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
Critical review on fly‐ash based geopolymer concrete
Journal ArticleDOI
High temperature resistance of a very high volume fly ash cement paste
TL;DR: The physical and chemical changes taking place in a very high volume fly ash cement paste (FAN-4) following exposure to temperatures up to 1000°C are presented in this paper.
Journal ArticleDOI
Mechanical behaviour at high temperature of alkali-activated aluminosilicates (geopolymers)
TL;DR: In this article, the effect of temperature on the mechanical strength (in both in vivo and post-exposure trials) of two alkaline cements (without OPC) was determined.
Journal ArticleDOI
How does Na, K alkali metal concentration change the early age structural characteristic of kaolin-based geopolymers
Ayi Djifa Hounsi,Gisèle Laure Lecomte-Nana,Gnande Djeteli,Philippe Blanchart,Dovenam Alowanou,Pali Kpelou,Kossi Napo,Gado Tchangbedji,Mirela Praisler +8 more
TL;DR: In this article, the influence of the alkaline activator concentration of kaolin-based geopolymers on the compressive strength at the curing early age regarding the structural characteristics was investigated.
Journal ArticleDOI
Fabrication, microstructural and mechanical characterization of Luffa Cylindrical Fibre - Reinforced geopolymer composite
Mazen Alshaaer,Mazen Alshaaer,Saida Abu Mallouh,Juma’a Al-Kafawein,Yasair S.S. Al-Faiyz,T. Fahmy,Abderrazek Kallel,Abderrazek Kallel,Fernando Rocha +8 more
TL;DR: In this article, the preparation, microstructure, density and mechanical properties of new geopolymer composites (LG-composite) that are unidirectionally and randomly reinforced with 10-vol% natural Luffa Cylindical fibres (LCF) were 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.