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Effect of firing temperatures on alkali activated Geopolymer mortar doped with MWCNT
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  • Journal title : Advances in nano research
  • Volume 3, Issue 4,  2015, pp.225-242
  • Publisher : Techno-Press
  • DOI : 10.12989/anr.2015.3.4.225
 Title & Authors
Effect of firing temperatures on alkali activated Geopolymer mortar doped with MWCNT
Khater, H.M.; Gawwad, H.A. Abd El;
 Abstract
The current investigation aims to study performance of geopolymer mortar reinforced with Multiwalled carbon nanotubes upon exposure to to for 2 hrs. MWCNTs are doped into slag Geopolymer mortar matrices in the ratio of 0.0 to 0.4, % by weight of binder. Mortar composed of calcium aluminosilicate to sand (1:2), however, binder composed of 50% air cooled slag and 50% water cooled slag. Various water / binder ratios in the range of 0.114-0.129 used depending on the added MWCNT, while 6 wt., % sodium hydroxide used as an alkali activator. Results illustrate reduction in mechanical strength with temperature except specimens containing 0.1 and 0.2% MWCNT at , while further increase in temperature leads to decrease in strength values of the resulting geopolymer mortar. Also, decrease in firing shrinkage with MWCNT up to 0.1% at all firing temperatures up to is observed, however the shrinkage values increase with temperature up to . Further increase on the firing temperature up to results in an increase in the volume due to expansion.
 Keywords
MWCNT;geopolymer;mortar;WCS;ACS;thermal stability;
 Language
English
 Cited by
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