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
Rockwool waste in fly ash geopolymer composites
TL;DR: In this article, a combined mixing and dissolution method was used to prepare unrecyclable mineral wool waste for geopolymerization, with up to 33% inclusion in the final product.
Journal ArticleDOI
Fire resistance of geopolymer concrete: A critical review
TL;DR: In this paper , a critical literature review of current updates related to the fire performance of RF-reinforced GPC subjected to elevated temperatures and during fires is urgently necessary, conducting critical reviews on the type of RFs, spalling mechanism, physical inspection and properties of the RF-RGPCs.
Journal ArticleDOI
Optimum utilization of waste foundry sand and fly ash for geopolymer concrete synthesis using D-optimal mixture design of experiments
TL;DR: In this paper, the authors examined the partial replacement of fine aggregates with waste foundry sand (WFS) and fly ash, process by-products, to synthesize geopolymer concrete (GPC).
Journal ArticleDOI
Recycling of geopolymer waste: Influence on geopolymer formation and mechanical properties
TL;DR: In this paper, the effect of the incorporation of the geopolymer wastes in different formulations and their effect on the properties of the final materials was investigated. But the results were limited to three compositions differing in the used alkaline solution and the amount of metakaolin added.
Journal ArticleDOI
Study of the binary system fly ash/sugarcane bagasse ash (FA/SCBA) in SiO2/K2O alkali-activated binders
Vinicius N. Castaldelli,J.C.B. Moraes,Jorge Luís Akasaki,J. L. P. Melges,José Monzó,M.V. Borrachero,Lourdes Soriano,Jordi Payá,Mauro Mitsuuchi Tashima +8 more
TL;DR: In this article, fly ash (FA) and sugarcane bagasse ash (SCBA) residues were obtained from a combustion process to generate energy, the former from coal and the latter from the bagasse of the sugar cane industry.
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.