Cyclic load effects on the bond behavior of textile reinforced mortar (TRM) composites

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There has been considerable attention drawn to the application of textile reinforced mortar (TRM) composites for strengthening existing masonry and concrete structures. These composites are made from textile fibers embedded in an inorganic matrix and act as externally bonded reinforcement (EBR). Therefore, a careful observation must be made of the bond of the mortar to the substrate and the bond of the mortar to the textile. Despite numerous studies of the bond behavior of TRM composites conducted in recent years, no constitutive bond behavior law under cyclic loading has been determined. In most available studies, the most common method of testing TRM-to-substrate bonds is the single-lap shear test. Contrary to that, the bond performance of fibers to mortar has received little attention and has been the subject of this study. This paper describes a laboratory study investigating the textile's interfacial bond behavior to the mortar fiber under cyclic loading. It was shown that cycling can cause a loss in strength, which varies with the number of cycles.

Original languageEnglish
Title of host publicationMechanics of Masonry Structures Strengthened with Composite Materials IV - Selected peer-reviewed full text papers from the 7th International Conference on Mechanics of Masonry Structures Strengthened With Composite Materials, MuRiCo 7 2021
EditorsGiovanni Castellazzi, Cristina Gentilini, Angelo Di Tommaso
PublisherTrans Tech Publications Ltd
Pages74-81
Number of pages8
ISBN (Electronic)9783036410494
ISBN (Print)9783036400495
DOIs
Publication statusPublished - 7 Apr 2022
Event7th International Conference on Mechanics of Masonry Structures Strengthened With Composite Materials, MuRiCo 7 2021 - Virtual, Online
Duration: 24 Nov 202126 Nov 2021

Publication series

NameKey Engineering Materials
Volume916 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference7th International Conference on Mechanics of Masonry Structures Strengthened With Composite Materials, MuRiCo 7 2021
CityVirtual, Online
Period24/11/2126/11/21

Bibliographical note

Funding Information:
This work was partly financed by FEDER funds through the Competitively Factors Operational Program (COMPETE) and by national funds through the Foundation for Science and Technology (FCT) within the scope of the project POCI-01-0145-FEDER-007633. The first author has received grant from the Foundation for Science and Technology (FCT), with grant number: SFRH/BD/131282/2017. The second author acknowledges funding by Regione Lazio within the Research Project “RIPARA Integrated systems for the seismic protection of architectural heritage” (2021-2023), by the Italian Civil Protection Department within the Research Project “ReLUIS” (2019-2021) and by the Italian Ministry of Education, University and Research (MIUR), in the frame of the Departments of Excellence Initiative (2018-2022), attributed to the Department of Engineering of Roma Tre University.

Publisher Copyright:
© 2022 Trans Tech Publications Ltd, Switzerland.

Keywords

  • Alkali-resistant glass fabrics
  • Cyclic behavior
  • Pull-out test
  • Steel-reinforced grout (SRG)
  • Textile reinforced mortar (TRM)

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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