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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Characterization of geopolymers prepared using powdered brick
Jan Fořt,Radimír Novotný,Eva Vejmelková,Anton Trník,Anton Trník,Pavla Rovnaníková,Martin Keppert,Vojtěch Pommer,Robert Černý +8 more
TL;DR: In this paper, several geopolymer mixes are prepared using waste brick in powdered form, while different alkaline activators and curing conditions are initialized and evaluated, and the results show that the reaction rate at early age decreases with the increasing silicate modulus as well as with the rise of curing temperature.
Journal ArticleDOI
Innovative concretes for low-carbon constructions: a review
Antonella D'Alessandro,Claudia Fabiani,Anna Laura Pisello,Filippo Ubertini,A. Luigi Materazzi,Franco Cotana +5 more
TL;DR: The article reviews the recent research contributions and future promising perspectives regarding innovation in concrete technologies for low-carbon applications in buildings by identifying three main research lines related to the enhancement of physical and mechanical properties of concrete.
Journal ArticleDOI
Effect of curing conditions on the microstructure and mechanical performance of geopolymers derived from nanosized tubular halloysite
TL;DR: In this paper, the effects of curing temperatures and curing environments on the microstructure and the development of compressive strength of alkali-activated halloysite-based geopolymers were investigated.
Journal ArticleDOI
Creep properties of cement and alkali activated fly ash materials using nanoindentation technique
TL;DR: In this paper, the authors used deconvolution technique to identify the creep modulus of different phases of AAFA matrices and showed that partly-activated, nonactivated slag and nonactivated compact glass phases are leading the creep behaviour of AA FA samples due to their high creepmodulus.
Journal ArticleDOI
Recent advances in carbon nanotube-geopolymer composite
Su Zijian,Wei Hou,Zengqing Sun +2 more
TL;DR: In this article, the state-of-the-art progress in the fabrication and characterization of carbon nanotube-geopolymer composites, including dispersion technologies, functional characteristics and smart features of resultant composites.
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.