00210826

Component

http://onlinepubs.trb.org...rbbulletin/350/350-002.pdf

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/

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01410729

pp 43-57

1962

Highway Research Board Bulletin

41st Annual Meeting of the Highway Research Board

Digital/other

Figures (8) ; References (9) ; Tables (7)

Alternatives analysis; Asphalt concrete; Binders; Brittleness; Cement; Coal tars; Compression tests; Deterioration; High temperature; Laboratory studies; Pitch (Materials)

Highways; Materials

TRIS, TRB, ATRI

Jun 10 1994 12:00AM

• COAL-MODIFIED TAR BINDERS FOR BITUMINOUS CONCRETE PAVEMENTS
• EXPERIMENTAL PAVING PROJECTS USING CURTISS-WRIGHT'S COAL- MODIFIED, COAL-TAR BINDER