title: Manufacturing artificial aggregates from industrial sludge and marine clay with addition of sodium salt.
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 degrees C. 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 degrees C. Results showed a reduction in the densities of the aggregates with the addition of sodium chloride and the increase in firing temperature.
authors.affiliation: School of Civil & Structural Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore. cjhtay@ntu.edu.sg
authors.forename: J H
authors.initials: JH
authors.lastname: Tay
authors.forename: S Y
authors.initials: SY
authors.lastname: Hong
authors.forename: K Y
authors.initials: KY
authors.lastname: Show
authors.forename: C Y
authors.initials: CY
authors.lastname: Chien
authors.forename: D J
authors.initials: DJ
authors.lastname: Lee
mesh_terms: D000538:Aluminum Silicates; D000077215:Clay; D003247:Conservation of Natural Resources; D003252:Construction Materials; D019015:Geologic Sediments; D007220:Industrial Waste; D010316:Particle Size; D016062:Porosity; D012037:Refuse Disposal; D012965:Sodium Chloride / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D007220:Industrial Waste; D012965:Sodium Chloride; D000077215:Clay