FIELD EXPERIMENTATION WITH BITUMINOUS UNDERSEALING MATERIALS

THE PRACTICE OF INJECTING HOT ASPHALT UNDER CONCRETE PAVEMENTS FOR STABILIZING THE SLABS AND CONTROLLING PUMPING HAS BEEN USED EXTENSIVELY IN ILLINOIS FOR SEVERAL YEARS. MUCH OF THE WORK HAS BEEN IN CONJUNCTION WITH RESURFACING OF OLD CONCRETE PAVEMENTS WITH BITUMINOUS-CONCRETE RESURFACING, WHERE THE UNDERSEAL IS USED TO FILL VOIDS IN THE SUBGRADES AND RESEAT UNSTABLE SLABS PRIOR TO RESURFACING OPERATIONS. THE UNDERSEAL MATERIAL IS A SLIGHTLY MODIFIED GRADE A OIL ASPHALT FILLER AASHO DESIGNATION: M18-42A. THIS MATERIAL APPEARS TO HAVE SATISFACTORY FLUIDITY AT THE TIME OF PUMPING AND DOES NOT BLEED EXCESSIVELY AT PREVAILING SUMMER TEMPERATURES. HOWEVER, THERE IS SOME EVIDENCE THAT THE MATERIAL BECOMES BRITTLE AND CRACKS AT LOW TEMPERATURES, DESTROYING ITS INTENDED FUNCTION AS A FLEXIBLE BARRIER AGAINST THE PUMPING OF SUBGRADE FINES UNDER HEAVY TRAFFIC. IN THE EXPERIMENT DESCRIBED, THREE ASPHALTIC MATERIALS WERE USED IN CONJUNCTION WITH TWO RATES OF APPLICATION: (1) AASHO DESIGNATION: M18-42A, WITH A MODIFIED MINIMUM LIMIT FOR DUCTILITY SET AT 3.0 CM; (2) 0-KORITE, A MATERIAL HAVING RELATIVELY HIGH DUCTILITY AT LOW TEMPERATURES; AND (3) EXPERIMENTAL NO. 2, A MATERIAL HAVING A LOW TEMPERATURE DUCTILITY MIDWAY BETWEEN THAT OF M18-42A MATERIAL AND 0-KORITE. TEST SECTIONS 4,000 FT. LONG WERE USED FOR EACH MATERIAL AND EACH RATE OF APPLICATION. CONDITION SURVEYS WERE MADE DURING THE SPRING PRIOR TO THE UNDERSEAL APPLICATION AND DURING THE SPRING FOLLOWING APPLICATION. THE SECOND SURVEY INDICATED THAT THE TREATMENT MATERIALLY REDUCED PUMPING. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/32/32-025.pdf
• Supplemental Notes:
  • Vol 32, pp 343-354, 3 FIG, 5 TAB, 1 PHOT. 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:
  • Chastain, W E
  • Burke, J E
• Publication Date: 1953

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Second Annual Meeting of the Highway Research Board, Washington, D.C., January 13-16, 1953
• Serial:
  • Highway Research Board Proceedings
  • Volume: 32
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt concrete; Bituminous materials; Concrete pavements; Pumps; Resurfacing; Sealing (Technology); Soil stabilization; Test sections; Undersealing
• Old TRIS Terms: Asphalt injection; Bituminous stabilization
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00211621
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM