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Experimental study on strength and ductility of steel tubular stub columns filled with geopolymeric recycled concrete

Shi, X.S., Wang, Q.Y., Zhao, X.L. and Collins, Francis 2012, Experimental study on strength and ductility of steel tubular stub columns filled with geopolymeric recycled concrete, in ISTS 2012 : Proceedings of the 14th International Symposium on Tubular Structures, CRC Press, Boca Raton, Fla., pp. 757-764, doi: 10.1201/b13139-108.

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Title Experimental study on strength and ductility of steel tubular stub columns filled with geopolymeric recycled concrete
Author(s) Shi, X.S.
Wang, Q.Y.
Zhao, X.L.
Collins, FrancisORCID iD for Collins, Francis orcid.org/0000-0001-6331-5390
Conference name Tubular Structures. International Symposium on (14th : 2012 : Imperial College, London)
Conference location Imperial College, London, UK
Conference dates 12-14 Sep. 2012
Title of proceedings ISTS 2012 : Proceedings of the 14th International Symposium on Tubular Structures
Editor(s) Gardner, L
Publication date 2012
Series Symposium on Tubular Structures
Start page 757
End page 764
Total pages 8
Publisher CRC Press
Place of publication Boca Raton, Fla.
Keyword(s) geopolymeric recycled concret (GRC)
tubular stub column
recycled aggregate replacement ration
strength
ductility
Summary Geopolymeric recycled concrete (GRC) is a new construction material which takes environmentalsustainability into account, by using alkali solution and fly ash to completely substitute Portland cementas well as by replacing natural coarse aggregate with recycled coarse aggregate. GRC could be used togetherwith steel hollow sections to form composite section. There is very limited study on such GRC filledtubular sections. This paper presents an experimental study on GRC filled tubular stub columns. A total of 12specimens were tested. The main parameters varied in the tests are: (1) two section sizes of square hollow sections(B × t) with 200mm×6mm and 150mm×5mm; (2) different concrete types: GRC and recycled aggregateconcrete (RAC); (3) different recycled aggregate (RA) replacement ratios of 0%, 50% and 100%. The relationshipof load versus axial strain was recorded and analysed to compare the ultimate strength and failuremechanism. Meanwhile, the ductility of the columns was investigated by a ductility index (DI). The resultsshow that the ultimate strength decreased with increasing RA contents for both GRC and RAC filled columns.The influence of RA content on the strength was greater in GRC than that in RAC. The effect of RA contenton the ductility of the columns was further investigated. Simulation method for predicting load versus strainrelationship is discussed for RAC and GRC filled steel tubular columns with different RA replacement ratios.
ISBN 9780415621373
Language eng
DOI 10.1201/b13139-108
Field of Research 090505 Infrastructure Engineering and Asset Management
090503 Construction Materials
Socio Economic Objective 870301 Cement and Concrete Materials
HERDC Research category E1.1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2012, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078553

Document type: Conference Paper
Collection: Institute for Frontier Materials
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