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Title |
A Study on the Quality Properties When Applying Recycled Aggregate Concrete for the Construction Standard Mitigation
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Authors |
우경섭(Gyeong-Sub Woo) ; 김정호(Jung-Ho Kim) ; 이세현(Sea-Hyun Lee) ; 오중근(Jung-Keun Oh) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.3.63 |
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Keywords |
건축기준완화; 순환골재; 순환골재콘크리트; 건조수축 Construction standard mitigation; Recycled aggregate; Recycled aggregate concrete; Drying shrinkage |
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Abstract |
The volume of construction waste material from the entire waste material volume in Korea is approximately 47.3% to take the biggest ratio, and from them, the waste concrete takes up approximately 62.8% that recycling is an urgent issue to address. Therefore, the government recommends more diverse and broader facilitation of the recycled aggregate in order to promote recycling the construction waste materials. In addition, when using concrete recycled aggregate in building, building standard such as floor area ratio and building height are being mitigation. The standard is a condition that mitigation the floor area ratio by up to 15% when using up to 25% of concrete recycled aggregate. Therefore, this study reviewed the relaxation of construction of construction standards when using concrete recycled aggregate in order to actively recommend the use of concrete recycled aggregate. And using the recycled coarse aggregate among the recycled aggregate, the appropriate mixing time in the batch plant according to the substitution rate was derived. In addition, using recycled aggregate admixture in order to improve the drying shrinkage, did comparative analysis about physical and mechanical property of concrete.
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