1. T.C. Hansen and H. Narud: Strength of Recycled Concrete Made from Crushed Concrete Coarse Aggregate, (2003).
2. S. Hasaba, M. Kawamura, K. Torik, K. Takemoto: Dry Shrinkage and Durability of Concrete Made from Recycled Aggregate (Transactions of the Japan Concrete Institute, 3, 1981, pp.55-60).
3. A.M. Neville: Properties of Concrete, 4th ed., (2002).
4. C.S. Poon, Z.H. Shui, L. Lam, H. Fok & S.C. Kou: Influence of moisture states of natural & RA on the slump & compressive strength of concrete, Cement and Concrete Research 34(2004) pp.31-36.
5. T. Mukai and H. Koizumi: Study on Reuse of Waste Concrete for Aggregate of Concrete, Japan-US Cooperative Service Programme, San Francisco, (1979).