Roadway Pavements of Recycled Concrete

In Switzerland deposits of gravel are growing scarce. For this and ecological reasons an effort is being made to recycle material, i.e. material produced by roadway demolition -instead of being dumpedshould be re-used in a way to achieve the highest possible quality. This means orderly reconstruction and separation of the materials strictly according to grade. In the course of constructing new motoways initial tests were carried out on the reusability of old concrete pavements. It was thereby proved that -provided appropriate preparatory measures are taken- a high-quality concrete pavement able to withstand thawing salt can be produced, without primary raw materials having to be added. The concrete test pavements (two short motorway sections) have been carrying traffic since 1990 and 1991, respectively.