1. NRRA Long Term Research Efforts
Research Pays Off
NRRA Long Term Research Efforts
April 2017

2. Welcome “Research Pays Off Seminars”
Research Pays Off Seminar Series
Every 3rd Tuesday
10-11 am
Started in June 2015
20 Seminars so far
Sign-Up

3. 2015 “Research Pays Off Seminars”
"Seminar Kick Off" Ben Worel, MnDOT Chip Seals - Use and Benefit to Minnesota Thomas Wood, MnDOT Results from the Minnesota Whitetopping Minnesota Field Review Tom Burnham, MnDOT Invention of the Aggregate Avoidance Method For Evaluating Interfacial Bond in Pavement Materials Bernard Izevbekhai, MnDOT Thermal Cracking and the Use of DCT Performance Testing Chelsea Hanson and John Garrity, MnDOT Rehabilitation of Interstate 394 in 2015: Next Generation Concrete Surface Bernard Izevbekhai and Chris Kufner, MnDOT HMA Longitudinal Joint Construction Evaluation Ed Johnson and John Garrity, MnDOT

4. 2016 (1) “Research Pays Off Seminars”
Automated Machine Guidance for Muck Excavation on CSAH 61/101
Jim Schneider, MnDOT "Wide Based Tire" - Minnesota Pooled Fund Update
Shongtao Dai and Tim Anderson, MnDOT Required Strength of Concrete Roadways Before Opening to Traffic
Lev Khazanovich, University of Minnesota Surface Textures and Their Effect on Vehicle Tracking
Bernard Izevbekhai, MnDOT Development of Whitetopping Performance Curves
Tom Burnham, MnDOT NCAT / MnROAD Project Update
Jerry Geib and Dave Van Deusen, MnDOT
MnROAD Concrete Preservation
Tom Burnham, MnDOT

5. 2016 (2) “Research Pays Off Seminars”
Feasibility of Concrete Pavement Joint Condition Evaluation 
(A 2016 UMN-MnDOT Capstone Project)
Bernard Izevbekhai, MnDOT;
Nathan Bausman, Kelsey Peterson and Brett Yanta, University of Minnesota Subsurface Condition Evaluation for Asphalt Pavement Preservation Treatments
Hyung Jun Ahn, MnDOT Prescription to Performance Initiative in Concrete (MnDOT's Journey)
Maria Masten, P.E.  MnDOT Full-Coverage Nondestructive Asphalt Pavement Compaction Assessments using GPR Array-measured Dielectrics
Kyle Hoegh, MnDOT Forensic Investigation of recycled unbound base and asphalt surface materials
Hyung Jun Ahn, MnDOT

6. 2017 “Research Pays Off Seminars”
Barriers to Implementation of In-Place Recycling
Terry Beaudry, MnDOT Dan Schellhammer, Midstate Dan Wegman, Braun Intertec
Determination of Structural Value of Geogrid Reinforcement in Pavement Layers
John Siekmeier, MnDOT
___________________________________________________
April 18 - National Road Research Alliance Long Range Research Plans
May 16 - MnROAD/NCAT Pavement Preservation Study
June – Tentative - Wisconsin’s Development of a AC grade/RAP blending chart based off DCT Performance Testing
Ray Bonaquist, Advanced Aspahtl Technologists
Barry Paye, Wisconsin DOT
Looking for your input on Future topics

7. Strategic Implementation Through Cooperative Pavement Research

8. What is NRRA? Pooled fund (Started April 2016)
Fulfill regional and national road research needs
Foster innovation with member states, academia and industry
Best Utilize
Each Members Research Efforts
MnROAD Test Track
Direct Phase-III of MnROAD Construction
$2.5 million in MnDOT funding
Develop innovative technologies
Focus on implementation, technology transfer, and training into research projects from the ground up
NRRA is a non-traditional Pooled Fund
Solve real problems identified by sponsors within one pooled fund
Members will determine what research is needed and act on the research needs
Quicker turnaround on project development (past experience with pooled funds)
State and Local agency participation
Seeking participation from local road agencies within each
Past - Multiple SPR studies worked well but could be streamlined
Phase – II 7 individual pooled funds
Each with individual budgets / meetings
Many had the same states  travel coordination
Overhead to administer
Need for collaboration not only with agencies but with key input from industry and academia
Industry –
Utilize MnROAD Facility as a National/Regional Shared Facility
MnDOT is providing 2.5 million dollars towards construction based on the recommendations of NRRA
MAPA Contractor's Workshop 2016

9. Agency Members

10. NRRA Agency Members

11. NRRA Universities

12. NRRA Associations

13. NRRA Industry

14. Budget Currently 6 states (150K/yr) 24 Associate members (2K/yr)
Research
~$1,825,200 / $608,400 yr
Tech Transfer
~$842,400 / $280,800 yr
Administration
~$140,400 / $46,800 yr
MnDOT Construction
$2.5 Million
Administration 5%
Tech Transfer
30%
Research
65%

