THE USE OF DICHLOROMETHANE IN THE RECOVERY OF BITUMEN FROM ROAD MATERIALS

CARBON DISULPHIDE, WHICH IS THE SOLVENT SPECIFIED FOR USE IN THE STANDARD METHODS OF RECOVERING BITUMENS FROM ROAD MATERIALS, IS HIGHLY FLAMMABLE AND EXTREMELY TOXIC. THIS REPORT GIVES THE RESULTS OF EXPERIMENTS CARRIED OUT TO DETERMINE WHETHER DICHLOROMETHANE, WHICH IS NON-FLAMMABLE AND OF LOW TOXICITY, COULD BE USED INSTEAD. THESE RESULTS SHOW THAT THE SUBSTITUTION CAUSES NO MARKED CHANGE IN THE VISCOSITY OF PENETRATION-GRADE BITUMENS SUBJECTED TO THE RECOVERY PROCESS. DICHLOROMETHANE CANNOT AT PRESENT BE RECOMMENDED FOR THE RECOVERY OF CUT-BACK BITUMENS AND THE PROBLEM OF RECOVERY OF SUCH BINDERS WITH ANY SOLVENT REQUIRES FURTHER INVESTIGATION. /AUTHOR/

• Supplemental Notes:
  • Lr94, 7 pp
• Corporate Authors:

  MINISTRY OF TRANSPORT, LONDON (UK)

  ,    
• Authors:
  • Goodsall, G C
• Publication Date: 1967

Media Info

• Serial:
  • Rrl Reports, Road Research Lab /UK/

Subject/Index Terms

• TRT Terms: Binders; Bitumen; Carbon inorganic compounds; Liquid asphalt; Materials; Pendulum tests; Solvents; Toxicity; Viscosity
• Uncontrolled Terms: Recovery
• Old TRIS Terms: Carbon compounds; Carbon disulfide; Cut back; Dichloromethane
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00210803
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: May 6 1994 12:00AM