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MnDOT / NCAT Partnership “National Research Benefits”

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Presentation on theme: "MnDOT / NCAT Partnership “National Research Benefits”"— Presentation transcript:

1 MnDOT / NCAT Partnership “National Research Benefits”
Benjamin Worel, P.E. (MnROAD Operations Engineer) Dr. R. Buzz Powell, P.E. (NCAT Assistant Director & Test Track Manager) August 2017

2 Presentation Outline MnROAD – NCAT partnership Northern Experiment
Southern Experiment Future Opportunities

3 New First of All Thank you!

4 Investment into Pavement Research
Minnesota Highway System

5 Investment into Pavement Research
Minnesota Highway System

6 MnROAD & NCAT Background
Entering 3rd Phase / 23 Years of Customer Service 7 miles of Interstate and 2.5 Low Volume Road HMA / PCC / Composite Pavements NCAT Entering 7th 3-year Cycle / 16 Years of Customer Service 1.7 mile Test Track HMA Commonalities Built and Operational Knowledgeable Dedicated Staff History of Positive Results

7 MnROAD & NCAT Partnership
Development Informal in the past June MnROAD October NCAT FP2 / NCPP Participation Partnership Benefits Individual Strengths of Each Other Operations / Data Sharing / Analysis North/South Environmental Zones Greater National Appeal October NCAT

8 Common Activates Common Performance Monitoring Traffic Monitoring
Dedicated Pathways Van Cracking/Rutting/Ride Deflection (FWD), ….. Traffic Monitoring Sensor Monitoring Database Utilize the MnROAD common database with NCAT Communication Joint Planning Meeting with Sponsor's Website Reporting National Presentations Note schedules

9 Data Collection Frequency
Parameter NCAT Track Lee Road 159 US-280 MnROAD Site US-169 CSAH-8 Roughness Weekly 2X Month Rutting Macrotexture Crack Mapping Monthly+ 2X Year+ FWD Monthly Quarterly 3X Year Surface Friction 2X Year Permeability - Noise Minnesota ~April to December 4/26/2017

10 Partnership Vision for Nationwide Impact
To facilitate high value pavement research that addresses national needs using full-scale pavement testing facilities in both warm and cold climates on flexible, rigid, and composite pavement structures 4/26/2017

11 National Research Initiatives
National Pavement Preservation Study Development of a National Cracking Test 4/26/2017

12 2015 HMA Performance Test Research Sponsors
Maine Washington Oregon California Nevada Idaho Montana Wyoming Colorado Utah New Mexico Arizona Texas Oklahoma Kansas Nebraska South Dakota North Dakota Minnesota Wisconsin Illinois Iowa Missouri Arkansas Louisiana Alabama (DOT & DEM) Tennessee Michigan Pennsylvania New York Vermont Georgia Florida Mississippi Kentucky South Carolina North Carolina Maryland Ohio Delaware Maine Washington Oregon California Nevada Idaho Montana Wyoming Colorado Utah New Mexico Arizona Texas Oklahoma Kansas Nebraska South Dakota North Dakota Minnesota Wisconsin Illinois Iowa Missouri Arkansas Louisiana Alabama (DOT & DEM) Tennessee Michigan Pennsylvania New York Vermont Georgia Florida Mississippi Kentucky South Carolina North Carolina Maryland Ohio Delaware Michigan (upper pennisula) Michigan (upper pennisula) New Hampshire New Hampshire Massachusetts Massachusetts Rhode Island Rhode Island Connecticut Connecticut New Jersey New Jersey Indiana West Virginia West Virginia Indiana Virginia Virginia 4/26/2017

13 National HMA Cracking Performance Test
Partnerships Utilize both MnROAD / NCAT Test Tracks Top Down / Reflection / LTC cracking Efforts Range of cracking potential mixes Battery of testing of many different existing tests Nationally Goals We need tests and criteria that relate to performance. We need tests that are practical for both mix design verification and quality control testing purposes. We need tests that accommodate recycled materials, new and future additives, and combinations. OT Discuss MnDOT efforts and how this fits into many states needs Need in Mix Design but how to also add to Mix Verification Simple Test

