Research Pays Off Seminars: Long-Term Research Efforts | April 2017

1. 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 WhitetoppingMinnesota 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, MnDOTRehabilitation of Interstate 394 in 2015:  Next Generation Concrete Surface Bernard Izevbekhai and Chris Kufner, MnDOTHMA 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, MnDOTRequired Strength of Concrete Roadways Before Opening to Traffic Lev Khazanovich, University of MinnesotaSurface Textures and Their Effect on Vehicle Tracking Bernard Izevbekhai, MnDOTDevelopment of Whitetopping Performance Curves Tom Burnham, MnDOTNCAT / 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 MinnesotaSubsurface Condition Evaluation for Asphalt Pavement Preservation Treatments Hyung Jun Ahn, MnDOTPrescription to Performance Initiative in Concrete (MnDOT's Journey) Maria Masten, P.E.  MnDOTFull-Coverage Nondestructive Asphalt Pavement Compaction Assessments using GPR Array-measured Dielectrics Kyle Hoegh, MnDOTForensic 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, MnDOTDan Schellhammer, MidstateDan 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 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. (Jerry Geib - MN) NRRA Technical Teams (Glenn Engstrom – MN) Executive Committee (Steve Krebs - WI) (Barry Paye - WI) (Brett Trautman - MO) (Terry Beaudry - MN)

16. NRRA Teams Progress (Jerry Geib - MN) (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

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 SP 8680-180 • Letting date April 28, 2017 • Construction June 5, 2017start (original WB I-94 lanes) • Intermediate June 30, 2017completion (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 • Pressure / Strain • Environmental • Temp / Moisture / Joint Movement / PCC Curing

23. Long Term Research Process

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 43515.” • 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 2301-5

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’ 128’ 128’ 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 • 1.5” – 4” HMA • 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. Cold Central Plant Recycling 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. • 475-500 lbs cement • 430-470 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