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Compressive Behaviour of Thin-walled Square Tubular Columns Filled with High-strength Steel Section and Precast Compound Concrete Segments by Wu, Bo; Lin, Lang; Zhao, Junxian; Shen, Chao is a Engineering article available to read on EtoBox.

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Different from small-scale recycled aggregates (31.5 mm) in recycled aggregate concrete, recycling waste concrete in structural members in the form of compound concrete, constructed with large-scale (60-200 mm) demolished concrete lumps (DCLs) and fresh concrete, provides a viable option to designers. Such DCLs can be mixed with fresh concrete in shop to produce precast concrete segments (PS-DCLs), which can be transported to construction site to expedite construction process of the structural members with the PS-DCLs. In this paper, an innovative thin-walled square tubular column filled with I-shaped high-strength steel (HSS) section and PS-DCLs is proposed to enable easy application of the DCLs into vertical structural members and address the shortcomings of the HSS section. The PS-DCLs are placed into the gap between the outer tube and the inner HSS section, using in-filled grout as bonding among them, to produce composite column. A new precasting procedure for fabricating such columns is proposed. Axial compression tests were conducted to investigate the effects of fabrication procedure, yield strength of the inner steel section, replacement ratio of the DCLs, and configuratio

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Author

Wu, Bo; Lin, Lang; Zhao, Junxian; Shen, Chao

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0263-8231)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)