Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 36, Issue -, Pages 695-703Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2012.06.064
Keywords
Geopolymer; Fly ash; Rice husk ash; Compressive strength; Bond strength
Categories
Funding
- Universiti Malaysia Pahang
- Universiti Teknologi Petronas
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The development of fly ash and microwave incinerated rice husk ash (MIRHA) blend as the source material for geopolymer concrete was studied through the observation of the hardened specimen strength. Compressive and bonding strength of the specimen indicate the significance of curing temperature in the activation of MIRHA particles. The elevated temperature is presenting a suitable condition for rapid dissolution of silicate monomer and oligomer from MIRHA surfaces, which supports the formation of supersaturated aluminosilicate solution in geopolymer system. It contributes to the refinement of pores structure via the increasing geopolymer gel growth, as observed in the consistent compressive strength development of ambient-cured specimen to the oven-cured specimen. Densification of geopolymer framework appears to be the main contributor to the increasing bonding capacity of geopolymer binder. (C) 2012 Elsevier Ltd. All rights reserved.
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