96. Flexural capacity of synthetic fiber reinforced concrete slabs on ground based on beam toughness results

Title: 96. Flexural capacity of synthetic fiber reinforced concrete slabs on ground based on beam toughness results
Author(s): S. Altoubat, J.R. Roesler, K.-A. Rieder
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 1063 - 1072
Total Pages: 10
Nb references: 10
Language: English

Abstract: A test program that includes beam and full-scale slab testing was performed to demonstrate the structural performance of new macro synthetic fibers in ground-supported slabs. Full-scale results showed synthetic fibers at 0.32 and 0.48 percent volume fraction increased the flexural cracking load of concrete slabs by 25 and 32 percent, respectively compared to the plain concrete slab. The collapse load of plain concrete slab was increased 29 and 44 percent with addition of 0.32 and 0.48 percent by volume of synthetic fibers.The toughness results for two beam sizes were presented. The post-crack strength of the fiber reinforced concrete was found sensitive to the size of the beam. The small flexural beam gave greater post-crack strength than the big flexural beam. The effective toughness parameters Re,2 and Re,3 obtained from the beam tests were used to estimate the enhanced flexural cracking of the concrete slab due to synthetic fibers. The Re,3 value based on the large beam testing provides a reasonable lower bound estimate of the increase in the flexural capacity of the slab due to the synthetic fiber reinforcement.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00