Geotechnical Services - Lab Testing
* Indicates Accredited Test
  • Moisture Content (AASHTO T265 / ASTM D2216) * 
  • Moisture Content by Speedy Moisture Tester (AASHTO T-217 / ASTM D4944)
  • Plasticity Index | Plastic Limit (PL) & Liquid Limit (LL) (AASHTO T-89 & T-90 / ASTM D4318) *
  • Specific Gravity (AASHTO T100 / ASTM D854) *
  • Dry Preparation of Samples (AASHTO R-58 / ASTM D421) *
  • Hydrometer & Sieve Analysis (AASHTO T-88 / ASTM D422) *
  • Grain-Size Analysis of Granular Soil Materials (through #200) (AASHTO T-311) 
  • Sieve Analysis with Wet Sieve (ASTM D6913)
  • Wet Sieve (% passing #200) (ASTM D1140) *
  • Density & Unit Weight of Soil in Place by Sand-Cone Method (AASHTO T-191 / ASTM D1556)
  • Standard Proctor (AASHTO T-99 / ASTM D698) *
  • Modified Proctor (AASHTO T-180 / ASTM D1557) *
  • Correction of Unit Weight and Water Content for Soils Containing Oversize Particles (ASTM D4718)
  • Unit Weight of Soil (Direct Measure with and without wax) (AASHTO T-233 / ASTM D7263)
  • In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (AASHTO T-310 / ASTM D6938) *
  • Soil Classification (AASHTO M-145 / ASTM D2487) *
  • Description & Identification of Soils (Visual-Manual) (ASTM D2488) *
  • Unconfined Compression (AASHTO T-208 / ASTM D2166) *
  • 3D Consolidation (Triaxial Method)
  • Expansion Index (ASTM D4829)
  • California Bearing Ratio (CBR) (ASTM T-193 / ASTM D1883) *
  • Direct and Residual Shear Testing (AASHTO T-236 / ASTM D3080) *
  • Unconsolidated– Undrained (Q, UU, 3pts) (AASHTO T-296 /
    ASTM D2850) *
  • Consolidated– Undrained (R, CU, 3pts) (AASHTO T-297 / ASTM D4767) *
  • Consolidated - Drained (CD, 3pts) (ASTM D7181)
  • Dynamic Cone Penetrometer (DCP) (ASTM D6951) *
  • pH (AASHTO T-289 / ASTM D4972)
  • Soil Resistivity (AASHTO T-288 / ASTM G57 / G187) *
  • Organic Content in Soils by Loss on Ignition (AASHTO T-267 / ASTM D2974) *
  • Sulfate Content in Soil (AASHTO T-290 / TxDOT Tex-145-E)
  • Moisture-Density Relationship of Soil-Cement Mixtures (AASHTO T-134 / ASTM D558) *
  • Unconfined Compressive Strength of Soil-Cement Mixture (ASTM D1633)
  • Wet-Dry Durability of Soil-Cement Mixture (AASHTO T-135 / ASTM D559)
  • Freeze-Thaw Durability of Soil-Cement Mixture (AASHTO T-136 / ASTM D560)
  • Moisture-Density Relations of Soil-Lime Mixtures
  • Unconfined Compressive Strength of Soil-Lime Mixture (AASHTO T-220 / ASTM D5102)
  • Asphalt Content by Ignition Method (AASHTO T-308 / ASTM D6307) *
  • Bulk Specific Gravity (Gmb) using Saturated Surface-Dry (SSD) Specimens (AASHTO T-166 / ASTM D2726) *
  • Theoretical Maximum Specific Gravity (Gmm) (AASHTO T-209 / ASTM D2041) *
  • Thickness of Asphalt Cores (ASTM D3549)
  • Preparation of Asphalt Mixtures - Prepared by Marshall Apparatus (AASHTO R-68 / ASTM D6926) *
  • Marshall Stability & Flow of Hot Mix Asphalt (AASHTO T-245 / ASTM D6927) *
  • Percent Air Voids in Bituminous Paving Mixtures (AASHTO T-269 / ASTM D3203) *
  • Specific Gravity & Density Using Paraffin (AASHTO T-275 / ASTM D1188) *
  • Moisture Content of HMA by Oven (AASHTO T-329) *
  • Density of Bituminous Concrete In Place by Nuclear Methods (AASHTO T-355 / ASTM D2950) *
  • Aggregate Gradation (AASHTO T-27 / ​ASTM C136) *
  • Materials Finer Than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing (AASHTO T-11 / ASTM C117) *
  • Specific Gravity & Absorption (AASHTO T-84 & T85 / ASTM C127 & C128) *
  • Sand Equivalency (AASHTO T-176 / ASTM D2419)
  • Sieve Analysis of Extracted Aggregate (AASHTO T-30 / ASTM D5444) *
  • Moisture Content of Aggregate by Oven Drying (AASHTO T-255 / ASTM C566) *
  • Organic Impurities in Fine Aggregates for Concrete (AASHTO T-21 / ASTM C40)
  • Compressive Strength of Rock Cores (Method C without D4543 preparation) (ASTM D7012) *
  • Slake Durability (ASTM D4644)
  • Compressive Strength (AASHTO T-24 / ASTM C39)
  • Slump of Hydraulic-Cement Concrete (ASTM C143)
  • Air Content (Pressure Meter) (ASTM C231)
  • Making and Curing Concrete Test Specimens in the Field (ASTM C31)
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