TRACTOR-MOUNTED SQUEEGEE SEALS CRACKS ALONG WIDENING STRIPS

JOINTS BETWEEN THE WIDENING STRIP AND THE ORIGINAL PAVEMENT ALONG HUNDREDS OF MILES OF INDIANA STATE HIGHWAYS ARE BEING SEALED BY A RAPID, EFFICIENT METHOD. BESIDES SEALING WIDENING STRIP JOINTS AND OTHER LONGITUDINAL JOINTS OR CRACKS, THE SQUEEGEE APPROACH WAS USED FOR SEALING FINE PATTERN CRACKS THAT OCCUR IN FLEXIBLE BITUMINOUS ROADS INVOLVING BUILT-UP TREATMENT MATS OR ASPHALT CONCRETE. IT IS ALSO FOR REFLECTED CRACKS AND JOINTS ALONG THE EXTENSIVE MILEAGE OF ASPHALT OVERLAY CONCRETE. THIS ECONOMIC SQUEEGEE METHOD INVOLVES THOROUGHLY CLEANING OUT THE CRACKS FIRST AND THEN WORKING THE ASPHALT IN THOROUGHLY. AN AIR NOZZLE ON PIPE EXTENDING IN FRONT OF THE TRACTOR BLOWS DIRT OUT OF CRACKS. ASPHALT IS METERED THROUGH THE NOZZLE OF THE PIPE TO EXACTLY SUFFICE FOR THE CRACK FILLING. THE SQUEEGEE IS MOUNTED BY A SIMPLE SPRING SUSPENSION UNDER THE TRACTOR FRAME. IT WIPES UP ALL BUT A TRACE OF ASPHALT ALONGSIDE THE CRACK FORCING MATERIAL INTO THE CRACK. THE SQUEEGEE ASSEMBLY INCLUDES A REPLACEABLE NEOPRENE RUBBER BLADE WHICH RIDES THE PAVEMENT WITH PRESSURE ADJUSTED TO DO THE BEST JOB. A UNIFORM, WELL-CONTROLLED DROP OF BLOTTING SAND IS PROVIDED WITH AN OLD SPREADER BOX MOUNTED JUST UNDER THE TAILGATE. A DRAG STRIP TOWED BY THE TRUCK CONVERGES THE SAND OVER THE JOINT.

• Supplemental Notes:
  • Vol 8, No 6, PP 36-38, 7 PHOT
• Publication Date: 1970-6

Media Info

• Serial:
  • Rural and Urban Roads

Subject/Index Terms

• TRT Terms: Asphalt; Bituminous overlays; Cleaning; Joint sealers; Joint sealing; Longitudinal joints; Neoprene; Pavement widening; Pavements; Reflection cracking; Repairing; Spreaders
• Uncontrolled Terms: Repairs
• Old TRIS Terms: Highway pavement
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218603
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 17 1970 12:00AM