During the hot summer of 1995, there were a series of rutting failures on roads during construction and early trafficking of asphalt pavements that were ascribed to problems associated with laying in hot weather conditions. Based on previous research into the cooling behaviour of freshly laid layers of asphalt and in consultation with representatives from the Industry, a proposal for a method for risk of damage assessment in such conditions has been prepared. To validate the approach taken, various laboratory studies have been undertaken to gain additional insight into the influence that various parameters have on the deformation of asphalt. (A)

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