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

Sukmin Kwon; Tomoya Nishiwaki; Takatsune Kikuta; Hirozo Mihashi

doi:10.14359/51686890

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

Sukmin Kwon, Tomoya Nishiwaki, Takatsune Kikuta, Hirozo Mihashi

ENG - Architecture and Building Science

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	309-318
Number of pages	10
Journal	ACI Materials Journal
Volume	111
Issue number	3
DOIs	https://doi.org/10.14359/51686890
Publication status	Published - 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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Kwon, S., Nishiwaki, T., Kikuta, T., & Mihashi, H. (2014). Development of ultra-high-performance hybrid fiber-reinforced cement-based composites. ACI Materials Journal, 111(3), 309-318. https://doi.org/10.14359/51686890

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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%).",

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