SECTION 20110 BALLAST AND WALKWAY AGGREGATE SECTION 20110 BALLAST AND WALKWAY AGGREGATE . B. Ballast/walkway aggregate shall be crushed stone broken by the crusher and . 2-1/2 inch 100 2 inch 90-100 Gradation and Size | Pavement Interactive Gradation and Size. . or gradation, of an aggregate is . Table 1. Calculations for a 0.45 Power Gradation Curve Using 19.0-mm (0.75-inch) Maximum Aggregate Size; P-209 Crushed Aggregate Base Course - State of Michigan clean, sound, durable particles of crushed stone, crushed gravel, . added to produce the correct gradation. . P-209, Crushed Aggregate Base Course Page 4 of 5 Service Online
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