Potential Use of Sewage Sludge Ash in Lime-Based Materials

Sall, Mamoudou; Traoré, Alassane; Wade, Abdou Ciss; Gueye, Prince Momar; Diouf, S.; Dieye, Gora; Diop, Djibril

doi:10.11648/j.am.20211002.11

Cited by 5 publications

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“…Then the thermal conductivity and effusivity of samples were determined simultaneously using a transient method [25] [27].…”

Section: Methodsmentioning

confidence: 99%

Comparative Characteristics of Hydrated Lime with Fine Sewage Sludge Ash (FSSA) and Coal Fly Ash (CFA)

Sall¹,

Wade²,

Dieye³

et al. 2022

JMMCE

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The disposal of waste has become an environmental issue due to the limited available landfilling space. This paper aims to compare the characteristics of hydrated lime with fine sewage sludge ash (FSSA) and coal fly ash (CFA). Multiple techniques, X-ray fluorescence (XRF), X-ray diffraction (XRD), the Fourier transform infrared (FTIR), compressive strengths, thermophysical properties, and setting time were used to assess the physicochemical characteristics of the lime-based materials. X-ray fluorescence and X-ray diffraction were used to determine the chemical composition and phases of ashes, lime and binders. The results showed that the chemical composition of ashes is similar to that of cement. Besides glass, the main minerals identified in CFA and FSSA are quartz (SiO 2 ) and anhydrite (CaSO 4 ). Moreover, calcium aluminium oxide (Ca 3 Al 2 O 6 ) was detected for CFA and phosphorus calcium silicate (Ca 2 SiO 4 -Ca 3 (PO 4 ) 2 ) for FSSA and minor phases were detected for both. FTIR measurements were carried out to characterize the inorganics components of different samples. Compressive strengths of mortars with different formulations have shown that both have a long-term positive effect which might be related to a pozzolanic activity. For the CFA the L 3 binder consisting of 60% of coal fly ash and 40% lime has a higher compressive strength than the others while for the FSSA the L 4 binder consisting of 80% fine ash and 20% lime has a higher compressive strength than the others. Both binders setting start times are greater than that of cement but shorter than that of lime. The study of the thermophysical properties of binders shows that they have a higher thermal resistance than cement mortar. Moreover, binders heat up less quickly because of their low effusivity compared to cement. Lime-based ma-

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“…Then the thermal conductivity and effusivity of samples were determined simultaneously using a transient method [25] [27].…”

Section: Methodsmentioning

confidence: 99%

Comparative Characteristics of Hydrated Lime with Fine Sewage Sludge Ash (FSSA) and Coal Fly Ash (CFA)

Sall¹,

Wade²,

Dieye³

et al. 2022

JMMCE

Self Cite

View full text Add to dashboard Cite

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Greener cementitious composites incorporating sewage sludge ash as cement replacement: A review of progress, potentials, and future prospects

Danish

Ozbakkaloglu

2022

Journal of Cleaner Production

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Durability and microstructure study on concrete made with sewage sludge ash: A review (Part Ⅱ)

Ahmad¹,

Alqurashi

Alanazi

et al. 2023

Science and Engineering of Composite Materials

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The quantity of carbon dioxide gas released during the manufacturing and acquisition of raw ingredients determines the sustainability of concrete. Industrial garbage dumping is a critical difficulty that humanity is experiencing because of globalization and the increasing population. Through the efficient use of industrial by products, efforts are being undertaken to lower carbon discharges in the concreting process. It has been recommended by sustainable development goals and standards to use byproducts that have lower embodied energy and carbon emissions. Ash from sewage sludge demonstrates its suitability for use in concrete. However, a compressive assessment is needed to determine the past, present, and future research aspects of using sewage sludge ash (SSA) as a construction material. Therefore, this research is carried out on using SSA as a construction material. All the essential properties such as the physical and chemical properties of SSA, its effect on durability properties, and morphology structure study are the main aspect of this review (Part II). The analysis also highlights the research gap for upcoming exploration which further improved its performance.

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Potential Use of Sewage Sludge Ash in Lime-Based Materials

Cited by 5 publications

References 0 publications

Comparative Characteristics of Hydrated Lime with Fine Sewage Sludge Ash (FSSA) and Coal Fly Ash (CFA)

Comparative Characteristics of Hydrated Lime with Fine Sewage Sludge Ash (FSSA) and Coal Fly Ash (CFA)

Greener cementitious composites incorporating sewage sludge ash as cement replacement: A review of progress, potentials, and future prospects

Durability and microstructure study on concrete made with sewage sludge ash: A review (Part Ⅱ)

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