NCAT Pavement Test Track at Auburn University Research Update 10.0 million ESALs Washington Oregon California NCAT Pavement Test Track Nevada Idaho Utah Arizona Montana Wyoming Colorado New Mexico Pre-2012, 2012, 2015 at Auburn University North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Wisconsin Missouri Arkansas (upper pennisula) Illinois Mississippi Louisiana Indiana Kentucky Tennessee Alabama (DOT & DEM) Ohio Georgia Vermont New Hampshire Massachusetts New York Rhode Island Connecticut Pennsylvania New Jersey Delaware West Maryland North Carolina South Carolina Florida Maine FHWA Private Sector Sponsors Cargill Deicing Technology FP2 Kraton Polymers Modified Asphalt Solutions Oldcastle Materials Polycon Manufacturing Seneca Petroleum Shell Sulfur Solutions Trinidad Lake Asphalt 1
Content Preliminary 2012 Track findings 2012 preservation group (PG) study Expectations for 2015 research cycle 3 Surface Crack Prevention 6.5M etac 0.10/0.06 UltraFuse 0.15/0.15 Trackless 0.06/0.03 2
Porous Friction Course Permeabilities 5 Safety Edge Research 3
Lower Cost and Longer Life (GG) 2012 Green Group (GG) Experiment GTR (+54%) RAP+RAS (+39%) RAP1 Control RAP2 (+72%) 7 Prevention of Reflective Cracking Chip (N12) OGI (N13) 8 4
Cold Recycle Structural Contribution 0.36 Layer Coefficient 0.39 40% 70% Pavement Preservation 5
Pavement Preservation Cracking Performance No cracking has returned in three sections All cracking has not returned in any section On average 47% of cracking has returned Less cracking in more robust treatments. 6
Options in the 2015 Research Cycle Traffic continuation Mill/inlay sections Structural sections Pavement preservation 14 7
NCAT Expectations for 2015 Track Durability of innovative OGFC surfaces Surface crack prevention 100% RAP foamed CCPR base mix continuation Expanded study of thin overlay mixes Asphalt based high friction surfaces Crack prediction test for ALL mix types (CG) Continuation/expansion of preservation (PG15). 15 Cracking Group (CG) Study Focus on surface layer (top down cracking) Mixes with a range of cracking susceptibilities Choose thickness design to yield rapid results Under designed 6 inch thickness from 2012 GG study Plant run mix subjected to battery of lab tests Same mix in base/binder layers reduces lab costs. Surface HiMA Virgin 20% RAP 20 35% RAP 35 5% RAS 25 15+5 30+5 AZ GTR Binder Base 16 8
Preservation Group (PG15) Study Continue monitoring 12 sections (Track & 159) Capture life extending benefit curve data Partnership with MnRoad for nationwide scope Build new sections on higher ADT roadway. 17 Higher ADT Off Track Preservation US 280 3 miles to east 17,000 ADT, >10 years old Westbound outside lane Tenth mile sections Duplicate Lee Road 159 CCPR F,E, CIR F,E, and HIR High BR thin overlays. 9
Higher ADT Off Track Preservation NCAT Pavement Test Track Washington Oregon California Nevada Idaho Utah Arizona Montana Wyoming Colorado New Mexico Pre-2012, 2012, 2015 North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Wisconsin Missouri Arkansas (upper pennisula) Illinois Mississippi Louisiana Indiana Kentucky Tennessee Alabama (DOT & DEM) Ohio Georgia Vermont New Hampshire Massachusetts New York Rhode Island Connecticut Pennsylvania New Jersey Delaware West Maryland North Carolina South Carolina Florida Maine FHWA Private Sector Sponsors Cargill Deicing Technology FP2 Kraton Polymers Modified Asphalt Solutions Oldcastle Materials Polycon Manufacturing Seneca Petroleum Shell Sulfur Solutions Trinidad Lake Asphalt 10
NCAT Pavement Test Track Washington Oregon California Nevada Idaho Utah Arizona Montana Wyoming Colorado New Mexico Pre-2012, 2012, 2015 North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Wisconsin Missouri Arkansas (upper pennisula) Illinois Mississippi Louisiana Indiana Kentucky Tennessee Alabama (DOT & DEM) Ohio Georgia Vermont New Hampshire Massachusetts New York Rhode Island Connecticut Pennsylvania New Jersey Delaware West Maryland North Carolina South Carolina Florida Maine FHWA Private Sector Sponsors Cargill Deicing Technology FP2 Kraton Polymers Modified Asphalt Solutions Oldcastle Materials Polycon Manufacturing Seneca Petroleum Shell Sulfur Solutions Trinidad Lake Asphalt NCAT+MnRoad National Experiment Washington Oregon California Nevada Idaho Utah Arizona Montana Wyoming Colorado New Mexico Pre-2012, 2012, 2015 North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Wisconsin Missouri Arkansas (upper pennisula) Illinois Mississippi Louisiana Indiana Kentucky Tennessee Alabama (DOT & DEM) Ohio Georgia Vermont New Hampshire Massachusetts New York Rhode Island Connecticut Pennsylvania New Jersey Delaware West Maryland North Carolina South Carolina Florida Maine FHWA Private Sector Sponsors Cargill Deicing Technology FP2 Kraton Polymers Modified Asphalt Solutions Oldcastle Materials Polycon Manufacturing Seneca Petroleum Shell Sulfur Solutions Trinidad Lake Asphalt 11
NCAT+MnRoad National Experiment Dr. R. Buzz Powell, PE Assistant Director & Test Track Manager 277 Technology Parkway Auburn, AL 36830 Phone: (334) 844-6857 Cell: (334) 750-6293 Email: buzz@auburn.edu Web: www.pavetrack.com Twitter: www.twitter.com/pavetrack 24 12