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Preparation and Characterization of Fly Ash and Aluminium Waste Geopolymer

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Abstract:

Geopolymeris an alumino-silicate material with three dimensional amorphous structures. The main compositions are silica and alumina which were decomposed by alkaline solution. Geopolymer materials not only have comparable or superior properties to portland cement, but also have lower greenhouse emission. In this study, Preparation and characterization of geopolymer were investigated. The main composition of fly ash from Mae Moh power plant is SiO2 and Al2O3. The major composition of Aluminium waste from aluminium frame industry is Al2O3.The geopolymer pastes were mixed at various proportions of FA:Al-waste of 100:0 80:20 60:40 and 40:60 by weight. Sodium hydroxide and sodium silicate were used as alkali activators.A mass ratio of 2.5 Na2SiO3/NaOH and three concentrations of NaOH (5 10 15 M) were used. Geopolymer were cured at ambient temperature for 7days. Properties of geopolymer specimens were measured for example compressive strength, bending strength, phase by XRD, and bonding by FT-IR.

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Periodical:

Key Engineering Materials (Volume 608)

Pages:

108-113

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.608.108

Citation:

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Online since:

April 2014

Authors:

Sujitra Onutai, Sirithan Jiemsirilers*, Shigetaka Wada, Parjaree Thavorniti

Keywords:

Aluminium Waste, Fly Ash (FA), Geopolymer

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* - Corresponding Author

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