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
Drying shrinkage in alkali-activated binders – A critical review
TL;DR: In this paper, a review of the drying shrinkage behavior of slag, fly ash and metakaolin-based binders with slag precursors is presented, and different solutions to limit the shrinkage are also presented.
Journal ArticleDOI
Alkali-activated metakaolin: A short guide for civil Engineer – An overview
TL;DR: A comprehensive overview of the previous works carried out on the use of metakaolin in alkali activation can be found in this paper, where the authors present a new binders as an alternative to Portland cement (PC).
Journal ArticleDOI
Ambient Temperature Drying Shrinkage and Cracking in Metakaolin-Based Geopolymers
Carsten Kuenzel,Luc J. Vandeperre,Shane Donatello,Aldo R. Boccaccini,Aldo R. Boccaccini,Christopher R. Cheeseman +5 more
TL;DR: In this article, the effect of varying the geopolymer composition (water content, Si:Al ratio, Na: Al ratio, and Na + or K + cations) on the sensitivity to ambient temperature drying shrinkage is reported.
Journal ArticleDOI
Effect of water absorption on the mechanical properties of cotton fabric-reinforced geopolymer composites
Thamer Alomayri,Thamer Alomayri,Hasan Assaedi,Hasan Assaedi,Faiz Uddin Ahmed Shaikh,It Meng Low +5 more
TL;DR: In this article, the effect of water absorption on the mechanical and physical properties of CF reinforced geopolymer composites is investigated, and it is shown that the magnitude of maximum water uptake and diffusion coefficient is increased with an increase in fibre content.
Journal ArticleDOI
Effect of Calcium Additions on N-A-S-H Cementitious Gels
TL;DR: In this article, the properties of two N-A-S-H gels (with Si/Al = 1 and 2) synthesized in highly alkaline media, in the presence of calcium are reported.
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.