• The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Development of Ultra-High-Performance Hybrid Fiber-Reinforced Cement-Based Composites (with Appendix)

Author(s): Sukmin Kwon, Tomoya Nishiwaki, Takatsune Kikuta, and Hirozo Mihashi

Publication: Materials Journal

Volume: 111

Issue: 3

Appears on pages(s): 309-318

Keywords: energy-absorption capacity; hybrid; hybrid fiber-reinforced cement-based composite; macrofiber; microfiber; tensile-strain capacity; tensile strength

DOI: 10.14359/51686890

Date: 5/1/2014

A new ultra-high-performance hybrid fiber-reinforced cement-based 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%).