Aggregates
Our accredited laboratories provide comprehensive testing of coarse and fine aggregates, including gradation analysis, specific gravity measurements, and overall quality evaluations. With these capabilities, we ensure that aggregates meet project specifications and perform reliably in the field.
We also support aggregate suppliers in fulfilling their responsibilities under the Illinois Department of Transportation Aggregate Gradation Control System (AGCS), providing guidance, testing, and documentation to maintain compliance and optimize material performance. By combining laboratory precision with practical field insight, we help both suppliers and contractors deliver materials that meet the highest standards of quality and consistency.
We can also assess stone and gravel deposits of private landowners to determine viability for commercial mass production.
​​
Aggregate Lab Services​
Reducing Samples of Aggregate to Testing Size
(AASHTO R 76 / ASTM C702)
Materials Finer Than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing
(AASHTO T 11 / ASTM C117)
Bulk Density ("Unit Weight") and Voids in Aggregate
(AASHTO T 19 / ASTM C29)
Sieve Analysis of Fine and Coarse Aggregates
(AASHTO T 27 / ASTM C136)
Specific Gravity (Relative Density) and Absorption of Fine Aggregate
(AASHTO T 84 / ASTM C128)
Specific Gravity and Absorption of Coarse Aggregate
(AASHTO T 85 / ASTM C127)
Resistance to Abrasion of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
(AASHTO T 96 / ASTM C131)
Specific Gravity of Mineral Filler on Asphalt Mixture Designs (Mineral Filler)
(AASHTO T 100 / ASTM D854)
Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate
(AASHTO T 104 / ASTM C88)
Plastic Fines in Graded Aggregates and Soils by Use of the Sand Equivalent Test
(AASHTO T 176 / ASTM D2419)
Total Moisture Content of Aggregate by Drying
(AASHTO T 255 / ASTM C566)
Uncompacted Void Content of Fine Aggregate (Influenced by Shape, Texture, and Grading)
(AASHTO T 304 / ASTM C1252)
Resistance to Abrasion by Micro-Deval (Coarse Aggregate)
(AASHTO T 327 / ASTM D6928)
Clay Lumps and Friable Particles in Aggregate
(ASTM C142)
Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate
(ASTM D4791)
Determining the Percentage of Fractured Particles in Coarse Aggregate
(ASTM D5821)
See AASHTO Resource website for all accredited test methods.