A qualification method for externally bonded Fibre Reinforced Cementitious Matrix (FRCM) strengthening systems |
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| Affiliation: | 1. University of Salerno, Department of Civil Engineering, Via Ponte Don Melillo, 84084 Fisciano, SA, Italy;2. Roma Tre University, Department of Engineering, Via Vito Volterra 62, 00146 Rome, Italy;1. University of Padova, via Marzolo 9, Padova 35131, Italy;2. University of Hartford, 200 Bloomfield Avenue, West Hartford, CT 06117, USA;3. Missouri S&T, 1401 North Pine Street, Rolla, MO 65409, USA;1. Department of Sustainability Engineering, University Guglielmo Marconi, Via Plinio 44, 00193, Roma, Italy;2. Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via G. Di Biasio 43, 03043, Cassino, FR, Italy;3. Department of Structures in Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125, Naples, Italy;1. University of Napoli Federico II, via Claudio, 21, 80125 Napoli, Italy;2. University of Napoli ‘Parthenope’, Centro Direzionale is. C4, 80143 Napoli, Italy;3. University of Sannio, Piazza Roma, 21, 82100 Benevento, Italy |
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| Abstract: | Fibre Reinforced Cementitious Matrix (FRCM) composites are now widely used for repair and retrofitting existing structures. Guidelines for product qualification are needed to characterize the strengthening systems before they are made available in the market and installed. The paper proposes a procedure that combines the results of direct tensile and shear bond tests to provide engineering design parameters for externally bonded FRCM reinforcements. Due to the possible occurrence of different failure modes, the procedure provides results on the base of the weakest mechanism that takes place. Thanks to its simplicity, the proposed method is suitable for standard product qualification and material assurance purposes. In order to investigate its feasibility, the qualification procedure is applied to different reinforcements comprising basalt, carbon, glass, and steel textiles, bonded with either cement or lime mortars to clay bricks and tuff units. |
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| Keywords: | A. Fabrics/textiles B. Debonding D. Mechanical testing Fibre Reinforced Cementitious Matrix (FRCM) |
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