14 2016 MnROAD Mix Designs HMA Performance Test Experiment
MIX DESCRIPTION RAP RAS CELL BINDER Aggregate Size POLY CRACK POTENTIAL High Temp Mix ~30 5 16 PG 64S-22 12.5mm No High <20 3 17 18 Med/High High Temp Mix + regressed voids (3.0) 19 Soft Binder Mix >30 20 PG 52S-34 Med Typical Low-Temp Mix 21 PG 58H-34 Yes Low Typical Low-Temp Mix + limestone 22 Low/Med HiMA Mix <15 23 PG 64E-34 Discuss performance so far – no cracking or rutting 14

15 DCT Fracture Energy Results
One example – shows differences in sampling time LMLC = 12 replicates PMLC = 16 replicates FUTURE PLAN  test aged production mix in lab, to be done later this summer

16 Illinois Flexibility Index Test (IFIT)
Another test being done

17 Rolling Density Meter RDM appears to be a valid approach to measure density Working to develop methods to assist construction Significantly higher density within mat as compared to confined and unconfined joints Relationship is unique, dielectric affected by aggregate type: Granite ~5 Limestone ~7

18 2015 Pavement Preservation Research Sponsors
Maine Washington Oregon California Nevada Idaho Montana Wyoming Colorado Utah New Mexico Arizona Texas Oklahoma Kansas Nebraska South Dakota North Dakota Minnesota Wisconsin Illinois Iowa Missouri Arkansas Louisiana Alabama (DOT & DEM) Tennessee Michigan Pennsylvania New York Vermont Georgia Florida Mississippi Kentucky South Carolina North Carolina Maryland Ohio Delaware Michigan (upper pennisula) New Hampshire Massachusetts Rhode Island Connecticut New Jersey West Virginia Indiana Virginia FP2

19 Pavement Preservation Goals
Partnership MnROAD (North) / NCAT (South) Offsite Low and High Volume Road Installations FP2 / National Center for Pavement Preservation Government / Academia / Industry involvement Goals National Study (Climatic zones) Provide consistently collected data / analysis Quantify the life extending benefits

20 Northern Pavement Preservation
County Road 146 RP 185.3 Rum River Bridge RP 189.9 US-169 High Volume Road 4 mile section County Road 8 Low Volume Road 2.5 mile section Mille Lac County

21 Thank You Contractors and Material Suppliers
Vance Brothers East Alabama Paving Brock White Crafco Colas Etnyre Hardrives Roadtec Astech Corp Martin Marietta Materials Collaborative Aggregates Asphalt Materials

22 Northern Layout of US-169/CSAH-8
High Traffic Preservation on US-169 Northern Low Traffic Preservation CSAH-8

23 Pre-Treatment Condition
US-169 Northbound Lanes 4/26/2017

24 Pre-Treatment Condition
County State Aid Highway (CSAH-8) EB and WB Lanes 4/26/2017

25 Treatment Condition (February 2017)
Construction Related Snow plow – northern need to fog chip seals

26 Chip Seal (ride) Fibermat Chip Seal (FA2.5) CRS-2L Thinlay ABR over
Northern Low Traffic Preservation CSAH-8 Fibermat Chip Seal (FA2.5) CRS-2L Thinlay ABR over Chip Seal (FA-2.5) Single Chip (FA2.5) Double Chip (FA2 over FA2.5) Single Chip (FA2.5) Crack Seal Mastic Microsurfacing (Type II) Over Single Chip (FA2.5) Triple Chip (FA2 over FA2.5 over CA-70) Thinlay ABR over Fibermat (FA-2.5) 4/26/2017

27 Microsurfacing (ride)
Northern Low Traffic Preservation CSAH-8 Micro Type III over Crack Seal & Mastic Micro Type III over Chip Seal (FA2.5) Micro Type III over Fibermat Chip Seal (FA2.5) Double Micro Type III over Type II Micro Type III over Scrub Seal (FA2.5) Micro Type III 4/26/2017

