Hosen, M.A. and Jumaat, Mohd Zamin and Islam, A.B.M.S. and Kamruzzaman, M. and Huda, M.N. and Soeb, M.R. (2015) Eliminating concrete cover separation of NSM strengthened beams by CFRP end anchorage. Structural Engineering and Mechanics, 56 (6). pp. 899-916. ISSN 1225-4568, DOI https://doi.org/10.12989/sem.2015.56.6.899.
Full text not available from this repository.Abstract
Upgrading or strengthening of existing reinforced concrete (RC) infrastructure is an emerging demand nowadays. Near Surface Mounted (NSM) technique is very promising approach for flexural strengthening of RC members. However, premature failure such as concrete cover separation failure have been a main concern in utilizing this technique. In this study, U-wrap end anchorage with carbon fiber reinforced polymer (CFRP) fabrics is proposed to eliminate the concrete cover separation failure. Experimental programs were conducted to the consequence of U-wrap end anchorage on the flexurally strengthened RC beams with NSM-steel. A total of eight RC rectangular beam specimens were tested. One specimen was kept unstrengthened as a reference; three specimens were strengthened with NSM-steel bars and the remaining four specimens were strengthened with NSM-steel bars and U-wrap end anchorage using CFRP fabrics. A 3D non-linear finite element model (FEM) was developed to simulate the flexural response of the tested specimens. It is revealed that NSM-steel (with and without end-anchors) significantly improved the flexural strength; moreover decreased deflection and strains compared with reference specimen. Furthermore, NSM-steel with end anchorage strengthened specimens revealed the greater flexural strength and improve failure modes (premature to flexure) compared with the NSM-steel without end anchorage specimens. The results also ensured that the U-wrap end anchorage completely eliminate the concrete cover separation failure.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Polymer Composites; Flexural Strengthening; Finite Element Modeling; NSM-Steel; Debonding; End Anchorage; CFRP Fabrics |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Depositing User: | Mrs. Siti Mawarni Salim |
| Date Deposited: | 25 Jul 2016 07:41 |
| Last Modified: | 05 Feb 2020 04:43 |
| URI: | http://eprints.um.edu.my/id/eprint/16082 |
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