Damping capacity of fly ash-based geopolymer

Zhu, P., Kai, G., Kenan, F., Sanjayan, J.G., Wenhui, D. and Collins, Francis 2013, Damping capacity of fly ash-based geopolymer, in ICCM 2011 : Proceedings of the 18th International Conference on Composite Materials, Springer, New York, N.Y., pp. 3128-3137.

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Title Damping capacity of fly ash-based geopolymer
Author(s) Zhu, P.
Kai, G.
Kenan, F.
Sanjayan, J.G.
Wenhui, D.
Collins, FrancisORCID iD for Collins, Francis orcid.org/0000-0001-6331-5390
Conference name Composite Materials. International Conference : (18th : 2011 : Jeju, Korea)
Conference location Jeju Island, South Korea
Conference dates 21-26 Aug. 2011
Title of proceedings ICCM 2011 : Proceedings of the 18th International Conference on Composite Materials
Publication date 2013
Conference series Composite Materials
Start page 3128
End page 3137
Total pages 5
Publisher Springer
Place of publication New York, N.Y.
Keyword(s) geopolymer
compressive strength
damping capacity
Summary As environmentally-friendly materials, geopolymers have the potential to replace ordinary Portland cement (OPC) for the construction of railway sleepers and multi-flue chimneys, where the vibration control capabilities of the material must be considered. The critical damping value (ξ) is the main parameter in relation to vibration reduction. In this study, the traditional logarithmic decrement technique was used to measure the ξ of geopolymers. Geopolymers were prepared by activating fly ash using alkali solutions with different SiO2/Na2O ratios. The results show that the ξ of the geopolymers is similar to that of the OPC counterpart. Finite element analysis (FEM) based on the Rayleigh damping model was conducted to replicate the test results, and scanning electron microscopy and mercury-intrusion porosimetry were used to study the microstructure of the geopolymers. A discussion of the possible damping mechanisms based on the microstructural investigation and the FEM analysis is presented.
Language eng
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, Springer Science + Business
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078560

Document type: Conference Paper
Collections: Institute for Frontier Materials
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