Materials used fur repairs in stones must have similar mechanical, thermal and physical (porosity and absorption capacity) properties as the original stone. Monomer-polymer mixtures of methacrylates, and epoxy resins, with different mineral fillers of varying grain size, have been chosen as most promising. The processes of hardening, without and with fillers, the properties of obtained artificial stones, and means of practical application, were investigated in a systematic way. The results are presented in over one hundred tables, diagrams and photographs. A French summary is included. -- AATA