Stiffness of cold recycled materials

摘要: An important part of the European SCORE project has been devoted to development adequate formulation methodologies for materials recycled in-situ with either foamed bitumen or bituminous emulsions. One particular concern is evolution stiffness time, which monitored on laboratory samples subjected accelerated curing procedures. The paper presents a continuation this research, main goal validate procedure by comparison values measured field cores. To that end, five major recycling jobs (foam and emulsion recycling) have selected during 2006 campaign. corresponding theoretical mix formulations manufactured in laboratory, compacted (gyratory compactor) at two different void contents cured 7 days 18°C 55% relative humidity (RH), followed 14 daysof 35°C 20% RH. sample was via dynamic axial compression tests 15°C 10Hz. At end curing, compared indirect tensile stiffness, way cores extracted from actual job sites. results these investigations first comparisons after 6 12 months are presented discussed. For covering abstract see ITRD E157233