MODE II FRACTURE OF FIBRE REINFORCED CONCRETE MATERIALS

The paper describes experimental results which have been obtained for mode II (shear) fracture of polypropylene and steel fibre reinforced concrete. The mode II test specimens are 100 x 100 x 200 mm prisms, modified by the introduction of two opposite but displaced notches. A shear stress distribution is created in the area between the roots of the two notches when the specimen is subjected to longitudinal central loading. The fracture toughness results in shear are independent of the fibre content of the mix for both types of fibre. This result is in contrast to results for steel fibre reinforced concrete which increase with increasing fibre content. Toughness index results (which are a measure of the post cracking performance of the materials) are also reported for the steel fibre reinforced concrete. The toughness index increases with increasing fibre content but only at half the rate which is achieved under mode i (crack opening displacement) conditions. The main conclusion from the study is that the shear performance of fibre reinforced concrete is not enhanced by the inclusion of fibres to the same extent as that observed under mode i conditions. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02625075
• Corporate Authors:

  Construction Press

  Longman House, Burnt Mill
  Harlow, Essex CM20 2JE,   England 
• Authors:
  • Liu, K
  • BARR, BIG
  • Watkins, J
• Publication Date: 1985-5

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 93-101
• Serial:
  • International Journal of Cement Composites and Lightweight Concrete
  • Volume: 7
  • Issue Number: 2
  • Publisher: Longman Group UK Limited
  • ISSN: 0262-5075

Subject/Index Terms

• TRT Terms: Cracking; Deformation curve; Failure; Fiber reinforced concrete; Fibers; Fracture mechanics; Material reinforcement; Polypropylene; Polyvinyl hydrocarbons; Reinforced concrete; Reinforcing materials; Shear strength; Shear stress; Steel; Strength of materials; Tests; Toughness
• Uncontrolled Terms: Fracture
• Old TRIS Terms: Toughness index
• ITRD Terms: 5211: Cracking; 5520: Failure; 4557: Fibre; 7422: Polyvinylhydrocarbon; 4794: Reinforced concrete; 3471: Reinforcement (in mater); 5531: Shear; 4542: Steel; 5544: Strength (mater); 6255: Test
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00450884
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Aug 27 2004 9:57PM