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
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Journal ArticleDOI
Mechanical and durability properties of a soil stabilised with an alkali-activated cement
TL;DR: In this paper, a silty sand was stabilised with an alkali-activated cements (AAC) synthesised from low calcium fly ash and an alkaline solution made from sodium silicate and sodium hydroxide.
Dissertation
Shear and bond behaviour of reinforced fly ash-based geopolymer concrete beams
TL;DR: In this paper, the bond performance of fly ash-based geopolymer concrete and reinforcing bars in tensile splices in beams was investigated and a good correlation between test and analytical results were found.
Journal ArticleDOI
Development of a high strength fly ash-based geopolymer in short time by using microwave curing
TL;DR: In this article, an experimental program was conducted to investigate the effect of microwave curing on the strength of geopolymer, and the results showed that the compressive strength of pastes cured in microwave oven was superior to those of the control cured in a conventional oven at 90 and 120°C for the same period.
Journal ArticleDOI
Influence of microcapsule size and shell polarity on thermal and mechanical properties of thermoregulating geopolymer concrete for passive building applications
Vinh Duy Cao,Vinh Duy Cao,Shima Pilehvar,Shima Pilehvar,Carlos Salas-Bringas,Anna M. Szczotok,Anna M. Szczotok,Luca Valentini,Manuel Carmona,Juan F. Rodríguez,Anna-Lena Kjøniksen +10 more
TL;DR: In this paper, microencapsulated phase change materials (MPCM) were added to geopolymer concrete (GPC) for utilization as a thermal energy storage concrete for passive building applications.
Journal ArticleDOI
Influence of the initial water content in flash calcined metakaolin-based geopolymer
TL;DR: In this paper, the influence of the initial amount of water in metakaolin-based geopolymer on some of its properties in the hardened state was assessed and it was found that the majority of this water was not bonded to the structure.
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.