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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BackgroundBackground Specification DevelopmentSpecification Development Upcoming ProjectsUpcoming Projects

DOT

DNR

OSHA

IDED

1.1. Source requirementsSource requirements

2.2. Material requirementsMaterial requirements

3.3. End User requirementsEnd User requirements

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)