A Preliminary Study of Alkali-Activated Pozzolan Materials Produced with Sodium Hydroxide Activator
A Preliminary Study of Alkali-Activated Pozzolan Materials Produced with Sodium Hydroxide Activator |
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| © 2023 by IJETT Journal | ||
| Volume-71 Issue-7 |
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| Year of Publication : 2023 | ||
| Author : Parea R. Rangan, M. Tumpu, Mansyur, James Thoengsal |
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| DOI : 10.14445/22315381/IJETT-V71I7P236 | ||
How to Cite?
Parea R. Rangan, M. Tumpu, Mansyur, James Thoengsal, "A Preliminary Study of Alkali-Activated Pozzolan Materials Produced with Sodium Hydroxide Activator," International Journal of Engineering Trends and Technology, vol. 71, no. 7, pp. 375-382, 2023. Crossref, https://doi.org/10.14445/22315381/IJETT-V71I7P236
Abstract
Mortar that is more environmentally friendly (green mortar) is defined as concrete that at least uses waste material as one of its components or that does not cause environmental damage during the production process. Geopolymer is an environmentally friendly technology because it utilizes pozzolanic materials such as fly ash, rice straw ash, and laterite soil as waste materials. This work describes the experimental inquiry carried out to produce the geopolymer mortar based on alkali-activated fly ash, rice straw ash, and laterite soil by sodium hydroxide (NaOH). The influence of the curing technique on compressive strength and optimum mix proportion of geopolymer mortar were explored. In experiments, an alkaline activator (NaOH) was used with a binder composition at weight ratios of 4.17:1.67:4.17, rice straw ash, fly ash, and laterite soil were combined. To examine the workability and mechanical properties of the final geopolymer, experiments on mortar flow and compressive strength were performed. Fresh geopolymers subjected to flow testing reveal that all components are tightly linked, and segregation does not occur. The hardened test specimen was treated in two different ways—in the open air and by being submerged in water solutions—for up to 7 and 28 days, respectively, to ascertain its resistance. The 12 M alkali-activated geopolymer mortar may reach compressive strengths of 1.72 N/mm2 and 3.22 N/mm2 for air curing and 1.63 N/mm2 and 1.68 N/mm2 for water curing, respectively, after 7 and 28 days of casting when cured for 24 hours. The compressive strength was shown to rise with an increase in curing method, curing time, and alkali activator concentration.
Keywords
Fly ash, Rice straw ash, Laterite soil, Sodium hydroxide, Geopolymer.
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