Journal ArticleDOI
Spectroscopic studies of fly ash-based geopolymers.
TLDR
Fly-ash based geopolymers with different contents of alkali-activator and water were prepared and hydroxysodalite have been identified as a crystalline product of geopolymerization.About:
This article is published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.The article was published on 2018-03-13. It has received 75 citations till now. The article focuses on the topics: Geopolymer & Fly ash.read more
Citations
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Geopolymer-zeolite composites: A review
TL;DR: In this article, a review article highlights advances in the field of geopolymer-zeolite composites manufacturing and applications, and the resistance of zeolites in geopolymers, methods of their detection and effect of their presence on the properties of hybrid materials are discussed.
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Correlation between pore structure, compressive strength and thermal conductivity of porous metakaolin geopolymer
TL;DR: In this article, the effect of mixing parameters (that are, alkali concentration, AA ratio, and MK/AA ratio) on the thermal conductivity of metakaolin geopolymers was investigated.
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Microstructure and phase evolution of alkali-activated steel slag during early age
TL;DR: In this paper, the early age evolution of alkali-activated steel slag under curing condition of 60°C was investigated and the results showed that the densifying microstructure of aluminosilicate gel significantly increases, attributing to the increasing of reaction degree due to the formation of Si-O-T.
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Application of geopolymers for treatment of water contaminated with organic and inorganic pollutants: State-of-the-art review
Marouane El Alouani,Hamid Saufi,Ghizlane Moutaoukil,Saliha Alehyen,Behzad Nematollahi,Walid Belmaghraoui,Mhamed Taibi +6 more
TL;DR: In this article, the authors provide a review on application of geopolymer materials for treatment of waters and wastewaters contaminated with organic pollutants (such as dyes), and inorganic pollutants such as heavy metals.
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Toward clean cement technologies: A review on alkali-activated fly-ash cements incorporated with supplementary materials
TL;DR: In this paper, the main trends in the development of the modern cement industry, including the alkali activation technology, are reviewed. And the feasibility for improvement of the structures and properties of mixed AAFA.
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.
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Mechanism of geopolymerization and factors influencing its development: a review
Divya Khale,Rubina Chaudhary +1 more
TL;DR: In this paper, the authors present the work carried out on the chemical reaction, the source materials, and the factor affecting geopolymerization, and demonstrate that certain mix compositions and reaction conditions such as Al2O3/SiO2, alkali concentration, curing temperature with curing time, water/solid ratio and pH significantly influences the formation and properties of a geopolymers.
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Effect of synthesis parameters on the mechanical properties of fly ash-based geopolymers
TL;DR: In this paper, the effect of the water, sodium hydroxide and sodium silicate contents in the synthesis of fly ash-based geopolymers on their compressive strength is investigated.
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Mid-infrared spectroscopic studies of alkali-activated fly ash structure
TL;DR: In this paper, the authors used infrared spectroscopic techniques to acquire a deeper understanding of mid-range order in the alkaline aluminosilicate (zeolite precursor) formed in the activation of fly ash.
Journal ArticleDOI
Environmental, physical and structural characterisation of geopolymer matrixes synthesised from coal (co-)combustion fly ashes
E. Álvarez-Ayuso,Xavier Querol,F. Plana,Andrés Alastuey,Natalia Moreno,Maria Izquierdo,Oriol Font,Teresa Moreno,Sergi Díez,Enric Vázquez,Marilda Barra +10 more
TL;DR: It was found that synthesised geopolymer matrixes were only effective in the chemical immobilisation of a number of elements of environmental concern contained in fly ashes, reducing (especially for Ba), or maintaining their leachable contents after the geopolymisation process, but not for those elements present as oxyanions.