Road Research

MnROAD | NRRA | Structure & Teams

Preventive Maintenance Team

The preventive maintenance team is comprised of technical experts in the area maintenance of concrete and asphalt roadways. Activities include prioritization of short and long term research, development of long term research test sections at MnROAD, and providing input for technology transfer.

Meeting minutes

PM Team meeting minutes are accessible on the Minnesota online asset management platform eDOCs. Minutes from previous meetings back to 2016 are available upon request.

NRRA Preventive Maintenance Efforts

Newly funded projects for 2023

• Hot Rubber Seal Coating to Survive Wet and Frozen Environments (2023)
• Materials-Based Methods to Improve Rumble Strip Durability (2023) co-sponsored with Flexible Team - Complete
• Use of Recycled Materials in Pavement Preservation (2023)

Concrete pavement repair

• Concrete Pavement Restoration (CPR) for Bonded Concrete Overlays of Asphalt (2019) - Complete
• Effective Long Lasting PCC Partial Depth Joint Repairs for Challenging Conditions (2017) - Complete
• Surface Characteristics of Diamond Ground PCC Surfaces (2017) - Complete

Hot mix asphalt

• Thinlay as a PM Treatment (2021)
• Service Life Enhancement of Substrates Overlaid with Thin Overlays (UTWBC, Chip Seals & Microsurfacing) for each state (2019) - Complete
• Maintaining Poor Pavements - Closed

Miscellaneous projects

• Flooded Pavement Toolkit Phase II (2021) co-sponsored with Geotech team
• Pavement Preservation Approaches for Lightly Surfaced Roadways - Complete

Reclamation

• Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements (2021) co-sponsored with Flexible, Geotech, and ICT teams

Surface treatments - bituminous pavements

• Spray on Rejuvenator Test Sections (2020)
• Bio-Materials Maintenance Treatments (2020) - Complete
• Spray on Rejuvenator Synthesis (2019) - Complete

Pavement manual information

• Illinois DOT Pavement Preservation chapter
• Minnesota DOT Pavement Preservation Manual (PDF), Feb. 2020

Specifications

• Polymer Scrub Seal (PDF) - July 19, 2016