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Abstract
The properties of lightweight aggregates (LWAs) manufactured from the fly ashes of municipal solid waste (MSW) fluidized-bed (FB) incinerators and mechanical-bed (MB) incinerators were compared and investigated. The fly ashes from FB and MB incinerators were mixed with the reservoir sediment and sintered at 1000–1200°C to produce LWAs. Experimental results show that each LWA product complied with the TCLP standards. Adding MB fly ash to LWA obtained relatively higher crushing strength than adding FB fly ash. However, the LWAs with FB fly ash were less hazardous, lighter in weight, lower in water absorption, and higher in stability than those with MB fly ash. The reuse of FB fly ash in LWA has great recycling potential from the perspective of environmental sustainability.
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