1. British Standard. Specification for constituent materials and concrete. BS 8500-2; 2002:7–8.
2. Japan Industrial Standard. Recycled concrete for concrete-class H, JIS A 5021; 2007:101.
3. Korea Standard. Testing method for impurity contents of recycled aggregate. KS F 2576; 2006:1–7.
4. Kensuke K, Rie M, Hideki T, Takashi M, Takashi I. Investigation on properties and influences of impurities in construction waste. Architectural Institution of Japan 2006;600:59–66.
5. Park WJ, Noguchi TF, Nagai HN. The influence of metal impurities on the properties of recycled concrete. In: International sustainable building conference (SB10 Seoul); 2010;225–231.