INCREASED STRENGTH IN CEMENT CONCRETE REINFORCED WITH VARIOUS FIBRES, WITH PARTICULAR REFERENCE TO USE IN ROAD CONSTRUCTION. FIRST EXPERIMENTAL RESULTS

LABORATORY EXPERIMENTS WERE CARRIED OUT USING STEEL, NYLON OR ASBESTOS FIBRE. TABLES SHOW THE CALCULATED AND TESTED FLEXURAL AND COMPRESSIVE STRENGTHS OF THE REINFORCED CONCRETES AS COMPARED WITH THOSE OF PLAIN CONCRETE OF SIMILAR COMPOSITION. AFTER TESTING TO DESTRUCTION BY FLEXURAL LOADS, RESULTS OF THE EXPERIMENTS SHOWED THAT STEEL FIBERS TENDED TO INCREASE FLEXURAL STRENGTH, NYLON WAS USELESS BECAUSE OF INSUFFICIENT ADHESION TO THE MORTAR, THE FIBERS BEING EASILY EXTRACTABLE FROM THE BROKEN SAMPLES, AND ASBESTOS FIBERS HAD VERY LOW TENSILE STRENGTH BUT GOOD ADHESION TO THE MORTAR. IN INITIAL TESTS, FIBERS WERE USED IN THE FOLLOWING PROPORTIONS: 0.3 MM DIAMETER STEEL IN PIECES 2 CM LONG COMPRISING 4 PER CENT BY WEIGHT OF THE DRY MIX, 100/1 NYLON FIBRE IN PIECES 2 CM LONG COMPRISING 0.5 PER CENT BY WEIGHT OF THE DRY MIX, AND SHORT LOOSE ASBESTOS FIBERS COMPRISING 0.5 PER CENT BY WEIGHT OF THE DRY MIX. SOME RESULTS OF TESTS WITH GLASS AND SOFT IRON FIBERS ARE ALSO GIVEN. FURTHER LABORATORY TESTS AND PRACTICAL TESTS ON ROADS, VARYING THE AMOUNT AND SIZE OF THE FIBERS, ARE ENVISAGED. /RRL/

  • Supplemental Notes:
    • Vol 46, No 2, PP 137-47, 2 FIG, 4 TAB, 17 REF
  • Authors:
    • Balzano, M
  • Publication Date: 1967-2

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Filing Info

  • Accession Number: 00212808
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 12 1970 12:00AM