EXPERIMENTAL RESEARCH ON THE FLEXURAL BEHAVIOR OF RECYCLED CONCRETE T-SHAPED CROSS-SECTION SUPERPOSED BEAMS

The flexural behaviors of four recycled concrete T-shaped cross-section superposed beams and one natural aggregate concrete T-shaped cross-section superposed beam were contrasted by full-scale test． The experimental results showed the features of the flexural mechanism of these recycled aggregate concrete superposed beams were similar to those of the natural aggregate concrete superposed beams; the plane section assumption of normal section was still applicable for the recycled concrete superposed beams． The currentCode for Design of Concrete Structures ( GB 500102010) was still suitable for calculating the ultimate bearing capacity of the recycled aggregate concrete T-shaped cross-section superposed beams．