The authors would like to thanks the Fundación Iñaki Goenaga for its scholarship programme and the financial support of the regional Diputación Foral de Bizkaia (Birgaitek, DFB-7/12/TK/2009/10).publishersversionpublishe

Chastre, Carlos

García, David

Garmendia, Leire

Larrinaga, Pello

San-José, José T.

English

Repositório da Universidade Nova de Lisboa

16th International Conference on Composite Structures ICCS 16 A. J. M. Ferreira (Editor) © FEUP, Porto, 2011 GLOBAL STUDY OF THE BEHAVIOUR OF TEXTILE REINFORCED MORTAR UNDER TENSILE STRESS Pello Larrinaga*, José T. San-José† * , David García* , Leire Garmendia* and Carlos Chastre+ * Tecnalia C/Geldo, Edificio 700, 48160, Derio, Spain e-mail: pello.larrinaga@tecnalia.com, web page: http://www.tecnalia.com  † Faculty of Engineering of Bilbao (UPV-EHU) Alameda Urquijo s/n, 48013, Bilbao, Spain e-mail: tomas.sanjose@tecnalia.com, web page: http://www.ehu.es  + Faculdade de Ciências e Tecnologia Universidad Nova de Lisboa 2829-516, Caparica, Portugal e-mail: cmcr@fct.unl.pt, web page: http://www.fct.unl.pt/  Key words: Composite material, mortar, strengthening, tensile behaviour, textile. Abstract.  In recent years Textile Reinforced Mortar (TRM) has focused the efforts of several research institutions. This material has proven to be an effective strengthening technology for masonry and reinforced concrete structural elements [1]. TRM is presented as an evolution of the well-known Fibre Reinforced Polymer (FRP). During the last decade, FRP has gained an important position in the strengthening business, becoming the most favourite strengthening material for several designers due to its effectiveness, durability and easiness to install. Nevertheless, FRP presents some drawbacks that advise against its use in certain situations, a space which could be filled with TRM, a more economic material. By the use of textile fabrics as reinforcement core and mortar as matrix, the application range covers from retrofitting erected structures to the production of new building members.  The fascinating possibilities of TRM, also named Textile Reinforced Concrete (TRC), have motivated varied studies about this technology, from macro to micro scale. The loading-bearing behaviour of TRM material is influenced basically by material mechanical properties and amount and alignment of the textile reinforcement [2]. However, other features, apparently less important, have a direct effect which must not be neglected. This paper studies globally some parameters that affect the pure tensile behaviour of TRM composites. For this purpose commercial textiles and mortars have been used in the campaign. Hence, several tensile specimens (600x100x10mm) were tested within this project. Number of textile layers, thickness of the matrix, cell size, coated or uncoated rovings are some of the studied parameters in an experimental campaign which includes the use of 4 different First A. Author, Second B. Author and Third C. Coauthor.  2strengthening materials: glass, carbon, basalt and steel hardwire. Besides, the dynamic response of TRM under tensile loads was also tested in this paper. The experimental results were compared with analytic approximations present in the bibliography and, therefore, a numerical model was carried out looking for a possible use in future works.   Fig 1. Pure tensile test setup.  Finally, the effectiveness of Textile Reinforced Mortar as strengthening material is checked in two different structural members: stone arches and reinforced concrete beams under flexure loads. The results present TRM as promising retrofitting solution and show the possibility of further studies and researches.     The authors would like to thanks the Fundación Iñaki Goenaga for its scholarship programme and the financial support of the regional Diputación Foral de Bizkaia (Birgaitek, DFB-7/12/TK/2009/10). REFERENCES [1] T.C Triantafillou and C. Papanicolau, Shear strengthening of Reinforced Concrete members with Textile Reinforced Mortar (TRM) Jackets, Materials and structures 39:93-103 (2006). [2] A. Peled and A. Bentur, Fabric structure and its reinforcing efficiency in Textile Reinforced Cement composites, Composites: Part A34 (2003) 107-108 (2002)    

