The role of Gypsum in Portlandite Stone Structure Formation
The hydration of calcium oxide has been examined in the presence of SO42-. The conditions, under which portlandite stone with the best physico-mechanical properties was formed, have been determined. The hardening conditions affect the phase composition and microstructure of portlandite stone with a bihydrated gypsum. The mechanism of CaO hardening has been determined in the presence of SO42- ions