Staff View: The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate

The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate

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Main Authors:	Alida, Abdullah, Mohd Mustafa Al Bakri, Abdullah, Kamarudin, Hussin, Zarina, Yahya, Sochacki, Wojciech, Rafiza, Abd Razak, Błoch, Katarzyna, Hamzah, Fansuri
Other Authors:	alida@unimap.edu.my
Format:	Article
Language:	English
Published:	MDPI AG 2022
Subjects:	Aggregate Geopolymer Inter-particle gelation Fly ash AIV NaOH
Online Access:	http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74760
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spelling	my.unimap-747602022-03-23T01:46:49Z The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate Alida, Abdullah Mohd Mustafa Al Bakri, Abdullah Alida, Abdullah Kamarudin, Hussin Mohd Mustafa Al Bakri, Abdullah Zarina, Yahya Sochacki, Wojciech Rafiza, Abd Razak Błoch, Katarzyna Hamzah, Fansuri alida@unimap.edu.my mustafa_albakri@unimap.edu.my Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP) Faculty of Mechanical Engineering Technology, Universiti Malaysia Perlis (UniMAP) Faculty of Civil Engineering Technology, Universiti Malaysia Perlis (UniMAP) Faculty of Mechanical Engineering and Computer Science, Częstochowa University of Technology Department of Physics, Częstochowa University of Technology Department of Chemistry, Institut Teknologi Sepuluh Nopember (ITS) Aggregate Geopolymer Inter-particle gelation Fly ash AIV NaOH Link to publisher's homepage at https://www.mdpi.com/ Aggregates can be categorized into natural and artificial aggregates. Preserving natural resources is crucial to ensuring the constant supply of natural aggregates. In order to preserve these natural resources, the production of artificial aggregates is beginning to gain the attention of researchers worldwide. One of the methods involves using geopolymer technology. On this basis, this current research focuses on the inter-particle effect on the properties of fly ash geopolymer aggregates with different molarities of sodium hydroxide (NaOH). The effects of synthesis parameters (6, 8, 10, 12, and 14 M) on the mechanical and microstructural properties of the fly ash geopolymer aggregate were studied. The fly ash geopolymer aggregate was palletized manually by using a hand to form a sphere-shaped aggregate where the ratio of NaOH/Na2SiO3 used was constant at 2.5. The results indicated that the NaOH molarity has a significant effect on the impact strength of a fly ash geopolymer aggregate. The highest aggregate impact value (AIV) was obtained for samples with 6 M NaOH molarity (26.95%), indicating the lowest strength among other molarities studied and the lowest density of 2150 kg/m3. The low concentration of sodium hydroxide in the alkali activator solution resulted in the dissolution of fly ash being limited; thus, the inter-particle volume cannot be fully filled by the precipitated gels. 2022 2022-03-23T01:46:49Z 2022-03-23T01:46:49Z 2021-02 Article Materials, vol.14(5), 2021, 11 pages 1996-1944 http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74760 https://doi.org/10.3390/ma14051111 en MDPI AG
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Aggregate Geopolymer Inter-particle gelation Fly ash AIV NaOH
spellingShingle	Aggregate Geopolymer Inter-particle gelation Fly ash AIV NaOH Alida, Abdullah Mohd Mustafa Al Bakri, Abdullah Alida, Abdullah Kamarudin, Hussin Mohd Mustafa Al Bakri, Abdullah Zarina, Yahya Sochacki, Wojciech Rafiza, Abd Razak Błoch, Katarzyna Hamzah, Fansuri The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
description	Link to publisher's homepage at https://www.mdpi.com/
author2	alida@unimap.edu.my
author_facet	alida@unimap.edu.my Alida, Abdullah Mohd Mustafa Al Bakri, Abdullah Alida, Abdullah Kamarudin, Hussin Mohd Mustafa Al Bakri, Abdullah Zarina, Yahya Sochacki, Wojciech Rafiza, Abd Razak Błoch, Katarzyna Hamzah, Fansuri
format	Article
author	Alida, Abdullah Mohd Mustafa Al Bakri, Abdullah Alida, Abdullah Kamarudin, Hussin Mohd Mustafa Al Bakri, Abdullah Zarina, Yahya Sochacki, Wojciech Rafiza, Abd Razak Błoch, Katarzyna Hamzah, Fansuri
author_sort	Alida, Abdullah
title	The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
title_short	The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
title_full	The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
title_fullStr	The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
title_full_unstemmed	The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
title_sort	effects of various concentrations of naoh on the inter-particle gelation of a fly ash geopolymer aggregate
publisher	MDPI AG
publishDate	2022
url	http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74760
_version_	1729704802846244864
score	13.222552

The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate

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