Utility of polyvinyl alcohol fiber-based needle punched nonwoven fabric as potential reinforcement in cementitious composites

Pekmezci B., KAYAOGLU B., Pourdeyhimi B., KARADENIZ A. C.

JOURNAL OF COMPOSITE MATERIALS, cilt.48, sa.25, ss.3129-3140, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 25
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1177/0021998313507614
  • Dergi Adı: JOURNAL OF COMPOSITE MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3129-3140
  • Anahtar Kelimeler: Needle punched nonwoven, polyvinyl alcohol fiber, reinforcement, cementitious composite, specific fracture energy, flexural behavior, PERFORMANCE, EFFICIENCY, CONCRETE
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

This study reports on the use of polyvinyl alcohol-based needle punched nonwoven fabrics in cement-based composites as a low-cost reinforcement. In this study, a nonwoven reinforcement using crimped polyvinyl alcohol fibers for cement-based composites was developed. The incorporation of nonwoven fabric in composites improved tensile and flexural properties compared to a discrete polyvinyl alcohol fiber-reinforced composite. Formation of multiple fine cracks, crimped fibers and mechanical interlocking of fibers in the nonwoven fabric structure resulted in superior mechanical performance. The failure mode was due to a single macro-crack for the discrete fiber reinforced composite as opposed to a number of fine cracks for the nonwoven reinforced composite.