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At Construction Material Testing, Inc., we offer a complete suite of field and laboratory soil testing services in accordance with ASTM, AASHTO, and DOT standards, including: construction soil testing services Proctor compaction testing ASTM D698 soil test nuclear density soil compaction geotechnical soil investigation site classification testing CBR testing for pavement design ✅ Field Testing Services: Standard Penetration Testing (SPT) during geotechnical drilling Nuclear Density Testing (ASTM D6938): Measures in-place moisture and compaction Sand Cone & Drive Cylinder Testing (ASTM D1556, D2937): Verifies soil density in trenches or limited-access areas Dynamic Cone Penetrometer (DCP) Testing: Quick field assessment of soil strength ✅ Laboratory Soil Testing Services: Proctor Compaction Testing (ASTM D698 / D1557): Determines optimal moisture and maximum dry density Atterberg Limits (ASTM D4318): Measures soil plasticity and shrink/swell potential Sieve Analysis & Hydrometer (ASTM D422): Grain-size distribution for classification California Bearing Ratio (CBR, ASTM D1883): Used for pavement design and subgrade evaluation Permeability Testing (ASTM D2434, D5084): Assesses water flow and drainage capabilities Consolidation & Shear Strength Testing: Used in settlement and stability analysis