English Abstract The joint research project "Environmental implications
of useful applications of primary and secondary materials to be used on top
of or in the ground" was carried out by four institutes i.e. RIVM, ECN,
TNO, and INTRON. In this research project an estimation is made of the
environmental implications when primary materials (natural materials) are
replaced by secondary materials (waste materials) in road constructions and
building materials. Moreover the results will be used in order to
contribute to the normalization of the application of secondary materials.
This report concerns the results of leaching experiments of secondary
materials.
