Title

Fatigue and Flexural Behaviour of Reinforced Concrete Beams Strengthened with a Fibre Reinforced Cementitious Matrix

Abstract

A recent report indicates that there are more than 63,000 US bridges in need of repair. One of the most recent innovative composite materials that has been proposed to the market is a Fabric Reinforced Cementitious Matrix (FRCM) strengthening system. This system consists of two components: the structural reinforcement mesh is a polyparaphenylene benzobisoxazole (or PBO) fibre composite and the cementitious matrix is a nontoxic grout system that is based on portland cement with a low dosage of dry polymers. All of the beam specimens that examined in this study were subjected to fatigue loading for 2 million cycles before flexure testing. The stiffness reduction of both unstrengthened and strengthened reinforced concrete beams was evaluated. The crack propagation and crack widths were determined.

Meeting Name

7th Biennial Conference on Advanced Composites in Construction, ACIC 2015 (2015: Sep. 9-11, Cambridge, United Kingdom)

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Concrete beams and girders; Concretes; Cracks; Fatigue of materials; Portland cement; Reinforced concrete; Stiffness; Stiffness matrix; Strengthening (metal); Beam stiffness; Cementitious matrices; Fibre composites; Polyparaphenylenes; Reinforced concrete beams; Stiffness reduction; Strengthening systems; Structural reinforcement; Polymer matrix composites; Fabric reinforced cementitious matrix (FRCM); Fatigue

International Standard Book Number (ISBN)

978-1-77808-097-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 NetComposites Limited, All rights reserved.

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