Full-scale Axial Loading Tests of Concrete-filled Steel Tubular Columns Incorporating Demolished Concrete Lumps

Title: Full-scale Axial Loading Tests of Concrete-filled Steel Tubular Columns Incorporating Demolished Concrete Lumps
Author(s): Bo WU, Xinyu ZHAO, Qiongxiang LIU, Jinsuo ZHANG
Paper category : conference
Book title: 2nd International Conference on Waste Engineering and Management - ICWEM 2010
Editor(s): J.Zh. Xiao, Y. Zhang, M.S. Cheung and Reuben P. K. Chu
Print-ISBN: 978-2-35158-102-5
e-ISBN: 978-2-35158-103-2
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 36 - 45
Total Pages: 10
Nb references: 22
Language: English

Abstract: Recycling/reuse of demolished concrete has become an attractive option in civil engineering regarding sustainable development. In the interest of promoting direct reuse of waste concrete, the authors proposed a novel scheme that is filling a hollow steel tube with a mix of new concrete and demolished concrete lumps (DCLs) or demolished concrete segments (DCSs) to use as a structural component [1]. Accordingly, this new concept of recycling demolished concrete has been implemented recently in an actual project in China.
To validate the axial strengths as well as the workability of the innovative composite columns adopted in this project, an experimental investigation including two full-size DCLs filled steel tubular (DCLFST) stub columns cast on site was carried out and presented here. As the measured yield axial load of each specimen is approximated at 10000 kN, exceeding three times of the designed axial load, the reliabilities of the prototype columns are thus warranted sufficiently. The nonlinear finite element software ABAQUS is utilized to simulate the measured load-deformation curves. In addition, comparisons are made with predicted ultimate strengths of specimens using the existing codes and specifications.

Online publication: 2011-01-25
Publication type : full_text
Public price (Euros): 0.00