Seismic Behavior of High-Strength Recycled Aggregate Concrete Columns with High-Strength Reinforcement

ABSTRACT

This study investigated the seismic performance of high-strength recycled aggregate concrete (RAC) columns with high-strength reinforcement under cyclic loading. Five full-scale columns were carried out, and the results revealed that the lateral loading capacity of RAC column was slightly lower than that of natural aggregate concrete column. Increasing the axial load, the lateral loading capacity of RAC columns increased significantly. Increasing the concrete strength under the same axial load, the lateral loading capacity was slightly increased. Based on the test results, a numerical simulation model was established. Finally, a flexural capacity calculation model and an N–M curve calculation model are proposed.

KEYWORDS:

• High-strength reinforcement
• high-strength recycled aggregate concrete
• column
• seismic performance
• N-M curve

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author statement

All authors contributed to the study conception and design. Writing, review, editing, and supervision were mainly completed by Jianwei Zhang. Data analysis, writing, insight analysis, methodology, and visualization were mainly completed by Xinyi Tao. Yunyi Zhang contributed to the methodology and supervision. Man Zhang contributed to reviewing and editing. All authors commented on previous versions of the manuscript.

Additional information

Funding

This research was supported by the National Natural Science Foundation of China [Grant No. 52178448].