Maintenance Solutions for Bleeding and Flushed Pavements Surfaced with Seal Coat or Surface Treatment
The Texas Department of Transportation (TxDOT) sought cost-effective, short-term solutions to address the problem of “bleeding” or “flushing” asphalt for its pavements with seal coats and surface treatments. To meet this need, this research project focused on documenting typical manifestations of bleeding and flushing, discovering the causes and underlying factors that contribute to bleeding and flushing, and identifying cost-effective treatment approaches.
To facilitate implementation, researchers prepared a booklet titled Maintenance Solutions for Bleeding and Flushed Pavements. Wide dissemination of this booklet at the maintenance section level, both in print and online, will be a key implementation activity. Researchers also identified three maintenance solutions which deserve further consideration: (a) use of lime water for bleeding, (b) ultra high pressure water cutting for flushing, and (c) use of the racked-in seal at intersections. A follow-up implementation study using the ultra high pressure water cutting treatment is currently underway.
Project Summary Report Here
View Maintenance Solutions Booklet Here
View Full Report Here
See Video of Ultra-High Pressure Watercutter Here
William D. Lawson, P.E., Ph.D.