Beam tests for the determination of the interfacial properties of FRCM composites

Fiber Reinforced Cementitious Matrix (FRCM) materials are widely used for strengthening reinforced concrete (RC) structures. Experimental studies show that the collapse of RC elements reinforced with FRCM composites occurs due to the loss of bond of the reinforcing material. For this reason the issu...

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Main Authors: Maria Teresa Cristofaro, Angelo D’Ambrisi, Francesco Focacci, Marco Tanganelli, Mario De Stefano
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Case Studies in Construction Materials
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214509522006179
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author Maria Teresa Cristofaro
Angelo D’Ambrisi
Francesco Focacci
Marco Tanganelli
Mario De Stefano
author_facet Maria Teresa Cristofaro
Angelo D’Ambrisi
Francesco Focacci
Marco Tanganelli
Mario De Stefano
author_sort Maria Teresa Cristofaro
collection DOAJ
description Fiber Reinforced Cementitious Matrix (FRCM) materials are widely used for strengthening reinforced concrete (RC) structures. Experimental studies show that the collapse of RC elements reinforced with FRCM composites occurs due to the loss of bond of the reinforcing material. For this reason the issue of the shear stress transfer between reinforcement and concrete substrate has been extensively studied in the last years. The single-lap shear test is the most frequently adopted test configuration. In this paper the results of bond tests between a FRCM composite and concrete performed in the beam test configuration are presented. The results are used to determine the cohesive material law (CML) of the tested composite and the obtained CML is compared with that obtained on the basis of the results of single-lap shear tests. The comparison shows that the two test configurations provide similar CML.
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spelling doaj.art-f3d0ff820bd84e94bd98e80667bf596e2022-12-22T04:25:55ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01485Beam tests for the determination of the interfacial properties of FRCM compositesMaria Teresa Cristofaro0Angelo D’Ambrisi1Francesco Focacci2Marco Tanganelli3Mario De Stefano4Dipartimento di Architettura, Università di Firenze, piazza Brunelleschi 6, 50121 Firenze, Italy; Corresponding author.Dipartimento di Architettura, Università di Firenze, piazza Brunelleschi 6, 50121 Firenze, ItalyUniversità eCampus, via Isimbardi 10, 22060 Novedrate, CO, ItalyDipartimento di Architettura, Università di Firenze, piazza Brunelleschi 6, 50121 Firenze, ItalyDipartimento di Architettura, Università di Firenze, piazza Brunelleschi 6, 50121 Firenze, ItalyFiber Reinforced Cementitious Matrix (FRCM) materials are widely used for strengthening reinforced concrete (RC) structures. Experimental studies show that the collapse of RC elements reinforced with FRCM composites occurs due to the loss of bond of the reinforcing material. For this reason the issue of the shear stress transfer between reinforcement and concrete substrate has been extensively studied in the last years. The single-lap shear test is the most frequently adopted test configuration. In this paper the results of bond tests between a FRCM composite and concrete performed in the beam test configuration are presented. The results are used to determine the cohesive material law (CML) of the tested composite and the obtained CML is compared with that obtained on the basis of the results of single-lap shear tests. The comparison shows that the two test configurations provide similar CML.http://www.sciencedirect.com/science/article/pii/S2214509522006179FRCM compositesRC structuresExperimental campaignBeam testCohesive material law
spellingShingle Maria Teresa Cristofaro
Angelo D’Ambrisi
Francesco Focacci
Marco Tanganelli
Mario De Stefano
Beam tests for the determination of the interfacial properties of FRCM composites
Case Studies in Construction Materials
FRCM composites
RC structures
Experimental campaign
Beam test
Cohesive material law
title Beam tests for the determination of the interfacial properties of FRCM composites
title_full Beam tests for the determination of the interfacial properties of FRCM composites
title_fullStr Beam tests for the determination of the interfacial properties of FRCM composites
title_full_unstemmed Beam tests for the determination of the interfacial properties of FRCM composites
title_short Beam tests for the determination of the interfacial properties of FRCM composites
title_sort beam tests for the determination of the interfacial properties of frcm composites
topic FRCM composites
RC structures
Experimental campaign
Beam test
Cohesive material law
url http://www.sciencedirect.com/science/article/pii/S2214509522006179
work_keys_str_mv AT mariateresacristofaro beamtestsforthedeterminationoftheinterfacialpropertiesoffrcmcomposites
AT angelodambrisi beamtestsforthedeterminationoftheinterfacialpropertiesoffrcmcomposites
AT francescofocacci beamtestsforthedeterminationoftheinterfacialpropertiesoffrcmcomposites
AT marcotanganelli beamtestsforthedeterminationoftheinterfacialpropertiesoffrcmcomposites
AT mariodestefano beamtestsforthedeterminationoftheinterfacialpropertiesoffrcmcomposites