Techniques for Cathodic Protection Testing over Airfield Pavements.
Abstract
This report summarizes the techniques developed for cathodic protection testing over airfield pavements. Test results conclusively proved that the accuracy of all pipe-to-surface potential measurements taken over pavement surfaces are questionable. On concrete pavement it was found that potential readings differed from readings on adjacent soil by more than 100 millivolts. Potential readings over well sealed asphalt surfaces were not possible even when using high input impedance, electronic voltmeters. Potential readings over deteriorated asphalt were possible but the accuracy was poor. Accurate potential measurements over pavement surfaces can be made only if the reference electrode contacts the surface beneath the pavement. This report recommends a procedure for easily penetrating the pavement surface and installing a pavement insert through which a modified reference electrode may be inserted. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1979
- Accession Number
- ADA069045
Entities
People
- Bernard Husock