Experimental Study on the Fiber-Matrix Interface Behavior of FRCM/CRM Reinforcement Systems

Abstract:

Masonry existing buildings are subjected to significant structural damages when seismic events occur. Over the last decades, innovative techniques like composite materials based on inorganic mortar (FRCM – Fiber Reinforced Cementitious Matrices) have emerged as attractive solutions for the strengthening of civil structures. FRCM shows better compatibility with masonry substrates with respect to Fiber Reinforced Polymers. The effectiveness of FRCM reinforcement systems relies on the composite-substrate bond behavior which is affected by many parameters, leading to different failure mechanisms. Although numerous studies investigate the FRCM-substrate bond, few attentions have been paid to the study of fiber grid-matrix interface behavior. In this study, the preliminary results of a wider experimental campaign aimed at investigating the interface behavior between fiber and mortar accounting for the contribution of transversal grid wires are presented. Different typologies of fiber and mortar were tested and the results are compared and discussed.

• Periodical: Key Engineering Materials (Volume 916)
• Pages: 409-416
• DOI: https://doi.org/10.4028/p-0484vd
• Online since: April 2022
• Authors: Ottavio Tamborrino*, Daniele Perrone, Marianovella Leone, Maria Antonietta Aiello
• Keywords: Bond, FRCM, Interface, Masonry, Retrofitting, Slippage

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