LATEX MODIFIED MORTAR REINFORCED WITH PLASTIC FIBRES - SYNERGISTICAL EFFECTS WITH RESPECT TO FRACTURE MECHANICAL PROPERTIES . NORDIC CONCRETE RESEARCH. PUBLICATION NO 8

Cement mortars (1:3) were reinforced with polyacrylonitrile (PAN) fibres at the dosages 0, 1/2, 1 and 2 vol% of the mortar. In order to improve the adhesion between the PAN fibres and the cement minerals, 5% of latexes based on the polymers styrene/butadiene-rubber, poly(vinylacetate/versatic ester) and poly-(butylacrylate/methylmethacrylate) with a functional monomer capable of forming chemical bonds with the cement minerals were added to the mortars. It was shown directly by SEM-investigations, and indirectly through improvements of mechanical properties, that the adhesion of the fibres to the paste matrix was greatly improved. The best results were obtained with the special designed acrylic latex. However, the latex additions lead to an unusual high air entrainment when used together with the fibres. The latter effect was avoided by addition of extra anti-foamer at the end of the mixing period.(A) For the covering abstract see IRRD 828653.

  • Availability:
  • Corporate Authors:

    NORDIC CONCRETE FEDERATION

    KRONPRINSENSGT 17
    Oslo 2,   Norway 
  • Authors:
    • Justnes, H
    • Karganrood, H E
  • Publication Date: 1989-12

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00604979
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM