TH 110 Project – CIR, DCT, IC, PMTP, & a Few Other Acronyms · TH 110 Project – CIR, DCT, IC,...
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TH 110 Project – CIR, DCT, IC, PMTP, & a Few Other Acronyms Tim Clyne, MnDOT MAAPT 64 th Annual Asphalt Conference Wednesday, December 6, 2017
Transcript of TH 110 Project – CIR, DCT, IC, PMTP, & a Few Other Acronyms · TH 110 Project – CIR, DCT, IC,...
TH 110 Project –CIR, DCT, IC, PMTP, & a Few Other Acronyms
Tim Clyne, MnDOT
MAAPT 64th Annual Asphalt Conference
Wednesday, December 6, 2017
PROJECT LOCATION
PROJECT DESCRIPTION
“Just” a Glorified Mill & Overlay CIR chosen to mitigate reflective cracking
Turn Lane Additions, Access Modifications
Box Culvert – Dakota County Trail
Drainage Improvements
Sign Replacements
Guardrail, ADA, Traffic Loops, etc.
Traffic Control – Full Directional Closures
CONSTRUCTION CONTRACT
A + B Letting (Pay Items + Time)
$9.57 million
S.M. Hentges & Sons, Inc. – Prime Contractor
McNamara Contracting, Inc. – Bituminous Paving
Midstate Reclamation & Trucking – CIR & Milling
MnDOT Oakdale Construction Office
ALPHABET SOUP
CIR = Cold In-Place Recycling
DCT = Disk-Shaped Compact Tension Test
IC = Intelligent Compaction
PMTP = Paver Mounted Thermal Profile
IHNIWTOM = I Have No Idea What This One Means
TYPICAL SECTION
CIR TRAIN
Water Truck
Pickup Machine+ Paver
Emulsion
Recycling Unit
Mill
Roller(not pictured)
(Courtesy Midstate Reclamation & Trucking)
SHOWTIME!
ESTABLISH ROLLING PATTERN
ESTABLISH ROLLING PATTERN
EMULSION APPLICATION RATE
THICKNESS CHECKS
GRADATION CHECK
PMTP RESULTS – HMA OVERLAY
Lift 1 - $102 Bonus Lift 2 - $668 Deduct
Each Lift: ~85% Coverage
IC RESULTS – HMA OVERLAYEach Lift: > 99% Coverage
CIR IC Results Not Yet Available
LIFT 2 FINAL COVERAGE
CMV
SPEED
TEMPERATURE
DCT RESULTS
Mix Design MnDOT Gf = 664 J/m2
Contractor Gf = 599 J/m2
Specification Gf = 450 J/m2
Production Mix proportions changed
from 24% Granite Sand / 0% Limestone Sand to 16% Granite / 8% Limestone Ave. Gf = 513 J/m2
~23% reduction
LESSONS LEARNED
CONSTRUCTION PLAN
CROSS-SLOPE CORRECTION
Variable Depth Milling
EQUIPMENT MANEUVERABILITY
SUMMARY
Project Selection – Existing Pavement Investigation
Design – Proper Construction Plan
Pay Attention to Details – CIR & Paving Operations
PMTP Data – Moderate Temperature Differential
IC Data – Valuable QC Data for Compaction
DCT Data – Mix Passed Fracture Energy Criteria
Great Teamwork & Communication
