PowerPoint PresentationTitle: PowerPoint Presentation Author: Dave Van Deusen Keywords:...
Transcript of PowerPoint PresentationTitle: PowerPoint Presentation Author: Dave Van Deusen Keywords:...
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Pre-Research Pays Off
May 17, 2016
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Project background
Existing sections
Asphalt mixtures
Construction sequence and schedule
Sensors
Mixture production and paving
Construction QM technology
Questions?
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National Pavement Preservation Study
Development of a National Cracking Test
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Primary objective - validate laboratory cracking tests by establishing correlations between test results and measured cracking performance in real pavements within a very short timeframe
A suite of laboratory cracking tests will be performed by MnDOT and NCAT
Identify those tests that best correlate with field cracking
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One project, two locations, two experiments
Pavement preservation, and
Cracking performance
Cracking sponsor states: ◦ Alabama, Florida, Illinois, Michigan,
Minnesota, New York, North Carolina, Oklahoma, and Wisconsin
3-year national pooled-fund project
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The objective is to validate laboratory cracking performance tests by way of correlations between those results and observed cracking performance in the test sections
MnDOT is doing this in conjunction with 4 other states and with materials similar to those they typically use
Other requirements include getting at least 6 years of good structural performance and mixture durability.
This is not an exhaustive mix study
We only have 8 sections and mixes to deal with
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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
Indiana West Virginia
New Jersey
Connecticut
Massachusetts
Maine
Rhode Island
Virginia
New Hampshire Michigan (upper pennisula)
2015 Track Research Sponsors
FHWA
FP2
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Companion project to NCATs 2015 CG work near Opelika, AL
MnROAD Focus on low-temperature cracking ◦ Fatigue, and top-down cracking potential
Samples of mixture obtained during production will be made available to other agencies and laboratories
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MnDOT personnel will observe, photograph, monitor, video tape, and collect samples from selected construction activities performed under this Contract
Letting date: Friday, May 20, 2016
Plan holders ◦ Total 18
◦ Primes 6
◦ Subs 8
◦ Suppliers 3
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MnROAD Mainline
MnROAD Low Volume Road
Cracking Group Cells 16-23
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MnROAD Mainline Asphalt Sections ◦ Cells 16 through 23, ~4,500 feet available
Constructed 2008, MnROAD Phase II efforts ◦ 5 in. asphalt over 12 in. aggregate base
Two types of asphalt mixture
Two types of aggregate base
Remove and replace upper 18 in
Construct new base and asphalt ◦ minimize the variable of support for low-temp
cracking experiments
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~100 in/mi
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Very little transverse cracking
Some wheel path cracking, possible top-down
Primary distresses: ◦ Wheelpath cracking (surface)
◦ Longitudinal centerline and shoulder joint deterioration, some raveling
Performance history of both MnDOT network and Cells 16-23 suggests future direction for further low-temp cracking experiments
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CELLS and DESIGN DETAILS TRANSVERSE CRACKS
CELL HMA PG BASE LO SEV MED SEV
16 WMA 58-34 RPCC 1 (6') 1 (24')
17 WMA 58-34 RPCC/Agg 2 (3') -
18 WMA 58-34 RAP - -
19 WMA 58-34 Agg - -
20 HMA w/30% RAP 58-28 Agg 1 (8') -
21 HMA w/30% FRAP 58-28 Agg 1 (4') -
22 HMA w/30% FRAP 58-34 Agg - -
23 WMA 58-34 RRB - -
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New BAB Construction
0
5
10
15
20
25
30
35
0 2 4 6 8 10
Pavement Age, years
To
tal
Tra
ns.
