HIGH-STRENGTH PORTLAND CEMENT CONCRETE CONTAINING MUNICIPAL SOLID WASTE INCINERATOR ASH

municipal solid waste, incinerator ash, Portland cement concrete A variety o f methods are being examined by numerous organizations to render hazardous solid residues non-hazardous and to create beneficial uses for ash from municipal solid waste incinerators. One method for both purposes is the replacement of a portion of the fine aggregate in Portland cement concrete. The strength of the concrete drops significantly as the portion replaced increases, even with normal additives. This paper presents the greatly improved strengths obtained with ash, which has been exposed to a new additive. These results show that up to 35% of the concrete can be made up of ash, while still obtaining compressive strengths of over 5000 psi (34.5 MPa). Micrographs of the original ash, ash and additive, concrete with ash but without additive, and concrete with ash and additive indicate the role of the additive. TCLP extractions of this novel new concrete have yet to be conducted. The economics, commercialization and extension of the development to other situations are discussed.