Title:
Optimizing Ultra-High Performance Fiber-Reinforced Concrete
Author(s):
Kay Wille, Antoine E. Naaman, and Sherif El-Tawil
Publication:
Concrete International
Volume:
33
Issue:
9
Appears on pages(s):
35-41
Keywords:
ultra-high performance concrete, fiber-reinforced concrete, steel fiber, strength, strain hardening, energy absorption
DOI:
Date:
9/1/2011
Abstract:
Tensile behavior of ultra-high performance fiber-reinforced concrete (UHP-FRC) was optimized by improving the matrix packing density, using very high strength fine diameter steel fibers, and tailoring the fiber-to-matrix interface bond properties. The developed UHP-FRC mixtures achieved record high tensile strengths, up to 37 MPa (5.36 ksi). The energy absorption capacity up to peak stress was about an order of magnitude higher than the values reported by other researchers. The results imply that the new material has the potential to be particularly useful for structures subjected to blast, impact or seismic loading.