Various tests, including quality, freeze-thaw, and alkali-silica reactivity (ASR) are performed on aggregates used for road and bridge construction in Illinois. These tests quantify the physical characteristics of each aggregate product from each source. Development and evaluation of all statewide aggregate related policies, procedures and specifications are continually modified to keep them current with new technologies and test procedures. Aggregates focuses on: natural sands, gravels, crushed gravels, crushed stone, steel slag, air cooled blast furnace (ACBF) slag, recycled crushed concrete, rip rap, reclaimed asphalt pavement (RAP) used as aggregate.
Clicking a hot link below will take you directly to the approved/qualified list for the material/product referenced in the title.
Below you will find information regarding the process and how to get materials approved.
Clicking a hot link below will take you directly to the policy memorandum with specific information explaining the process to become a producer/supplier for the material listed in the title.
There are currently no laboratory or field test procedures on the internet.
Clicking a hot link below will take you directly to the form listed in the title. These forms are provided as tools to ensure that the correct data is supplied to IDOT when submitting samples.
Below are reference materials to assist in getting materials approved and IDOT guidelines.
The following documents are provided as a tool to assist with identifying materials and/or ensuring that correct data is supplied to IDOT.
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There is currently no material specific information
Required technician training for Mixture Aggregate Technician and Aggregate Technician is described on the Lake Land College website.