Long, bumpy ride to smoother roads nears end for Ottawa's 'Professor of Pavement'

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By Stu Mills, CBC News Ottawa, March 7, 2018

One day in 1982, when Abd El Halim was still a graduate student at the University of Waterloo, he stopped to watch a paving crew at work near his house.

Fascinated, El Halim studied the steel cylinder of the asphalt roller as it met the hot, black road surface, leaving a network of fine fissures in its wake.