STAHL SHEAFFER ENGINEERING
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Geotechnical Services - Lab Testing
SOIL
ASPHALT MIXTURE
Moisture Content (AASHTO T265 / ASTM D2216 )*
Moisture Content- Rapid Method - Speedy (AASHTO T-217 / ASTM D4944)
Plasticity Index (AASHTO T89 & T90 / ASTM D4318 ) | Plastic Limit (PL) & Liquid Limit (LL)*
Specific Gravity (AASHTO T100 / ASTM D854 )*
Dry Preparation of Samples (AASHTO R-58 / ASTM D421)*
Hydrometer & Sieve Anaylsis (AASHTO T-88 / ASTM D422)*
Grain-Size Analysis Granular Soil Materials (through #200) (AASHTO T-311)
Sieve Analysis with Wet Sleeve (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 Natural Density for Oversize Particles (ASTM D4718)
Moisture-Density Relations of Soil-Lime Mixtures
Unit Weight of Soil (Direct Measure with and without wax) (AASHTO T-233 / ASTM D7263)
Nuclear Density and Moisture Gauge for Soil (AASHTO T-310 / ASTM D6938)*
Soil Classification (AASHTO M145 / 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 (ASTM T-193 / ASTM D1883 ) (CBR)*
Direct and Residual Shear Testing (AASHTO T-236 / ASTM D3080)*
Unconsolidated– Undrained 3pts (Q, UU) (AASHTO T-296 /
ASTM D2850 )*
Consolidated– Undrained 3pts (R, CU) (AASHTO T-297 / ASTM D4767 )*
Consolidated - Drained 3pts (CD) (ASTM D7181)
Dynamic Cone Penetrometer (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 / ASTM TxDOT)
Chloride Content in Soil (AASHTO T-291 / ASTM TxDOT)
SOIL-CEMENT
Unconfined Compressive Strength of Soil-Cement Mixture (ASTM D1633)
Moisture-Density Relationship of Soil-Cement Mixtures (AASHTO T-134 / ASTM D558)*
Unconfined Compressive Strength of Soil-Lime Mixture (AASHTO T-220 / ASTM D5102)
Wet-Dry Durability of Soil-Cement Mixture (AASHTO T-135 / ASTM D559)
Freeze-Thaw Durability of Soil-Cement Mixture (AASHTO T-136 / ASTM D560)
Asphalt Content by Ignition Method (AASHTO T-308 / ASTM D6307 )*
Specific Gravity & Density (AASHTO T-166 / ASTM D2726) (SSD Specimens, Gmb)*
Maximum Theoretical Specific Gravity (AASHTO T-209 / ASTM D2041 ) (Rice, Gmm)*
Thickness of Asphalt Cores (ASTM D3549 )
Preparation of Asphalt Mixtures - Prepared by Marshall Apparatus (AASHTO R68 / 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-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
Aggregate Gradation (AASHTO T-27 / ASTM C136 )*
Material Passing No. 200 - Sieve/ Decantation (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)
ROCK
Compressive Strength of Rock Cores (Method C without D4543 preparation) (ASTM D7012)*
Slake Durability (ASTM D4644)
CONCRETE
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)
*Accredited
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Survey Project Manager
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