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Bituminous

The recent increased emphasis on quality in the asphalt paving industry by federal, state, and local government agencies has resulted in many states adopting a new system of quality control of bituminous materials in the field. Under this new system, the contractor is now responsible for duties previously conducted by agency field and agency plant inspectors – making the tasks of developing qualified personnel and implementing the necessary laboratory facilities increasingly complicated. SK Geotechnical assists in determining if plant-produced bituminous mixtures meet the project specifications.

Asphalt pavement coring
Asphalt pavement coring

Asphalt pavement at the Colstrip bus barn
Colstrip Bus Barn

Placement and compaction of an asphalt parking lot
Billings Clinic LDRP Expansion

Field Testing Facilities

We have two mobile field testing laboratories for quality control testing of bituminous mixtures along with our in-house bituminous and aggregate trial mix laboratory. This laboratory is capable of conducting the following bituminous related tests.

  • Aggregate quality testing (percent crushed, spall, shale, etc.)
  • Asphalt extraction – American Society for Testing and Materials (ASTM) D 2172
  • Extracted aggregate gradations – American Association of State Highway and Transportation Officials (AASHTO) T30
  • Marshall density testing – ASTM D 2726
  • Marshall stability and flow – ASTM D 1559, AASHTO T245
  • Maximum theoretical (Rice) specific gravity – ASTM D 2041
  • Thickness and density of pavement cores – ASTM D 3549 and ASTM D 2726
  • Virgin aggregate gradations – ASTM C 13

A Commitment to Quality

Along with our skills and experience in pavement research, design, and materials testing, we have a fully implemented quality assurance program. Our highly trained laboratory and field staff are provided with modern calibrated equipment. Our test instruments are regularly checked and calibrated, using equipment traceable to the National Institute of Standards and Technology (formerly the National Bureau of Standards).

Our laboratory meets the requirements of ASTM D 3666, "Evaluating and Qualifying Agencies Testing and Inspecting Bituminous Paving Materials."

Meeting your Needs

Through our experience and knowledge, we provide high quality bituminous field testing services for the asphalt paving industry. We understand the importance that fast, accurate field test results have in contributing to the success of your project.