Experimental investigation of the failure under fatigue of textile reinforced cement (TRC) retrofit on masonry substrate. A compatibility study

Onderzoeksoutput: Conference paper

Samenvatting

This paper studies the bonding failure under fatigue of different masonry system retrofitted by textile reinforced mortar. A series of masonry prisms are casted with red-clay bulk bricks and tested following RILEM TC 250-CSM recommendations, in a setup adjusted for cyclic (2Hz, R-0.1) testing. Several different combinations of materials for the retrofit design are evaluated: glass or carbon fibres, cement-base, lime-based and lime/cement-based mortars. To have a better understanding of the damage mechanisms and analyse the materials compatibility during testing, Acoustic Emissions (AE) and Digital Image Correlation (DIC) are incorporated into the testing procedure. Various failure modes arise when testing prisms retrofitted with different materials composition, dominantly controlled by the textile stiffness. Results show that a better compatibility between substrate and TRM and a greater fatigue life is reached when the retrofit components have relatively equivalent strength and fracture resistance to the masonry. AE proves most helpful to pinpoint the exact damage onsets but lacks accuracy to monitor damage through time due to the noise produced by the dynamic testing. DIC on the other hand, lacks precision because it needs a constant frequency for picture taking, but it performs positively at tracking the damage propagation through time.
Originele taal-2English
Titel20th International Conference on Experimental Mechanics
UitgeverijEuraSEM
Pagina's663-672
Aantal pagina's10
StatusPublished - 2023
Evenement20th International Conference on Experimental Mechanics - Porto, Porto, Portugal
Duur: 2 jul 20237 jul 2023

Conference

Conference20th International Conference on Experimental Mechanics
Verkorte titelICEM20
Land/RegioPortugal
StadPorto
Periode2/07/237/07/23

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