Aggregate products

Classification of aggregate products: CE marking and leaching test

According to the Construction Products Regulation (CPR), the CE marking of an aggregate product includes information on its technical properties and the dangerous substances it can contain. The test methods and the need for testing of dangerous substances in a construction product are still under development at the European level. Nevertheless, the basic principle will be that all those construction products from which dangerous substances might be released to soil, groundwater or surface water shall be tested. The leachability of hazardous substances will be tested as a part of the CE marking process in the future. This means that aggregate products will also be tested. The European test methods for leaching are under validation. One of the leaching tests is quite similar to the method used in the ASROCKS project. There are no national or European threshold values for the interpretation of the leaching test results.