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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Journal ArticleDOI
Geopolymers and Their Uses: Review
D. D. Burduhos Nergis,Mohd Mustafa Al Bakri Abdullah,Petrica Vizureanu,Muhammad Faheem Mohd Tahir +3 more
TL;DR: In this article, the authors present basic information's about how to create and use geopolymers, alkaline activators and raw materials that can be used and conclusions about the feasibility of using these materials on large scale Portland cement.
Journal ArticleDOI
Effects of metakaolin addition on geopolymer prepared from natural kaolinitic clay
TL;DR: In this paper, a simple synthesis method was adopted by mixing calcined clays and metakaolins with an alkali silicate solution of the desired Si/K ratio.
Journal ArticleDOI
Geopolymer concrete as a cleaner construction material: An overview on materials and structural performances
Hemn Unis Ahmed,Lavan J. Mahmood,Muhammad Muhammad,Rabar H. Faraj,Shaker M. A. Qaidi,Nadhim Hamah Sor,Ahmed A. S. Mohammed,Azad A. Mohammed +7 more
TL;DR: A comprehensive review on the fresh, mechanical, and structural performances of GPC is presented in this article , where the authors have explored the behaviour of geopolymer concrete (GPC) as an alternative to Portland cement concrete (PCC) in micro and macro dimensions.
Journal ArticleDOI
Role of alkali cation in compressive strength of metakaolin based geopolymers
TL;DR: In this article, the compressive strength of metakaolin-based geopolymers was investigated and it was found that the difference in dissolution tendency between Na+ and K+ resulted in different morphologies.
Journal ArticleDOI
Soil stabilisation with alkali-activated agro-waste
TL;DR: In this article, the use of alkali-activated binder was evaluated to evaluate the feasibility of using this promising technique to stabilise soils. But, the results showed that the effect of the type of activator, the source binder, the curing condition and the water content of the soil on the strengthening performance of soil was evaluated according to the improvement of the unconfined compression strength.
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.