Effects of fabric parameters on the tensile behaviour of sustainable cementitious composites |
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| Affiliation: | 1. Dipartimento Ingegneria Civile, Università della Calabria, Rende (CS) 87036, Italy;2. Facultad de Ingeniería, Universidad Nacional de Chimborazo, Riobamba 060150, Ecuador;1. Civil Engineering Department, COPPE, Universidade Federal do Rio de Janeiro, P.O. Box 68506, CEP 21941-972 Rio de Janeiro, RJ, Brazil;2. Department of Civil Engineering, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marques de São Vicente 225, 22451-900 Rio de Janeiro, RJ, Brazil;3. Centre for Mineral Technology (CETEM), Rio de Janeiro, RJ, Brazil;1. Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy;2. STRESS scarl, Sviluppo Tecnologie e Ricerca per l’Edilizia sismicamente Sicura ed ecoSostenibile, Vico II San Nicola alla, Dogana 9, 80133 Naples, Italy;3. Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples, Italy;1. University of Napoli Federico II, Via Claudio, 21, 80125, Napoli, Italy;2. University of Napoli ‘Parthenope’, Centro Direzionale is. C4, 80143, Napoli, Italy;1. Dipartimento Ingegneria Civile, Università della Calabria, Rende (CS) 87036, Italy;2. Facultad de Ingeniería, Universidad Nacional de Chimborazo, Riobamba 060150, Ecuador |
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| Abstract: | The mechanical behaviour of fabric-reinforced composites can be affected by several parameters, such as the properties of fabrics and matrix, the fibre content, the bond interphase and the anchorage ability of fabrics. In this study, the effects of the fibre type, the fabric geometry, the physical and mechanical properties of fabrics and the volume fraction of fibres on the tensile stress–strain response and crack propagation of cementitious composites reinforced with natural fabrics were studied. To further examine the properties of the fibres, mineral fibres (glass) were also used to study the tensile behaviour of glass fabric-reinforced composites and contrast the results with those obtained for the natural fabric-reinforced composites. Composite samples were manufactured by the hand lay-up moulding technique using one, two and three layers of flax and sisal fabric strips and a natural hydraulic lime (NHL) grouting mix. Considering fabric geometry and physical properties such as the mass per unit area and the linear density, the flax fabric provided better anchorage development than the sisal and glass fabrics in the cement-based composites. The fabric geometry and the volume fraction of fibres were the parameters that had the greatest effects on the tensile behaviour of these composite systems. |
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| Keywords: | A. Fabrics/textiles B. Mechanical properties D. Mechanical testing |
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