Slip rate effects and cyclic behaviour of textile-to-matrix bond in textile reinforced mortar composites

Ali Dalalbashi, Stefano De Santis, Bahman Ghiassi, Daniel V. Oliveira

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Abstract

The structural effectiveness of textile reinforced mortar (TRM) composites relies on their load transfer capacity to the substrate and the interaction between textile and mortar. The bond plays a crucial role in mechanism of TRM composites. Despite some recent investigations, a deep understanding still needs to be gained on the textile-to-mortar bond to develop suitable analytical and numerical predictive models, improve test methods, and orient design criteria. This work describes a laboratory study in which pull-out tests were carried out to investigate the effect of the slip rate and cyclic loading on the textile-to-mortar bond behaviour. Alkali-resistant glass fabric and sgalvanised ultra-high tensile strength steel cords embedded in two different lime-based mortars were tested. The pull-out response was sensitive to the strain rate at low rates. Cyclic loading produced a strength degradation, which reduced with the number of cycles.
Original languageEnglish
Article number108
Number of pages21
JournalMaterials and Structures
Volume54
Issue number3
Early online date30 Apr 2021
DOIs
Publication statusPublished - Jun 2021

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