Utilization of fly ash as building material admixture: Basic …
The addition of fly ash has a great influence on the fluidity, mechanics and anti-carbonation properties of concrete. Behl et al. [17] found that when fly ash was added to fly ash concrete at a dosage of 20%, the acceptable crushing strength of concrete could be satisfied within 7–28 days. At the same time, before determining the use of fly ash, the composition and …
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Assessment and comparison of three high-aluminum fly ash utilization
In this study, three high-aluminum fly ash utilization methods in Mongolia were assessed and compared based on the concept of eco-efficiency. The environmental assessment was conducted in accordance with life-cycle assessment principles, and a monetization-weighting approach was applied to obtain social willingness-to-pay as a reflection of ...
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Feasibility Study of Magnesium Slag, Fly Ash, and Metakaolin to …
To achieve the efficient utilization of magnesium slag, this study investigates the use of magnesium slag, fly ash, and metakaolin as partial substitutes for cement in cementitious materials. The reactivity of these materials is assessed based on the compressive strength of mortar. The response surface methodology is employed to explore the influence of material …
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Advances in studies investigating the comprehensive utilization of …
This makes coal gangue a viable alternative to materials such as fly ash, slag, and metakaolin, thus making it a crucial ... We analyzed 200 publications from 2004 to 2023 (Fig. 2), identifying three distinct stages of research activity. From 2004 to 2012, the number of publications related to utilization of coal gangue remained in a "flat ...
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The Comprehensive Utilization of Fly Ash
Download Citation | The Comprehensive Utilization of Fly Ash | China is a big country of production of fly ash, in this paper, the development status of China's coal ash and its comprehensive ...
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Applications of fly ash for CO2 capture, utilization, and storage
In aqueous systems, fly ash reacts with CO 2 in 3 stages as described by Back [191] and shown in equations 8 – 11. In the first stage, the dissolution of lime (CaO) occurs, …
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Utilization of Fly Ash Waste in the Cement Industry and its
However, there are several technologies and fly ash processing methods that can reduce the environmental impact of cement industry production activities, such as the use of fly ash as raw material ...
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A comprehensive review on the applications of coal fly ash
The present review first describes the generation, physicochemical properties and hazards of coal fly ash at the global level, and then focuses on its current and potential …
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The Bibliometric Analysis and Review of the Fly Ash Resource Utilization
This is because fly ash resource utilization has entered the first research hotspot, and Europe, the USA, and other developed countries have opened a large number of research on waste incineration. In 2008, the number of articles on fly ash resource utilization reached 370, reaching the second research climax.
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Research Progress on the Treatment and Recycling Technology …
Because the chemical composition of fly ash is similar to that of building materials, some scholars have divided the utilization of fly ash into four categories and nine ways (Ferreira et al. 2003), fly ash is also called "misplaced resources". In 2020, China issued the first HJ 1134-2020 technical specification for pollution control of fly ...
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Comparison and Summary of Relevant Standards for …
The comprehensive utilization of fly ash of China can be improved from the following points: the indexes investigated in standards should reflect and conform to the particularity of …
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A review on fly ash utilization
Present review begins with physicochemical properties and production fly ash. Later it concentrates on its utilization in various fields like construction sector, composites and …
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Utilization of coal fly ash in China: a mini-review on challenges …
The rapid economic development in China places a large demand for energy, and as a result, thermal power plants in China are producing an enormous amount of coal fly ash (CFA) which causes severe environmental pollution. This paper briefly describes the current production and utilization status of CFA in China and identifies the challenges confronting …
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Research status of comprehensive utilization of coal-based solid …
Fig. 2 shows the basic situation of comprehensive utilization of three typical CSW (coal gangue, fly ash and gasification slag) in China from 2011 to 2021. It can be found that the output and comprehensive utilization of coal gangue and fly ash were fluctuating like coal output, but the overall trend was increasing.
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Enhancing Concrete Performance through Sustainable Utilization …
Utilization of Class-C and Class-F Fly Ash: A Comprehensive Review Zehra Funda Akbulut 1, *, Demet Yavuz 2, T aher A. T awfik 3,4, Piotr Smarzewski 5, * and Soner Guler 2
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Comprehensive Utilization of Fly Ash | Scientific.Net
The comprehensive utilization of fly ash in new ways to explore, Hebi:7th Chinese coal fly ash and slag (steel slag) and coal gangue processing and application technology exchange meeting（2009）（In Chinese）
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Review A review on fly ash high-value synthesis utilization and its
As a common industrial solid waste, fly ash requires proper processing and utilization to alleviate environmental pressure. In contrast to earlier low-value treatment methods for fly ash, such as its use in construction materials, it is more practical to explore the high-value utilization of fly ash, considering its elemental ingredient and morphological characteristics.
