CRACKING THE CRACKED CONCRETE PROBLEM

This article gives a brief account of a system developed by the University of Salford to increase the tensile strength of concrete beams. The method, which has been patented, is based on the principle of external reinforcement formed by laying absestos reinforced cement channels in the shutters and casting the beams in the normal way. The author points out the disadvantages which result from the low tensile strength of plain concrete and the production of cracks before steel reinforcement can play its part, in conventional beams. The bonding between the asbestos reinforced layer and the remainder of the concrete is discussed together with the difference in strength. A brief description is given of laboratory tests which have shown that fibre reinforced beams show much less cracking than conventional beams. Mention is made of research into the various parameters of fibrous channels including their depth, fibre content and porosity. The remainder of the article briefly deals with possible uses of the technique, which include volume reduction in steel and concrete and eliminating the need for protecting steel reinforcement from corrosion. /TRRL/

Media Info

  • Features: Photos;
  • Pagination: p. 22-23
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097970
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 18 1975 12:00AM