Comparative toughness testing of fiber reinforced concrete

L. Chen, S. Mindess, D. R. Morgan, S. P. Shah, C. D. Johnston, M. Pigeon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations

Abstract

Round-robin tests of the flexural toughness of fibre reinforced concrete were carried out using six different testing machines in five different laboratories. Six groups of beams, including a plain concrete control, two different volumes of polypropylene fibres, and three different volumes of steel fibres were tested in accordance with ASTM CIO 18, with special care taken to exclude the "extraneous" deflections due to deformations at the specimen supports. The results from each laboratory were used to compute the ASTM C1018 toughness indices I5, Iio, I20,130 and I50, and the corresponding residual strength factors Rs.io, Rio,2o, R20.30 and Rso.so- In addition, the JSCE Toughness and Toughness Factor were also computed. It was found that, although the load vs deflection curves were inherently quite variable, in most cases there was no significant difference amongst the participating laboratories, except for those mixes with a very low toughness. It was found that the ASTM C1018 toughness indices, particularly I5 and Iio, did not discriminate very well amongst the different fibre contents or different fibre types; the JSCE parameters were rather more successali in this regard.

Original languageEnglish (US)
Title of host publicationTesting of Fiber Reinforced Concrete
EditorsDavid J Stevens, Nemy Banthia, Vellore S. Gopalaratnam, Peter C. Tatnall
PublisherAmerican Concrete Institute
Pages41-75
Number of pages35
ISBN (Electronic)9780870316531
StatePublished - Aug 1 1995
Externally publishedYes
EventTesting of Fiber Reinforced Concrete at 1995 ACI Spring Convention - Salt Lake City, United States
Duration: Mar 5 1995Mar 10 1995

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-155
ISSN (Print)0193-2527

Conference

ConferenceTesting of Fiber Reinforced Concrete at 1995 ACI Spring Convention
Country/TerritoryUnited States
CitySalt Lake City
Period3/5/953/10/95

Keywords

  • Fiber reinforced concretes: fibers
  • Flexural strength
  • Polypropylene fibers
  • Steels
  • Strength
  • Tests: toughness

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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