4118.01DESCRIPTION
Aggregate of the following types: • Crushed Stone, • Gravels for which 75% or more of the particles retained on the 3/8 inch sieve have at least one fractured face as defined in Materials I.M. 305 (the fractured face requirement shall only apply to bedding material placed under Primary or Interstate roadways), or • Crushed PCC, if approved by the Engineer.
4118.02GRADATION
Meet the requirements for Gradation No. 3 of the Aggregate Gradation Table, Article
4109.02. Restrictions on the No. 200 sieve do not apply
4118.03QUALITY
The requirements of Table 4118.03-1 apply to individual virgin aggregates: Table 4118.03-1: Coarse Aggregate Quality (Virgin Material) Maximum Percent Test Coarse Aggregate Quality Allowed Method Abrasion
50
C – Freeze (a)
AASHTO T 96 Iowa DOT Materials Laboratory Test Method No. 211,
Method C For crushed PCC, meet requirements of Materials I.M. 210.
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