Fracture mechanics size effect and ultimate load of beams under torsion

Zdeněk P. Bažant, Siddik Şener, Fere C. Prat

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

1 Scopus citations


This symposium contribution gives a preliminary report on tests of the size effect in torsional failure of plain and longitudinally reinforced beams of reduced scale, made of micro-concrete. The results confirm that there is a significant size effect, such that the nominal stress at failure decreases as the beam size increases. This is found for both plain and longitudinally reinforced beams. The results are consistent with the recently proposed Bazant's size effect law. However, the scatter of the results and the scope and range limitations prevent it to conclude that the applicability of this law has been proven in general,.

Original languageEnglish (US)
Title of host publicationFracture Mechanics
Subtitle of host publicationApplication to Concrete
EditorsVictor C. Li, Zdenek P. Bazant
PublisherAmerican Concrete Institute
Number of pages8
ISBN (Electronic)9780870316159
StatePublished - Jan 1 1990

Publication series

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


  • Beams (supports)
  • Dimensional analysis
  • Fracture properties
  • Loads (forces)
  • Reinforced concrete
  • Tests
  • Torsion

ASJC Scopus subject areas

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


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