Effect of blast-furnace slag particle fineness changes on the engineering characteristics of mortar

고로슬래그 미분말의 분말도 변화가 모르타르의 공학적 특성에 미치는 영향

Recently on construction sites, there is increased use of concrete with large quantities of blast-furnace slag(BS) admixture replacements, for purposes of reducing CO2 created from cement, one of the ingredients of concrete. But such high-BS fineness changes can have a huge effect on the quality of mortar and concrete. Therefore in this study an experiment was conducted in which liquidity and intensity of mortar depending on an artificially-applied change in fineness degree at degree 7. The results, though subtle, were that the larger the fineness degree, liquidity increased and air quantity decreased, and compression and flexural strength increased.