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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Ultrahigh Self-Sensing Performance of Geopolymer Nanocomposites via Unique Interface Engineering
TL;DR: The underlying mechanisms on the electrical signal change with respect to ionic conduction and electronic conduction were explored and correlated to the self-sensing performance, and the uniform dispersion of CNTs and good interaction between C NTs and geopolymer matrix contributed to the improvement in flexural and compressive strengths.
Journal ArticleDOI
Toward clean cement technologies: A review on alkali-activated fly-ash cements incorporated with supplementary materials
TL;DR: In this paper, the main trends in the development of the modern cement industry, including the alkali activation technology, are reviewed. And the feasibility for improvement of the structures and properties of mixed AAFA.
Journal ArticleDOI
Development of Lightweight Rubberized Geopolymer Concrete by Using Polystyrene and Recycled Crumb-Rubber Aggregates
TL;DR: In this article, an environmentally friendly concrete is of high interest to develop because the production of portland cement as the main binder of conventional concrete is associated with generating a lar lar...
Journal ArticleDOI
Use of modified bauxite residue-based porous inorganic polymer monoliths as adsorbents of methylene blue
TL;DR: In this paper, a modified bauxite residue (BR) was used as the reactive fraction with the objective of using them as adsorbents for methylene blue (MB) from synthetic wastewater.
Journal ArticleDOI
Microstructural and 29Si MAS NMR spectroscopic evaluations of alkali cationic effects on fly ash activation
TL;DR: The influence of alkali cation (M = Na or K) on the geopolymerization of fly ash is evaluated in this paper, where NaOH, KOH (4,M and 8,M), or Na/K silicates (SiO2/M2O 2.0) are used as activators.
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.