MnROAD/NCAT Partnership Safer, Smarter, Sustainable Pavements through Innovative Research Allen Gallistel (presentation from Jerry Geib) ETF Meeting - November 29, 2017

National Pavement Preservation Study, 3-$120k TPF-5(267) National Pavement Preservation Study, 3-$120k Development of a National Cracking Test, 3-$210k Partnership exists “within” the pooled fund. MnDOT is a subcontractor to Auburn Univ (NCAT is a non profit arm of Auburn). Test track is funded by a pooled fund, with AL DOT as the lead. Running 6-7 businesses out of the same checking account.

Outline MN Weather MnDOT site Ride Data US 169 CSAH 8 MnROAD – low volume OGF

Weather facts are not Boasting or complaining. Just our story. Our challenge, Design for loads, Design for the environment (northern half of the state) Colder than 96% of the world’s population. Statewide temps Jan. 2, 2014 7:48am Superpave -34 binders work!! -34C = -29.2F Duluth this winter 74 days below ZERO. A nice run of 23 consecutive days below zero. XX days below zero in the winter of 2013-2014. The worst winter in the Twin Cities since 83-84. Note International Falls -41

Low Temperature Cracking Development of SuperPave Original MnROAD Test Sections (PG 64-22, PG 58-28) 1999 MnROAD Test Cells (PG 58-28, PG 58-34 , PG 58-40) HMA examples for polymer binders. Pre Superpave, MnROAD thermal cracks were about every 25 feet. 500’ / 20 cracks = 25’ crack spacing.

National Pavement Preservation Study Mille Lacs County Rum River Bridge RP 189.9 US-169 High Volume Road 4 mile section Pease CSAH 8 Low Volume Road 2.5 mile section MnROAD RP 185.3

Northern Low Traffic Preservation CSAH-8 High Traffic Preservation on US-169 Current experiment design of northern MnDOT sections Next 10 slides, I will explain 7

National Pavement Preservation Study Goals National Study (Climatic zones) Provide consistently collected data / analysis Quantify the life extending benefits Improve and/or extend the pavement life Cost effectiveness LIFE EXTENDING BENEFITS THIS IS MY MOST IMPORTANT ASPECT OF THE STUDY THIS IS WHY THE HARD WORK

PreTreatment Condition US-169 Northbound Lanes Smoother than CSAH 8 Surface cracking

Did not effect ride as much as maybe thought it would.

Two mills used. The three sections with better ride improvement were done full lane width. The other 3 sections used an 8’ mill.

PreTreatment Condition CSAH-8 East and Westbound Lanes Very good tight HMA surface. Transverse cupped cracks.

Northern Low Traffic Preservation CSAH-8 EXPLAIN RIDE NUMBERS Single, double, triple. With fibers. With a rejuvenating emulsion. Under microsurfacing. Under Thinlay.

Northern Low Traffic Preservation CSAH-8

Nov 30, 2016 CSAH 8 Cell 18

Open Graded Friction Coarse“OGFC” On MnROAD low volume loop. OGFC/PCC conventional tack OGFC/PCC ultrafuse tack OGFC/HMA ultrafuse tack OGFC/HMA conventional tack August 2016 – Hardrives Contractor 18

New NEW LOGO

Contractors and Material Suppliers 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

Thank You – Allen Gallistel For more Information -Jerry Geib Allen.Gallistel@state.mn.us For more Information -Jerry Geib jerry.geib@state.mn.us