Section 4132. Special Backfill Material

4132.01 DESCRIPTION.

A. Sources.

· Crushed Stone,

· Crushed PCC, crushed composite pavement, or reclaimed HMA (per Materials I.M. 210),

· Mixtures of gravel, sand, and soil, or

· Uniformly blended combinations of the above.

B. Do not place reclaimed HMA below high water table.

4132.02 GRADATION.

Meet the gradations of Table 4132.02-1:

Table 4132.02-1: Gradation Requirements for Special Backfill Material

Material	Gradation
Crushed Stone, Crushed PCC, or Crushed Composite Pavement	No. 30 in Aggregate Gradation Table
Gravel or Gravel Blends with Crushed Stone, PCC or Composite	No. 31 in Aggregate Gradation Table
Reclaimed HMA	Nominal top size of 2 inches