Compressive Strength Development of Blast Furnace Slag Binder Mortar

슬래그 결합재 모르타르의 압축강도 발현 성상

Recently, with the emphasis on green development, international efforts to lessen environmental problem is gaining momentum. In order to achieve true green development, the primary task is to minimize environmental load such as energy and the $CO_2$ emission levels due to the consumption of resources. As an effort to decrease $CO_2$ emission levels, construction sites is lowering the use of cement and instead is actively promoting the use of industrial by-products such as blast-furnace slag cement and fly ash cement. As a part of this low-carbon green movement, the concrete industry is also largely replacing its general concrete with fly ash and blast-furnace slag concretes and between these two alternatives, the blast-furnace slag concrete is more widely used. The advantages of blast-furnace slag concrete may include lower hydration heating velocity, restraint on concrete temperature increase, long-age strength improvement due to latent hydraulic reaction, improved water tightness, and repulsion to chemical erosion. These advantages contribute to the high quality of the blast-furnace slag concrete.