The need for relatively simple test procedure based on mechanical properties of asphalt concrete has been apparent for many years. It is valuable to be able to use the mechanical/ functional properties in quality control and to relate asphalt layer properties to structural performance of bituminous layers. It is also essential that the test procedure takes in consideration the effect of production, laying and compaction of asphalt mixtures. The procedure must both be suitable for routine use and sufficiently reliable to be used in the specification for asphalt mixes. The use of mechanical properties in the specification of mixes will help in establishing relationship between mix design and pavement design and in turn to link specifications to performance. B VAG 2002] concerning performance or function is to define requirements in respect to asphalt layer or surface characteristics. The choice of the level depends on the agreement between client and contractor. An overview of the performance specification and evaluation of function-based contracts are presented in this paper. For the covering abstract see ITRD E135448.
Abstract