Axial compressive behavior of recycled concrete fi lled steel tubular stub columns with the inclusion of crushed brick

In China, due to the extensive use of brick as the non-structural walls in the old concrete building, it is hard to exclude the waste brick from the waste concrete in the production of recycled coarse aggregates. It was found that the compressive resistance only decreased by up to 3.8% when half of...

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Bibliographic Details
Published in:Structural engineer (London, England : 1988) England : 1988), 2020-07, Vol.98 (7), p.47
Main Authors: Chena, Jie, Zhang, Sumei, Wang, Yuyin, Geng, Yue
Format: Article
Language:English
Subjects:
Aggregates
Compressive properties
Concrete
Concrete aggregates
Concrete construction
Crushing
Design for recycling
Material properties
Recycled materials
Steel columns
Steel tubes
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Summary:In China, due to the extensive use of brick as the non-structural walls in the old concrete building, it is hard to exclude the waste brick from the waste concrete in the production of recycled coarse aggregates. It was found that the compressive resistance only decreased by up to 3.8% when half of the recycled coarse aggregate was substituted by the crushed clay brick (CCB). The structural effects of the CCB replacement are much smaller than the corresponding effects in the material property tests, owing to the confinement effects. The stress states of the steel and the concrete infill were analyzed separately. Model equations to describe the stress-strain responses and the design recommendations for recycled brick aggregate concrete filled steel tubes (RBACFSTs) were proposed.
ISSN:1466-5123
DOI:10.1016/j.istruc.2020.03.045