SEATING OLD PAVEMENTS WITH HEAVY PNEUMATIC-TIRED ROLLERS BEFORE RESURFACING
AFTER REVIEWING SPECIFICATIONS REQUIRING THE USE OF 50- TO 60-TON RUBBER-TIRED COMPACTORS, IT HAS BEEN CONCLUDED THAT THE COMPACTOR IS NOT ALWAYS ENTIRELY EFFECTIVE AS A MEANS FOR SEATING SLABS THAT ARE BRIDGING OVER SUBSIDED AREAS IN SUBBASES. IT WAS DECIDED THAT EACH PROJECT BE JUDGED ON ITS OWN MERITS. ONE PROJECT USED 50-TON COMPACTORS EFFECTIVELY AND ANOTHER NEEDED A HEAVILY LOADED EARTH-MOVING TWO-AXLE TYPE OF WAGON PULLED BY A CRAWLER-TYPE TRACTOR. IT WAS CONCLUDED THAT THE BREAKING DOWN OF THE SLABS FOR SEATING OF AN OLD PAVEMENT IS ONLY PART OF THE BENEFITS TO BE DERIVED FROM THIS TYPE OF IMPROVEMENT, WHICH IS DESIGNED TO ELIMINATE FUTURE SUBSIDED AREAS AND PREVENT REFLECTION CRACKS COMING THROUGH THE PAVEMENT. THE SECOND IMPORTANT PART OF THIS TYPE OF CONSTRUCTION IS THE PLACING OF A BLANKET OF AGGREGATE OVER THE OLD PAVEMENT WITH A MINIMUM THICKNESS OF 4 IN. OVER HIGH POINTS. THIS LAYER WAS FOUND TO BE NECESSARY TO PREVENT REFLECTION CRACKS FROM AGAIN APPEARING ON THE SURFACE.
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Supplemental Notes:
- No 11, pp 99-100 Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Stackhouse, J L
- Publication Date: 1963
Media Info
- Media Type: Digital/other
- Pagination: 2p
- Monograph Title: Maintenance practices
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Serial:
- Highway Research Record
- Issue Number: 11
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Asphalt concrete; Concrete pavements; Portland cement concrete; Prevention; Reflection cracking; Resurfacing; Seats; Settlement (Structures); Specifications; Subsidence (Geology); Surface course (Pavements); Truck tractors; Vibration
- Old TRIS Terms: Two-axle wagon
- Subject Areas: Geotechnology; Highways; Security and Emergencies; Vehicles and Equipment;
Filing Info
- Accession Number: 00219217
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jan 25 1994 12:00AM