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Round Robin Test on tensile and bond behaviour of Steel Reinforced Grout systems

De Santis, Stefano; Ceroni, Francesca; de Felice, Gianmarco; Fagone, Mario; Ghiassi, Bahman; Kwiecie?, Arkadiusz; Lignola, Gian Piero; Morganti, Mattia; Santandrea, Mattia; Valluzzi, Maria Rosa; Viskovic, Alberto

Authors

Stefano De Santis

Francesca Ceroni

Gianmarco de Felice

Mario Fagone

Bahman Ghiassi

Arkadiusz Kwiecie?

Gian Piero Lignola

Mattia Morganti

Mattia Santandrea

Maria Rosa Valluzzi

Alberto Viskovic



Abstract

Mortar-based reinforcements are an innovative solution for retrofitting existing structures that combine effectiveness, compatibility, and sustainability. Despite the recent spreading of field applications, there is still insufficient knowledge on their fundamental mechanical properties, and a regulatory gap for experimental procedures and design criteria. A Round Robin Test initiative was organized by the Rilem TC 250-CSM (Composites for the Sustainable strengthening of Masonry) to investigate the tensile and bond behaviour of mortar-based composites with basalt, carbon, glass, polyparaphenylene benzobisoxazole (PBO), aramid and steel textiles. This paper presents the tests carried out on Steel Reinforced Grout (SRG) systems, comprising three textile and four mortar types, supplied by three producers. Ten laboratories from Italy, Poland and Portugal were involved for a total of 150 tests, including direct tensile tests on textiles and composites, and single-lap bond tests on masonry substrate. The influence of the layout of the textile, the mechanical properties of the mortar matrix, the manufacturing and curing conditions, as well as the testing setup and instrumentation, is discussed to contribute to the optimization of the reinforcement systems and to the development of recommendations for laboratory testing. Finally, results are combined to derive engineering parameters for qualification and design purposes.

Citation

De Santis, S., Ceroni, F., de Felice, G., Fagone, M., Ghiassi, B., KwiecieĊ„, A., …Viskovic, A. (2017). Round Robin Test on tensile and bond behaviour of Steel Reinforced Grout systems. Composites Part B: Engineering, 127, 100-120. https://doi.org/10.1016/j.compositesb.2017.03.052

Journal Article Type Article
Acceptance Date Mar 19, 2017
Online Publication Date Mar 27, 2017
Publication Date Oct 15, 2017
Deposit Date Nov 27, 2018
Journal Composites Part B: Engineering
Print ISSN 1359-8368
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 127
Pages 100-120
DOI https://doi.org/10.1016/j.compositesb.2017.03.052
Keywords Adhesion; Strength; Mechanical testing; Fabric reinforced cementitious matrix (FRCM)
Public URL https://nottingham-repository.worktribe.com/output/1309006