Ck
. R
ati
ng
PG -34 Pen Graded
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MnROAD/NCAT CG Project 19
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Class 5Q
In place material
MnROAD/NCAT CG Project 20
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Contractor selects and procures materials
Submit materials to NCAT, who will perform mix designs ◦ Contractor may determine order in which designs are
performed
8 weeks required to complete all 8 mix designs ◦ Mix design JMFs will be provided as they become
available
Project team reviews JMF
Bituminous Unit issues MDR
JMF and MDR go to Contractor
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Recycled Asphalt Shingles (RAS) ◦ Required in 2 of 8 mixes
◦ Must be Manufacturing Waste Scrap Shingles (MWSS)
Recycled Asphalt Pavement (RAP) ◦ Required in all 8 mixes, varying percentages
◦ RAP from existing mainline test cells not permitted
Target % Asphalt Binder Replacement (ABR):
◦ 𝐴𝐵𝑅(%) = 𝑅𝑒𝑐𝑦𝑐𝑙𝑒𝑑 𝑏𝑖𝑛𝑑𝑒𝑟 𝑓𝑟𝑜𝑚 𝑅𝐴𝑃+𝑅𝐴𝑆
𝑇𝑜𝑡𝑎𝑙 𝑎𝑠𝑝ℎ𝑎𝑙𝑡 𝑏𝑖𝑛𝑑𝑒𝑟∗ 100
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RECYCLED
MATERIAL
CELL
NO
MIX
DESIGNATION
MAX AGG
SIZE (mm) ABR % RAS
Air voids at
Ndesign Ndesign
MSCR
BINDER
GRADE
COMMENTS
16 SPWEB540L 12.5 30-40 Yes
4.0 80 PG 64S-22
17 SPWEB540L 12.5 20-30 4.0 80 PG 64S-22
18 SPWEA540L 12.5 15-25
No
4.0 80 PG 64S-22
19 SPWEB530L 12.5 15-25 3.0 100 PG 64S-22
20 SPWEB540A 12.5 25-35 4.0 80 PG 52S-34
21 SPWEB540C 12.5 15-25 4.0 80 PG 58H-34
22 SPWEB540C 12.5 15-25 4.0 80 PG 58H-34 3139 modified
for limestone
23 SPWEB540I 12.5 10-20 4.0 80 PG 64E-34
Highly
modified
asphalt binder
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Types of cracking to be investigated ◦ Low temperature a “given”
◦ Top-down very likely
◦ Fatigue also possible
Production mixture testing ◦ Low temp: SCB-IL, DCT-MN, SCB-MN
◦ Top down, fatigue: Overlay Tester, BB Fatigue
◦ ME Design: E*
◦ Additional: BBR mix beams (related study)
◦ Loose mix, cores
◦ Fracture energy test data analysis: both FE and FI
24
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Cell Mix
Designation Binder (MSCR)
Pay Item 2360.501 TYPE SP 12.5 WEARING COURSE MIXTURE ...
16 SPWEB540L PG 64S-22 (5,H)
17 SPWEB540L PG 64S-22 (5,I)
18 SPWEB540L PG 64S-22 (5,L)
19 SPWEB530L PG 64S-22 (5,M)
20 SPWEB540A PG 52S-34 (5,B)
21 SPWEB540C PG 58H-34 (5,C)
22 SPWEB540C PG 58H-34 (5,E)
23 SPWEB540I PG 64E-34 (5,F)
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Item No. Item Unit
2331.609 BITUMINOUS MATERIAL FOR MIXTURE TON
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Starting Date: July 11, 2016 Completion Date: October 15, 2016
Removals Mix Design
Test Roll Production trials
Break for Sensor Work
Base Construction
Test Roll
Break for Sensor Work
Paving
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Bituminous millings
Aggregate base ◦ Haul and stockpile material at MnROAD Stockpile
Area
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Produce and place 25 tons uniform trial mixture ◦ Sampling and volumetric testing ◦ Evaluate placement
Various locations @ MnROAD site
◦ Ensure JMF requirements are met ◦ No density testing
If JMF requirements satisfied proceed to test cell production
If JMF requirements not met make adjustments
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Project includes special provisions for: QUALITY MANAGEMENT - PAVER MOUNTED THERMAL PROFILE (PMTP) METHOD QUALITY MANAGEMENT SPECIAL – INTELLIGENT COMPACTION (IC) METHOD
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Dave Van Deusen, P.E.
Project Manager - MnROAD
651-366-5524 (office)
612-968-4187 (cell)