Global study of the behaviour of textile reinforced mortar under tensile stress

New University of Lisbon's Repository

16th International Conference on Composite Structures 
ICCS 16 
A. J. M. Ferreira (Editor) 
© FEUP, Porto, 2011 
GLOBAL STUDY OF THE BEHAVIOUR OF TEXTILE REINFORCED 
MORTAR UNDER TENSILE STRESS 
Pello Larrinaga*, José T. San-José† * , David García* , Leire Garmendia* and Carlos 
Chastre+ 
* Tecnalia 
C/Geldo, Edificio 700, 48160, Derio, Spain 
e-mail: pello.larrinaga@tecnalia.com, web page: http://www.tecnalia.com 
 
† Faculty of Engineering of Bilbao (UPV-EHU) 
Alameda Urquijo s/n, 48013, Bilbao, Spain 
e-mail: tomas.sanjose@tecnalia.com, web page: http://www.ehu.es 
 
+ Faculdade de Ciências e Tecnologia 
Universidad Nova de Lisboa 
2829-516, Caparica, Portugal 
e-mail: cmcr@fct.unl.pt, web page: http://www.fct.unl.pt/ 
 
Key words: Composite material, mortar, strengthening, tensile behaviour, textile. 
Abstract.  In recent years Textile Reinforced Mortar (TRM) has focused the efforts of several 
research institutions. This material has proven to be an effective strengthening technology for 
masonry and reinforced concrete structural elements [1]. TRM is presented as an evolution of 
the well-known Fibre Reinforced Polymer (FRP). During the last decade, FRP has gained an 
important position in the strengthening business, becoming the most favourite strengthening 
material for several designers due to its effectiveness, durability and easiness to install. 
Nevertheless, FRP presents some drawbacks that advise against its use in certain situations, a 
space which could be filled with TRM, a more economic material. By the use of textile fabrics 
as reinforcement core and mortar as matrix, the application range covers from retrofitting 
erected structures to the production of new building members. 
 The fascinating possibilities of TRM, also named Textile Reinforced Concrete (TRC), have 
motivated varied studies about this technology, from macro to micro scale. The loading-
bearing behaviour of TRM material is influenced basically by material mechanical properties 
and amount and alignment of the textile reinforcement [2]. However, other features, 
apparently less important, have a direct effect which must not be neglected. This paper 
studies globally some parameters that affect the pure tensile behaviour of TRM composites. 
For this purpose commercial textiles and mortars have been used in the campaign. 
Hence, several tensile specimens (600x100x10mm) were tested within this project. Number of 
textile layers, thickness of the matrix, cell size, coated or uncoated rovings are some of the 
studied parameters in an experimental campaign which includes the use of 4 different 
First A. Author, Second B. Author and Third C. Coauthor. 
 2
strengthening materials: glass, carbon, basalt and steel hardwire. Besides, the dynamic 
response of TRM under tensile loads was also tested in this paper. The experimental results 
were compared with analytic approximations present in the bibliography and, therefore, a 
numerical model was carried out looking for a possible use in future works. 
 
 
Fig 1. Pure tensile test setup. 
 
Finally, the effectiveness of Textile Reinforced Mortar as strengthening material is checked in 
two different structural members: stone arches and reinforced concrete beams under flexure 
loads. The results present TRM as promising retrofitting solution and show the possibility of 
further studies and researches.     
The authors would like to thanks the Fundación Iñaki Goenaga for its scholarship 
programme and the financial support of the regional Diputación Foral de Bizkaia (Birgaitek, 
DFB-7/12/TK/2009/10). 
REFERENCES 
[1] T.C Triantafillou and C. Papanicolau, Shear strengthening of Reinforced Concrete 
members with Textile Reinforced Mortar (TRM) Jackets, Materials and structures 39:93-
103 (2006). 
[2] A. Peled and A. Bentur, Fabric structure and its reinforcing efficiency in Textile 
Reinforced Cement composites, Composites: Part A34 (2003) 107-108 (2002) 
 
 
 


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Global study of the behaviour of textile reinforced mortar under tensile stress

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