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, vol.48, no.25, pp.3129-3140, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 25
  • Publication Date: 2014
  • Doi Number: 10.1177/0021998313507614
  • Journal Name: JOURNAL OF COMPOSITE MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3129-3140
  • Keywords: Needle punched nonwoven, polyvinyl alcohol fiber, reinforcement, cementitious composite, specific fracture energy, flexural behavior, PERFORMANCE, EFFICIENCY, CONCRETE
  • Istanbul Technical University Affiliated: Yes

Abstract

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.