28 ¾” Micro Mill & Thin Overlays
Northern Low Traffic Preservation CSAH-8 Ultra Thin Bonded Wearing Coarse Thinlay ABR over Fibermat (FA2.5) Thinlay (4.75 mm with RAP and RAS) Thinlay ABR over Scrub Seal (FA2.5) Thinlay ABR (4.75 mm with RAP and RAS) Thinlay ABR over Chip Seal (FA2.5) Thinlay Virgin 4.75mm

29 Chatter of the Paver/Milling?
Thinlay Observation Thinlay ABR over Chip Seal (FA2.5) Somewhat Different Chatter of the Paver/Milling? Construction improvements to be considered – working great for performance so far

30 Open Graded Friction Coarse “OGFC”
MnROAD – Low Volume Road OGFC/PCC conventional tack OGFC/PCC ultrafuse tack OGFC/HMA ultrafuse tack OGFC/HMA conventional tack August 2016 – Hardrives Contractor

31 Buzz Show

32 Phase-I Preservation Group Accomplishments (Oct 2015 - Sept 2018)
3 year $120K/year (16 Agencies, 9 south, 7 north) Low and High Volume test sections built in Minnesota/Alabama South - Lee Road (2012) and US-280 (2015) North – US 169 (2016) and CSAH-8 (2016) Documentation of the construction processes Traffic Loading / Performance Monitoring Completed Sponsor meeting held to discuss direction / findings / future 2 meeting/year for 1 members from each agency 4/26/2017

33 Phase-I Preservation Group Accomplishments (Oct 2015 - Sept 2018)
Products (will be done) National best practices for construction quality QA/QC Test for micro surface and chip seals Short term condition improving benefits ongoing, with need to return to pretreatment condition for long term life extending benefit (thus, the need for phase II) 4/26/2017

34 Phase-II Preservation Group Future (Oct 2018 - Sept 2021)
3-5 year $50K/year (16 many Agencies needed) Leaning towards hosting at MnDOT More Environmental Test than Accelerated Pavement Test Continued monitoring and tracking of traffic Finalize Life Expected benefit curves for treatments Implementation assistance for agencies (via guide specifications, test procedures, training) Development of new test cells? Cost would be affected Expansion of 159,280,169,8 / New locations? 4/26/2017

35 Phase-I Cracking Group Accomplishments (Oct 2015 - Sept 2018)
3 year $210K/year (11 Agencies, 6 south, 5 north) 15 Test sections built with various cracking potential designs MnROAD test sections (thermal cracking focus) NCAT test tracks sections (top down focus) Traffic Loading / Performance Monitoring Completed Samples Collected (Binder, Design, Plant Mix, Cores) Samples tested in this study and other Universities/States for their own testing – data will be shared with the team Performance testing (in the process / will be done) Asphalt Tests done - Mixture Tests done – 4/26/2017

36 Phase-I Cracking Group Accomplishments (Oct 2015 - Sept 2018)
Sponsor meeting held to discuss direction / findings / future 2 meeting/year for 1 members from each agency Products (will be done) Which is the most repeatable test Which is the most accurate test (Test predicts field performance cracking) What still needs to be done (see phase-II) How to address aging How to red flag mixes during production 4/26/2017

37 Phase-II Cracking Group Future (Oct 2018 - Sept 2021)
3 year $100K/year (16 many Agencies needed) Leaning towards hosting at NCAT Both Loading and Environmental Test Continued monitoring and loading of test sections Update recommendations as performance changes is documented at NCAT and MnROAD (original study only had a couple years of traffic/environment Possible Improvements to testing protocols Assist agencies with shake down testing (round robin?) Implementation assistance for agencies Guide specs/procedures for mix design approval and QC 4/26/2017

38 Future - NCAT and MnROAD Partnership
2018 National Pooled Fund NCAT Projects Multiple Options $ HMA Cracking (CG) States  $100K/year Spring Test Track Sponsor Meeting (March 27-29, 2018) 2019 NCAT Construction 2016 National Pooled Fund States  $150K/year Associates  $2K/year Pavement Preservation (PG) Pooled Fund States  $50K/year Fall Test Track Sponsor Meeting (October 25-26, 2017) 4/26/2017

39 Thank You

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