Journal ArticleDOI
Effect of fly ash characteristics on delayed high-strength development of geopolymers
Jeong Gook Jang,Haeng-Ki Lee +1 more
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In this paper, the authors investigated the effect of fly ash characteristics on the strength development of a fly ash-based geopolymer, and reported an observation of delayed high-strength development of geopolymers.About:
This article is published in Construction and Building Materials.The article was published on 2016-01-15. It has received 74 citations till now. The article focuses on the topics: Geopolymer & Fly ash.read more
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Recycling of phosphate mine tailings for the production of geopolymers
TL;DR: In this article, the potential reuse of phosphate sludge as a partial replacement of fly ash and metakaolin for the production of geopolymers was investigated using an experimental design of response surface methodology (DOE) using X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy.
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Multi-response optimization using Taguchi-Grey relational analysis for composition of fly ash-ground granulated blast furnace slag based geopolymer concrete
TL;DR: In this paper, Taguchi-Grey relational analysis was used to investigate and optimize the effect of ground granulated blast furnace slag (GGBS) replacement, water to geopolymer solids (W/GPS) ratio, molarity of NaOH solution, binder content and Na2SiO3 to NaO3 solution ratio on setting time, workability and compressive strength of fly ash - GGBS based GPC.
Journal ArticleDOI
Alkali-activated mortars blended with glass bottle waste nano powder: Environmental benefit and sustainability
Ghasan Fahim Huseien,Ghasan Fahim Huseien,Hussein K. Hamzah,Abdul Rahman Mohd Sam,Nur Hafizah A. Khalid,Kwok Wei Shah,Dan Paul Deogrescu,Jahangir Mirza +7 more
TL;DR: In this article, a fly ash-based alkali-activated mortars (AAM) was used to replace ground blast furnace slag (GBFS) for glass bottles waste Nano powder (BGWNP) by replacing ground blast furnaces with fly ash based alkali activated mortars.
Journal ArticleDOI
Alkaline fused phosphate mine tailings for geopolymer mortar synthesis: Thermal stability, mechanical and microstructural properties
TL;DR: In this article, the efficiency of alkaline fusion method to enhance the geopolymeric reactivity of phosphate mine tailings was investigated by XRD measurement, and the microstructure as well as the mechanical behavior of prepared geopolymer mortars were investigated using compressive strength test and EDS/SEM analysis.
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Correlation of microstructural and mechanical properties of geopolymers produced from fly ash and slag at room temperature
TL;DR: In this article, high strength fly ash (FA)-based geopolymer pastes containing slag were characterized by means of X-ray diffraction (XRD), thermogravimetry (TGA), and environmental scanning electron microscopy (ESEM).
References
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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
TL;DR: 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.
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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.
Journal ArticleDOI
A review on the utilization of fly ash
TL;DR: In this article, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed.
Journal ArticleDOI
Alkali-activated fly ashes: A cement for the future
TL;DR: In this paper, the mechanism of activation of fly ash with highly alkaline solutions is described, and the product of the reaction is an amorphous aluminosilicate gel having a structure similar to that of zeolitic precursors.
Journal ArticleDOI
Understanding the relationship between geopolymer composition, microstructure and mechanical properties
Peter Duxson,John L. Provis,Grant C. Lukey,Seth W. Mallicoat,Waltraud M. Kriven,Jannie S.J. van Deventer +5 more
TL;DR: In this paper, a mechanistic model accounting for reduced structural reorganization and densification in the microstructure of geopolymer gels with high concentrations of soluble silicon in the activating solution has been proposed.