Mechanical and Drying Shrinkage of Concrete Replaced with Recycled Coarse Aggregate with Less than 13mm in Size

13mm이하 순환 굵은골재 치환에 따른 콘크리트의 역학적 특성 및 건조수축

This study has analyzed mechanical and dry shrinkage properties according to the recycled coarse aggregate by nominal strength actually being widely used at the Remicon companies for the purpose of qualitative improvement of concrete, practical use and examination at various strengths. As a result, although the modulus of elasticity showed a tendency of getting decreased as the replacement ratio of recycled coarse aggregate has increased, the difference was insignificant while the compressive strength showed a tendency of about 3MPa increase in the recycled coarse aggregate replacement ratio of 30% compared to the ratio of 0%. In case of the dry shrinkage length variation ratio, the recycled coarse aggregate replacement ratio of 30% showed a tendency of about 20% shrinkage reduction compared to the ratio of 0%.