Written by adminJune 19, 2017 Construction and installation of concrete pilesand deep foundations is a challenging task. Problems may occur during the process, which in turn results in defects or anomalies such as: pile formation problems, concrete faults, and reinforcement installation issues. The resulting defects can negatively impact the durability and mechanical
Written by adminSeptember 11, 2017 A corroded structure (whether it is a bridge, or a jetty, or a simple ramp) could be scary for many people. Imagine yourself driving along the Gardner Express (Downtown Toronto), or the highway 40 (Montreal), and all of a sudden, a piece of concrete falls onto your
Written by adminApril 25, 2017 Half Cell corrosion mapping is an effective method for assessing the severity of corrosion activity in concrete structures. It is the most well-known procedure to identify the likelihood of active corrosion; however, the test does not provide any information about the kinetics of corrosion activity. The easy and
Written by adminApril 13, 2017 Ultrasonic Pulse Velocity (UPV) is an effective non-destructive testing (NDT) method for quality control of concrete materials, and detecting damages in structural components. The UPV methods have traditionally been used for the quality control of materials, mostly homogeneous materials such as metals and welded connections. With the
Written by adminFebruary 22, 2024 The Crosshole Sonic Logging (CSL) or Ultrasonic Crosshole Test is a widely used non-destructive test for assessing quality control of concrete piles (deep foundations). CSL test can be considered a offspring of Ultrasonic Pulse Velocity. In theory, the pulse velocity in concrete is a function of the
Written by adminJune 23, 2023 Detecting Corrosion in Post-Tensioned Structures: Non-Destructive Evaluation Methods In this article, we will explore how non-destructive testing (NDT) and evaluation methods help structural engineers and construction managers in detecting corrosion in post-tensioned structures. By using a multi-technology approach that includes Ground Penetrating Radar (GPR), Ultrasonic Pulse Echo
Written by adminMay 24, 2018 In this article, we will briefly review how to Estimate Strength of Concrete Using NDT Methods. Compressive strength of concrete is by far the most important property of concrete. It represents the mechanical properties of concrete; for example, the 28 days compressive strength of concrete cylinders is
Written by adminJuly 9, 2019 Rebound Hammer test provides a practical and cost-effective solution for estimating in-place concrete strength. Recent developments in rebound hammers, and improved guidelines for estimating concrete strength can help structural engineers and condition assessment professionals in accurately classify concrete strength, and make data-informed decisions on the location of
Written by adminSeptember 4, 2019 Introduction Bridges are among the most important infrastructure facilities. So far, the inspection and testing of bridge structures have largely been limited to visual inspection, chain dragging, extracting cores, and in some cases, half-cell corrosion potential mapping. Lots of interesting research have been done by researchers around
Written by adminAugust 5, 2020 Introduction to Impact-Echo In this article, we will briefly review how to test concrete using impact-echo method. Impact Echo is an advanced non-destructive testing (NDT) method for evaluation of thin concrete and masonry members. Impact-Echo method works based on the use of stress waves. The test method
