Strength Estimation of GGBF Slag Concrete by Warm Water Method

온수법에 의한 고로슬래그 미분말 혼합 콘크리트의 강도추정

The cost of producing ready mixed concrete(remicon) has increased due to the rising cost of raw materials for concrete and transportation caused by the upturn of oil price. In contrast, its orders have also decreased due to the recession of the construction industry. In addition, the cost of delivery has decreased owing to the excessive competition among manufacturing companies, so manufacturing companies began mixing ground granulated blast-furnace slag or fly ash to lower the cost. However, there is no way to determine whether the strength of the concrete using the admixture is satisfied or dissatisfied with design strength at the early age. The purpose of this study is dedicated to early strength estimation of concrete mixed with an admixture, ground granulated blast-furnace slag.