The Materials and Tests Unit's Central Laboratory is located in Raleigh, NC and is comprised of 3 separate testing laboratories including Asphalt, Geomaterials, and Structural Materials.
has the responsibility of the design and approval of asphalt mixes for contract projects and maintenance; testing and approval of the materials used in asphalt mixes; testing and approval of mineral fillers, asphalt truck release agents and various asphalt additives; aiding in the development of specifications, test procedure manuals and training programs; participating in research as needed by the North Carolina Department of Transportation; running support tests for field projects; and performing Independent Assurance tests on all federally funded paving projects.
The Geomaterials Laboratory
has the responsibility of testing and providing data for natural, manufactured and recycled soil and aggregate products, establishing acceptance criteria, and ensuring that the acceptance criteria are met and will function as intended. Extensive assessment and training programs are provided for NCDOT employees and private industry consultants.
The Physical Testing Sub-section is responsible for determining and evaluating the physical quality of various materials used on the State Highway System. The Sub-section receives samples for testing from field inspectors, contractors, manufacturers and producers. The Sub-section also reviews and assigns all concrete mix designs used throughout the State in structures and pavement.
The Chemistry Testing Sub-section is responsible for determining and evaluating the Chemistry of various materials used on the State Highway System. The Sub-section receives samples for testing from field inspectors, contractors, manufacturers, producers, and other labs within the Unit.
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