Manufacturing artificial aggregates from industrial sludge and marine clay with addition of sodium salt
Journal
Water Science and Technology
Journal Volume
47
Journal Issue
1
Pages
173-178
Date Issued
2003
Author(s)
Abstract
The potential of converting industrial sludge and dredged marine clay into building and construction materials as an alternative to disposal was investigated in this study. The industrial sludge was mixed with marine clay at various compositions and was shaped into round pellets to be used as concrete aggregates. The pellets were then dried and transferred into a high temperature kiln where they were heated at 1,135¢XC. The artificial aggregates were more porous then the normal granite aggregate. The occurrence of this condition was suspected to be attributed to two factors, viz. the firing temperature and the amount of sodium in the aggregates. To validate this hypothesis, the aggregates with and without added sodium chloride were fired at temperatures of 1,100 and 1,200¢XC. Results showed a reduction in the densities of the aggregates with the addition of sodium chloride and the increase in firing temperature.
Subjects
Construction aggregates
Disposal
Industrial sludge
Marine clay
Sodium salt
SDGs
Other Subjects
Aggregates; Clay; Construction equipment; Dredging; Granite; Kilns; Ore pellets; Sewage sludge; Sodium; Sodium chloride; Waste disposal; Artificial aggregates; Industrial wastes; sodium; aggregate; clay; manufacturing; sludge; chemical composition; clay; conference paper; density; environmental monitoring; granite; heating; industrial waste; marine environment; particle size; porosity; sludge; temperature; waste disposal
Type
conference paper