Fabric Reinforced Cementitious Matrix (FRCM) composites are a retrofitting technique used for strengthening concrete and masonry structures. The system is composed of a dry fabric (fibre grid) embedded in inorganic matrix. FRCM composites are particularly indicated in the reinforcement of historical masonry buildings due to various aspects: high compatibility with the substrates, reversibility, vapour permeability and durability to external agents. In this work the mechanical properties of two FRCM materials are studied. The first one is realised with a PBO fabric, the second with a fabric composed by PBO and glass rovings. These systems then are applied on medium-scale panels realised with clay solid bricks or light hollow bricks in order to investigate the relevant out-ofplane behaviour. The failure modes have displayed a collapse due to cracks development in the cementitious matrix and slippage of the fibre grid. Earthquake events can produce in many cases injuries correlated to the collapse of infill walls. In the literature just few researches on this topic are available and then the results of this experimental campaign can provide background data for future design recommendations.
Fabric Reinforced Cementitious Matrix (FRCM) Systems for Strengthening of Masonry Elements Subjected to Out-of-Plane Loads
CAROZZI, FRANCESCA GIULIA;COLOMBI, PIERLUIGI;POGGI, CARLO
2015-01-01
Abstract
Fabric Reinforced Cementitious Matrix (FRCM) composites are a retrofitting technique used for strengthening concrete and masonry structures. The system is composed of a dry fabric (fibre grid) embedded in inorganic matrix. FRCM composites are particularly indicated in the reinforcement of historical masonry buildings due to various aspects: high compatibility with the substrates, reversibility, vapour permeability and durability to external agents. In this work the mechanical properties of two FRCM materials are studied. The first one is realised with a PBO fabric, the second with a fabric composed by PBO and glass rovings. These systems then are applied on medium-scale panels realised with clay solid bricks or light hollow bricks in order to investigate the relevant out-ofplane behaviour. The failure modes have displayed a collapse due to cracks development in the cementitious matrix and slippage of the fibre grid. Earthquake events can produce in many cases injuries correlated to the collapse of infill walls. In the literature just few researches on this topic are available and then the results of this experimental campaign can provide background data for future design recommendations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
