PROMONTORY SEAL COAT DEMONSTRATION PROGRAMCity of Greeley - Promontory Seal Coat Demonstration...
Transcript of PROMONTORY SEAL COAT DEMONSTRATION PROGRAMCity of Greeley - Promontory Seal Coat Demonstration...
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PROMONTORY SEAL COAT DEMONSTRATION PROGRAM
Pat Hill & John WoodCity of Greeley – Engineering Division
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The experts
City of Greeley Pavement
Maintenance Staff
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City of Greeley - Promontory Seal Coat Demonstration Program 3
0102
03
Greeley has always been proactive with the use of
seal coating for maintenance practices
Develop a test program to compare the different seal coats used in Colorado in one location
COMPAREEnsure all test sections receive
similar traffic loadings and atmospheric effects, on a
“typical” segment of road with uniform distresses
HOMOGENEITY
Perform monthly evaluations of each section, and make the
findings available to the public
RESULTS
PROJECT GOALS
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City of Greeley - Promontory Seal Coat Demonstration Program 4Aerial photographs courtesy of Andy Gilmoreand the Greeley Police Department
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City of Greeley - Promontory Seal Coat Demonstration Program 5
HISTORY
Project began as a discussion between Pat Hill and John Wood. We saw the need to compare the many new technologies and products in pavement preservation
CONCEPTION
A plan was developed to create a pilot project to evaluate seal coat materials and processes, placed on the same road at the same time exposed to the same conditions
PLANNING
After test site was identified, the test sections were awarded on a “first come, first serve” basis.
We wanted to avoid having duplicate sections
LOCATION
Vendors were to supply material and labor at no cost to the City. NCTC was selected to provide
traffic control
VENDORS
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City of Greeley - Promontory Seal Coat Demonstration Program 7
SITE ORGANIZATION & DETAILSDivided into 14 total sections, each 100’ long and 31’ wide
SECTIONSA 20’ long segment of road between sections 9 and 10
was selected to act as a control
CONTROLFeatures a wide variety of products and applications
from multiple vendors
VARIABILITY
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SECTIONSAPPLIED
The sections were applied between July and October of 2016. The 11 separate closures required excellent communication with local residents
TIMELINE
Andale• 1 – HA5 High Density
Mineral Bond
Foothills Paving• 4 – ¼” Chip Seal• 5 – Type II Slurry Seal• 10 – 2X ⁄3 8” Chip Seal
Vance Brothers• 6 – USS Type III• 7 – GSB-88• 9 – USS Type II
DISSCO• 8 – RS-90
COBITCO• 2 – Reclamite (.05 gal/SY)• 3 – Reclamite (.07 gal/SY)
SealMaster• 11 – Master Seal• 12 – PMM• 13 – Liquid Road• 14 – Color Pave HD 500
Products
Vance Brothers
DISSCO
Foothills Paving
Andale Construction
SealMaster
COBITCO
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City of Greeley - Promontory Seal Coat Demonstration Program 9
SECTIONS BY APPLICATION TYPE
28%
MACHINE PLACED
36%
SPRAY/HANDWORK
36%
SPRAY ONLY
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City of Greeley - Promontory Seal Coat Demonstration Program 10
NUMBER OF SECTIONS PER MATERIAL TYPE
0
3
6
CHIP SEAL SEAL COATFINE AGGREGATESEAL COAT
REJUVENATE
45
12
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City of Greeley - Promontory Seal Coat Demonstration Program 11
COBITCOReclamite
Foothills PavingType II Slurry
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DISSCORS-90
SealMasterLiquid Road
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Vance BrothersUSS Type II
SealMasterColor Pave HD 500
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EVALUATION& ANAYLSIS
To analyze the performance of the seal coat products, staff developed a process to evaluate the seal coats and publish the findings over the next two years
PERFORMANCE
There are 9 criteria upon which each section is evaluated on a 1 through 5 scale
CRITERIA
Evaluations are consistently conducted by multiple members of the SIM staff around the 1st of each month
INSPECTION
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MONTHLYINSPECTOR
EVALUATION
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SEAL COATWEBSITE• Evaluations are made available to the public
through the Keep Greeley Moving website
• From there, anyone can find pictures/videos of construction, information about the material, and
• http://keepgreeleymoving.com/2016-seal-coat-test/
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MOVINGFORWARD
Project is approximately two thirds through its life cycle, with final evaluations planned for the Fall of 2018. After two full Winters and one Summer of wear, each section has started to show some degree of deterioration
CURRENTLY
Greeley will continue to monitor each section closely as snow plow damage, weathering, and wear continue to degrade the seal coat materials
Ongoing Analysis
Moving forward. Where do we see the project after a year and a half? In five years?
NEXT STEPS
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5 different interlayers 150’x48’ sections Fabric installed priorto leveling course
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Pavement Interlayer Demo
• Section 1: Huesker – “FRC-40”• Section 2: Tensar – “GPO-50”• Section 3: Tencate – “MPG4”
• Section 4: Tencate – “M-50”• Section 5: Owens Corning – “TruPave”
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City of Greeley - Promontory Seal Coat Demonstration Program 19
Fiber Reinforced Asphalt Demo• “Forti-Fi” installed on
22nd St – 28th Ave to 35th Ave• 2,363 lbs. of fiber & 2,393 tons of asphalt
• “Nilex” installed on 6th Ave – 18th St to 22nd St
• 1,784 lbs. of fiber & 1,956 tons of asphalt
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ANY QUESTIONS?THANK YOU!