Characterization of the Omni-Processor Sewage Sludge Ash for Reuse as Construction Material - Archive ouverte HAL Access content directly
Journal Articles Fluid Dynamic and Material Process Year : 2022

Characterization of the Omni-Processor Sewage Sludge Ash for Reuse as Construction Material

(1, 2) , (1) , (2) , (1) , (2)
1
2

Abstract

Omni Processors (OP) are machines which use sludge as a fuel to generate electricity and clean water, but create ash at the same time. In the present study, fly ash and bottom ash are investigated as materials for potential reuse in the construction field. First, the granular size, density and Blaine finesse are determined. Then, the chemical composition and microstructure are obtained by means of X-ray fluorescence and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), respectively. Finally, ashes reactivity is determined by two chemical methods (modified Chapelle test, bound water content R3) and a mechanical method (pozzolanic activity index). The characterization results indicate two material types: fly ash similar to cement and bottom ash similar to fine sand. That's why the mortars mechanical strength with fly ash 0%-30% is better than that with bottom ash at the same rate. Fly ash slightly decreases the mechanical strength of mortars while bottom ash induces a much more significant decrease.
Fichier principal
Vignette du fichier
TSP_FDMP_22165.pdf (2.78 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03773649 , version 1 (09-09-2022)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

Prince Momar Gueye, Siham Kamali-Bernard, Dame Keinde, Fabrice Bernard, Vincent Sambou. Characterization of the Omni-Processor Sewage Sludge Ash for Reuse as Construction Material. Fluid Dynamic and Material Process, 2022, 18 (6), pp.1580-1593. ⟨10.32604/fdmp.2022.022165⟩. ⟨hal-03773649⟩
35 View
4 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More