MnROAD Phase-III Research Ideas Available Test Cells

Benjamin Worel June 2014

Future Idea/Priorities – Need to Balance

Products vs Long Range Projects?

National vs Local Needs?

Funding?

Good Fit for MnROAD?

Daily Operations?

Tie to other test APT faculties? Partnerships – Partner Needs?

Expected Benefit/Product?

15

MnROAD

Ideas

Customer Needs?

A long-term accelerated pavement testing

facility that gives researchers a unique,

real-life laboratory to study and evaluate

the performance of materials used in

roadway construction.

MnROAD Office of Materials and Road Research

Interstate-94

Existing

Westbound

A long-term accelerated pavement testing

facility that gives researchers a unique,

real-life laboratory to study and evaluate

the performance of materials used in

roadway construction.

MnROAD Office of Materials and Road Research

Interstate-94

“Mainline”

Westbound

A long-term accelerated pavement testing

facility that gives researchers a unique,

real-life laboratory to study and evaluate

the performance of materials used in

roadway construction.

MnROAD Office of Materials and Road Research

Low Volume

Road

Low Volume Road MnROAD 5-axle Semi

80,000 Inside Lane = 5 days/week

Outside Lane Environmental

PCC ~ 300,000 ESALs

HMA ~ 200,000 ESALs

Interstate Mainline I-94 WB Public Traffic

18,900 (1994) : 29,700 (2013) AADT

12.5% (1994) : 13% (2013) HCAADT

PCC = ~ 1.2 Million ESALs/year

HMA = ~ 0.8 Million ESALs/year

MnROAD Traffic Loadings

I-94

ByPass

~ 25%

ESALS

MnROAD Test Cells

Layout and Designs Mainline / Low Volume Asphalt / Concrete / Aggregate 3,5,10 Year Designs

Cell are ~600 feet 500 foot Cell 2-50 foot transitions

Cell Availability for 2016 Research Years Pavement Life

MnROAD Test Cells

Mainline and LVR Design Subgrade Year Built Distance HMA Distress – Rutting, Deflection, Roughness, Cracking PCC Distress – Roughness, Cracking, Faulting, Deflection, Joint % Research Years Pavement Life

Low

Medium-Low

Medium

Medium-High

High

MnROAD Phase II Major Research

MnROAD Phase II Major Research

MnROAD Phase II Major Research

Other Initiatives Include Warm mix asphalt (WMA)

Effect of drainage on joint performance Open graded aggregate base (OGAB)

Roller compacted concrete

2014 Prioritize – Best Fit

TRB

Peer Exchange

Subcommittees

Pooled Fund

Development

2015 Funding – Designing

TRB

Pooled Fund

Refinement

Subcommittees

Designs

2016 Letting

Construction

Research

2013 Collect Ideas

MEO

TERRA

Industry

States

CTS

Infrastructure

Council

2016 – 2021? Phase-III

2014 Prioritize – Best Fit

TRB

Peer Exchange

Subcommittees

Pooled Fund

Development

2015 Funding – Designing

TRB

Pooled Fund

Refinement

Subcommittees

Designs

2016 Letting

Construction

Research

2013 Collect Ideas

MEO

TERRA

Industry

States

CTS

Infrastructure

Council

2016 – 2021? Phase-III

September 1st Settle on Ideas

MnROAD Research Direction Balanced Between

MnDOT Road Research / Specialty Offices Materials Advisory Working Groups Technical Working Grouops Material Engineers

LRRB Partners National PCC and HMA Working Groups 2014 Peer Exchange MnROAD Subcommittees

Flexible – Rigid – Pavement Preservation Groups

TERRA

2016 Idea Survey – Responses (66 as of 4pm May 22, 2014)

(List after MnROAD Subcommittee Initial Review)

WWW.Pooledfund.org

Consultant, 2

Government, 38 Industry, 17

University, 7 Other, 2

Survey Details Copies Printed Out

Broken into General Unbound - Aggregate Base/Subgrade Flexible Rigid Pavement Preservation

Development Survey Discussed at MnROAD Subcommittees Top Half - Bottom Half – New Ideas Re-Survey

Peer Exchange Tasks Tour MnROAD

Have Lunch Break into Subgroups

Review Printed Lists – What works for MnROAD and is a national need Prioritize the lists picking the top 3 ideas noting the others that might

be close

Present top 3 ideas to the group Do they support them?

Break into Subgroups Develop written problem statements on the top 3

Present problem statements to the group Discussion / Input

MnROAD Tour Questions?

WWW.Pooledfund.org

Whitetopping Design

TPF-5(165) Pooled Fund National design 14 Cells (1997, 2004, 2008) + around the state

Observations Learned the important factors – accelerated testing

Thickness Panel size HMA condition and seasonal behavior Importance of bond Importance of sealing

Benefits Positive Design for HMA Full depth repairs Possible option if alternate bids become standard

Full Depth Reclamation Road Science Partnership

3 Cells (mainline) 1 Cell (LVR)

Observations 2.75” Interstate surface on engineered FDR Engineered emulsion provides a balance stiffness and flexibility.

