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Learning to Love NDT

by Bernard H. Hertlein, Sr. Consultant; STS Consultants, Asheville, NC,


Serial Information: Civil Engineering—ASCE, 1992, Vol. 62, Issue 1, Pg. 48-50


Document Type: Feature article

Abstract:

Sometimes overblown claims and the practical limitations of early nondestructive tests for concrete have left many civil engineers leery of NDT methods. While some are aware that NDT has a wide variety of useful and important functions in quality control and evaluating damage or deterioration, many more either don't know what current technology can do, or are reluctant to adopt new techniques. Reliable nondestructive methods now exist to measure the depth and integrity of deep foundations, locate delamination in concrete bridge decks, find voids beneath concrete slabs, locate and measure reinforcing steel, assess corrosion damage and evaluate concrete quality or deterioration in situ. Specialists can draw on a wealth of documented evidence showing the abilities and limitations of these methods in order to select the best method for the site conditions involved and type of information required.

Subject Headings: Concrete bridges | Reinforced concrete | Nondestructive tests | Concrete slabs | Steel bridges | Quality control | Deterioration

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