FOERFARANDE Foer ATT accelerer HAORDNANDET OCH OEKA HAOLLFASTHETEN AV CEMENTER CEMENTMASSOR CEMENT-SANDBRUK OCH BETONGER

摘要

A method for accelerating the hardening and increasing the strength of cements, including cement pastes, cement-sand mortars and concretes, which comprises mixing the cements with water plus an admixture at a temperature up to 60 DEG C., and thereafter allowing the mixture to harden at a temperature up to 100 DEG C. The admixture used comprises bialuminium pentahydroxychloride, gypsum, lime and alkali or alkaline earth nitrite.