Benefits Design method for HMA Full depth repairs Design method for distressed pavements Sustainable practice

PCC Surface Characteristics (Rehab) TPF-5(134) Pooled Fund

Diamond Grinding Study - LVR to Mainline Traditional, Innovative, Ultimate, Whisper, ….)

Observations Noise/Durable/Safety Improvements have been documented Materials and Construction are starting to utilize Working with the environmental groups Cost are becoming more competitive with greater use

Benefits MnROAD, 94 Clearwater, 52 S. Airport, 35 Duluth Noise/Durable/Safety Good for areas where no room for noise walls Other states are requesting our MnDOT spec

Effect of Drainage on Joint Performance Original Concrete Cells Observations – deterioration (high traffic)

None when PASB used Some when Class-5 / well sealed joints / edge drain High amount when Class-5 / no edge drains

Observations – deterioration (low volume)

If sealed class-5 is not as destructive If not-sealed class-5 can develop joint damage

(Distress occurred with out significant joint faulting) (confirmed by similar pavements throughout Minnesota)

Benefits Importance of Drainable bases Importance of joint sealing Effect of Traffic

Recycled Unbound Materials

TPF-5(132) Pooled Fund Base Material Study

4 Cells – (100% PCC, 50% PCC, 100% RAP, Class-5)

Observations All three sections performing well as control

Extensive lab testing

Benefits Better understanding of the seasonal material behavior

Inputs for future pavement designs

Modified MnDOT Granular Base Spec

Use of a greater percent of PCC in the base 75%

Free Draining Aggregate Base

Used at MnROAD Mainline Cell-6 Limestone

Observations Limestone crushed Loss of support Designed to be both drainable and stable => Contractor liked

Benefits Prevention of water damage (HMA - PCC Joints) Improved construction efficiency Needs to be revisited

Implements of Husbandry

TPF-5(148) Pooled Fund Effects of farm equipment for roadways 3 Cells – (HMA 7 and 9 ton and thin PCC)

Observations More damage in the afternoon More damage with roads without shoulders Larger equipment tends to show greater damage than a 5-axle semi Equipment manufactures are moving towards smaller tanks

Benefits Wisconsin is implementing local meetings to stress communication of

the issues, use of one-way roads, morning travel, road improvements Potential for high savings of the local roadway system

Low Temperature Cracking TPF-5(132) Pooled Fund

National mix test and specification HMA cells and other state roadways

Observations Fracture Energy we are able to measure Changes noticed for

Aggregate Type Aggregate Gradation Size Binder Grade Binder Modification Air Voids Use of Recycle

Benefits Fracture energy key to thermal cracking but also all cracking Give engineers more insight in the materials they select Help eliminate the #1 reason we rehab roads in Minnesota

Warm Mix Asphalt

Base asphalt used at MnROAD 6 Cells (mainline) – Evotherm 3G

Observations First to demonstrate its use in Minnesota MnDOT regular specification used with little change Contractor Plant and paving operations were smooth

Benefits Reduction of mixing and compaction temperatures Compaction aid Future aging reduction

Acid Modification

Partnership (FHWA, Innophos, Mathy) 3+ Cells (LVR) - PG58-34

PPA PPA + SBS SBS

Observations All three cells paved the same Excellent performance – no cracking – no rutting – similar ride

Benefits Lower cost modification

Permeable/Porous Pavements

Potential Applications

Park & Ride Lots

Local Access Roads

Roundabout Aprons

Emergency Pull-off Areas

In lieu of retention ponds

Observations for both HMA/PCC

Good pavement durability

Voids remain open (traffic and maintenance)

Maintained (2-3 times/year)

Run-off and Water Quantity benefits

Traffic Safety (Noise and Spray)

Less Frost Depth

Permeable HMA Pavement

MPR-6(024) Single State 2 Cells (Sand – Clay Subgrade)

Observations 2008 MnROAD First (MnDOT, Contractor) Held up to freeze/thaw Good Performance (rutting, raveling, no cracks)

Benefits MnDOT Spec Demonstrated construction Demonstrated performance

Pervious PCC Pavement

MPR-6(027) Single State 2 cells (Sand – Clay Subgrade) 1 cell (overlay)

Observations Progression of technology Construction process Held up to freeze/thaw Good Performance (raveling, cracks)

Benefits MnDOT Spec Demonstrated construction Demonstrated performance Construction – Industry certification classes

MnROAD – Non Pavement Use

Intelligent Transportation Systems (ITS)

Pavement Marking (Striping)

60 inch Plastic Culverts

Roadside Vegetation Studies

Weigh in Motion Technology Support

Homeland Security Drills

AGCO Corp. Machine Testing

State Patrol Accident Reconstruction

Fuel Miner – Fleet Coordination

Site and District Snowplowing

WIM Technology Support/Calibration, Truck Instrumentation