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Highway engineers are facing the challenge not only to design and construct sustainable and safe pavements properly and economically. This implies a thorough understanding of materials behaviour, their appropriate use in the continuously changing environment, and implementation of constantly improved technologies and methodologies. Bituminous Mixtures and Pavements VII contains more than 100 contributions that were presented at the 7th International Conference ‘Bituminous Mixtures and Pavements’ (7ICONFBMP, Thessaloniki, Greece 12-14 June 2019). The papers cover a wide range of topics: - Bituminous binders - Aggregates, unbound layers and subgrade - Bituminous mixtures (Hot, Warm and Cold) - Pavements (Design, Construction, Maintenance, Sustainability, Energy and environment consideration) - Pavement management - Pavement recycling - Geosynthetics - Pavement assessment, surface characteristics and safety - Posters Bituminous Mixtures and Pavements VII reflects recent advances in highway materials technology and pavement engineering, and will be of interest to academics and professionals interested or involved in these areas.
The development of an emulsified asphalt-aggregate cold mixture (EAM) design procedure is described. The procedure is based on extensive laboratory and field testing, and uses the Marshall stability equipment and a capillary soak test. The procedure consists of conducting aggregate and emulsion quality tests, determining the compatibility of emulsion and aggregate (coating), optimum moisture content at mixing and at compaction, optimum residual asphalt content, and adequacy of structural and durability properties of the mixture. The mix design procedure is intended to be practical and easily implementable by governmental agencies and others. Several mix designs for actual projects were conducted to aid in verification. Results show the procedure to be practical and reasonable. The study has shown that emulsified asphalt-aggregate cold mixtures are complex, and good engineering design is essential to achieve consistently satisfactory results.