Textile-to-mortar bond behaviour in lime-based textile reinforced mortars: Fid-Bau Portal

Textile-to-mortar bond behaviour in lime-based textile reinforced mortars

Dalalbashi, Ali / Ghiassi, Bahman / Oliveira, Daniel V.

Highlights • Textile-to-mortar bond behaviour in lime-based textile reinforced mortars is experimentally and analytically investigated. • 160 pull-out tests are performed on two TRM composite types. • The role of test setup, loading rate, mortar age, fabric configuration and embedded length are discussed. • The results contribute to standardization of test methods and fundamental understanding of the bond behaviour in TRM composites. • The results contribute to development and design of TRM composites with enhanced properties.

Abstract Lime-based textile-reinforced mortars (TRM) have recently found a growing interest for repair and strengthening of masonry and historical structures. Despite extensive experimental and numerical investigations performed in the last years on the performance of these composites, there is still a lack of fundamental understanding of the fabric-to-mortar bond behaviour (as one of the main mechanisms affecting the cracking and nonlinear response of these composites) and the parameters affecting that. This paper, aimed at addressing this gap, presents a comprehensive experimental and analytical investigation on how the test setup, embedded length, load rate, mortar age and fabric configuration affect the bond behaviour in lime-based TRMs. In total 160 pull-out tests are performed on a glass-based and a steel-based TRM commonly used for strengthening of masonry structures. The results contribute to standardization of the test procedures for characterization of the fabric-to-mortar bond behaviour, to fundamental understanding of this mechanism and to optimization of the design of these composites for enhancing their mechanical response.