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ASTM, AASHTO, DOT, and Other Accredited Testing
CTL|Thompson is accredited for a variety of ASTM, AASHTO, DOT, and other testing for soils, concrete, asphalt, aggregate, and other materials.
If you are interested in scheduling any of the testing below please contact us.
Scope of Accreditation For: | Standard | Description |
|---|---|---|
Soil | ASTM D854 | Specific Gravity of Soils |
Soil | ASTM D1140 | Amount of Material in Soils Finer than the No. 200 (75-um) Sieve |
Soil | ASTM D1557 | Moisture-Density Relations of Soils Using a 10 lb [4.54 kg] Rammer and an 18 in. [457 mm] Drop |
Soil | ASTM D1883 | The California Bearing Ratio |
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