Effects of fly ash source and curing procedure on strength development of geopolymers
Paper
Paper/Presentation Title | Effects of fly ash source and curing procedure on strength development of geopolymers |
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Presentation Type | Paper |
Authors | Zhang, Z. (Author), Wang, H. (Author), Reid, A. (Author) and Aravinthan, T. (Author) |
Editors | Fragomeni, Sam, Venkatesan, Srikanth, Lam, Nelson and Setunge, Sujeeva |
Journal or Proceedings Title | Proceedings of the 21st Australasian Conference on the Mechanics of Structures and Materials (ACMSM 21) |
ERA Conference ID | 42490 |
Number of Pages | 5 |
Year | 2011 |
Place of Publication | London, United Kingdom |
ISBN | 9780415616577 |
Web Address (URL) of Paper | http://www.vu.edu.au/acmsm21 |
Conference/Event | 21st Australasian Conference on the Mechanics of Structures and Materials (ACMSM 21) |
Australasian Conference on the Mechanics of Structures and Materials | |
Event Details | Australasian Conference on the Mechanics of Structures and Materials Rank B B B B B B B B B B B B B B B B B B B B B B B B B B B B B |
Event Details | 21st Australasian Conference on the Mechanics of Structures and Materials (ACMSM 21) Parent Australasian Conference on the Mechanics of Structures and Materials Delivery In person Event Date 07 to end of 10 Dec 2010 Event Location Melbourne, Australia |
Abstract | Fly ash geopolymer is regarded as a 'green' alternative for cement, which can be synthesized at a lower temperature using industrial waste as the major raw materials. Lightweight fly ash geopolymer offers many environmental and commercial advantages. This study compared the mechanical properties of geopolymers by NaOH solution activation of fly ash from different sources. Results showed that the high calcium and iron content in fly ash was the primary reason accounting for the high compressive strength of the corresponding geopolymer sample. High temperature curing at 90°C caused high shrinkage of geopolymer paste while mild temperature curing at 40°C resulted in prolonged strength development and lower final strength. To obtain a volume stable foamed geopolymer, a two-step curing procedure was developed with mild temperature 40°C curing at first following by 90°C curing. |
Keywords | geopolymers; fly ash; high temperature; iron content; mild temperatures; NaOH solutions; strength development |
ANZSRC Field of Research 2020 | 400505. Construction materials |
401609. Polymers and plastics | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Faculty of Engineering and Surveying |
Centre of Excellence in Engineered Fibre Composites | |
Haald Engineering, Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q09x9/effects-of-fly-ash-source-and-curing-procedure-on-strength-development-of-geopolymers
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