CAJ | 학술논문

依据《普通混凝土用碎石或卵石质量标准及检验方法》（JGJ52—2006）研究原生混凝土强度等级与再生骨料性质的关系．结果表明：当原生混凝土强度等级低于C40时，原生混凝土强度等级对再生骨料表观密度影响不大．再生骨料吸水率与砂浆含量随原生混凝土强度等级升高分别呈相关性很好的指数式与线性降低．而当原生混凝土强度等级不同时，影响再生骨料吸水率的主要因素为再生骨料的砂浆含量与表观密度，二者影响程度之比为1. 5．因此，制备高性能的再生骨料混凝土宜采用较高强度等级的废弃混凝土制备再生骨料．原生混凝土强度等级应为再生骨料质量分类考核指标之一．
의거《보통혼응토용쇄석혹란석질량표준급검험방법》（JGJ52—2006）연구원생혼응토강도등급여재생골료성질적관계．결과표명：당원생혼응토강도등급저우C40시，원생혼응토강도등급대재생골료표관밀도영향불대．재생골료흡수솔여사장함량수원생혼응토강도등급승고분별정상관성흔호적지수식여선성강저．이당원생혼응토강도등급불동시，영향재생골료흡수솔적주요인소위재생골료적사장함량여표관밀도，이자영향정도지비위1. 5．인차，제비고성능적재생골료혼응토의채용교고강도등급적폐기혼응토제비재생골료．원생혼응토강도등급응위재생골료질량분류고핵지표지일．
In this paper, relationship between original concrete strength and properties of recycled aggregates was investigated based on quality standards and testing method of gravel or pebbles used for ordinary concrete（ JGJ52 -2006）. Results indicate that when original concrete strength is below C40, the strength has a little effect on bulk density of recycled aggregates. Water absorption and mortar content of recycled aggregates exponentially and linearly decreases with increase of original concrete strength, respectively. In the case of different original concrete strength, major factors influencing water absorption of recycled aggregates are its mortar content and bulk density, of recycled aggregates concrete and effect degree ratio of the former to the latter is 1.5. Therefore, preparation with high performance using original concrete with relatively strength is appropriate. Original concrete strength should be one of index for quality of recycled aggregates.