Journal ArticleDOI
A review on the utilization of red mud for the production of geopolymer and alkali activated concrete
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In this paper, an overview of the recent advances in the use of Red Mud (RM) for geopolymer synthesis has been presented in terms of hardened, fresh, and thermal properties and geopolymers and AABs microstructure analysis.About:
This article is published in Construction and Building Materials.The article was published on 2021-10-04. It has received 42 citations till now. The article focuses on the topics: Geopolymer & Fly ash.read more
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Journal ArticleDOI
Sustainable utilization of red mud waste (bauxite residue) and slag for the production of geopolymer composites: A review
Shaker M. A. Qaidi,Bassam A. Tayeh,Haytham F. Isleem,Afonso Rangel Garcez de Azevedo,Hemn Unis Ahmed,Wael Emad +5 more
TL;DR: In this article , a systematic review of the literature on the use of waste red mud and slag in the production of red mud-slag geopolymer (RM-SGP) is presented.
Journal ArticleDOI
A review of the sustainable utilisation of red mud and fly ash for the production of geopolymer composites
TL;DR: A review of the literature on the usage of red mud and fly ash (FA) in the production of red-mud-fly ash geopolymer composites (RM-FAGPC) is presented in this paper , which highlights the need for more research into the combination and proportion of these two raw materials with other cement-based materials.
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Comprehensive review of the properties of fly ash-based geopolymer with additive of nano-SiO2
TL;DR: In this article , the effects of nano-SiO2 on the properties of fly ash-based geopolymers including compressive strength, microstructure, hardening properties, shear bond strength, durability, and practical applications have been summarized.
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Preparation, properties and applications of fly ash-based porous geopolymers: A review
TL;DR: In this article , the processes for obtaining fly ash-based porous geopolymers are divided into two categories: bulk-type (direct foaming, sacrificial template, additive manufacturing, and fast microwave foaming method) and sphere type (suspension solidification, direct molding, and calcium chloride solution gel method).
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Sustainable construction via novel geopolymer composites incorporating waste plastic of different sizes and shapes
TL;DR: In this article , the influence of shape and size of plastic waste on the fresh-state and hardened-state properties of geopolymer (GP) mortars was investigated and it was shown that the flowability and mechanical properties of PET/geopolymer mortars improved with decreasing size of the plastic aggregates.
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Journal ArticleDOI
Bauxite residue issues: I. Current management, disposal and storage practices
TL;DR: In this paper, a review of current management practices for disposal and amendment of bauxite residue is presented, and how each unit process influences residue properties. But the most immediate and apparent barrier to remediation and utilization (improved sustainability) is its high alkalinity and sodicity.
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Synthesis and characterization of red mud and rice husk ash-based geopolymer composites
TL;DR: In this paper, a new type of geopolymer composite was synthesized from two industrial wastes, red mud (RM) and rice husk ash (RHA), at varying mixing ratios of raw materials and the resulting products characterized by mechanical compression testing, X-ray diffraction, and scanning electron microscopy to assess their mechanical properties, microstructure, and reaction reactions.
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Bauxite residue issues: II. options for residue utilization
TL;DR: In this article, a review of public domain information on bauxite residue re-use is presented, with a focus on the few highest volume uses of lowest risk, where the authors examine the reasons for inaction on residue use: volume, performance, cost and risk with the last two probably being paramount.
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The composition, recycling and utilisation of Bayer red mud
TL;DR: In this article, different methods and techniques have been suggested for the consumption of bulk red mud to maintain a sustainable environment, and an appropriate costbenefit analysis of the existing technologies needs to be examined in the future because of the high cost of the transportation of a large amount of red mud from alumina refineries to the point of application.
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Development of paving blocks from synergistic use of red mud and fly ash using geopolymerization
Anuj Kumar,Sanjay Kumar +1 more
TL;DR: In this article, the influence of red mud addition on the reaction, structure and properties of fly ash geopolymer was studied using isothermal conduction calorimetry (ICC), Fourier transform infrared spectroscopy (FTIR), electron probe microanalysis (EPMA), and mechanical testing.