15. NRRA Technical Teams (Glenn Engstrom – MN) Executive Committee
(Steve Krebs - WI)
(Barry Paye - WI)
(Brett Trautman - MO)
(Terry Beaudry - MN)
(Jerry Geib - MN)

16. NRRA Teams Progress Prioritized State of Practice Long Term Research
(Glenn Engstrom – MN)
Executive Committee
(Steve Krebs - WI)
(Brett Trautman - MO)
(Barry Paye - WI)
(Terry Beaudry - MN)
Prioritized
State of Practice
Long Term Research
2017 MnROAD Construction Needs
(Jerry Geib - MN)

17. State of Practice Topics
Tack Coats
Longitudinal Joint Construction Performance
Design and Performance of Concrete Unbonded Overlays
Repair of Joint Associated Distress Pavements
Larger Subbase Materials
Subgrade Design for New and Reconstructed
Surface Characteristics of Diamond Ground PCC Surfaces
Pavement preservation approaches for lightly surfaced roadways
Partial Depth Repairs of Concrete

18. NRRA Technical Teams 2017 Construction
Mainline (I-94)
Maintaining HMA and PCC Roadways (3)
Fiber Reinforcement of PCC (3)
ByPass (I-94)
HMA Overlays of PCC (8)
Enhancing Compaction (4)
Partial Depth PCC Patches (3/panels/manufacture)

19. NRRA Technical Teams 2017 Construction
Low Volume Roadway
Diamond Grinding effects on ASR Acceleration (3)
Fiber Reinforcement City Street (1)
Compacted Concrete Pavement City Street (1)
Cold Central Plant Mix (4)
Recycled Base Effectiveness (4)
Use of Large Stone Subbases (4)
PCC Early Opening to Traffic (1)
PCC Optimized Mixes (2)

20. 2017 Construction Letting date April 28, 2017SP
Letting date April 28, 2017
Construction June 5, 2017 start (original WB I-94 lanes)
Intermediate June 30, 2017 completion (original WB I-94 lanes)
Completion November 3, 2017

21. MnROAD Staff Efforts Development of Partnerships
Construction Monitoring
Material Sampling
Performance Monitoring
Cracking / Rutting / Ride
Deflection (FWD), …..
Sensor Monitoring
Static (Environmental)
Dynamic (Traffic Loading)
MnROAD Database

22. 2017 Sensors Dynamic Environmental Pressure / Strain
Temp / Moisture / Joint Movement / PCC Curing

23. Long Term Research Process
May 5
Long Term Research - Drafts by technical teams
May 15
Long Term Research - Sent to MnDOT Master List (Universities)
July
Long Term Research - Proposals Due from Universities
Long Term Research - Reviewed and selected by technical teams (presentations?)
Long Term Research - Executive Committee Reviews technical teams selections for approval
August
Long Term Research - Contracts Awarded early date

24. Fiber Reinforced PCC
Nationally, states are wanting to get a better understanding of the beneficial use of fibers in concrete pavement layers
Is it worth the cost?
How can it best utilized in both thin city streets and higher volume roadways?
Can it be used in new construction and in concrete overlays?

25. Fiber Reinforced PCC Structural fibers – 2301, S-47.6, 2301.2.L.1
Trial Batching Required
Three different fiber mixes
Provide Type III structural synthetic fibers meeting the requirements of ASTM C 1116
Listed on Illinois DOT “Qualified List of Synthetic Fibers for Material Code ”
Contractor may request use of an alternate fiber not included on Illinois DOT Approved List provided they can demonstrate it meets all requirements here-in and the requirements of Table

26. Early Opening to Traffic
What effect does heavy traffic loading have on the long-term performance of full-depth concrete pavement, as well as fast–setting repairs?
The long-term effects of these early loadings will then be evaluated.

27. Early Opening to Traffic
LVR (New Pavement - Sketch Above)
Mainline (Repairs)

28. Long-term Effects of Diamond Grinding
Each state has aggregates that have been used in concrete pavements that are considered reactive aggregates.
Questions arise as to whether diamond grinding might accelerate deterioration in these pavements?
Also what types of topical sealers can be used to treat the surface after the diamond grinding?

