Thermochemical Concrete Pavement Scaling Mechanism: Navy F/A-18 Jet Aircraft Parking Apron Problem
Final rept. FY94-FY98,
NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
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Experiments were conducted to determine the mechanism of concrete scaling or deterioration on airfield parking aprons used by FA-18 Navy jets. Some of the scaling was caused by heat from the auxiliary power unit APU and some was caused by phosphoric acid attack on the heated concrete. The phosphoric acid originated from hydrolysis of organic phosphates in used engine oil. The mechanism was confirmed by demonstrating that the concrete scale debris was high in phosphate content.
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