Stephen Gordon, a Ph.D. student at Louisiana Tech University in Ruston, Louisiana, designed the poster on the right depicting vitrified fly ash pipe as an alternative to vitrified clay pipe. Gordon is also is a member of the university NASTT student chapter.
According to the Federal Highway Association, “Fly ash is the finely divided residue that results from the combustion of pulverized coal and is transported from the combustion chamber by exhaust gasses.” Fortunately, fly ash can be collected from these exhaust gasses and used...
