Materials Testing
HWA operates an advanced 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) and the US Army Corps of Engineers (USACE), 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.
Materials Testing Projects

Bellevue, WA

Edmonds, WA

Bellevue, WA

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.
Please contact us to inquire about our full testing capabilities.