Laboratory Testing

Full-service soil and materials testing laboratories are maintained at several of our office locations.  We participate in and are approved and/or accredited by: the Division of the State Architect (DSA) Laboratory Evaluation and Acceptance (LEA) Program, the Proficiency Sample and Laboratory Inspection Programs of the Cement and Concrete Reference Laboratory (CCRL) (a National Institute of Standards and Technology research associate program), the Caltrans Reference Sample Program, the AASHTO Materials Reference Laboratory (AMRL) Proficiency Testing and Accreditation Programs, and the United States Army Corp of Engineers (project specific basis).

Computerized Direct Shear Testing Machine for Determination of Shear Strength of Soils

SOIL Atterberg Limits California Bearing Ratio (CBR) Cement Stabilization of Soils Collapse Potential Density and Moisture Content Direct Shear Expansion Index Hydroconsolidation Lime Stabilization Maximum Density/Optimum Moisture One Dimensional Consolidation Permeability (Hydraulic Conductivity) Plasticity Index Resistance "R" Value Sand Equivalent Sieve and Hydrometer Analysis Soil Corrosivity Analysis and Testing Specific Gravity Swell Triaxial Compression of Cohesive Soils Unconfined Compression

Mechanical Hammer for Maximum Density/Optimum Moisture Tests

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ASPHALT CONCRETE Asphalt Content by Ignition Method Asphalt Content by Nuclear Gauge Asphalt Content by Solvent Extraction Bulk Specific Gravity of Compacted    Specimens and Core Samples Compaction of Laboratory Samples    (California Kneading Compactor and Marshall Method) Maximum Density Moisture Content Stability and Flow, Marshall Apparatus Stability, Hveem Apparatus Theoretical Maximum Specific Gravity (Rice Method) Asphalt Aggregate Abrasion, L.A. Rattler Centrifuge Kerosene Equivalent Clay Lumps and Friable Particles    in Aggregate Cleanness Value of Coarse Aggregate Crushed Particles Durability Index Flat and Elongated Particles in Aggregate Organic Impurities in Fine Aggregate Sand Equivalent Sieve Analysis Soundness, Sodium Sulfate    or Magnesium  Sulfate Specific Gravity (coarse and fine) Unit Weight of Aggregate

Ignition Oven, for Asphalt Content Tests

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MASONRY Concrete Masonry Units Absorption Compressive Strength Compressive Strength of Masonry Cores Face Shell Shear on Masonry Cores Moisture Content Shrinkage Specific Gravity and Unit Weight Mortar and Grout Compressive Strength of Grout Samples Compressive Strength of Mortar Cylinders Masonry Prisms Compressive Strength of Grouted Prisms Brick/Paving Units Absorption and Saturation Coefficient Compression Strength Efflorescence Modules of Rupture In-Situ Shear on Brick

Forney QC-400 for Compressive Strength tests of Cylinders, Beams, Prisms, and Masonry Units

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MOBILE ASPHALT LABORATORY The Earth Systems group of companies can provide full service, remote-location asphalt testing from a fully-equipped mobile asphalt laboratory.  The mobile lab is self-contained with a portable generator, water supply, and wastewater holding tank.
Tests that can be provided include: Marshall flow and stability Maximum theoretical specific gravity In-place density/percent relative compaction Sieve analysis Oil content by extraction Specific gravity - aggregate and core samples Core sampling	In addition to the laboratory, our personnel are fully trained in asphalt placement techniques, sampling procedures and reporting.  We have provided full time contract compliance testing, with the ability to give in-place density, theoretical maximum density, percent relative compaction, oil content and gradations at the site. This allows for rapid correction of deficiencies.