Journal ArticleDOI
Mechanical and microstructural characterization of geopolymers derived from red mud and fly ashes
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TLDR
In this paper, the compressive strength, geopolymerization process, and microstructure of the geopolymers were characterized in this study, and it was shown that the high alkalinity of red mud contributed to geopolymization, but additional NaOH was necessary to achieve maximum compressive strengths.About:
This article is published in Journal of Cleaner Production.The article was published on 2018-06-10. It has received 156 citations till now. The article focuses on the topics: Red mud & Geopolymer.read more
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Geopolymer-zeolite composites: A review
TL;DR: In this article, a review article highlights advances in the field of geopolymer-zeolite composites manufacturing and applications, and the resistance of zeolites in geopolymers, methods of their detection and effect of their presence on the properties of hybrid materials are discussed.
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Effects of Si/Al ratio on the efflorescence and properties of fly ash based geopolymer
TL;DR: In this paper, a test method of the efflorescence degree of fly ash based geopolymer was proposed and applied and the effects of the Si/Al ratio on products, microstructure, pore structures, compressive strength, water loss rate and efforescence of geopolymers were systematically investigated.
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Development of fly ash/slag based self-compacting geopolymer concrete using nano-silica and steel fiber
TL;DR: In this article, the simultaneous effect of nano-silica and steel fiber on the fresh and hardened state performance of self-compacting geopolymer concretes (SCGC) was investigated.
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Synthesis and characterization of one-part geopolymers for extrusion based 3D concrete printing
TL;DR: In this paper, a printable one-part geopolymer mix was developed, which could be extruded through the nozzle of a 3D printer and stacked together without deforming the bottom layers.
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Preparation of cleaner one-part geopolymer by investigating different types of commercial sodium metasilicate in China
TL;DR: In this paper, the effects of powder activators on the properties, microstructure and environmental impact of one-part geopolymer by measuring and characterizing compressive strength, porosity, reaction heat release, and carbon dioxide equivalent (CO2-e) emission.
References
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Journal ArticleDOI
Geopolymer technology: the current state of the art
Peter Duxson,Ana Fernández-Jiménez,John L. Provis,Grant C. Lukey,Ángel Palomo,J.S.J. van Deventer +5 more
TL;DR: A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali activation of aluminosilicates as mentioned in this paper.
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Geopolymers and geopolymeric materials
TL;DR: In the last few years, a new generation of materials can polycondense just like organic polymers, at temperatures lower than 100 deg. C. This new generation, whether used pure, with fillers or reinforced, is already finding applications in all fields of industry as mentioned in this paper.
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Workability and strength of coarse high calcium fly ash geopolymer
TL;DR: In this article, the basic properties viz., workability and strength of geopolymer mortar made from coarse lignite high calcium fly ash were investigated, and the results revealed that the workable flow of the geopolymers was in the range of 110 −±5% −135 −± 5% and was dependent on the ratio by mass of sodium silicate to NaOH and the concentration of NaOH.
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Influence of NaOH solution on the synthesis of fly ash geopolymer
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Influence of calcium compounds on the mechanical properties of fly ash geopolymer pastes.
TL;DR: Addition of calcium compounds as a fly ash substitute improved mechanical properties for the ambient temperature cured samples while decreasing Properties for the 70 degrees C cured samples.