ULTRA HIGH PERFORMANCE FIBER REINFORCED CONCRETE UNDER IMPACT LOADING

Author(s): D.-Y. Yoo, N. Banthia and Y.-S. Yoon
Book Title: Seventh International RILEM Conference on High Performance Fiber Reinforced Cement Composites (HPFRCC7)
Editor: H.W. Reinhardt, G.J. Parra-Montesinos, H. Garrecht
ISBN: 978-2-35158-145-2
e-ISBN: 978-2-35158-146-9
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 217-224
Total Pages: 8
Language: English

Abstract: The main objective of this research is to investigate the low-velocity impact response of steel-fiber-reinforced concrete (SFRC) beams with various strengths. For this, three different types of concrete mixtures having normal, high, and ultra-high compressive strengths and two different volume fractions of hooked steel fibers were used. In addition, reactive powder concrete (RPC) including 2 vol.% of high-strength straight steel fibers was considered to compare the impact resistances. The impact tests were carried out by using a drop-weight impact test machine for various incident kinetic energies providing average strain rates between 4 s-1 and 10 s-1, and the residual flexural tests were performed according to ASTM C 1609 after impact damage. Higher load carrying capacities under flexure were obtained with higher kinetic energy and compressive strength. RPC exhibited much better impact and residual performances under flexure than other SFRCs. Finally, a higher strength concrete showed a less sensitivity behavior to stress-rate.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00