Background: Lack of interphase compatibility between the fabric and the matrix significantly impairs the load-bearing capacity of textile reinforced mortar (TRM). In this study, we consider the application of two inorganic surface coatings for enhancing the interphase bond properties. Methods: Either of two silica-based coatings, namely nano- and micro-silica, were applied to alkali-resistant glass (ARG) and to hybrid carbon–ARG woven fabric. Mechanical performance of TRM reinforced with the uncoated and the coated fabric was compared in uniaxial tensile tests. Results: Mechanical testing provides evidence of a remarkable enhancement in terms of ultimate strength and deformability for the coated specimens. This effect can be ascribed to the improved hydrophilicity of the fibers’ surface and to the activation of pozzolanic reaction at the interphase. In addition, penetration of nano- and microparticles in the bundle of the textile yarns reduces the occurrence of telescopic failure.

Lime-cement textile reinforced mortar (TRM) with modified interphase / Signorini, Cesare; Sola, Antonella; Nobili, Andrea; Siligardi, Cristina. - In: JOURNAL OF APPLIED BIOMATERIALS & FUNCTIONAL MATERIALS. - ISSN 2280-8000. - 17:1(2019), pp. 1-9. [10.1177/2280800019827823]

Lime-cement textile reinforced mortar (TRM) with modified interphase

Cesare Signorini
;
Antonella Sola
Membro del Collaboration Group
;
Andrea Nobili
Project Administration
;
Cristina Siligardi
Membro del Collaboration Group
2019

Abstract

Background: Lack of interphase compatibility between the fabric and the matrix significantly impairs the load-bearing capacity of textile reinforced mortar (TRM). In this study, we consider the application of two inorganic surface coatings for enhancing the interphase bond properties. Methods: Either of two silica-based coatings, namely nano- and micro-silica, were applied to alkali-resistant glass (ARG) and to hybrid carbon–ARG woven fabric. Mechanical performance of TRM reinforced with the uncoated and the coated fabric was compared in uniaxial tensile tests. Results: Mechanical testing provides evidence of a remarkable enhancement in terms of ultimate strength and deformability for the coated specimens. This effect can be ascribed to the improved hydrophilicity of the fibers’ surface and to the activation of pozzolanic reaction at the interphase. In addition, penetration of nano- and microparticles in the bundle of the textile yarns reduces the occurrence of telescopic failure.
1-mar-2019
17
1
1
9
Lime-cement textile reinforced mortar (TRM) with modified interphase / Signorini, Cesare; Sola, Antonella; Nobili, Andrea; Siligardi, Cristina. - In: JOURNAL OF APPLIED BIOMATERIALS & FUNCTIONAL MATERIALS. - ISSN 2280-8000. - 17:1(2019), pp. 1-9. [10.1177/2280800019827823]
Signorini, Cesare; Sola, Antonella; Nobili, Andrea; Siligardi, Cristina
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1175144
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