Paper 1: The results of comprehensive laboratory tests on asphalt paving mixtures with chrysotile asbestos are described. Paper 2: Data are presented on 1. progressive hardening and embrittlement of the asphalt cement with aging, 2. loss of adhesion of the asphalt cement to the aggregate with the resultant lower compressive strengths due to water displacement of the asphalt binder at the asphalt-aggregate interface, 3. progressive loss of water resistance of the asphalt cement as the asphalt hardens, and 4. progressive loss of the ability of the asphalt binder to readhere to the aggregate after displacement by water. Paper 3: The viscoelastic behavior of bitumens varies with film thickness. therefore, for correlation of laboratory testing with field performance in bituminous pavements, it is important to match the geometry of testing to geometry of end use.

The urgent need for infrastructure rehabilitation and maintenance has led to a rise in the levels of research into bituminous materials. Breakthroughs in sustainable and environmentally friendly bituminous materials are certain to have a significant impact on national economies and energy sustainability. This book will provide a comprehensive review on recent advances in research and technological developments in bituminous materials. Opening with an introductory chapter on asphalt materials and a section on the perspective of bituminous binder specifications, Part One covers the physiochemical characterisation and analysis of asphalt materials. Part Two reviews the range of distress (damage) mechanisms in asphalt materials, with chapters covering cracking, deformation, fatigue cracking and healing of asphalt mixtures, as well as moisture damage and the multiscale oxidative aging modelling approach for asphalt concrete. The final section of this book investigates alternative asphalt materials. Chapters within this section review such aspects as alternative binders for asphalt pavements such as bio binders and RAP, paving with asphalt emulsions and aggregate grading optimization. - Provides an insight into advances and techniques for bituminous materials - Comprehensively reviews the physicochemical characteristics of bituminous materials - Investigate asphalt materials on the nano-scale, including how RAP/RAS materials can be recycled and how asphalt materials can self-heal and rejuvenator selection