Development of ultra-high-performance hybrid fiber-reinforced cement-based composites

Sukmin Kwon, Tomoya Nishiwaki, Takatsune Kikuta, Hirozo Mihashi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A new ultra-high-performance hybrid fiber-reinforced cementbased composite (UHP-HFRCC) was developed in this study. The UHP-HFRCC exhibited a tensile strength of 20.1 MPa (2.9 ksi), a strain capacity of 1.06%, and energy-absorption capacity of 153 kJ/m3 (1356 lb-ft/ft3). The multi-scale fiber-reinforcement system employed herein effectively improves the mechanical properties of the UHP-HFRCCs under tension. Determining the appropriate volume fraction of the longer fibers is crucial for enhancing a variety of mechanical properties, including the tensile strength, strain capacity, and energy-absorption capacity. Besides the significant improvement in the mechanical properties of UHP-HFRCC, the cost was reduced, and the workability of the material was improved by using relatively low-volume fractions of fibers (total volume fraction = 2.5 to 3%).

Original languageEnglish
Pages (from-to)309-318
Number of pages10
JournalACI Materials Journal
Volume111
Issue number3
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Energy-absorption capacity
  • Hybrid
  • Hybrid fiber-reinforced cement-based composite
  • Macrofiber
  • Microfiber
  • Tensile strength
  • Tensile-strain capacity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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