Blog

NDE of Grouted Post-Tensioned Tendons

Post-tensioned bridge tendons are normally filled by cementitious grouting after tendon stressing. In addition to bonding the strands in place, the grout provides an important role in the structure durability by protecting the post-tensioned tendon from corrosion. Unfortunately, many structures are suffering from grout voids, segregated grout and soft grout with elevated levels of sulfates that can cause corrosion...

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Anchor Bolt & Rod Inspection

Many of the signs and communication towers along our highways have been in service for many years and are of an age where it is important to test their anchor bolts and rods for flaws that could affect the ability of these structures to withstand severe weather conditions...

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Steel I-Beam Inspection

NDT uses ultrasonic measurements to determine the length and thickness of a steel I-beam's web and flanges. These measurements are critical factors for an engineer in determining the structural capacity of a beam in a building or bridge structure...

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