Pavement Preservation for HMA Pavements: Crack Sealing, Chip Sealing, and Microsurfacing

Rural paved road

Date and Location

Not currently scheduled.

About the Workshop

This workshop will provide attendees with current best practices on pavement preservation methods, including design and construction. The workshop structure encourages open discussion and allows attendees to share their experiences and concerns. After attending this workshop, participants should be able to select, design, and construct HMA pavement preservation projects.

Topics Covered

Crack Sealing

  • How and why pavement cracks
  • Why treating pavement cracks is important
  • Methods to limit/reduce and treat pavement cracking
  • Clean and seal
  • Rout and seal
  • Sealants: uses, selection, and estimated quantities
  • Equipment
  • Recommended practices
  • Dealing with large cracks
  • Leveling or smoothing cupped cracks
  • Parking lots
  • Recreational trails

Chip Sealing and Microsurfacing

  • Why do pavement preservation
  • Project selection and design
  • Materials
  • Construction best practices
  • Inspection
  • Fog sealing

Who Should Attend

County or city engineers or their technical staff who have responsibility for designing and/or managing pavement preservation projects.

Course Instructor

Thomas Wood has worked in road construction and maintenance for more than 40 years. He has a mix of public and private service experience. For the last 21 years, he has worked on pavement preservation treatments, specializing in emulsion base methods. He also teaches classes for Minnesota LTAP and the National Center for Pavement Preservation. Wood retired from MnDOT in July 2016 after more than 28 years of service. He currently works for WSB & Associates, continuing to promote the use of pavement preservation as a method to extend pavement life.



This workshop is presented by Minnesota LTAP at the Center for Transportation StudiesUniversity of Minnesota. Minnesota LTAP is sponsored by the Minnesota Local Road Research Board (LRRB) and the Federal Highway Administration (FHWA). This course is subsidized through funding from LRRB and FHWA.