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Brief analysis on present situation of comprehensive utilization of fly
The novel class F fly ash-based geopolymer, largely made of fly ash from the coal solid waste, was used as a kind of grouting material in the coal and electricity-integrated mine from which the solid … Expand
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Mechanisms of mechanochemical activation during comprehensive
With the rapid development of China's economy, the consumption of energy is dramatic increasing. Many large-scale energy sites are established in the northern part of Shanxi province and middle-western part of Inner Mongolia of China (Dai et al., 2010, Yao et al., 2014).With the utilization of high-alumina coal (HAC) in these places, approximately 50 million …
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Progress and Prospect of Research on Comprehensive Utilization …
The paper introduces the physicochemical properties and classification of fly ash in China, summarizes in detail the methods and research status of the recovery and high value …
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Evaluation on reactivity of fly ash from different sources in alkali
Coal combustion in thermal power plants yields fly ash as its predominant solid residue, accounting for roughly 60–88 % of all combustion-derived outputs [1].The global annual yield of fly ash is projected to range from 0.8 to 1.0 billion tons, a figure that is poised for escalation in tandem with the escalating demand for affordable electricity in emerging …
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A review on fly ash utilization
Utilization of fly ash was increased by 3% in 1993 (of about 40 million tons produced), to nearly 15% (of about 95 million tons produced) in 2000. Anjani R K et al. [19] have reported that approximately 40% of the total global energy is produced from coal. This continuous use of coal to attain growing energy needs resulted in exponential ...
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Study on the Mechanical Properties of Fly-Ash-Based Light …
Our research group, together with Coal and Electricity Company, Ltd, belonging to the China Energy Investment Group, conducted research from 2018 to 2020 on the comprehensive utilization of fly ash from a mine pit in the number one coal mine in Dananhu Lake, for the purpose of providing solutions to the problem of utilization of fly ash in a ...
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Treatment of municipal solid waste incineration fly ash: State-of …
Treatment of municipal solid waste incineration fly ash: State-of-the-art technologies and future perspectives. ... thus promoting the comprehensive utilization of MSWI FA and other by-products. ... Quick strength development in early stage (7-d). Unspecified. Main mineral phases are Ca(OH) 2, AFt and C 3 A·CaCl 2 ·10H 2 O.
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High-volume utilization of circulating fluidized bed fly ash for the
Circulating fluidized bed fly ash (CFA) is a waste emitted from coal combustion process in circulating fluidized bed boilers [1].Unlike ordinary pulverized coal furnace fly ash (PCFA), CFA is a poorly spherical mesoporous particle with high surface harshness [2], [3].In terms of mineral composition, CFA contains CaSO 4 and is lacking in mullite, resulting in a …
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Enhancing the sustainability of geotechnical engineering with
A study also indicates that the Estimates fly ash utilization program (FAUP) specifies that the coal supplied to thermal power plants reached 686.34 million tons in 2020–2021, resulting in a substantial fly ash production of 232.56 million tones over the same year. The Ministry of Power, Government of India, projects an annual coal ...
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Enhancing Concrete Performance through …
Integrating class-C and class-F fly ash (FA) as supplementary cementitious materials (SCMs) in concrete offers a promising pathway for sustainable construction practices. This study explores the pivotal role of FA in …
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A review on the utilization of fly ash
Coal fly ash is a cheap absorbent for dry-type FGD. Fly ash recycling in the flue gas desulphurization process has shown promising results. Fly ash treated with calcium hydroxide has been tested as a reactive adsorbent for SO 2 removal [24]. A mixture of fly ash and calcium hydroxide for desulphurization was also studied by Davini [25], [26].
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Energy effective utilization of circulating fluidized bed fly ash to
Utilization of fly ash blends from pulverized coal and fluidized bed combustions in geopolymeric materials. ... A comprehensive overview of fibre-reinforced gypsum-based composites (FRGCs) in the construction field ... Synthesis of SiO 2-Al 2 O 3 composite aerogel from fly ash: a low-cost and facile approach. J. Sol-Gel Sci. Technol., 93 (2019 ...
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A Review of Coal Fly Ash Utilization: Environmental, Energy, and
This article describes various methods of using fly ash. Fly ash can be used in the cement industry, as a filler in materials, in zeolite synthesis, in cenosphere separation, in agriculture, in ...
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