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
Synthesis of stoichiometrically controlled reactive aluminosilicate and calcium-aluminosilicate powders
Brant Walkley,Rackel San Nicolas,Marc-Antoine Sani,John D. Gehman,Jannie S.J. van Deventer,John L. Provis +5 more
TL;DR: In this article, an organic steric entrapment route was used to synthesize calcium-aluminosilicate powders using polyvinyl alcohol and polyethylene glycol as polymeric carriers.
Journal ArticleDOI
Effect of sodium polyacrylate on mechanical properties and microstructure of metakaolin-based geopolymer with different SiO2/Al2O3 ratio
TL;DR: In this paper, the effect of the organic polymer on the mechanical properties and microstructure of metakaolin-based geopolymers with varying SiO2/Al2O3 ratio for using organic polymer to modify geopolymer.
Journal ArticleDOI
Geopolymer Cements and Their Properties: A Review
TL;DR: Geopolymer cements are innovative binders which can be produced by the chemical action of aluminosilicate materials such as silica and alumina reacting with alkaline solution.
Journal ArticleDOI
Effect of strain rate on splitting tensile strength of geopolymer concrete
TL;DR: In this article, the splitting tensile strength of geopolymer concrete and mortar under strain rates from 10−7 s−1 to 25 s− 1 was investigated under different strain rates.
Journal ArticleDOI
Recycling of concrete waste to produce ready-mix alkali activated cement
TL;DR: In this paper, an environmentally and user friendly ready-mix alkali activated cement (RM-AAC) by thermal activation of concrete waste (CW) in the presence of sodium hydroxide (NaOH) was investigated.
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.