Journal Article10.1016/J.CEMCONRES.2005.03.003
Composition and Microstructure of Alkali Activated Fly Ash Binder: Effect of the Activator
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TL;DR: In this paper, the relationship between the mineralogical and microstructural characteristics of activated fly ash mortars and its mechanical properties has been established, and the results of the investigation show that in all cases (whatever the activator used) the main reaction product formed is an alkaline aluminosilicate gel, with low-ordered crystalline structure.
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About: This article is published in Cement and Concrete Research. The article was published on 01 Oct 2005. The article focuses on the topics: Fly ash & Aluminosilicate.
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Citations
Influence of Granulated Silico-Manganese Slag on Compressive Strength and Microstructure of Ambient Cured Alkali-Activated Fly Ash Binder
S.K. Nath,Sanjay Kumar +1 more
TL;DR: In this paper, the influence of slag on reactivity of the blends was monitored by isothermal conduction calorimetry and structural reorganizations of the resultant binder were detected by peak shifting in Fourier transform infrared spectroscopy study.
52
Fly ash as photo-Fenton catalyst for the degradation of amoxicillin
TL;DR: In this article, fly ash, a coal combustion residue from a thermoelectric company in Colombia, has been used as heterogeneous catalyst in a photo-Fenton process to eliminate amoxicillin.
52
Influence of processing temperature on the reaction product and strength gain in alkali-activated fly ash
TL;DR: The roles of temperature and curing periods on product formation and strength gain in alkali activation of low-calcium siliceous fly ash are evaluated in this paper, where an initial curing temperature of 40°C and higher is shown to lead to formation of reaction product.
52
Reuse of waste sandstone sludge via alkali activation in matrices of fly ash and metakaolin
TL;DR: In this paper, the authors investigated the possibility of reusing sludge from sandstone sawing in alkaline cements, in particular, the behavior towards alkali activation process of Pietra Serena sludge (sPS), either alone or in binary mixtures with class F fly ashes and metakaolin.
51
Re-examining the suitability of high magnesium nickel slag as precursors for alkali-activated materials
TL;DR: In this article, the suitability of high-magnesium nickel slag (HMNS) for the production of alkali-activated materials (AAMs) was investigated by comparatively investigating the reactivity of four different sourced HMNSs and analyzing impacts of the magnesium sources in HMNS on the reaction products of AAMs.
51
References
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.
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Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers
TL;DR: In this article, a statistical study of the effect on the polymerization process of the molar ratio of the component oxides and the water content of the mixture showed the latter to be a critical parameter.
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Synthesis of zeolites from coal fly ash: an overview
Xavier Querol,Natalia Moreno,J.C Umaña,Andrés Alastuey,E. Hernández,Angel Lopez-Soler,F. Plana +6 more
TL;DR: An overview on the methodologies for zeolite synthesis from CFA, and a detailed description of conventional alkaline conversion processes, with special emphasis on the experimental conditions to obtain high cation exchange capacity (CEC) zeolites is given in this article.
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Microstructure Development of Alkali-Activated Fly Ash Cement: A Descriptive Model
TL;DR: In this paper, the microscopic study of a set of alkali-activated and thermally cured fly ash samples enabled the authors to establish a descriptive model for the microstructural development of fly ash-based cementitious geopolymers.
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Characterisation of fly ashes. Potential reactivity as alkaline cements
TL;DR: In this article, a representative group of Spanish fly ashes has been characterised in order to determine its capacity for being alkali activated and give place to a material with cementitious properties.
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