Concrete-polymer composites represent a comparatively new class of structural material, still in the developmental stage. They are usually made by impregnating the interstices of pre-cast concrete with suitable liquid monomers and converting these to solid polymer in the concrete. The composite materials have strength properties greatly superior to those of the base concrete. This paper presents the results of some exploratory studies of the production and properties of concrete-polymer composities, in which gamma radiation was used to polymerise the monomer in the concrete. With polymethylmethacrylate composites, compressive strengths up to 117 mpa, Brazil tensile strength up to 8.95 mpa and elastic moduli up to 3.75 x 10,000 mpa were obtained with polymer loadings around 4.7%. Composites made from porous concrete (besser brick) and polyester resins had compressive strengths around 145 mpa. The main factor influencing the degree of enhancement of strength properties is the total polymer loading achieved, and the ultimate strength attainable in the composites is largely independent of the type of concrete used to make the composite. Because of the inherently low thermal stability of the polymer component, composites for structural purposes would be restricted to applications where they would not be exposed to fire. Uses envisaged for these new materials include drain piping in corrosive environments, underwater structures, bridge decking and decorative panelling. The polymerisation process can be accomplished by thermal means as well as by radiation and the method of choice for a given application will depend largely on the relative costs.(a). The number of the covering abstract of the conference is IRRD abstract no 213776 /TRRL/

  • Supplemental Notes:
    • Presented at the First Australian Conference on Engineering Materials.
  • Corporate Authors:

    University of New South Wales

    School of Civil Engineering, Anzac Parade
    Kensington, New South Wales  Australia  2033
  • Authors:
    • McLaren, K G
    • Samarin, A
  • Conference:
  • Publication Date: 0

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 137-55

Subject/Index Terms

Filing Info

  • Accession Number: 00129550
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: May 14 1976 12:00AM