Assessment of adhesive setting time in reinforced concrete beams strengthened with carbon fibre reinforced polymer laminates

Fayyadh, Moatasem M. and Razak, Hashim Abdul (2012) Assessment of adhesive setting time in reinforced concrete beams strengthened with carbon fibre reinforced polymer laminates. Materials & Design, 37. pp. 64-72. ISSN 0261-3069

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Official URL: https://doi.org/10.1016/j.matdes.2011.12.031

Abstract

The strengthened effectiveness and the performance capacity of repaired Reinforced Concrete (RC) structures with Carbon Fibre Reinforced Polymer (CFRP) sheets is dependent on the properties of the adhesive interface layer. Adhesive material requires a specific setting time to achieve the maximum design capacity. Adhesive producer provides technical data which demonstrates the increase with time of the capacity, up to the maximum. The aim of this study is to investigate the effect of the adhesive setting time on the modal parameters as an indication of the effectiveness of CFRP on repaired RC beams. Firstly, datum modal parameters were determined on the undamaged beam and subsequently the parameters were obtained when damaged was induced on the RC beam by application of load until the appearance of the first crack. Finally, the RC beam is repaired with externally bonded CFRP sheets, and modal parameters are once again applied after 0.5, 1, 2, 3, 5, 8, 11, 15 and 18. days. The comparison is made with the data based on half day results in order to monitor the change in the modal parameters corresponding to the adhesive setting time. The modal parameters where used as indicators for the effectiveness of CFRP are affected by the adhesive time as shown in this study. Results are compared with the adhesive technical data provided by the adhesive producer.

Item Type: Article
Additional Information: 909UU Times Cited:2 Cited References Count:35
Uncontrolled Keywords: Adhesive material, Bonding, CFRP sheets, Composites polymer matrix, Modal parameters, Non-destructive testing, Setting time, Adhesive materials, Carbon fibers, Composite beams and girders, Fiber reinforced plastics, Nondestructive examination, Reinforced concrete, Modal analysis
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 24 Jan 2014 15:26
Last Modified: 05 Dec 2019 06:16
URI: http://eprints.um.edu.my/id/eprint/9040

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