In Recent years, it is necessary to reduce carbon dioxide (CO2) emissions in terms of environmental impact reduction.Concrete is material which discharges many CO2 in concrete manufacturing fields.Especially,cement is material of the largest emitter of CO2 among component materials of concrete.An effective measure of reducing CO2 is considered to replace a part of portland cement with supplementary cementitious materials (SCMs) such as fly ash and ground granulated blast-fumace slag.However, the concrete of high replacing rate of SCMs is considered to decrease strength development of concrete at early ages and resistance to shrinkage cracking.Therefore, it is realistic for reducing CO2 emissions to use versatile cement with relatively-low replacing rate of the admixture.