For the possibility of further use of solidification product it is necessary to maintain certification (conformity
assessment). Government Directive No. 163/2002 offers the possibility how to make the conformity assessment or
it can be through a voluntary certification (used in building within the meaning of Act No. 183/2006), while it
would be possible to use it only in the Czech Republic. Because of currently missing standards or other technical
regulations in the Czech Republic dealing with the possibilities of use solidification products, the building technical
certificate (BTC) has to be provided at first. BTC provide technical determining of the product properties by the
authorized person. When the BTC is drafted it can be based on standards and technical regulations developed for a
similar type of material (e.g. a stabilized fly ash). Authorized person on the basis of BTC defines the technical
characteristics associated with the basic requirements and also determines their levels due to the intended use of
solidification product in construction. When BTC is released, the certification of solidification product can be
processed. After release of the certificate, solidification product can be used for its intended use, which is specified
in the relevant technical documents.