EN
Plans are made to apply the chemical consolidation of gypsum material in the case of gypsum joints found in ancient walls. Samples prepared in laboratory conditions have been analysed before and after the stabilising treatment. A comparative analysis of alterations in the structure, caused by the treatments has been carried out. The stabilised samples testified to a distinct sealing of the superficial layers of the material. This procedure is the consequence of the crystallisation of new products which are the outcome of the components of the stabiliser, deposited inside the pores of the gypsum material and on its surface.