Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Lampropoulos, Andreas, Paschalis, Spyridon, Tsioulou, Ourania and Dritsos, Stephanos (2016) Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC). Engineering Structures, 106. pp. 370-384. ISSN 0141-0296

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Abstract

In this study the efficiency of the use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) for the strengthening of existing Reinforced Concrete (RC) beams has been investigated. Experimental work has been conducted to determine UHPFRC material properties. Dog-bone shaped specimens have been tested under direct tensile loading, and standard cubes have been tested in compression. These results have been used for the development of a numerical model using Finite Element Method. The reliability of the numerical model has been validated using further experimental results of UHPFRC layers tested under flexural loading. Further numerical study has been conducted on full-scale beams strengthened with UHPFRC layers and jackets, and these results were compared to respective results of beams strengthened with conventional RC layers and with combination of UHPFRC and steel reinforcing bars. Superior performance was observed for strengthened beams with UHPFRC three side jackets, and the efficiency of this technique was highlighted by comparisons with other strengthening techniques.

Item Type: Article
Uncontrolled Keywords: Ultra high performance fibre reinforced concrete, Reinforced concrete beams, Strengthening, Layers, Jackets
Subjects: Construction and engineering
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Depositing User: Spyridon Paschalis
Date Deposited: 18 Aug 2021 12:33
Last Modified: 15 Sep 2021 15:32
URI: http://repository.uwl.ac.uk/id/eprint/8176

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