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In order to enable concrete production plants to reduce their manufacturing processes and costs, we prepared concrete with fmely ground Ca(OH) 2 , which improves the setting of concrete. We steam-cured concrete, and experimentally evaluated the effects of the added Ca(OHh and the curing conditions on the concrete's strength development. The results show that adding fmely ground Ca(OHh enhances the early strength of concrete. At a maximum temperature of 80 ° C the concrete exhibited the same level of strength as concrete that had been cured for 24 hours before removing the mold, even though a shorter curing time was used.