USE OF ASPHALT EMULSIONS IN CONNECTICUT: FINAL REPORT

Five different pavement sealcoats were applied to secondary roads during August and September, 1979. The pavement-study sections were selected from ConnDOT's District I and II liquid-surface-treatment-program schedules. The performance of each was monitored for three years. The two secondary roads selected for the study had aged, distressed pavements. One lane of each two-lane road received a Class 12 bituminous concrete thin-surface-leveling course prior to sealcoating. Researchers documented the rate at which pre-existing cracks reflected through each sealcoat. The reflection cracking rate appeared to be dependent upon sealcoat thickness. All of the experimental sealcoats provided adequate skid resistance during the three-year monitoring period. Primary recommendations are: (1) Apply thicker sealcoats to lengthen service life, i.e. 3/8, 5/8, and 1/2-inch chip sealcoats will outperform thinner sand and grits sealcoats; (2) Utilize several sealcoat designs throughout the State to capitalize on locally-available and economical materials; and (3) Prepare the pavement surface to high standards prior to a sealcoat application, including the compaction of any bituminous-concrete leveling course with either rubber-tire or steel-wheel rollers. (FHWA)

• Corporate Authors:

  Connecticut Department of Transportation

  Bureau of Highways, 24 Wolcott Hill Road, P.O. Drawer A
  Wethersfield, CT  United States  06109

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Sime, J M
• Publication Date: 1982-6

Media Info

• Pagination: 146 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Emulsified asphalt; Pavement performance; Reflection cracking; Rollers; Seal coats; Secondary roads; Service life; Skid resistance; Surface treating
• Subject Areas: Design; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00372387
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-82-P0031 Final Rpt.
• Contract Numbers: 492
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 30 1983 12:00AM