Braided reinforced composite rods for the internal reinforcement of concrete |
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Authors: | C Gonilho Pereira R Fangueiro S Jalali M Araujo P Marques |
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Institution: | (1) Barreiro College of Technology, Setubal Polytechnics, Setubal, Portugal;(2) Department of Civil Engineering, University of Minho, Braga, Portugal;(3) Department of Textile Engineering, University of Minho, Braga, Portugal |
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Abstract: | This paper reports on the development of braided reinforced composite rods as a substitute for the steel reinforcement in
concrete. The research work aims at understanding the mechanical behaviour of core-reinforced braided fabrics and braided
reinforced composite rods, namely concerning the influence of the braiding angle, the type of core reinforcement fibre, and
preloading and postloading conditions. The core-reinforced braided fabrics were made from polyester fibres for producing braided
structures, and E-glass, carbon, HT polyethylene, and sisal fibres were used for the core reinforcement. The braided reinforced
composite rods were obtained by impregnating the core-reinforced braided fabric with a vinyl ester resin. The preloading of
the core-reinforced braided fabrics and the postloading of the braided reinforced composite rods were performed in three and
two stages, respectively. The results of tensile tests carried out on different samples of core-reinforced braided fabrics
are presented and discussed. The tensile and bending properties of the braided reinforced composite rods have been evaluated,
and the results obtained are presented, discussed, and compared with those of conventional materials, such as steel.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 44, No. 4, pp. 327–338, May–June, 2008. |
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Keywords: | concrete fibre-reinforced composite material core-reinforced braided fabric braided reinforced composite rod |
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