MnDOT Road Research Update Maureen Jensen Benjamin Worel TRB January 17, 2013

MnDOTRoad Research Update

Maureen Jensen

Benjamin Worel

TRB January 17, 2013

MnDOTRoad Research Update - Outline

TERRA MnROAD International Pavement

Engineering Meeting at TRB International Exchanges

TERRA formed in 2004 Helped develop Phase-II Government, industry and academia members

MnROAD Benefits◦ Attracts key public, industry, academic partners

contributions◦ Participation in future initiatives- better results,

implementation

Transportation Engineering and Road

Research Alliance

TERRA Activities Research and Implementation

◦ Roundabouts, Concrete Overlays, Porous Asphalt, Engagement

◦ Funded $653,000 projects, Tomas Wiennerholt MN Visit Communication and Outreach

◦ 220 People TERRA Research Conference – St Paul◦ TERRA Innovation Series – Houghton◦ Webinars

Fact Sheets

History◦Phase I (1994-2006)◦Phase II (2007-present)◦Phase III (~2016)

Ongoing Monitoring◦Performance Data◦Sensors◦Database / Data Release 2.0

Completing Phase-II Research Studies

2012/2013 Construction 2016 Effort

MnROAD

2012 MicroSurfacing - Cell 1 6” HMA over 33” Class-4 (1993)

◦ Severe transverse & Longitudinal wheel path (2006) Right lane:1½ inch mill & fill PG 52 - 34

GoalFind a better

“cheap fix” for worn out pavements

MicroSurfacing - June 2012

◦3 Layer System tack coat / scratch coat / final surface

◦Type II Granite ◦6% Kraton polymer modified asphalt

instead of 3% post added latex ◦PG 49-34 Base asphalt

instead of typical PG 64-22

(initially tried at MnROAD in 2006)

MicroSurfacing Ride Results Before Micro

◦ Right lane 126 in/mi ◦ Left lane 190 in/mi

After Micro◦ Right lane 95 in/mi ◦ Left lane 96 in/mi

September @ 3 months ◦ Right lane 100 in/mi

(21% improvement)◦ Left lane 99 in/mi

(48% improvement)

Beginning to Plan for 2016 Working with Research Partners & Customers

MnDOT LRRB TERRA FHWA

Continue to Develop Partnerships◦ Interested in your input

MnROAD Phase-III

Ground Penetrating Radar FHWA – Tom Yu Norway – Anne Lalague MnDOT – Shongtao Dai

LTA – Experiences and Implementation Swedish mining road test sections International Design Comparison Swedish Road Maintenance Performance

Standard and the Web-PMS tool

International Pavement Engineering Meeting at TRB

(Highlights - Sunday 12:00-2:00)

Tomas Wiennerholt (3 week visit – Nov 2012) Ben Worel (3 week visit – June 2013)

◦ BCRRA Conference International Flexible Design Comparison

◦ Norway – Sweden – Denmark Visits MnROAD Research and Operations Low Temperature Cracking investigation Warrantees, FWD quality control, stabilization, WIM,

HVS Pervious Pavements, Traffic Speed Deflectometer, climate

change

International Pavement Research Exchange