Effect of Mixed Use of Fine Aggregates on the Flowability of Ultra High Strength Concrete

잔골재 혼합사용이 석회암 굵은 골재 사용 초고강도 콘크리트의 유동특성에 미치는 영향

As this study is one related to ultra high strength concrete using crushed coarse limestone aggregates among the series of experiments for improving the economic inefficiency of the ultra high strength concretes used for high rise structures, it has analyzed the flowability of ultra high strength concrete according to the variation of blended fine aggregates. As a result of analyzing the characteristics of fresh concrete, it is determined that the application of ultra high strength concrete would be difficult in case of a mix using blended fine aggregates as lower flowability than the mix using limestone crushed fine aggregate only was shown in all mixes using blended fine aggregates.