Evaluation of the performance of recycled textile fibres in the mechanical behaviour of a gypsum and cork composite material |
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| Affiliation: | 1. ISISE, Department of Civil Engineering, University of Minho, Azurém, P-4800-058 Guimarães, Portugal;2. C-TAC, Department of Civil Engineering, University of Minho, Azurém, P-4800-058 Guimarães, Portugal;1. Departamento de Construcciones Arquitectónicas y su Control, Escuela Técnica Superior de Edificación, Universidad Politécnica de Madrid, Avda. Juan de Herrera 6, 28040 Madrid, Spain;2. Departamento de Tecnología de la Edificación, Escuela Técnica Superior de Edificación, Universidad Politécnica de Madrid, Avda. Juan de Herrera 6, 28040 Madrid, Spain;1. Polytechnic School of Tomar, Campus Tomar, Estrada da Serra Quinta do Contador, 2300-313 Tomar, Portugal;2. Department of Civil Engineering, University of Coimbra, Pólo II, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;1. GEMH-ENSCI, 12 rue Atlantis, 87068 Limoges Cedex, France;2. Université de Toulon, MAPIEM, EA 4323, 83957 La Garde, France;3. Université de Toulon, IM2NP, UMR 6242, 83957 La Garde, France;1. LEME, Université Mohamed V-Agdal, EST Salé, 227 Avenue Prince Héritier, Salé, Morocco;2. LEMTA, Nancy-Université, CNRS, 2 Avenue de la forêt de Haye, BP160, 54504 Vandoeuvre Cedex, France;3. Université Lyon 1 – Claude Bernard, I.N.S.A., 20 Avenue Albert Einstein, 69621 Villeurbanne Cedex, France |
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| Abstract: | Given the need for using more sustainable constructive solutions, an innovative composite material based on a combination of distinct industrial by-products is proposed aiming to reduce waste and energy consumption in the production of construction materials. The raw materials are thermal activated flue-gas desulphurization (FGD) gypsum, which acts as a binder, granulated cork as the aggregate and recycled textile fibres from used tyres intended to reinforce the material.This paper presents the results of the design of the composite mortar mixes, the characterization of the key physical properties (density, porosity and ultrasonic pulse velocity) and the mechanical validation based on uniaxial compressive tests and fracture energy tests. In the experimental campaign, the influence of the percentage of the raw materials in terms of gypsum mass, on the mechanical properties of the composite material was assessed.It was observed that the percentage of granulated cork decreases the compressive strength of the composite material but contributes to the increase in the compressive fracture energy. Besides, the recycled textile fibres play an important role in the mode I fracture process and in the fracture energy of the composite material, resulting in a considerable increase in the mode I fracture energy. |
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| Keywords: | Industrial by-products Textile fibres Composite material Mechanical characterization Uniaxial compression Mode I fracture energy |
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