Zhang, Z. and Wang, H. and Reid, A. and Aravinthan, T. (2011) Effects of fly ash source and curing procedure on strength development of geopolymers. In: ACMSM 21: Incorporating Sustainable Practice in Mechanics of Structures and Materials, 7-10 Dec 2010, Melbourne, Australia.
|HTML Citation||EndNote||Dublin Core||Reference Manager|
Full text not available from this archive.
Official URL: http://www.vu.edu.au/acmsm21
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.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Permanent restricted access to Published version due to publisher copyright policy.|
|Uncontrolled Keywords:||geopolymers; fly ash|
|Fields of Research (FOR2008):||09 Engineering > 0905 Civil Engineering > 090503 Construction Materials|
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
|Socio-Economic Objective (SEO2008):||E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering|
|Deposited On:||31 Mar 2011 18:56|
|Last Modified:||21 Jun 2012 14:49|
Archive Staff Only: edit this record