ASPHALT PAVING WITH AUTOMATIC SCREED CONTROL

BITUMINOUS PAVERS WITH A FLOATING SCREED UNIT, EQUIPPED WITH AUTOMATIC SCREED CONTROL WERE TESTED. ON HIGHWAY N 1, IN SWITZERLAND, AN EQUILIZING COURSE AND A WEARING COURSE WERE LAID ON A BITUMINOUS BASE COURSE. ALTHOUGH THE DEVIATIONS FROM TRUE PROFILE IN THE BASE AMOUNTED TO 2 IN., NO ATTEMPT WAS MADE TO PATCH UP THE HOLLOWS FIRST MANUALLY. THE AVERAGE DEVIATION FROM TRUE GRADE WAS BASE COURSE-0.3 IN BINDER COURSE -0.13 IN, AND WEARING COURSE - 0.10 IN. THE TESTS PROVE THAT OWING TO THE ELECTRONIC SCREED CONTROL IT IS POSSIBLE TO LAY SURFACES OF OUTSTANDING SMOOTHNESS, EVEN WHEN THERE ARE LARGE DEPRESSIONS AND ELEVATIONS IN THE BASE. HIGH PRIMARY COMPACTION THROUGH THE SCREED IS OF GREAT IMPORTANCE IN SMOOTHING OUT AN UNEVEN BASE BY MACHINE WITH- OUT PREVIOUS MANUAL PATCHING.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1966/132/132-004.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Construction Practice--Flexible Pavement and presented at the 45th Annual Meeting. 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.
• Authors:
  • Blumer, Mathias
• Publication Date: 1966

Media Info

• Media Type: Digital/other
• Features: Figures;
• Pagination: pp 52-66
• Monograph Title: Bituminous concrete construction
• Serial:
  • Highway Research Record
  • Issue Number: 132
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt pavements; Base course (Pavements); Binder course; Bituminous pavements; Calculation; Compaction; Crash investigation; Electronic control; Pavements; Pavers; Paving; Screeds; Smoothness; Studies; Surface course (Pavements); Texture; Wearing course (Pavements)
• Uncontrolled Terms: Computation
• Old TRIS Terms: Floating screed unit
• Subject Areas: Construction; Highways; Materials; Pavements; Safety and Human Factors;

Filing Info

• Accession Number: 00210314
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 18 1994 12:00AM