Laboratory tests on strengthening steel and concrete elements with high-strength concrete

Author:

Traykova Marina1,Georgiev Lazar1,Abdulahad Emad1,Ivanov Stoyan1

Affiliation:

1. University of Architecture, Civil engineering and Geodesy, Sofia, Bulgaria

Abstract

<p>In the University of Architecture, Civil Engineering and Geodesy in Sofia a research project has started in 2018 aiming to investigate the possibilities of local production and application of high- strength concrete (or even UHPFRC) for strengthening existing structures in Bulgaria. Under this project laboratory tests of steel orthotropic bridge deck specimens as well as reinforced concrete beams, strengthened with high-strength concrete are performed. All elements are strengthened with an additional layer of high-strength concrete with thickness of 50mm on top.</p><p>The results obtained from the tests are summarized in this article. Comparative analysis showing the effect of this strengthening method is also presented. At the end summary and conclusions are drawn. Future steps for enhancing and promoting this strengthening technique in Bulgaria are outlined.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

Reference12 articles.

1. Toutlemonde F., Marchand P., Gomes F. and Dieng L., “Using UHPFRC as a topping layer for orthotropic bridge decks: Prototype Validation”, RILEM-fib-AFGC Int. Symposium on Ultra-High Performance Fibre-Reinforced Concrete, October 1-3, 2013, Marseille, France.

2. Boersma P. D. and Jong F. B. P. de, “Techniques and solutions for rehabilitation of orthotropic steel bridge decks in the Netherlands”, downloaded from http://www.ferroplan.com.

3. Traykova M., Georgiev L., Ivanov S. and Abdulahad E., Research in the application of UHPFRC for strengthening existing structures in Bulgaria, 20th IABSE Congress Proceedings, New York City, pp 2553-2559, September 4-6, 2019.

4. Traykov A, “Rehabilitation of the Complex Reinforced Concrete Shell Roof Structure of an Industrial Building,” in E. Pelke and E. Bruhwiler, Engineering history and heritage structures - Viewpoints and approaches, Structural Engineering Document 15, ISBN 978-3-85748-154-3, IABSE, Zurich, 2017, pp. 67-70.

5. Traykov, A. (2012) Rehabilitation & Repair of the Structural Elements of Industrial Buildings & Facilities, 14th International Conference and Exhibition “Structural Faults & Repair”, Edinburgh, Scotland.

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