response and the failure pattern of the CFRP system. |
||||
| Keywords: |
prediction model FRPs toughened epoxy layers rubber-like nanoparticles strengthening schemes
|
||||
| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
||||