ABSTRACT
Defining the composition of an asphalt mixture forms the principal requirements for a conventional specification or for recipe requirements in other specifications. However, they can also be part of a mixture design procedure, as in the Marshall design with binder content and voids in mineral aggregate, or as compliance requirements for a performance-based specification, particularly those based on laboratory tests. If the performance has been demonstrated for a particular asphalt mixture with specific components, it is generally simpler and quicker to check that the same mixture has been supplied than to repeat the performance tests.
