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 Tables 4132.02-1 and 4132.02-2:

Table 4132.02-1: Gradation Requirements for Special Backfill Material

Material	Gradation (Aggregate Gradation Table, Article 4109.02)
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

Table 4132.02-2: Gradation Requirements for Reclaimed

HMA Used for Special Backfill Material

Material	Gradation
Reclaimed HMA	Nominal top size of 2 inches