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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Fly ash-based geopolymer as a novel photocatalyst for degradation of dye from wastewater
Yao Jun Zhang,Licai Liu +1 more
TL;DR: In this article, fly ash-based geopolymer catalyst was used as a photocatalyst for degradation of methylene blue (MB) dye from wastewater, which is composed of nanoparticulates with an average particle size of about 50nm.
Journal ArticleDOI
Mix-design and characterization of alkali activated materials based on metakaolin and ladle slag
Maria Chiara Bignozzi,Stefania Manzi,Isabella Lancellotti,Elie Kamseu,Luisa Barbieri,Cristina Leonelli +5 more
TL;DR: In this paper, the results show that ladle slags are activated by alkaline solutions and participate in gels formation, and an optimization in terms of ladle sag content and the coexistence of different types of gels (3D aluminosilicate, C-S-H and Ca-rich aluminosailicate) have been envisaged.
Journal ArticleDOI
Effect of granulated lead smelter slag on strength of fly ash-based geopolymer concrete
TL;DR: In this paper, the authors present an experimental study on the manufacture and behaviour of geopolymer concrete produced with a combination of granulated lead smelter slag (GLSS) and fly ash.
Journal ArticleDOI
High tensile strength fly ash based geopolymer composite using copper coated micro steel fiber
TL;DR: In this paper, the effects of micro steel fibers (MSF) incorporation on mechanical properties of fly ash based geopolymer was investigated at different volume ratio of matrix, and the composite was compared in terms of fresh state by flow measurement and hardened state by variation of shrinkage over time to assess performance of the composites subjected to flexural and compressive load.
Journal ArticleDOI
Flexural performance and toughness of hybrid steel and polypropylene fibre reinforced geopolymer
TL;DR: In this article, the effects of steel and polypropylene fiber hybridization on the flexural performance of fiber-reinforced geopolymer were investigated, and two hybridization systems were investigated: replacement and addition systems.
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.