Morphology of lightweight metakaolin-based geopolymer polystyrene composite paste at early ages

Mohd Azrul Abdul Rajak and Nur Mizan Izzati Masran and Sazmal Effendi Arshad and Eddy Mohd Farid Mohd Yusslee (2021) Morphology of lightweight metakaolin-based geopolymer polystyrene composite paste at early ages. Transactions on Science and Technology, 8 (2). pp. 273-280. ISSN 2289-8786

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Abstract

The integration of polystyrene foams as the lightweight agent in geopolymer is an alternative to produce a lightweight metakaolin-based geopolymer. Meanwhile, the microstructure studies assist to provide better understanding towards the formation of lightweight geopolymer. Hence, the present study examined the morphological characteristics of lightweight metakaolin-based geopolymer polystyrene composite at an early age. The lightweight metakaolin-based geopolymer paste is prepared at ratio 0.7 by using sodium hydroxide as an alkaline activator and the addition of polystyrene foams at ratio of 0.3. The morphology of the lightweight metakaolin-based geopolymer polystyrene paste was analyzed through SEM analysis at 14 days curing ages. The lightweight geopolymer at early ages consisted of the unresponsive metakaolin and porous gel as it gave less dense and compact microstructure. Meanwhile, the analysis showed that the polystyrene foams blended-well in the geopolymer matrix. However, the high temperature during the curing process damages the texture of some of the polystyrene foams. Yet, the utilization of the polystyrene foams as lightweight agents is believed to produce a lightweight metakaolin-based geopolymer.

Item Type:	Article
Keyword:	Lightweight geopolymer , Metakaolin-based geopolymer , Polystyrene foams , Geopolymerization , Metakaolin
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Department:	CENTRE > Preparation Centre for Science and Technology
Depositing User:	SAFRUDIN BIN DARUN -
Date Deposited:	26 Sep 2022 09:33
Last Modified:	26 Sep 2022 09:33
URI:	https://eprints.ums.edu.my/id/eprint/34215

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