DEVELOPMENTS TO THE NOTTINGHAM ANALYTICAL DESIGN METHOD FOR ASPHALT PAVEMENTS. SIXTH INTERNATIONAL CONFERENCE, STRUCTURAL DESIGN OF ASPHALT PAVEMENTS, VOLUME I, PROCEEDINGS, UNIVERSITY OF MICHIGAN, JULY 13-17, 1987, ANN ARBOR, MICHIGAN

Abstract

The method of pavement developed at the University of Nottingham uses theoretical analysis and mechanical properties of pavement materials in a procedure which is implemented by use of computers. The techniques have been described to previous conferences as they have evolved, so the present paper provides a summary, together with a description of developments which have taken place recently. Amongst the detailed matters considered is the improvement to the subgrade strain criterion, to take account of differing deformation resistance offered by various asphalt mixes and the elastic stiffness which should be assigned to granular subbase. Comparisons are made between the results of the Nottingham method and that recently proposed by the UK Transport and Road Research Laboratory. New consideration has been given to the appropriate terminal pavement condition for purposes and the concept of design temperatures has been evolved. While the Nottingham method has, quantitatively, been developed for British conditions, it can be used for other environments and an example is given of how it has been adapted for North America.