STEEL FIBRE CONCRETE LAYER TO REPLACE BLACKTOP CARPET

THIS BRIEF REPORT REFERS TO THE FULL SCALE EXPERIMENT ON THE M1O OF THE TRANSPORT, AND ROAD RESEARCH LABORATORY. A LENGTH OF STEEL FIBRE REINFORCED CONCRETE IS BEING LAID ON TOP OF EXISTING CONCRETE ROAD SLABS. IT IS CUSTOMARY TO OVERLAY OR CARPET A CONCRETE ROAD IN NEED OF STRENGTHENING WITH A BITUMINOUS LAYERS, BUT THE HIGH COST OF BITUMEN HAS ENCOURAGED THE TRRL INTO ACCELERATED TESTING OF THIN CONCRETE OVERLAYS REINFORCED WITH STEEL FIBRES. FIELD TESTS HAVE SHOWN THAT THIS MATERIAL'S CONCRETE PROPERTIES SHOW IMPROVED FLEXURAL AND SHEAR STRENGTH THEREBY ALLOWING THINNER LAYERS OF MATERIAL TO BE USED. THE M10 EXPERIMENT IS SPLIT INTO 16 SECTIONS, EIGHT ON THE NEARSIDE LANE AND EIGHT ON THE ADJACENT OFFSIDE LANE. IN EACH LANE 4 SECTIONS ARE OF 80 MM THICK OVERLAY AND THE OTHER FOUR ARE 60 MM THICK. FOR EACH THICKNESS 1,2 AND 3 PERCENT STEEL CONTENT IS BEING TRIED BOTH AS BONDED AND UNBONDED OVERLAY.

Media Info

  • Features: Photos;
  • Pagination: p. 14-15
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00083373
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: May 1 1975 12:00AM