ASPHALT: INNOVATION & SOLUTIONS. Bill Rosener Executive Vice President Asphalt Paving Association of Iowa
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1 ASPHALT: INNOVATION & SOLUTIONS & Bill Rosener Executive Vice President Asphalt Paving Association of Iowa
2 Iowa Asphalt Industry is the Best in the USA
3 What we offer: Project Consultation Design, Methods, Planning Lunch and Learns Expert Advice Website Open Houses Attend and learn, or feature your project Facebook : Whatever you need we can help!
4 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!
5 Today s Agenda New Binder / Mix Levels Asphalt Interlayer Perpetual Pavement Design I-Pave Design Program I-Save LCCA
6 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
7 -34 C -29 F -28 C -18 F
8 1 BUMP 2 BUMPS 58 C 136 F C 147 F C 158 F M ESALS 10M ESALS 30M ESALS
9 1 BUMP 2 BUMPS 3 BUMPS 8-28 S H V E 58 C 136 F 58 C 136 F 58 C 136 F 58 C 136 F <1M ESALS > M ESALS mph >10M ESALS >15 mph >10M ESALS <15 mph
10 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 mph** 58-28V = Very High Traffic >10M ESALS or 15 mph 58-28E = Extremely High Traffic >10M ESALS and 15 mph
11 Overlays 4 and Secondary Projects
12 New Construction, CIR, Rubblization, Crack and Seat, FDR, Overlays>4
13 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.
14 Gyration Changes ESALS Old Gyrations New 4% Air 100K 68 (@ 3% Air) K 68 (@ 3.5% Air) 50 1M M M M M
15 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
16 Typical Bid Item: HMA Standard Traffic (ST) Surface, ½, PG 58-28S or 64-22S
17 Asphalt Interlayer
18 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
19 City of Waterloo
20 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*****
21 Perpetual Pavements
22 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.
23 Perpetual Pavements } 100 mm to 150 mm Pavements requiring only periodic surface renewal SMA, OGFC or Superpave Zone Of High Compression High Modulus Rut Resistant Material Max Tensile Strain Flexible Fatigue Resistant Material Pavement Foundation
24 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
25 Perpetual IDOT Interstates I-80 Jasper, Johnson and Cedar Co. Constructed
26 Perpetual IDOT Highways Cedar Rapids Highway 100
27 Perpetual County Roads Dallas County F31
28 Perpetual City Streets Ashworth Road West Des Moines 23 years old
29 2016 Des Moines Full-Depth Pavements: Court Ave : E 14 th St E 18 th St 31 st St Woodland - Center 42 nd St Forest to University
30 City of Des Moines Perpetual County Roads E. Court Ave. Dallas County F31
31 Perpetual County Roads City of Des Moines E. Court Ave. Dallas County F31
32 Perpetual County Roads City of Des Moines E. Court Ave. Dallas County F31
33 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
34 INNOVATIVE DESIGN AIDES
35
36 I-Save Input Screen
37 I-Pave and I-Save Report Body (How?)
38 APAI Awards Program City Of Woodward Paving Project City of Woodward, V & K Engineering and Grimes Asphalt And Paving 2015 Municipal Paving Program Winners 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 Applications Due Oct 15!
39 Thank yous and Credits Dr Chris Williams, ISU Dr. Ashley Buss, ISU Dr. Scott Schram, IDOT Dave McDermott, City of Council Bluffs
40 QUESTIONS?
41 Thank you! APAI is at your service
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