JOB-RIGGED SPREAD PAVES 35-DEGREE SLOPES

A SPECIAL THREE-RIG PAVING TRAIN THAT CAN POUR AND FINISH CONCRETE TO TOLERANCES WITHIN 1/8 IN. WHILE TILTED 35 DEG WAS DEVISED BY A BRUSSELS CONTRACTOR TO PLACE THE STEEP BANKS OF AN AUTOMOBILE TEST TRACK IN LOMMEL, BELGIUM. THE BANKED CURVES ARE 36 FT WIDE IN PLAN, BUT VARY 11 FT 4 IN. IN HEIGHT. THIS MEANS THAT ALTHOUGH EACH OF THE SIX LANES IS 6 FT WIDE IN THE STRAIGHTWAYS, THEY RANGE FROM 6 TO 6.95 FT IN WIDTH ON THE BANKS. ALL THREE PAVING MACHINES ADJUST IN WIDTH AND ARE SELF-PROPELLED ON RAILS. THE FIRST IS AN AUGER THAT SPREADS A 5-IN LIFT OF CRANE-DUMPED CONCRETE. AFTER WIRE MESH REINFORCING HAS BEEN PLACED BY HAND, THE SECOND MACHINE CONSOLIDATES THIS LIFT WITH FIVE VIBRATORS ACROSS ITS FRONT END. THE SECOND MACHINE ALSO POURS AND VIBRATES THE UPPER 2.8-IN. LIFT, SMOOTHING THE SURFACE WITH AN EXTRUDING PLATE. THE THIRD RIG IN THE TRAIN, A STANDARD FINISHER, CARRIES MOVING SCREEDS THAT WORK AT A 30-DEG ANGLE TO THE DIRECTION OF TRAVEL, WORKING CONCRETE TOWARD THE LANES UPPER EDGE. IT BRINGS THE CONCRETE WELL WITHIN THE 1/8 IN. TOLERANCE CALLED FOR IN SPECS. THE 2 2/3-MI TRACK IS MADE UP OF TWO 1,970-FT-LONG STRAIGHT STRETCHES LINKED BY THE SUPER ELEVATED CURVES. /AUTHOR/

  • Supplemental Notes:
    • Vol 48, No 3, PP 124-126
  • Publication Date: 1966-3

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  • Accession Number: 00214697
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 26 1994 12:00AM