Using engineering cementitious composites as an adhesive for near-surface mounted FRP bars strengthening concrete/masonry structures

Hawkins, Jared (2016) Using engineering cementitious composites as an adhesive for near-surface mounted FRP bars strengthening concrete/masonry structures. [USQ Project]

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Abstract

Internationally, the cost of maintenance and rehabilitation of infrastructure is growing, and has reached roughly 50% of total construction expenditure in many countries. The near-surface mounted (NSM) FRP method has attracted increasing attention worldwide as one of the most promising techniques for structural strengthening and as an effective alternative to the externally bonded FRP method.

In the NSM FRP method, grooves are cut into the concrete cover of a concrete member for the embedding of FRP bars using an adhesive. Compared to the externally bonded FRP method, the NSM FRP method has a number of advantages including a reduced risk of de-bonding failure and better protection of the FRP reinforcement. However, the brittle nature of cement paste as the groove filling material leads to a preference to use epoxy adhesives as they have better tensile and ductile properties. The proposed project aims to use engineered cementitious composites (ECC) as groove filling material as it has higher tensile strength and excellent ductility. A series of laboratory testing will be conducted to study the bond-slip behaviour for NSM FRP bars using ECC and the testing results can also be used for the calibration of the theoretical model which will be developed as part of the project.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Honours) Major Civil Engineering project
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Supervisors: Zhuge, Yan
Date Deposited: 20 Jul 2017 04:26
Last Modified: 20 Jul 2017 04:26
Uncontrolled Keywords: engineering cementitious composites; adhesive; bonded FRP method; concrete/masonry structures
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
URI: http://eprints.usq.edu.au/id/eprint/31416

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