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
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Characterisation of cotton fibre-reinforced geopolymer composites
TL;DR: In this paper, the physical, mechanical and fracture behaviour of fly-ash based geopolymer reinforced with cotton fibres (0.3-1.0 ) was described, and it was shown that the appropriate addition of cotton fiber can improve the mechanical properties of the composite.
Journal ArticleDOI
The suitability of thermally activated illite/smectite clay as raw material for geopolymer binders
TL;DR: In this paper, the suitability of illite/smectite clay to form a geopolymer after thermal and alkaline activation was investigated and the performance of the binder in terms of strength as well as the phase composition was studied.
Journal ArticleDOI
Potential application of geopolymers as protection coatings for marine concrete I. Basic properties
Zuhua Zhang,Xiao Yao,Huajun Zhu +2 more
TL;DR: In this article, a compound geopolymer was developed by adding 10% granulated blast furnace slag (GBFS) in metakaolin as starting materials at the liquid/solid ratio of 0.60ml/g.
Journal ArticleDOI
Mechanical and microstructural characterization of fiber reinforced fly ash based geopolymer composites
TL;DR: In this paper, an experimental investigation was carried out to study some mechanical and microstructural characteristics of fly ash based geopolymer mortars reinforced with three different fiber types: steel, polypropylene, and polyvinyl alcohol fibers.
Journal ArticleDOI
The mechanisms of heavy metal immobilization by cementitious material treatments and thermal treatments: A review.
TL;DR: Converting heavy metals into more stable phases during immobilization processes should be a common way to enhance the immobilization effect of these immobilization methods.
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.