1. 단위 시멘트량이 320kg/m3, 물 - 시멘트비가 45%, 잔골재율이 38%인 배합조건에서 콘크리트의 잔골재량(㉠)과 굵은 골재량(㉡)을 구하면? (단, 공기량: 4.5%, 시멘트의 밀도: 3.15g/cm3, 잔골재의 밀도: 2.56g/cm3, 굵은 골재의 밀도: 2.60g/cm3)
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