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
Development of geopolymer mortar under ambient temperature for in situ applications
TL;DR: In this paper, the compressive strength of the examined mixes was found to be in the range of 40-50 MPa for 40% and 50% ground granulated blast furnace slag replacement mixtures respectively.
Journal ArticleDOI
Stabilization/solidification of a municipal solid waste incineration residue using fly ash-based geopolymers.
TL;DR: Comparison of fly ash-based geopolymer systems with classical Portland cement stabilization methods has also been accomplished, showing that the leachate pH was the most important variable for the immobilization of metals.
Journal ArticleDOI
Development of porous fly ash-based geopolymer with low thermal conductivity
TL;DR: Porous fly ash-based geopolymer material was produced using fly ash and sodium water glass as original material and H 2 O 2 as foaming agent in this paper, where the changes caused by the geopolymersization and decomposition of H 2O 2 on the properties of the final products were investigated by applying curing on geopolym mortars with different amounts of sodium waterglass (60, 80 and 100 ǫ) and H2 O 2 (4, 6 and 8 g) added at various curing temperatures.
Journal ArticleDOI
Assessing the suitability of three Australian fly ashes as an aluminosilicate source for geopolymers in high temperature applications
TL;DR: In this article, the authors report on the characterisation of fly ash from three Australian power stations in terms of elemental composition, phase composition, particle size, density and morphology, and the effect of the source fly ash characteristics on the hardened product is discussed, as well as implications for high temperature applications.
Journal ArticleDOI
Potential of geopolymer technology towards green buildings and sustainable cities
TL;DR: In this article, the potential of geopolymer technology towards green buildings and future sustainable cities with a reduced carbon footprint is outlined briefly in terms of green building and sustainable cities of the future, including coal combustion ashes, metallurgical slags, construction and demolition wastes.
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.
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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.