The use of recycled materials in both their material and processed has become permitted in the majority of relevant European technical standards. Our institute was commissioned by manufacturers and resellers to carry out background tests for the authorizations required to place their recycled products on the mar-ket. Our research project focused on how products with plastic aggregate and extruded products recycled in 100% perform in the case of traditional test meth-ods. Besides, it was also examined which innovative test methods would be the ones that could reliably characterize the important performance properties of non-conventional materials. Based on our test results, there was no need to modify traditional test methods, but there are certain non-standard technological steps that must be followed to determine adequately the major properties of the products. KTI’s research results have also proved that, compared to the transport building elements used so far, recycled products also have properties that could surpass those of concurrent conventional elements offering service-ability advantages to the obvious environmental benefits.

laboratory tests; recycling building element; plastic aggregate; extruded product; environmental protection