Sprayed Glass Fiber–Reinforced Mortar with or without Basalt Textile Reinforcement for Jacketing of Low-Strength Concrete Prisms
Publication: Journal of Composites for Construction
Volume 23, Issue 2
Abstract
The external jacketing method using cement-based matrices and textile reinforcement has gained popularity for the enhancement of strength and ductility characteristics of reinforced concrete members. In this study, glass fiber–reinforced mortar (GFRM) with or without basalt textile reinforcement was used for external jacketing of low-strength concrete prisms. An innovative spraying method was used during the application of the cement-based matrix to the specimen’s surface. Investigations were carried out on a large number of concrete prisms with five different cross-sectional geometries (circular, square, and rectangular, with cross-sectional aspect ratios of 1.5, 2, and 3). At the end of the tests, it was shown that the proposed retrofit methodology is effective for the enhancement of performance of low-strength concrete members. The spraying technique is practical and feasible, particularly for the cases in which access to the structural members that are destined to be retrofitted is limited. Furthermore, a simple analytical approach based on the effectively confined concrete area concept is also presented for predicting the peak strength and the ultimate strains of the retrofitted specimens.
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Acknowledgments
The authors acknowledge the company Fibrobeton for their great support during the planning, construction, and retrofitting processes of the test specimens. The administration and staff members of the Building Materials Laboratory of Istanbul Technical University are also acknowledged.
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Journal of Composites for Construction
Volume 23 • Issue 2 • April 2019
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©2019 American Society of Civil Engineers.
History
Received: Feb 6, 2018
Accepted: Aug 23, 2018
Published online: Jan 10, 2019
Published in print: Apr 1, 2019
Discussion open until: Jun 10, 2019
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