Title:
Strength of Concrete Containing Municipal Solid Waste Fly Ash (SP-105)
Author(s):
Jubal D. Hamernik and Gregory C. Frantz
Publication:
Materials Journal
Volume:
88
Issue:
5
Appears on pages(s):
508-517
Keywords:
compressive strength; concretes; fly ash; physical properties; pozzolans; setting (hardening); wastes; Materials Research
DOI:
10.14359/2171
Date:
9/1/1991
Abstract:
The properties of concrete containing fly ashes obtained from municipal solid waste (MSW) burning were determined. Variables included the type of fly ash {from a mass-burn plant or from a refuse-derived-fuel (RDF) plant}, two different burning conditions of the RDF fly ash, the amount of fly ash in the concrete with cement replacement amounts up to 60 percent, and the addition of a set-accelerating admixture. The test results include properties of the fresh concrete, cylinder compressive strengths at ages from 3 to 90 days, and time of set. Test results indicate: 1) the RDF fly ash produced concrete with strengths comparable to the control concrete at replacement levels up to 45 percent; 2) the difference in burning conditions of the RDF fly ash had no significant effect on the concrete strength; 3) the mass-burn fly ash produced significantly lower concrete strengths; 4) the MSW fly ashes significantly increased the concrete setting time; and 5) high dosages of a set-accelerating admixture reduced the setting time of MSW fly ash concrete.