..., 127, Sept., 103 ± 108 Paper 11645 Written discussion closes 15 March 1999 & Currently, in the UK, there is considerable interest in the fact that a German bituminous surfacing mixture known as stone mastic asphalt may possess levels of in-service performance that resist the growing incidence...

... to be £207 million per year. These failures are generally characterized by gradual deterioration of the surrounding bituminous surfacing, associated with failure of the bedding material supporting the ironwork frame. The reasons for this high incidence of failure were investigated in a major project which...