Fiber Reinforced Cementitious Matrix (FRCM) composite materials have been recently introduced in civil engineer-ing applications for the strenthening of masonry and reinforced concrete elements. The aim of the presented experimental study is to evaluate the bond behavior of carbon and glass FRCM composite materials, in the form of bidirectional grids or unidirectional sheets, applied on different substrates by using a cementitious mortar together with an adhesion promoter. Experimental outcomes obtained on masonry using a cementitious mortar have also been compared with the results coming from the same strengthening sys-tems applied with lime mortar. All specimens were subjected to single-lap shear tests until failure, in order to evaluate failure modes, maximum bond capacity and the whole samples behavior in terms of displacement and strain maps (thanks to Digital Image Correla-tion technique). Experimental outcomes highlighted the good performance of the strengthening systems tested when applied in com-bination with the adhesion promoter.
I materiali compositi FRCM (“Fiber Reinforced Cementitious Matrix”) sono stati recente-mente introdotti nelle applicazioni di ingegneria civile per il rinforzo di elementi in muratura e c.a. Lo scopo dello studio sperimentale è quello di valutare il comportamento, in termini di aderenza, di materiali compositi FRCM in carbonio e vetro, nella forma di reti bidirezionali o tessuti unidirezionali, applicati su diversi supporti utilizzando una malta cementizia e un promotore di adesione. Le evidenze sperimentali ottenute sulla muratura utilizzando malta a base cementizia sono state confrontate con i risultati derivanti dagli stessi sistemi di rinforzo applicati con malta a base calce. Tutti i campioni sono stati sottoposti a prove di aderenza, in modo da valutare le possibili modalità di crisi, la capacità massima e il comportamento globale in termini di spostamenti e deformazioni (grazie alla tecnica della Digital Image Correlation). I risultati sperimentali hanno evidenziato le buone prestazioni dei sistemi di rinforzo testati se applicati in combinazione con il promotore di adesione.
Alessandro Bellini, Claudio Mazzotti (2020). Bond behavior of FRCM composites applied on concrete and masonry. Cham : Springer Nature [10.1007/978-3-030-23748-6_27].
Bond behavior of FRCM composites applied on concrete and masonry
Alessandro Bellini
;Claudio Mazzotti
2020
Abstract
Fiber Reinforced Cementitious Matrix (FRCM) composite materials have been recently introduced in civil engineer-ing applications for the strenthening of masonry and reinforced concrete elements. The aim of the presented experimental study is to evaluate the bond behavior of carbon and glass FRCM composite materials, in the form of bidirectional grids or unidirectional sheets, applied on different substrates by using a cementitious mortar together with an adhesion promoter. Experimental outcomes obtained on masonry using a cementitious mortar have also been compared with the results coming from the same strengthening sys-tems applied with lime mortar. All specimens were subjected to single-lap shear tests until failure, in order to evaluate failure modes, maximum bond capacity and the whole samples behavior in terms of displacement and strain maps (thanks to Digital Image Correla-tion technique). Experimental outcomes highlighted the good performance of the strengthening systems tested when applied in com-bination with the adhesion promoter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
