Precast Concrete Column with Built-In Recycled Component and Construction Method Therefor

(10) WO2025195026

(22) 08.02.2025; (43) 25.09.2025

(57) Disclosed in the present invention are a precast concrete column with a built-in recycled component, and a construction method therefor. The precast concrete column comprises a recycled component, longitudinal column bars, spiral stirrups, common or composite stirrups, first connectors, second connectors, new concrete and grouting sleeves, wherein the recycled component comprises old stirrups, old longitudinal bars and old concrete. In the present invention, old beam-type components and old column-type components are directly utilized, instead of breaking old concrete therein into recycled blocks or recycled aggregate for reuse, thereby greatly simplifying a treatment process, significantly increasing the cyclic utilization rate of the old concrete, significantly reducing the amount of new concrete and corresponding cement, and achieving a significant energy-saving and carbon-reduction effect. Moreover, in the present invention, rebar connectors are further provided, such that ...

(71) South China University of Technology, CN