The Effect of Fibre Reinforcing on Foamed Concrete Behaviour

This paper describes how foamed concrete consists of air entrained cement paste and the high void content results in not only a reduction in strength but also a change in the way the material fails. The relatively high cement content and lack of aggregates in foamed concrete results in high shrinkage and the formation of shrinkage cracks. Fiber reinforcing is used in order to reduce the formation of shrinkage cracks and to improve the impact resistance of normal concrete. The objective of this paper was to establish the effect of synthetic fibers on the crack formation and impact resistance of foamed concrete. The non-brittle failure and post-crack strength of foamed concrete was investigated. The results of this investigation indicate that material properties such as compressive strength, flexural strength, modulus of elasticity, porosity and water absorption cannot be improved by the addition of chopped polypropylene fibers. The use of these fibers can however significantly improve the post-cracked strength of foamed concrete.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 557-566
  • Monograph Title: Role of Concrete in Sustainable Development

Subject/Index Terms

Filing Info

  • Accession Number: 01010806
  • Record Type: Publication
  • ISBN: 0727732471
  • Files: TRIS
  • Created Date: Nov 28 2005 2:46PM