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Iowa DOT Developmental Specifications for Recycled Asphalt Shingles

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Iowa DOT Developmental Specifications for Recycled Asphalt Shingles. Scott Schram, Ph.D., P.E. Iowa DOT Bituminous Engineer 5/26/2010. Outline. Background Specification Development Upcoming Projects. RAS Processing Models. RAS Processing Models. RAS Processing Models. - PowerPoint PPT Presentation
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Page 1: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 2: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles

BackgroundBackground Specification DevelopmentSpecification Development Upcoming ProjectsUpcoming Projects

Page 3: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 4: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 5: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 6: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 7: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles

DOT

DNR

OSHA

IDED

Page 8: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles

1.1. Source requirementsSource requirements

2.2. Material requirementsMaterial requirements

3.3. End User requirementsEnd User requirements

Page 9: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
Page 10: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles

Raw Shingle MaterialRaw Shingle Material Pre-processing = sorting, removal of wastePre-processing = sorting, removal of waste

Asbestos remediation (testing, rejection of Asbestos remediation (testing, rejection of loads)loads)

Processed RASProcessed RAS GradationGradation

Deleterious Content (<1.5%)Deleterious Content (<1.5%)

Moisture (for information only)Moisture (for information only)

Page 11: Iowa DOT  Developmental Specifications for Recycled Asphalt Shingles
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