Recycled Asphalt Shingles in Hot Mix Asphalt

1
Recycled Asphalt Shingles in Hot Mix
Asphalt Case Studies of New State
Specifications and Implementation

• Bill Rosener
• Executive Vice President
• Asphalt Paving Association of Iowa

2
Introduction

• New guy on the job last year
• Credit to those that deserve it
• Scott Schram, IDOT Bituminous Engineer
• Dr. Chris Williams, ISU Associate Professor
• Waste Commission of Scott County
• APAI Contractors

3
Waste Commission of Scott Co. Shingle Grinding
Operation
4
RAS History in Iowa
5
APAI Role

• Facilitator between contractors and IDOT
• Three Open House Demonstrations in 2009
• Featured at Greater Iowa Asphalt Conference
• 500 Attendees
• Featured at six Regional Conference Meetings
• 200 Attendees
• Participate in this excellent webinar
• Three RAS Workshops in 2010 across Iowa
• Three Open House Demos planned for 2010

6
Recycled Shingles are Good for Asphalt

• High Asphalt Cement Content 30 by weight
• High grade aggregate
• Fibers
• Lime Dust (natural anti-strip)

7
McCarthy / Scott Co Waste Demo
8
McCarthy / Scott Co Waste Demo
9
McCarthy / Scott Co Waste Demo
10
Des Moines Asphalt / Polk CoRAS and WMA Demo
11
Des Moines Asphalt / Polk CoRAS and WMA Demo
12
Des Moines Asphalt / Polk CoRAS and WMA Demo
13
Determann Asphalt / IDOTDemo
14
Determann Asphalt / IDOTDemo
15
Determann Asphalt / IDOTDemo
16
Determann Asphalt / IDOTDemo
17
Marketplace Determines Feasibility

• Contractors see potential for cost savings
• Contractors see green benefits
• Contractors see risk (DNR / OSHA)
• IDOT sees benefits in lower prices and green
  initiative
• IDOT places specification burden on RAS suppliers
  thus allowing contractors to try using RAS before
  becoming recyclers themselves

18
Conclusions

• APAIs role is facilitator between contractors
  and public agencies including IDOT, county, city
  and consulting engineers
• IDOT is the rule maker for all of Iowa
• RAS is beneficial to asphalt
• The success of RAS will ultimately depend on the
  marketplace and regulatory agencies

19
Thank yous

• Scott Schram, IDOT Bituminous Engineer
• Dr. Chris Williams, ISU Associate Professor
• Waste Commission of Scott County
• APAI Contractors
• CMRA
• Dan Krivit, Foth Engineering

20
Questions?

• www.APAI.net