Materials and Research

Materials and Research

The department works on testing and researching soil or materials utilized for highway and construction projects. The main research areas include asphalt and concrete pavement studies, plus ride quality and measurement of ride numbers. Materials testing may be conducted on a variety of products such as: asphalt binders, aggregates, geotextile fabrics, traffic marking paint, soils, cement, fly ash, glass beads for traffic marking paint and concrete for strength.

State Owned and Optioned Gravel Sources

The NDDOT manages a number of gravel sources through ownership or by means of an option to purchase materials. State managed sources may be listed in construction plans. If a contractor wishes to exercise the Department's option to purchase materials under the terms and conditions described, please notify the Gravel Prospecting Coordinator. A timeline for the intended use is also requested.

Contact Staff:

• Phone: 701-328-6905
• E mail: Gravel Prospecting Coordinator

Manuals

• Field Sampling & Testing Manual

Approved Pavement Marking Paint and Glass Beads

• Approved Pavement Marking Paint and Glass Beads

Resources

• Transportation Research Library
• Materials Reporting - Concrete Cylinders Login
  • Materials Reporting User Guide
• Asphalt Mix Design Guidance
• Asphalt Mix Design

Technical Certification Program

• Technical Certification Program

Qualified Laboratory Program

• Qualified Lab Manual

Calibration Procedures: Select a Form No 1 Coarse Sieves No 1A Fine Sieves No 2 Drying Oven No 3 LA Machine No 4 Conical Mold & Tamper No 6 Manual Soil Hammer No 6A Mechanical Soil Hammer No 7 Soil Mold No 8 Liquid Limit Device No 9 Grooving Tool No 9A Flat Grooving Tool No 11 Straightedges No 17 Compression Machine Blocks No 18 Breaking Head No 20 Marshall Molds No 21 Manual Marshall Hammer No 21A Marshall Hammer No 22 Water Bath No 23 SPG Vacuum System No 36 Caliper No 37 Thermometers No 38 Slump Cone No 39 Sand Equivalent No 40 Mechanical Shaker No 42 Type A Air Meter No 43 Type B Air Meter No 44 Gyratory Compactor No 45 Concrete Molds No 46 Unit Weight Measure No 47 Balances, Cells & Rings No 48 SPG Coarse Aggregate No 49 Specific Gravity Flask No 52 Gyratory Molds No 55 Volume Measure

Other Certification and Training Opportunities for Contractors and Consultants

• Certification and Training