This practical guide starts with a survey of the types of site and the asphalt properties which are required. Various external influences which may affect the relative importance of some properties are addressed, and the interplay of sites and external is considered. Asphalt mixture types and their properties are reviewed, largely as defined in the EN 13108 series but subdivided into further categories, and into maximum nominal coarse aggregate sizes using EN 13043 basic set plus set 2 sizes.
Guidance is given, including using flowcharts, of the different mixtures that are suitable for each situation. In some cases a range of choices or mixtures with different degrees of suitability is offered. The guidance covers surface course, binder course and base, but with more focus on the surface course where the external influence is most significant. The site and external influence combinations on which a mixture can be used successfully are also given.
The book is primarily intended for those who select asphalt on an occasional basis, such as architects or housing developers, but could be of use to other engineers with limited experience. It is also useful as an educational textbook for those studying asphalt technology.
About the Author: Cliff Nicholls was until recently a Principal Research Scientist and Senior Academy Fellow at the Transport Research Laboratory. He is, or has been, a Fellow or Member of five professional institutions and a liveryman of the Worshipful Company of Paviors.
He was also the convenor of the Comité Européen de Normalisation task group responsible for test methods for asphalt mixtures from 2000 until 2015. He is author of Asphalt Mixture Specification and Testing, and the editor of Asphalt Surfacings, also published by Taylor & Francis.
Arthur Hannah has held senior management positions in the asphalt industry over 45 years, with considerable experience in site inspections and the resolution of problems in the asphalt production, surfacing and quarrying industries, and in setting up quality management systems. He recently completed a term as President of the Institute of Asphalt Technology.
