Evolution of toughening behavior of fiber reinforced concrete

Title: Evolution of toughening behavior of fiber reinforced concrete
Author(s): D. A. Lange, C. J. Lee
Paper category : conference
Book title: International Workshop High Performance Fiber Reinforced Cement Composites
Editor(s): A. E. Naaman and H. W. Reinhardt
Print-ISBN: 2-912143-38-1
e-ISBN: 2912143799
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 177 - 186
Total Pages: 10
Nb references: 6
Language: English

Abstract: The effect of age on the properties of fiber reinforced concrete(FRC) was investigated. Three point bending test of notched beam specimen was adapted for this study. Hooked-end steel fiber (DRAMIX 40/30) was used as a fiber ingredient to investigate w/c ratio and fiber volume fraction effect on toughness development. Three different water-cement ratios (0.44, 0.5 and 0.6) and fiber volume fractions (0%, 0.5% and 1%) were used as influence factors. Additional two kinds of fiber, a flattened-end steel fiber (NOVOTEX FE0730) and a synthetic fiber (STRUX90/40), were used to investigate the fiber type effect on toughness development. Each type of mixtures was tested at five different ages, 0.5, 1, 3, 7 and 28 days. The study shows that fracture toughness development with age is quite different from other concrete material properties such as compressive strength. The study also shows that the toughness development trend correlates more closely to w/c ratio than to fiber volume fraction or fiber type.

Online publication: 2003-04-28
Publication type : abstract_only
Public price (Euros): 0.00