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
TLDR
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.Abstract:
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. The fundamental chemical and structural characteristics of geopolymers derived from metakaolin, fly ash and slag are explored in terms of the effects of raw material selection on the properties of geopolymer composites. It is shown that the raw materials and processing conditions are critical in determining the setting behavior, workability and chemical and physical properties of geopolymeric products. The structural and chemical characteristics that are common to all geopolymeric materials are presented, as well as those that are determined by the specific interactions occurring in different systems, providing the ability for tailored design of geopolymers to specific applications in terms of both technical and commercial requirements.read more
Citations
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Journal ArticleDOI
Cesium immobilization in nitrate-bearing metakaolin-based geopolymers
E. Ofer-Rozovsky,M. Arbel Haddad,Gabriela Bar-Nes,E.J.C. Borojovich,A. Binyamini,A. Nikolski,Amnon Katz +6 more
TL;DR: In this article, the authors examined the immobilization of cesium in nitrate-bearing geopolymers with low Si/Al ratio (SiO2:Al2O3 Geopolymers were prepared by activating metakaolin with a mixed NaOH-CsOH solution containing NaNO3.
Journal ArticleDOI
Incorporation of glass fibre fabrics waste into geopolymer matrices: An eco-friendly solution for off-cuts coming from wind turbine blade production
Rui M. Novais,João Carvalheiras,M.N. Capela,Maria Paula Seabra,Robert C. Pullar,João A. Labrincha +5 more
TL;DR: In this paper, an innovative and sustainable solution for glass fibre offcuts is proposed, where glass fibre fabrics (non-woven mat) produced during wind turbine blade manufacture were used to produce reinforced inorganic polymer composites.
Journal ArticleDOI
Interplay between silicate and hydroxide ions during geopolymerization
Julien Aupoil,Jean-Baptiste Champenois,Jean-Baptiste d'Espinose de Lacaillerie,Arnaud Poulesquen +3 more
TL;DR: In this article, the effects of the buffer capacity and the initial Hammett acidity function on the reactivity of metakaolin-based pastes were assessed using isothermal conduction micro-calorimetry.
Journal ArticleDOI
Influence of various metakaolin raw materials on the water and fire resistance of geopolymers prepared in phosphoric acid
TL;DR: In this article, different formulations of geopolymers were synthesized in acidic media (phosphoric acid) starting from three different raw metakaolin materials to identify compositions of interest.
Patent
Geopolymer resin materials, geopolymer materials, and materials produced thereby
TL;DR: In this article, the first material may be formed by heating and/or aging an initial initial geopolymer resin material before contacting the material with the fluid, which may break up or disintegrate the material (e.g., in response to contact with fluid and in the absence of external mechanical stress), thereby forming particles having an external dimension in a range between 1 nm and 2 cm.
References
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Journal ArticleDOI
Geopolymers : inorganic polymeric new materials
TL;DR: In the last few years, technological progress has been made in the development of new materials such as "geopolymers" and new techniques, such as ''sol-gel'' as mentioned in this paper, opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry.
Book
High-resolution solid-state NMR of silicates and zeolites
Günter Engelhardt,Dieter Michel +1 more
TL;DR: High-Resolution NMR of Solids and Adsorbed Molecules as mentioned in this paper is a well-known technique for high-resolution NMR for solids and adsorbed molecules.
Journal ArticleDOI
Industrially interesting approaches to “low-CO2” cements ☆
TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.
Journal ArticleDOI
The geopolymerisation of alumino-silicate minerals
Hua Xu,J.S.J. van Deventer +1 more
TL;DR: In this paper, the effect of mineral properties on the compressive strength of the synthesized geopolymer was investigated, and it was shown that a wide range of natural Al-Si minerals could serve as potential source materials for the synthesis of geopolymers.