Longitudinal Joint Adhesive Pavement Maintenance Bureau of Technical Services Paulette Hanna, P.E, M.Eng.
Jan 04, 2016
Longitudinal Joint Adhesive
Pavement Maintenance
Bureau of Technical ServicesPaulette Hanna, P.E, M.Eng.
• Joint Adhesive technique
• -Application of specialized
materials to the cold joint surface
• -Seals and protects the low density
area
• -Adheres and flexiblizes the joint
Low Density Zone
-Higher permeability, weaker area
-Increased oxidation/raveling
-Moisture freeze/thaw spalling
-Crack formation, spalling, widening
-Early deterioration
-Significant problem
Deteriorated Paving JointDeteriorated Paving Joint
-Raveling/Cracking-Raveling/Cracking
Requires maintenanceRequires maintenance
Shortened pavement lifeShortened pavement life
Cause Of Further Deterioration
Water Infiltration
Thermal Movement
Low Density
Further Deterioration
Discussion
• -Materials
• -Installation
• -Performance studies
• -Usage and acceptance
• -Costs
Adhesive Materials
-Hot-applied, highly polymer modified asphalts with improved high temperature stiffness
Installation
-Oil jacketed, hot applied melters
-Spray or squeegee apply to entire surface
-Approx. 1/8” thick band.
-Approx. ½” overlap on top, up to 2” on bottom
-Apply ahead of paver
-Keep traffic off of, repair any damaged areas
-Place and compact adjacent mat
Acceptance:
-Ohio Turnpike – 1998
-Michigan – 2001
-New Jersey – 1998
-Minnesota – 2002
-Indiana – 2002
-Kentucky – 2003
-New York – 2004
-Maryland – 2005
Costs
-Installed – approx. $.40/ft. or $2,000/mile
Benefits of Longitudinal Joint Adhesive
-Improved joint life
-Improved pavement life
-Delays future maintenance and related traffic delays and safety issues
What Does Longitudinal Joint Adhesive Do?
Seals and protects low density zone
Creates flexibility at the joint