This chapter addresses the common practices and test methods (standards) that are used for certification programs for the basic material categories of soils and aggregate, asphalt mixture, and ...

Certain aspects of quality control testing hasn't changed all that much over the decades. While it is necessary and extremely important, when working with various Departments of Transportation (DOT) ...

The use of recycled materials in asphalt has been an ongoing topic of conversation in our industry. On the one hand, recycled materials can benefit both our roadways and the environment if done ...

The literature review presented in this chapter describes the DOT certification programs and how they were developed in different ways, in part due to the flexibility found in 23 CFR 637B. Included is ...