Abstract
Fly ash-based geopolymer bricks are made by combining a sufficient amount of fly ash with filler materials and an alkaline solution. These bricks do not need the addition of cement as a binding material. Cement manufacturing is one of the most polluting activities in the construction industry; it is essential to find a way to reduce cement utilization. Although researchers have succeeded in developing fly ash-based geopolymer samples on a laboratory scale, knowledge about industrial-scale production of standard-size geopolymer brick specimens is still limited and unexplored. From an industrial standpoint, it is critical to comprehend the different elements that influence the qualities of fly ash-based geopolymer bricks, including the effect of curing condition/temperature/duration, raw materials, alkaline solution molarity, and water/binder ratio. In this study, more than 80 research articles are taken into account to understand the same. Although, the present paper is a review article; additionally, a small experimental work carried out by the authors has been reported in this paper. Geopolymer bricks of standard size, suitable for use in actual masonry work, were manufactured on an industrial scale. In contrast, previous researches mainly focused on developing small miniature bricks. The experimental results indicate that the compressive strength was influenced by the molarity of alkaline solution /curing period; the bricks prepared with 16 molars of NaOH have higher strength.
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Abbreviations
- FA:
-
Fly ash
- CO2 :
-
Carbon dioxide
- C-S-H:
-
Calcium silicate hydrates
- CTM:
-
Compressive strength testing machine
- N-A-S-H:
-
Sodium aluminosilicate hydrate gel
- RHA:
-
Rice husk ash
- GGBS:
-
Ground granulated blast furnace slag
- GT:
-
Gigatonne
- M:
-
Molarity
- OPC:
-
Ordinary Portland cement
- Si:
-
Silicon
- O:
-
Oxygen
- Al:
-
Aluminium
- H2O:
-
Water
- Na2SiO3 :
-
Sodium silicate
- NaOH:
-
Sodium hydroxide
- Al2O2 :
-
Aluminium dioxide
- SiO2 :
-
Silicon dioxide
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Idea of the article—BKS. Literature survey and data analysis—BKS. Drafting of the article/critical revision—BKS and SS. Supervision—SS.
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Singh, B.K., Sengupta, S. An overview of fly ash utilization in production of geopolymer bricks and various factors influencing its strength. Innov. Infrastruct. Solut. 7, 283 (2022). https://doi.org/10.1007/s41062-022-00891-z
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DOI: https://doi.org/10.1007/s41062-022-00891-z