Experimental research on hysteretic behavior of recycled concrete.

To further promote the use of recycled concrete in practice, Pseudo-static tests were carried out for 4 natural RC's ( reinforced concrete) columns and 8 recycled RC's columns. During the institute of building type test, the Load ( P) -displacement (Δ) relationship curves to each specimen were obtained, and the breakage mode, hysteresis loop, skeleton curves, energy dissipation, stiffness retrogression, ductility performance and carrying capacity of each specimen were similar to those of the natural RC's columns. In small axial ratio, the breakage mode was brittleness default, and in large axial ratio, the mode was ductility breakage. The ductility performance of recycled concrete is poor to the natural concrete. The fly ash could improve the ductility performance but lower the carrying capacity. In conclusion, the seismic behavior of recycled aggregate RC's column is apparently similar to that of natural RC's column. [ABSTRACT FROM AUTHOR]