Characterization of conditioned pulverized fuel ash for use as a cement component in concrete

摘要

This paper considers the influence of moisture addition (conditioning) to PFA of up to 40/100 by mass on its physical and chemical properties and performance as a cement component in concrete. The work examined conditioned PFA, covering a range of fineness levels and lime contents, stored for up to 18 months, either in the laboratory or In stockpiles established at four UK power stations. Data for laboratory-conditioned PFA indicated progressive Particle agglomeration (mainly in the finer fractions) with storage period, which was greatest at moisture levels of 10-20/100, and for material with total and free lime contents in excess of 3.0/100, respectively.