Fly Ash the Status of Resource-Oriented Utilization in Construction Material

Yue, Zhi; Chen, Juan Nong

doi:10.4028/www.scientific.net/amr.753-755.628

Cited by 5 publications

(3 citation statements)

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“…Fly ash can be used as a resource in construction materials, such as blocks, bricks, and paving. Its properties, such as pozzolanic property, fineness, and lightweight, make it suitable for these applications [66][67][68]. Fly ash can also be used as a soil amendment to replace fertilizers and lime, improving soil properties and increasing crop yields [69].…”

Section: Fly Ashmentioning

confidence: 99%

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Rauf,

Heryanto,

Tahir

et al. 2024

Phys. Scr.

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To identify solutions for utilizing industrial wastes (slag, sludge, fly ash, and bottom ash) in the development of pro-environmental systems, this paper reviews existing literature and explores material characterization methods. A review analysis was conducted to uncover their potential, and it was found that many utilizations can be made to recycle them into sustainable materials. Structure characterization, optical-dielectric function, and morphology analysis were analyzed to confirm the recent review. Structural properties are represented by crystallite size and crystallinity, where nickel slag shows the smallest distribution (55±10) nm with the highest crystallinity (25.42%), indicating its association with uniformity of response to external disturbances and micro-structural stability. From the analysis of optical and dielectric functions via Kramers Kronig relation, the widening of ∆(LO-TO) was shown by fly ash and slag indicating stable bonding suitable as x-ray shielding and sensor, while high electron loss functions were shown by sludge and bottom ash indicating high potential electronic transition performance. Based on their chemical and physical properties, these industrial wastes are not limited as construction materials and can even be upgraded to more advanced development materials.

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Section: Fly Ashmentioning

confidence: 99%

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Rauf,

Heryanto,

Tahir

et al. 2024

Phys. Scr.

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“…Fly ash that has been disposed of in a safe manner and further processed can be utilized as a resource under certain conditions. The prevalent approach for utilizing fly ash resources involves using it as a building material, where it can be added directly to cement and concrete to construct road bases, dams, and other infrastructure projects [28][29][30][31]. Additionally, fly ash that has underwent melt vitrification can be utilized for the production of glass and ceramics [32].…”

Section: Compositional Analysis Of Different Ash Fractionsmentioning

confidence: 99%

Resource Disposal and Products of Fly Ash from Domestic Waste Incineration in Zhejiang Province, China: Migration and Change of Hazardous Heavy Metals

Pan,

Li,

Gong

et al. 2023

Sustainability

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At present, domestic waste incineration fly ash is classified as hazardous waste. The technical hurdle of fly ash detoxification and resource usage must be overcome in order to effectively utilize fly ash resources. In this study, we investigate the migration and transformation of heavy metal contaminants in the course of utilizing domestic waste incineration fly ash resources through the technology pathway of low-temperature pyrolysis, cyclic rinsing, and evaporation crystallization. Firstly, a comparative analysis was conducted on the fly ash (FA), pyrolysis ash (PA), and water-washing ash (WA) resulting from domestic waste incineration, revealing 24 types of metals, 3 types of non-metals, and 8 types of oxides. We observed the variations in heavy metal concentrations as well as the acidity and alkalinity in three types of ash resulting from the regenerated salt (RS) and incineration processes. Moreover, we analyzed the changes in heavy metal levels and acidity and alkalinity of treated saline water (TSW) and industrial brine (IB), which originate from the fly ash treatment process. The study’s results have confirmed that the heavy metal content in RS was below the detection limit following resource treatment. In addition, the regenerated salt product is determined to be a CaO-SiO2-Al2O3-Fe2O3 system, which enables the utilization of fly ash as a valuable resource. Notably, there were significant changes observed in heavy metal content in TSW and IB. Continued attention needs to be paid to the potential risk of environmental contamination from heavy metals and dioxins in FA infiltration. This research will prove beneficial in assessing resource utilization potential of products subjected to environmentally sound incineration fly ash treatment.

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“…ermal power is regarded as one of the most significant methods to generate electric energy. However, this process is frequently used to produce a large amount of fly ash in a solid waste, which makes a safe and effective treatment [1][2][3]. Part of the fly ash is utilized as an additive in other production activities to improve the performance of concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Mechanical Properties of Fly Ash Stabilized with Cement

Zhou

Zhang

Zhou

et al. 2020

Advances in Civil Engineering

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Cement-fly ash mixture has been commonly used for the foundation treatment projects in the fly ash stratum, as it is effective in improving foundation bearing capacity and reducing settlement of stratum. In order to figure out the effect of dynamic and static load on the mechanical properties exhibited by the cement-fly ash and the reaction mechanism of cement-fly ash, a combination of the unconfined compressive test, impact test, scanning electron microscopy (SEM), and X-ray diffraction (XRD) method was adopted in this study to investigate the cement-fly ash test samples. As demonstrated by the results, the observed growth rate of 0–60 days (d) is higher than that in the later stages and the typical stress-strain curve can be divided into six sections under the unconfined compressive test. At the gas pressure of 0.2 MPa, the cement-fly ash samples exhibited obvious plastic properties in early curing time (0–60 d), and brittle failure was observed in the final stage (90 d). It is obvious that the value of dynamic compressive strength (DCS) is higher than that of unconfined compressive strength (UCS). The analysis of XRD has revealed that the hydration products are primarily derived from the hydration reaction of cement in the early stage and the pozzolanic reaction in the late stage. The pores of cement-fly ash are found to be filled with the hydration products, despite the presence of a mass of pores in the interior.

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Fly Ash the Status of Resource-Oriented Utilization in Construction Material

Cited by 5 publications

References 0 publications

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Resource Disposal and Products of Fly Ash from Domestic Waste Incineration in Zhejiang Province, China: Migration and Change of Hazardous Heavy Metals

Experimental Study on Mechanical Properties of Fly Ash Stabilized with Cement

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