Recently, demand for construction aggregates is increasing due to the growth of construction site scale. As natural aggregate sources are becoming depleted due to high demand in construction field, the utilization of recycled aggregate (RA) as coarse aggregate in concrete is becoming more important. In this study, the authors analyze the mechanical properties of normal- and high-strength concrete beams using RA and investigate the usefulness of the minimum steal ratio for RA reinforced concrete beams. The experimental results show that application of the minimum steel ratio to RA reinforced concrete beams is possible.

• 신명환(금오공과대학교 건축학부 건축공학과) | Myeong-Hwan Shin
• 송건호(금오공과대학교 건축학부 건축공학과) | Geon-Ho Song
• 백승민(금오공과대학교 건축학부 건축공학과) | Seung-Min Baek
• 김우석(금오공과대학교 건축학부 건축공학과) | Woo-Suk Kim
• 곽윤근(금오공과대학교 건축학부 건축공학과) | Yoon-Keun Kwak Corresponding author