A method for increasing the resistance of pozzolana mixtures

摘要

671,705. Lime compositions. FERROBETON SOC. ITALIANA PER AZIONI. Jan. 12, 1950 [Jan. 13, 1949], No. 839/50. Class 22 The setting and hardening of lime puzzuolana (artificial or natural) mixtures is accelerated by the addition of cement-finepugguolana not exceeding, by weight, 30 per cent of the puzzuolana already present.