FIELD EVALUATION OF AN EXPERIMENTAL BITUMINOUS PAVEMENT UTILIZING AN ASPHALT ADDITIVE - CARBON BLACK. FINAL REPORT

In response to the Federal Highway Administration's Experimental Project No. 3, "Evaluation of Asphalt Additives," the Connecticut Department of Transportation (ConnDOT) has placed and evaluated a 2-in. bituminous surface course, which contains carbon black in the asphalt binder. The experimental roadway section is on a 2-lane minor urban arterial having an ADT of 8,000 with 5% trucks. Microfil 8, a proprietary form of carbon black, was added to make up 15% of the AC-20 liquid asphalt, by weight. The carbon black section and an adjacent control section were surveyed over 5 years. This report describes the results of these tests and compares the performance of the carbon black pavement to that of the control. A general conclusion is that the carbon black was marginally effective in reducing cold weather cracking. Its use to resist hot weather deformation is questionable.

• Corporate Authors:

  Connecticut Department of Transportation

  Division of Research, 280 West Street
  Rocky Hill, CT  United States  06067-3502

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lohrey, E C
• Publication Date: 1991-10

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Additives; Arterial highways; Asphalt mixtures; Bituminous materials; Carbon black; Cold weather; Defects; Deformation; Hot weather; Pavement cracking; Pavement distress; Pavement performance; Pavements; Streets; Surface treating
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00624955
• Record Type: Publication
• Report/Paper Numbers: FHWA-CT-RD-1085-3-91-6, 4E1A7021
• Contract Numbers: Study No. 1085
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 18 1993 12:00AM