Newark Airport runway base used coal fly ash and remains satisfactory after 20 years
Based on · First reported
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- In the 1970s Newark Liberty International Airport incorporated coal fly ash at 10% to 12% of the pavement mix for runways built for jumbo jets, with a stabilised base 24 to 36 inches deep that included 3% to 4% lime and Portland cement.
- A mix containing 4% lime and Portland cement achieved ultimate strengths of 2,000 to 2,600 pounds per square inch, and the Federal Highway Administration reported that the stabilised pavement sections were still performing satisfactorily after more than 20 years of operation.
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