In recent years, as subject for large concrete structures, there has been a growing demand for mass concrete that offers both low-heat and high-strength in low-temperature environments. However, these performance demands are generally contradictionary. In order to develop the concrete technology satisfying these performance demands, basic properties of concrete were examined by using a new superplasticizer with the cementitious materials comprising moderate heat Portland cement, blast-furnace slag, silica fume, and gypsum. The result of the studies indicated that it is possible to produce high-performance concrete with low heat and high strength in low temperature environments, by means of properly combining the new superplasticizer and those materials with low water-binder ratio
