Maintenance Solutions for Bleeding and Flushed Pavements Surfaced with a Seal Coat or Surface Treatment

Details

• Creators:
  Lawson, William D. ; Leaverton, Michael ; Senadheera, Sanjaya
• Corporate Creators:
  Texas Tech University. Dept. of Civil Engineering
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bleeding (Pavements)
  • Viscous flow
  • Seal coats
  • Surface course (Pavements)
  • Chip seals
  • Sealing compounds
  • Binder course
  • Binder content
  • Aggregates
  • Preventive maintenance
  More +
• Publication/ Report Number:
  FHWA/TX-06/0-5230-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; 9/1/2005-8/31/2006.
• Corporate Publisher:
  Texas Tech University. Center for Multidisciplinary Research in Transportation
• Abstract:
  This report summarizes the findings of research directed at identifying maintenance solutions for bleeding and ; flushed asphalt pavements surfaced with seal coats or surface treatments. Although the basic mechanism associated with ; both bleeding and flushing has to do with excess asphalt binder filling the voids between aggregate particles, the terms are ; different ― “flushed” is past tense; whereas, “bleeding” is an active verb. Factors that contribute to bleeding and flushed ; pavements include aggregate issues, binder issues, traffic issues, environmental issues, and construction issues. There is no ; better advice for dealing with bleeding and flushed pavements than to avoid the problem from the outset. Bleeding is an ; immediate maintenance problem that must be addressed using corrective or in some cases, emergency, maintenance. The ; basic approaches used to treat bleeding either (a) bridge over the liquid asphalt by applying aggregate of various types and ; gradations, (b) cool off the pavement surface by applying water with or without additives, or (c) remove the bleeding ; asphalt and rebuild the pavement seal. Flushed asphalt pavement, in contrast to bleeding, is typically not a maintenance ; problem that must be addressed immediately. The basic approaches used to treat flushed pavements either (a) retexture the ; existing flushed pavement surface or (b) add a new textured surface over the flushed pavement. Our research suggests that ; the use of polymer modified and other binders has improved seal coat and surface treatment performance such that bleeding ; and flushing problems are becoming less common. Three promising areas for further research and implementation relative ; to bleeding/flushing solutions include (a) use of lime water, (b) ultra high pressure water cutting, and (c) use of the rackedin ; seal at intersections.
  More +
• Format:
  PDF
• Funding:
  0-5230
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24774/dot_24774_DS1.pdf
• File Type:
  [PDF - 4.58 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:33f746f9f52c1ad8ec2db1b8c9ec7656f1f78124c2bc4f4fcb7a0fb53fdcb377