LABORATORY TESTING

CCI performs  testing of soil and rock materials at our in-house laboratory facility which provides space for soil classification and testing; sample set up and preparation; and storage of drilling equipment, soil samples and various field and laboratory equipment and supplies.

Our laboratory is accredited through the AASHTO Accreditation Program (AAP)  and is also accredited by the State of California, Division of the State Architect, LEA #194.  As part of our commitment to excellence and quality, our testing equipment is maintained and operated  by our highly trained and qualified technical staff.  Our laboratory test procedures conform to ASTM standards and the equipment receives annual quality assurance calibration. The outsourced tests listed below are performed by Cooper Testing Laboratory in Palo Alto, California and by other qualified local testing laboratories.

Tests performed in-house include:

• Moisture Content (D2216)
• Visual Classification (ASTM D2488)
• Atterberg Limits (ASTM D4318)
• Modified Proctor Compaction (ASTM D1557)
• Grain Size Finer than #200 (ASTM D1140)

Outsourced Tests:

• Direct Shear (ASTM D3080)
• Triaxial Compression (ASTM D2850)
• R-Value (CALTRANS 301)
• Corrosion : (Resistivity-ASTM G57, pH - ASTM G51, Chlorides - CALTRANS 422, and Sulphates - CALTRANS 417)
• Coarse and Fine Aggregate Durability (CALTRANS 229)
• Permeability (ASTM D2434)