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Geopolymers in construction - recent developments [PDF]
Construction and Building Materials, 2020 Geopolymers are inorganic materials that result from the alkali activation of aluminosilicates. The aluminosilicates source materials can either occur naturally (e.g. kaolin, metakaolin, rice husk ash, volcanic rock powders) or are produced by industrial
Mohsin Nawaz +2 more
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Journal of Thermal Analysis, 1991
Spectacular technological progress has been made in the last few years through thedevelopment of new materials such as «geopolymers», and new techniques, such as «sol-gel». New state-of-the-art materials designed with the help of geopolymerization reactions are opening up new applications and procedures and transforming ideas that have been taken for ...
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Spectacular technological progress has been made in the last few years through thedevelopment of new materials such as «geopolymers», and new techniques, such as «sol-gel». New state-of-the-art materials designed with the help of geopolymerization reactions are opening up new applications and procedures and transforming ideas that have been taken for ...
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Thermal Properties of Geopolymers
2009The thermal properties of metakaolin and fly ash geopolymers with comparisons to ordinary Portland cement (OPC) are reviewed. The role and presence of secondary phases and aggregates are also discussed. The chapter explores the following characteristics of geopolymers upon exposure to high temperature: thermal expansion, weight loss, thermodynamics ...
Van Riessen, Arie +2 more
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Strength and Microstructural Analysis of Geopolymer Prepared with Recycled Geopolymer Powder
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2021The strength and microstructural analysis of recycled geopolymer are presented in this paper. Five kinds of geopolymers containing 0%, 20%, 50%, 80% and 100 % of recycled geopolymer powder were prepared using metakaolin as the source material. The alkali activator solution was a mixture of sodium silicate (Na2SiO3) and 12 M sodium hydroxide (NaOH). The
Xinjie Wang +5 more
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2014
Geopolymers, also referred to as Aluminosilicate Inorganic Polymers (AIP) and Alkali Activated Cement (AAC) are based on alkali soluble aluminium and silicon precursors (aluminosilicates). Structural differences and resulting properties of geopolymers can be explained by variation in the source silicon to aluminium amorphous molar ratio, alkali metal ...
Les Vickers +2 more
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Geopolymers, also referred to as Aluminosilicate Inorganic Polymers (AIP) and Alkali Activated Cement (AAC) are based on alkali soluble aluminium and silicon precursors (aluminosilicates). Structural differences and resulting properties of geopolymers can be explained by variation in the source silicon to aluminium amorphous molar ratio, alkali metal ...
Les Vickers +2 more
openaire +1 more source
2023
Technické řešení se týká geopolymerního kompozitu vytvořeného na bázi geopolymerního cementu, který obsahuje hlinitokřemičité pojivo na bázi metakaolinu a/nebo mleté vysokopecní granulované strusky a/nebo odletového popílku ve zvoleném jednotkovém množství.
Kinga Korniejenko +6 more
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Technické řešení se týká geopolymerního kompozitu vytvořeného na bázi geopolymerního cementu, který obsahuje hlinitokřemičité pojivo na bázi metakaolinu a/nebo mleté vysokopecní granulované strusky a/nebo odletového popílku ve zvoleném jednotkovém množství.
Kinga Korniejenko +6 more
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Bayer-geopolymers: An exploration of synergy between the alumina and geopolymer industries
Cement and Concrete Composites, 2013Abstract Previously, caustic residues such as red mud and sodium oxalate have been used to provide filler and as a supplementary source of alkali for geopolymers. However, rather than incorporation of dilute alkali residues within geopolymer precursors, a significant counter-intuitive approach is to synthesise geopolymers using Bayer process liquors ...
Van Riessen, Arie +4 more
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Hemp reinforcement in lightweight geopolymers
Journal of Composite Materials, 2017Natural fibres have been widely studied as environment-friendly alternative to synthetic ones in composite manufacturing; they can be considered as reinforcement of geopolymeric foams for use as insulating materials. In this regard, the paper focuses on lightweight geopolymers reinforced with hemp fibre grids.
Galzerano, B +5 more
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