The Impact Response of Normal and Very High Strength FRC Round Panels

Title: The Impact Response of Normal and Very High Strength FRC Round Panels
Author(s): Hanfeng Xu, Sidney Mindess, Nemkumar Banthia
Paper category : conference
Book title: International RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites in Structural Applications
Editor(s): G. Fischer and V. C. Li
Print-ISBN: 2-912143-93-4
e-ISBN: 2912143942
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 561 - 569
Total Pages: 9
Nb references: 13
Language: English

Abstract: The round panel test (ASTM C1550) is increasingly accepted for fiber reinforce shotcrete (FRS) design because of the larger deformations better simulate field experience. The results in static loading were sufficiently promising to warrant further studies under impact loading. Therefore centrally-loaded round panels were tested under impact loading using an instrumented drop-weight machine, in order to characterize the impact resistance and toughness of concrete. The inertial load correction was applied by using virtual work principle.
End-deformed steel fibers and structural synthetic fibers (blended polypropylene and polyethylene) at volume fractions of either 0.5% or 1.0% were added to normal strength concrete (NSC) and very high strength concrete (VHS) matrices. The strength and toughness were measured under both quasi-static loading and drop-weight impact loading. The strain rates of PPFRC and SFRC, under different drop heights of 150mm, 300mm and 500mm, were also evaluated to characterize the rate sensitivity of the materials due to fiber reinforcement and matrix variation. Finally, the strain rate sensitivity of the round FRC panel test was compared with FRC beam tests under impact loading. The plate test method appears to be better suited for FRC characterization under impact loading.

Online publication: 2005-05-15
Classification: Special Considerations
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.060