Primary and secondary aggregates: A perfect combination
As a matter of principle, product-neutral tendering is stipulated in the relevant German procurement regulations. Fact is, that due to according environmental specifications, the possible use of secondary aggregates compared to primary materials is limited. Local environmental conditions, technical requirements and the type of execution are influencing factors that have to be assessed in the tendering phase for each project. Due to the time and effort involved, many tendering bodies tend not to formulate tenders in a product-neutral manner, so that only primary building materials are permitted, and thus, execution with secondary raw materials is excluded.
But: If the relevant local requirements are met, execution with substitute construction materials or secondary aggregates is just as safe as construction with primary building materials, and at the same time economically more interesting. Anyone who decides to use substitute building materials – often in combination with primary building materials – demonstrates commitment to reuse, resource conservation and climate protection, which also pays off in economic terms.