4128.01DESCRIPTION
Aggregate of the following types: • Crushed stone, or • Crushed PCC, if approved by the Engineer.
4128.02GRADATION
Meet the requirements of Gradation No. 13a of the Aggregate Gradation Table, Article 4109.02.
4128.03QUALITY
The requirements of Table 4128.03-1 apply to individual virgin aggregates when crushed to a 3/4 inch or 1 inch nominal size for testing: Table 4128.03-1: Stabilization Material Quality Maximum Macadam Percent Allowed Test Method Quality Abrasion
50
C Freeze
AASHTO T 96 Office of Materials Test Method No. Iowa 211, Method C
Source: Iowa Standard Specifications for Highway and Bridge Construction, 2023 Edition. Pages 1094–1094 of 1,288.