asphalt: innovation & solutionsiowa.apwa.net/content/chapters/iowa.apwa.net/file...innovation...
TRANSCRIPT
![Page 1: ASPHALT: INNOVATION & SOLUTIONSiowa.apwa.net/Content/Chapters/iowa.apwa.net/file...INNOVATION & SOLUTIONS Bill Rosener Executive Vice President Asphalt Paving Association of Iowa &](https://reader033.vdocuments.mx/reader033/viewer/2022050519/5fa326bf40f1f727a83a93ba/html5/thumbnails/1.jpg)
ASPHALT:
INNOVATION &
SOLUTIONS
Bill Rosener
Executive Vice President
Asphalt Paving Association of Iowa
&
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Iowa
Asphalt
Industry is
the Best in
the USA
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What we offer: Project Consultation
Design, Methods, Planning
Lunch and Learns
Expert Advice
Website www.apai.net
Open Houses
Attend and learn, or feature your project
Facebook : www.facebook.com/Asphaltiowa
Whatever you need…we can help!
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What’s New in Asphalt: Price of Asphalt is DOWN!
Use of Asphalt is INCREASING in Iowa Cities and Counties!
New Binder / Mix level Designations
New rehabilitation methods: Rock/Asphalt Interlayers
Full-Depth Reclamation
High-Performance Thin Overlays
Building more Perpetual Pavements
APAI Innovative Design/LCCA Aides
More Alternate Bids!
Darwin Larson!
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New Binder / Mix Levels
Asphalt Interlayer
Perpetual Pavement Design
I-Pave Design Program
I-Save LCCA
Today’s Agenda
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New Binder Bid Items
What are we changing?
1. How the High Temperature PG is Determined
2. How we select Binder Grades
Why are we changing?
“Bumping” the High Temp today is unrealistic
for modified binders
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-34°C
-29°F
-28°C
-18°F
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58°C
136°F
1M ESALS
58-28
10M ESALS
1 BUMP
64°C
147°F
64-28
30M ESALS
2 BUMPS
70°C
158°F
70-28
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58°C 136°F
<1M ESALS >45
58-28 S
1-10M ESALS 15-45 mph
1 BUMP
58°C 136°F
H
>10M ESALS >15 mph
2 BUMPS
58°C 136°F
V
>10M ESALS <15 mph
3 BUMPS
58°C 136°F
E
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New IDOT Binder “Bumping”
Designations
58-28S = Standard Traffic ≤ 1M ESALS and
>45 mph
58-28H = High Traffic >1M ESALS up to 10M ESALS or
15-45 mph**
58-28V = Very High Traffic >10M ESALS or
≤ 15 mph
58-28E = Extremely High Traffic >10M ESALS and
≤ 15 mph
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Overlays ≤ 4” and Secondary Projects
≤
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New Construction, CIR, Rubblization, Crack
and Seat, FDR, Overlays>4”
≤
≤
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New Mix Bid Items:
What are we changing?
Reducing the number of gyration levels from 7 to 3.
Standard
High
Very High
Why are we changing? Simplification. Most states have already moved to fewer gyration levels.
Iowa facilities do not experience 7 different mixtures of traffic loadings.
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Gyration Changes
ESALS Old Gyrations New Gyrations @ 4%
Air
100K 68 (@ 3% Air) 50
300K 68 (@ 3.5% Air) 50
1M 76 50
3M 86 75
10M 96 75
30M 109 95
100M 126 95
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Non-Primary Routes ◦ PG 64-22S may be substituted
Primary Routes ◦ PG 64-22S may be substituted for overlays ≤ 4” on
jointed PCC.
Keep Letter Designation
Sites where low temps < -22C
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Typical Bid Item:
HMA Standard Traffic (ST) Surface, ½”,
PG 58-28S or 64-22S
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Asphalt Interlayer
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ASPHALT INTERLAYER
A highly flexible, highly-polymerized,
impermeable hot mix asphalt interlayer
• Thin (1”) hot mix asphalt (HMA)
• Fine aggregate (readily available)
• Highly elastic polymer modified asphalt (PG 64-34)
• Overlay with a minimum of 3” traditional HMA
• Cost is +30%-40% of traditional HMA
• IDOT Specification 2303
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City of Waterloo
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ADVANTAGES OF
ASPHALT INTERLAYER
• Standard construction process
• Significantly delays reflective cracking longer than straight HMA overlays
• Only 30% more than Traditional HMA
• Impermeable interlayer protects pavement structure from moisture damage
• Lengthens pavement surface life (3-5 yrs+)
• 100% Recyclable
*****Perfect for Oralabor Road*****
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Perpetual Pavements
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WHAT IS PERPETUAL PAVEMENT?
According to “Perpetual Asphalt Pavements- A Synthesis” Perpetual pavement is an asphalt pavement designed and built to last longer than 50 years without requiring major structural rehabilitation or reconstruction, and needing only periodic surface renewal in response to distresses confined to the top of the pavement.
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Perpetual Pavements
SMA, OGFC or Superpave
} 100 mm to 150 mm
Zone Of High Compression High Modulus
Rut Resistant Material
Max Tensile Strain Flexible Fatigue Resistant Material
Pavement Foundation
Pavements requiring only periodic surface renewal
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Benefits of Perpetual Asphalt
Pavements Fast to Construct
Staged Construction
Economical
Environmentally Sustainable
Easy to Maintain and Repair
Never lose your curb line!
Smooth and Beautiful
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Perpetual IDOT Interstates I-80
Jasper, Johnson and Cedar Co.
Constructed 1962-64
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Perpetual IDOT Highways
Cedar Rapids
Highway 100
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Perpetual County Roads
Dallas County F31
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Perpetual City Streets
Ashworth Road
West Des Moines
23 years old
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• Court Ave : E 14th St –
E 18th St
• 31st St – Woodland - Center
• 42nd St Forest to University
2016 Des Moines Full-Depth
Pavements:
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Perpetual County Roads
Dallas County F31
City of Des Moines
E. Court Ave .
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Perpetual County Roads
Dallas County F31
City of Des Moines
E. Court Ave .
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Perpetual County Roads
Dallas County F31
City of Des Moines
E. Court Ave .
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Who Builds Perpetual
Asphalt Streets? City of Ames
City of Davenport
City of Des Moines
City of Council Bluffs
City of Mason City
City of Waverly
City of Cedar Rapids
City of Sioux City
City of West Des Moines
City of Waterloo
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INNOVATIVE
DESIGN
AIDES
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I-Save Input Screen
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Body (How?)
I-Pave and I-Save Report
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APAI Awards Program Municipal Paving
Program Award (Cities
< 10,000 pop.)
Metropolitan Paving
Program Award (Cities
> 10,000 pop.)
Consulting Engineer of
the Year Award
Innovative Project /
Design of the Year Award
City Of Woodward Paving Project
City of Woodward, V & K Engineering and
Grimes Asphalt And Paving
2015 Municipal Paving Program Winners
Applications Due Oct 15!
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Thank yous and Credits
Dr Chris Williams, ISU
Dr. Ashley Buss, ISU
Dr. Scott Schram, IDOT
Dave McDermott, City of Council Bluffs
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QUESTIONS?
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Thank you!
APAI
is at your service
515-233-0015
www.apai.net