Chemical reactions in the geopolymerisation process using fly ash-based geopolymer: A review

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dc.contributor.author Mohd Mustafa Al Bakri, Abdullah
dc.contributor.author Kamarudin, Hussin
dc.contributor.author Mohammed Amjad, Hussain
dc.contributor.author Khairul Nizar, Ismail
dc.contributor.author Rafiza, Abdul Razak
dc.contributor.author Mohd Izzat, Ahmad
dc.date.accessioned 2016-12-08T03:34:47Z
dc.date.available 2016-12-08T03:34:47Z
dc.date.issued 2011-07
dc.identifier.citation Australian Journal of Basic and Applied Sciences, vol. 5 (7), 2011, pages 1199-1203 en_US
dc.identifier.issn 1991-8178
dc.identifier.uri http://dspace.unimap.edu.my:80/xmlui/handle/123456789/44371
dc.description Link to publisher's homepage at http://www.ajbasweb.com en_US
dc.description.abstract The development of our world, demanding the power supply which is produced by combustion of coal. Unfortunately, the million of tons of fly ash and related-products have been generated. To overcome these problems, fly ash was used in term of geopolymer to produce precast structure, non structural elements, concrete pavements, concrete products and immobilization of toxic waste that are resistant to toxic waste that are resistant to heat and aggressive environment Geopolymer is a material produced by inorganic poly-condensation, i.e., by so-called "geopolymerization." The process comprises dissolution of aluminosilicate followed by condensation of free silicate and aluminate species to form a three-dimensional structure of silico-aluminate structures. This process involving alumino-silicate materials is a complex process that has yet to be described fully. Several studies focused the dissolution reaction of fly ash, rate of reaction, thermodynamic properties of the reaction and mechanism of hardening process involved in geopolymerisation.The raw materials of geopolymer, such as kaolinitic clays, metakaolin, fly ashes, blast furnace slag, mixtures of fly ashes and slag, mixtures of fly ashes and metakaolin, mixtures of slag and metakaolin, mixtures of slag and red mud, and mixtures of fly ashes and non-calcined materials like kaolin and stilbite have significant effects on the properties of the resulting geopolymer. Recent studies have been conducted to determine the effect of SiO2/Al2O3 ratios on the properties of the geopolymer, such as compressive strength, setting time, strength development, composition of the gel phase, and the microstructure of the alkaliactivated material. It is evident that several factors related to the chemistry of the raw materials and the production of the geopolymer affect the performance of the final geopolymer products. en_US
dc.language.iso en en_US
dc.publisher American-Eurasian Network for Scientific Information (AENSI Publisher) en_US
dc.subject Chemical composition en_US
dc.subject Crystallinity en_US
dc.subject Fly ash en_US
dc.subject Geopolymer en_US
dc.title Chemical reactions in the geopolymerisation process using fly ash-based geopolymer: A review en_US
dc.type Article en_US
dc.identifier.url http://www.ajbasweb.com/old/ajbas/2011/July-2011/1199-1203.pdf
dc.contributor.url mustafa_albakri@unimap.edu.my en_US


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