Abstract：
With the age growing, strength of recycled concrete increases linearly.The strength degrades one level if the substitution rate is between 40% and 80%, and decline to C30 level with 100% substitution rate. The strength of concrete with abandoned concrete is at its best in 100% substitution rate while is at its worst in 80% substitution rate. Basically, strength of concrete with recycled clay brick and abandoned concrete decreases to substitution rate linearly. The best coarse type is recycled abandoned concrete with 20% substitution rate.
NAN Yang,WU Kai,CHEN Feng et al. INFLUENCE OF AGE AND SUBSTITUTION RATE ON STRENGTH OF COMPOUND COARSE AGGREGATE RECYCLED CONCRETE[J]. Architecture Technology, 2016, 47(1): 39-.
