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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Immobilisation of lead smelting slag within spent aluminate-fly ash based geopolymers.
TL;DR: This study presents the solidification/stabilisation and immobilisation of lead smelting slag by its incorporation in coal fly ash - blast furnace slag based geopolymers and explores the use of a spent aluminium etching solution (AES) as geopolymer activator instead of the commonly used silicate solutions.
Journal ArticleDOI
Thermal properties of novel binary geopolymers based on metakaolin and alternative silica sources
Mónica A. Villaquirán-Caicedo,Ruby Mejía de Gutiérrez,Soumitra Sulekar,Calvin Davis,Juan C. Nino +4 more
TL;DR: In this paper, the thermal properties of metakaolin and alternative silica-based activators were evaluated and the results showed that they constitute a better ecological choice because of the type of source of alkaline activator making their production environmentally friendly.
Journal ArticleDOI
Methods of curing geopolymer concrete: a review
TL;DR: In this article, the authors discuss the different methods of curing of geopolymer concrete and figure out the best method of curing for different conditions of curing, and reveal that condition of curing has a good influence on the mechanical properties of polygonal concrete.
Journal ArticleDOI
Kaolin-based geopolymers with various NaOH concentrations
C.Y. Heah,Hussin Kamarudin,A.M. Mustafa Al Bakri,M. Bnhussain,Musa Luqman,I. Khairul Nizar,C.M. Ruzaidi,Yun Ming Liew +7 more
TL;DR: In this article, the effect of Na2O concentration on the compressive strength of kaolin geopolymers at 80°C for 1, 2, and 3 d was analyzed.
Journal ArticleDOI
Effect of elevated temperature on the properties of geopolymer synthesized from calcined ore-dressing tailing of bauxite and ground-granulated blast furnace slag
Jiayuan Ye,Wensheng Zhang,Shi Di +2 more
TL;DR: In this paper, a geopolymer was prepared using calcined ore-dressing tailing of bauxite and ground-granulated blast furnace slag, and the physical evolutions, including the appearance, length, compressive strength and porosity, and chemical processes involving the decomposition and crystallization of specimens after heating were investigated.
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.