29. Long-term Effects of Diamond Grinding
128’ ’ ’ ’
Outside Lane 12’’
Inside Lane 12’
3 Test Sections LVR – West Loop
3 Unique ASR Aggregates

30. HMA Overlay and Rehab of Concrete and Methods of Enhancing Compaction
States are looking for longer lasting HMA overlays of concrete.
New mix designs were developed to promote long-term performance--including how reflective cracking effects can be minimized through design or other joint treatment.
Possible Partnerships for reflective cracking fabrics
Utilizes the old I-94 Westbound PCC

31. HMA Overlay and Rehab of Concrete and Methods of Enhancing Compaction
Asphalt interlayer
PASSRC
3.0% regressed air voids mix
5.0% air voids mix
______________________________
Type SP 4.75 Wearing Course (4,I)
Asphalt Interlayer, Cell 992
Type SP 9.5 Wearing Course (4,E)
Final lift, Cells 987, 992, and 993
Typical Mix - Type SP 12.5 Wearing Course (4,E)
Final lift, 5.0% AV mix, Cell 989
Final lift, 3.0% AV mix, Cell 990
Type SP 19.0 Wearing Course (4,E)
First lift, Cells 987 – 991

32. Cold Central Plant Recycling
Other states have utilized RAP stockpiles into plant mix base course mixes (layers below the wear surface) to effectively recycle these materials in a controlled mix design.
How can these layers best be utilized and what type of surface mix or chip seal can be placed on top?

33. ASPHALT BINDER TYPE AND GRADE REQUIREMENTS
Cold Central
Plant Recycling
ASPHALT BINDER TYPE AND GRADE REQUIREMENTS
CELL
SURFACE
ASPHALT TYPE
ASPHALT PG
LTC REQ
133
Double chip
Emulsion
58S-28
-21.4 °C*
233
Foam
135
1.5” HMA
XX-34
-21.4 °C
235
Over
4” CCPR layers
12” Aggregate Base / Clay

34. Recycled Aggregates in Aggregate Base and Larger Subbase Materials
States continue to look for effective ways to recycle materials into unbound bases.
This will add to MnROAD’s understanding of recycled bases and what seasonal strength values can be used for advanced Mechanistic designs--and how they are affected by size/gradation.
Partnership with Ingios, University of Texas El Paso

35. Recycled Aggregates in Aggregate Base and Larger Subbase Materials
3.5” HMA with
Cell 127 – 6” Class 6 / 18” Single Lift Large Stone
Cell 227 – 6” Class 6 / 18” Double Lift Large Stone
Cell 128 – 6” Class-6 / 9” Single Large Stone
Cell 228 – 6” Class-5Q / 9” Single Large Stone

36. Recycled Aggregates in Aggregate Base and Larger Subbase Materials
3.5” HMA
Cell 185 – 100% RPCC, Class 5Q / Sand
Cell 186 – 100% RPCC, Class 5 / Sand
Cell 188 – 100% carbonate, Class 6 / Clay
Cell 189 – RPCC/RAP, Class 6 / Clay
Class 5Q  Quality Compaction
Class 5/6  Penetration Index Method

37. Maintaining Poor Pavements
Road owners continually have less and less funding to maintain their roadway systems.
What practices should be used for stabilizing both HMA and PCC roadways when longer-term repairs cannot be done due to funding levels?

38. Maintaining Poor Pavements Cells 101 / 201 and 115 / 215 - HMA
Micro-milling with
Thinlay w/spray paver tack
Micro-surfacing
Cell 8 – PCC
Full Depth Repairs
Early Loading

39. Optimizing the Mix Components for
Contractors
What effect does low cementitious content mixes have on long-term performance and constructability of concrete pavements?
Two low cementitious content mixes will be studied to give agencies a better understanding of cost savings.
lbs cement
lbs cement
Can these savings be achieved without significantly affecting long-term performance?

40. Compacted Concrete Pavement (CCP)
for Local Streets
Compacted Concrete Pavement (CCP) is a form of Roller Compacted Concrete (RCC) that has a standard concrete pavement surface texture.
The RCC industry has been successful in Michigan and Kansas constructing CCP pavement on local streets.
This research will determine if the texture that is accomplished is durable in harsh freeze-thaw climates. .

41. Partial Depth Repair of Concrete Pavements
Agencies are continually seeking improved materials and methods for the repair of concrete pavements.
In this study, up to 15 innovative concrete pavement repair materials will be evaluated on the concrete panels of the westbound I-94 bypass parallel to the MnROAD mainline.

42. Advanced Materials Technology

43. Research Materials Sampling
Performed either by MnDOT or Consultant personnel
Concrete mixtures are included in SEQ
Bituminous mixture materials are incidental
Binder:
10 gallons per each unique grade of liquid asphalt binder and emulsion used in production of the test cells
Contractor will provide samples in eight 1-gallon and eight 1-quart metal containers for each type of binder
Mixture:
1 ton of material per each unique mixture will be collected.
Components:
1 ton of each unique aggregate (including both RAP for hot mix and CCPR) used in production of the test cell mixtures
Deliver to MnROAD stockpile area at a location designated by the Engineer for future research studies
Open to partnerships

44. NRRA is looking for your involvement
Discussion / Questions