1. NRRA Mix Rejuvenator Field Sections
8/7/2019 Update for NRRA Flex Team August Meeting

2. Overview Incorporating mix rejuvenators into 40% RAP mix
MnDOT max RAP is normally 30%
Rejuvenators dosed to achieve a PG XX-34
Virgin binder is PG 58S-28
8 Rejuvenator producers participating
Potentially rejuvenator + polymer sections
40% RAP control sections for each day of construction
Field section construction over several days; morning only

3. Schedule Expected construction of test sections on 8/22/2019-8/23/2019
Pending weather and contractor schedule
Updating participants immediately as schedule updates are received
Any one is welcome to attend
Mix design will be sent out this week
Contractor is doing mix design

4. Participants Cargill Asphalt and Wax Innovations Mathy Kraton
Georgia Pacific
Poet
Ingevity
US Soybean
RAP and virgin binder sent to each
Participant for dosage testing

5. Sampling and Construction Monitoring
gallon buckets per field section
MnDOT will collect samples before paver
Binder + rejuvenator sampled at plant
MnDOT research will have someone at plant during construction
2+ people monitoring paver and taking samples

6. Future Monitoring Digital inspection vehicle
4+ times per year
Immediately after construction
Annual coring for binder tests

7. Long-term Research MnDOT will write construction report
Need to schedule TAP Meeting
Need to develop RFP for long-term research
Analyze performance testing
Conduct binder testing on plant samples – How rejuvenator changes binder properties
Analyze binder properties over time
MnDOT will core annually
Want to see if rejuvenator changes to binder last over time

8. Questions