This paper presents an experimental investigation into the uniaxial tensile behaviour of hybrid textile-reinforced concrete (h/FRCM). The study focuses on the synergy between an Alkali-Resistant (AR) glass fabric and four different High Performance Fibre-Reinforced Concrete (HPFRC) matrices, varying by supplier and rheology. An experimental program was conducted, including uniaxial tensile tests on hybrid composites, HPFRC and Textile-Reinforced Concrete (TRC) without steel fibres (SF) to isolate the contribution of each component. The results consistently showed that fabric inclusion transformed the quasi-brittle, strain-softening failure of HPFRC into a quasi-ductile, strain-hardening response with multiple cracking and significant deformation capacity. A synergistic effect between SF and the fabric was observed in the hybrid systems, leading to higher tensile capacity. A clear correlation between the matrix's post-cracking flexural performance and the composite's efficiency was established, highlighting that matrix properties are a key factor for material selection in structural retrofitting.

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Mechanical Behaviour of Hybrid Textile Reinforced Concrete

  • Matteo Colombo,
  • Tuluhan Ergin,
  • Marco Carlo Rampini,
  • Marco di Prisco

摘要

This paper presents an experimental investigation into the uniaxial tensile behaviour of hybrid textile-reinforced concrete (h/FRCM). The study focuses on the synergy between an Alkali-Resistant (AR) glass fabric and four different High Performance Fibre-Reinforced Concrete (HPFRC) matrices, varying by supplier and rheology. An experimental program was conducted, including uniaxial tensile tests on hybrid composites, HPFRC and Textile-Reinforced Concrete (TRC) without steel fibres (SF) to isolate the contribution of each component. The results consistently showed that fabric inclusion transformed the quasi-brittle, strain-softening failure of HPFRC into a quasi-ductile, strain-hardening response with multiple cracking and significant deformation capacity. A synergistic effect between SF and the fabric was observed in the hybrid systems, leading to higher tensile capacity. A clear correlation between the matrix's post-cracking flexural performance and the composite's efficiency was established, highlighting that matrix properties are a key factor for material selection in structural retrofitting.