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
More filters
Journal ArticleDOI
Water retention properties of porous geopolymers for use in cooling applications
Kiyoshi Okada,Asami Ooyama,Toshihiro Isobe,Yoshikazu Kameshima,Akira Nakajima,Kenneth J. D. MacKenzie +5 more
TL;DR: A series of geopolymers were prepared with varying ratios of sodium silicate, metakaolinite, NaOH and H 2 O and their porous properties, water retention and mechanical properties were determined, to develop materials for counteracting heat island effects as discussed by the authors.
Journal ArticleDOI
Durability performances of wollastonite, tremolite and basalt fiber-reinforced metakaolin geopolymer composites under sulfate and chloride attack
TL;DR: In this paper, the compressive strength, morphological evolution, microstructure and pore structure of the geopolymer composite specimens were examined to evaluate their durability performance, and the results showed that the mix of a metakaolin with addition of 5% WS, 5% TR, and 2% SBF exhibits the highest compressive strengths in the studied range of mixture design.
Journal ArticleDOI
Recent developments on inorganic polymers synthesis and applications
TL;DR: An overview of advances in geopolymers formed by the alkaline activation of aluminosilicates is presented with their technological and commercial potentials in this article, where some recent applications of geopolymer in the fields of building materials, fire resistant materials, thermal insulation and purification are presented.
Journal ArticleDOI
Geopolymers from Algerian metakaolin. Influence of secondary minerals
TL;DR: In this paper, the influence of secondary phases (illite, quartz) on the geopolymerization reaction of metakaolin has been investigated by comparing two metakaolins, one prepared from a pure kaolinite and the other from illite- and quartz-containing Algerian kaolin from the Tamazert region, respectively.
Journal ArticleDOI
Application of alkali-activated materials for water and wastewater treatment: a review
Tero Luukkonen,Tero Luukkonen,Anne Heponiemi,Hanna Runtti,Janne Pesonen,Juho Yliniemi,Ulla Lassi,Ulla Lassi +7 more
TL;DR: Alkali-activation (or geopolymer) technology has gained a great deal of interest for its potential applications in water and wastewater treatment during the last decade as mentioned in this paper, and a comprehensive evaluation of the rapidly growing prospects of alkali activation technology in water-and wastewater treatment is presented in this paper.
References
More filters
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.