Ahmad Sofri, L, Mustafa Al Bakri Abdullah, M, Rosli Mohd Hasan, M et al. (1 more author) (2020) The Influence of Sodium Hydroxide Concentration on Physical Properties and Strength Development of High Calcium Fly Ash Based Geopolymer as Pavement Base Materials. In: IOP Conference Series: Materials Science and Engineering. 2nd Joint Conference on Green Engineering Technology & Applied Computing 2020, 04-05 Feb 2020, Bangkok, Thailand. IOP Publishing
Abstract
This paper deals with the development of high calcium fly ash based geopolymers. Geopolymer paste was prepared from fly ash alkaline activator solutions using various mix design including molarity of sodium hydroxide used (6-14M) with solid-to-liquid ratio (1.0-3.0) and the sample were curing at ambient temperature. In this paper, flow value, setting time and unconfined compressive strength of high calcium fly ash based geopolymer paste was carried out using flow table equipment, Vicat's apparatus and compression testing machine to measure the properties caused by high calcium fly ash. It was found that solid to liquid ratio of 2.0 and NaOH molarity of 12M was the best mix design to be applied due to its maximum unconfined compressive strength achieved (up to 19MPa at 28 days) as well as its flow ability of the fresh paste which shown better result compared to other mix designs. High calcium was also found to result in higher strength.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This item is protected by copyright. This is an open access article under the terms of the Creative Commons Attribution 3.0 License (CC BY 3.0) (https://creativecommons.org/licenses/by/3.0/) |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) > ITS: Spatial Modelling and Dynamics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Oct 2021 10:48 |
Last Modified: | 15 Oct 2021 10:48 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1757-899x/864/1/012016 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:179200 |
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