[Pavement Construction Testing and Observations]

Construction Consulting:

• Recommendations regarding specifications for placement of aggregate base course material
  
• Recommendations for subgrade stabilization
  
• Perform asphalt mix design verifications for both Superpave and Marshall mix designs
  
• Perform evaluations of existing pavements to identify areas of distress and provide recommendations for testing and repair

Construction Testing:

• Observe proofrolling of the subgrade prior to placement of base course materials
  
• Perform laboratory tests on representative samples of aggregate base course materials to verify materials are in accordance with the requirements in the project specifications
• Perform field density tests on aggregate base course to measure the percent compaction and verify stone thicknesses meet the project requirements
• Provide NCDOT Roadway Inspector certified individuals to aid the contractor in developing roller pattern during initial stages of asphalt paving, and to perform density tests on in-place asphalt pavement to measure percent compaction. Testing can be performed by coring of the asphalt and determining the specific gravity and thickness of each specimen, or by the nuclear gauge density method
• Perform laboratory testing on asphalt samples to determine bulk specific gravity, asphalt content, and aggregate gradation