MATERIALS TESTING

Materials Testing

HWA maintains a Full-Service Soil and Construction Materials Testing Lab as well as a Mobile Asphalt Testing Lab. We test Soils, Asphaltic and Portland cement concrete, aggregates, geotextiles, and additional materials in support of site evaluation, structural design, and construction quality control.

Our laboratory is accredited by the American Association of State Highway and Transportation Officials (AASHTO), we participate in eight different performance assessment sample programs for soils, asphalt, and concrete through AMRL and CCRL, and our team of highly skilled laboratory staff hold several certifications from ACI and NICET.

Our primary testing lab generally conducts testing in support of soils characterization and field testing and inspection while the secondary testing lab conducts those tests mostly associated with geotechnical design.

Order Tests

Materials Testing

Choose from one of the two forms available to assign the required testing.

The Geotechnical & Inspection form is for samples obtained from geotechnical explorations with Index, Strength and Permeability options presented, CMT samples with testing options for Soil, Aggregate, Asphalt and Concrete.

The Chain of Custody may be used where project requirements call for sample tracking to be documented.

Please inquire if your required test method is not listed in the relevant forms. If you have not previously submitted samples or are unsure of your project details (project name, project number) send a form completed with all available information and we’ll help complete project setup.

Geotechnical & Inspection Request Form

Chain of Custody Form

Materials Testing Projects

IDIQ Materials Testing & Inspection Services

Bellevue, WA

Edmonds On-Call Materials Testing Services

Edmonds, WA

Materials Testing Ichijo USA

Bellevue, WA

Logboom Park Materials Testing

Kenmore, WA

Typical Services Include:

Density

Rice Density

Proctor Tests

Atterberg Limits

Sand Equivalent

Moisture Content

Compression Testing

Sieve and Hydrometer Analysis

Specific Gravity and Absorption

Bitumen Extraction and Aggregate Gradation

Secondary testing specialties are comprised of:

Direct Shear

Incremental Consolidation

Triaxial Strength Testing (UU, CU)

Hydraulic Conductivity and Infiltration

HWA also provides Advanced Testing and Treatability Testing.

Our Materials Testing Services Include:

Soil Laboratory Tests

Atterberg Limits (ASTM D4318)
California Bearing Ratio (ASTM D1883)
Consolidation Test Incremental Loading (ASTM D2435)
Grain Size Analysis (ASTM D422, D6913, D7928)
Moisture/Density Relationship (ASTM D698, D1557)
Moisture Content (ASTM D2216)
One-Dimensional Swell (ASTM D4546)

Organic Content Test (ASTM D2974)
Permeability Tests (ASTM D5084)

Relative Density (ASTM D4253 / D4254)
Shelby Tube Extrusion and Sample Description
Specific Gravity Test (ASTM D854)
Minimum Soil Resistivity (AASHTO T 288)
pH of Soils for Corrosion Testing (AASHTO T 289)
Strength Testing
Unit Weight
Visual Soil Classification

Aggregate Quality Tests

Clay Lumps and Friable Particles (ASTM C42)
Degradation Test (WSDOT 113)
Fracture Face Count (ASTM D5821)
Grain Size (ASTM C136, C117)
Los Angeles Abrasion (ASTM C131, C535)
Organic Impurities (ASTM C40)
Percentage of Material Passing #200 Sieves (ASTM C117)
Sand Equivalent (ASTM D2419)
Specific Gravity Tests
Unit Weight by Dry Rodding (ASTM C29)

Concrete and Masonry Tests

Compression Testing of Concrete Cores (ASTM C42, C513)
Compression Testing of Concrete Cylinders (ASTM C39)
Compression Testing of Grout and Mortar Specimens (ASTM C109)

Concrete Beam Flexural Strength Test (ASTM C78)

Asphaltic Concrete Tests

Asphalt Content by Ignition (ASTM D6307)
Bulk Specific Gravity and Density - SSD Method (ASTM D2726)
Bulk Specific Gravity and Density - Wax Method (ASTM D1188)
Preparation of Asphalt Mix Specimens Using Marshall Apparatus (ASTM D6926)
Marshall Stability and Flow Determination (ASTM D6927)
Percent Air Voids in Compacted or Open Bituminous Mixtures (ASTM D3203)
Rice Density (ASTM D2041)

Geosynthetics Tests

Geomembrane to Soil Shere (per point) (ASTM D 5321)
Shear/Peel Strength Test (ASTM D 437)

Rock Tests

Abrasion Resistance (ASTM C 535)
Ethylene Glycol Accelerated Expansion
Riprap Soundness (ASTM D 5240)
Splitting Tensile Strength of Rock Cores (ASTM 3967)
Unconfined Compressive Strength of Rock Cores
(ASTM D 2938)