COMPARISON OF PROPERTIES OF COAL-MODIFIED TAR BINDER, TAR AND ASPHALT CEMENT

THE RESULTS ARE GIVEN OF A LABORATORY STUDY OF THE PROPERTIES OF A COAL-MODIFIED TAR BINDER, PRODUCED BY THE HIGH-TEMPERATURE DIGESTION OF FINELY DIVIDED COAL IN TAR AND HIGH-BOILING TAR OILS. COMPARISONS WERE MADE OF THE PROPERTIES OF THIS BINDER WITH A NORMAL TAR PITCH, RT-12 ROAD TAR, AND AN 85-100 PENETRATION GRADE OF ASPHALT CEMENT. THE PROPERTIES OF LABORATORY MIXES MADE WITH THE MODIFIED BINDER, ROAD TAR, AND ASPHALT CEMENT WERE ALSO COMPARED. THE RESULTS INDICATE THAT THE COAL DIGESTION IMPROVES THE PROPERTIES OF A TAR WITH RESPECT TO INCREASING ITS RESISTANCE TO HARDENING AND APPARENTLY MAKES THE MATERIAL SOMEWHAT LESS BRITTLE THAN A NORMAL TAR PITCH. HOWEVER, THE IMPROVEMENTS ARE NOT CONSIDERED SUFFICIENT TO WARRANT CONSIDERING THE MATERIAL EQUAL TO AN ASPHALT CEMENT WITH RESPECT TO THESE PROPERTIES. IMMERSION-COMPRESSION TESTS INDICATE THAT THE MIXTURES MADE WITH THE MODIFIED-TAR BINDER HAVE GREATER RESISTANCE TO DETERIORATION FROM WATER THAN SIMILAR MIXTURES MADE WITH ASPHALT CEMENT. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/350/350-002.pdf
• Supplemental Notes:
  • 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:
  • Halstead, Woodrow J
  • Oglio, Edward R
  • Olsen, Robert E
• Conference:
  • 41st Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1962-1-8 to 1962-1-12
• Publication Date: 1962

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 43-57
• Monograph Title: Symposium on coal-modified tar binder for bituminous concrete pavements
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 350
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Alternatives analysis; Asphalt concrete; Binders; Brittleness; Cement; Coal tars; Compression tests; Deterioration; High temperature; Laboratory studies; Pitch (Materials)
• Old TRIS Terms: Immersion compression test
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00210826
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Jun 10 1994 12:00AM