Laboratory

Our laboratory is certified by the American Association of State Highway and Transportation Officials (AASHTO) and complies with internationally recognized ASTM standards.

The AASHTO accreditation program recognizes the competency of a testing laboratory in construction materials testing by assessing both the equipment and the staff’s abilities. The accreditation process is often long and arduous, however, Geotechnical & Environmental Services, Inc. (GES) has proudly been AASHTO certified for the last 20 years.

GES’ AASHTO accredited lab provides the following lab testing:

Soil Testing

  • ASTM D421    Dry Preparation of Soil Samples
  • ASTM D422    Particle Size Analysis of Soil
  • ASTM D698    Laboratory Compaction of Soil Using a 5-lb. Rammer
  • ASTM D854    Specific Gravity of Soil
  • ASTM D1557  Laboratory Compaction of Soil Using a 10-lb. Rammer
  • ASTM D2216  Laboratory Moisture Content of Soil & Rock
  • ASTM D2217  Sampling for Test
  • ASTM D2435  One-Dimensional Consolidation Properties of Soil Laboratory Determination of Moisture Content of Soil.
  • ASTM 2487     Classification of Soils for Engineering Purposes
  • ASTM D3080 Direct Shear Test of Soils Under Consolidated Drained Conditions
  • ASTM D4318  Determining the Liquid Limit of Soil
  • ASTM D4318  Plastic Limit of Soil
  • ASTM D4643  Moisture Content of Soil by Microwave Oven Method
  • ASTM D4959  Moisture Content of Soil by Direct Heating Method
  • ASTM D5321  Determining the Coefficient of Soil by the Direct Shear
  • ASTM D5333  Standard Test Method for Measurement of Collapse Potential of Soils
  • ASTM D5607  Direct Shear Strength Tests of Rock Specimens
  • ASTM G57      Field (and Lab) Measurement of Soil Resistivity Using the Wennar Four-Electrode Method

Aggregate Testing

  • ASTM C29     Unit Weight of Aggregate
  • ASTM C40     Organic Impurities in Sands for Concrete
  • ASTM C88     Soundness of Aggregates by Use of Sodium Sulfate or   Magnesium Sulfate
  • ASTM C117   Amount of Material Finer 0.075-mm Sieve in   Aggregate
  • ASTM C127   Specific Gravity and Absorption of Coarse Aggregate
  • ASTM C128   Specific Gravity and Absorption of Fine Aggregate
  • ASTM C136   Sieve Analysis of Fine and Coarse Aggregate
  • ASTM C142   Clay Lumps and Friable Particles in Aggregate
  • ASTM C535   L.A. Abrasion Test
  • ASTM C566   Total Moisture Content of Aggregate by Drying
  • ASTM C702   Reducing Field Samples of Aggregate to Testing Size
  • ASTM C2419 Sand Equivalent Test
  • ASTM C2844 R-Value Test
  • ASTM D75    Standard Practice for Sampling Aggregates | Portland Cement Concrete Testing
  • ASTM C617   Capping Cylindrical Concrete Specimens
  • ASTM C1231 Use of Unbonded Caps for Concrete Cylinders

Masonry

  • ASTM C109     Compressive Strength of Mortar
  • ASTM C780     Evaluation of Mortar for Plain & Reinforced Unit   Masonry
  • ASTM C942     Compressive Strength-Grouts-Preplaced Aggregate | Concrete
  • ASTM C1019   Sampling and Testing of Grout

Asphalt Testing

  • ASTM D1188  Bulk Specific Gravity of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens
  • ASTM D1559  Resistance to Plastic Flow of Bituminous Mixtures Using Marshall Apparatus
  • ASTM D2041  Maximum Specific Gravity of Bituminous Paving Mixture
  • ASTM D2172  Quantitative Extraction of Bitumen from Bituminous Paving Mixtures
  • ASTM D2726  Specific Gravity of Compacted Bituminous Mixtures
  • ASTM D3203  Percent Air Voids in Paving Mixtures

Concrete

  • ASTM C31   Making & Curing Concrete Test Specimens in the Field
  • ASTM C39   Compressive Strength Cylindrical Concrete Specimens
  • ASTM C42   Obtaining and Testing Drilled Cores of Concrete
  • ASTM C138 Unit Weight, Yield, and Air Content of Concrete
  • ASTM C143 Slump of Hydraulic Cement Concrete
  • ASTM C172 Sampling Freshly Mixed Concrete
  • ASTM C173 Air Content Freshly Mixed Concrete-Volumetric Method
  • ASTM C192 Making & Curing Concrete Test Specimens in the Lab
  • ASTM C495 Compressive Strength Lightweight Insulating Concrete