MATERIAL GROUP 001
- 1 - 02/15/00
Aggregates are preliminarily accepted at the source based on quality and gradation
Quality approval is based on a series of samples taken by District Bureau of
Materials inspectors and tested by the Bureau of Materials & Physical Research.
Gradation approval is by District Bureau of Materials gradation tests of processed
products according to the manual for aggregate inspection or by the Bureau of
Materials & Physical Research Policy Memorandum "Aggregate Gradation Control
System (AGCS)" found in the Bureau of Materials & Physical Research Manual of
Test Procedures for Materials.
Aggregate is accepted from sources appearing on the approved list of aggregate
sources. Evidence of acceptance is by tickets from an approved source indicating
producer, and IDOT gradation. The producer should also be encouraged to
specify the contract information on the ticket.