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 adminJune 23, 2023 In this article, we will review how non-destructive testing and evaluation methods can help structural engineers and construction managers with identifying the location and extent of anomalies in post-tensioning ducts. We will review how a multi-technology approach using Ground Penetrating Radar (GPR) , Ultrasonic Pulse Echo
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
Written by adminJuly 7, 2023 Parking garages require routine inspection and maintenance to ensure they remain safe and operational. Whether it is public parking in extremely busy downtown area or a private condominium structure, proper maintenance is needed to keep them safe. The importance of parking garages is often ignored, simply because
Written by adminFebruary 22, 2024 The Crosshole Sonic Logging (CSL) or Ultrasonic Crosshole Test is a widely used non-destructive test for assessing Pile Integrity and quality control of drilled shafts (piles). CSL test is a variation of Ultrasonic Pulse Velocity. In theory, the pulse velocity in concrete is a function of the modulus of elasticity,
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 adminJanuary 6, 2017 Protecting concrete in cold weather is a continuous challenge for concrete contractors and site supervisors. Placing concrete in the cold weather condition requires special preparation and protection. All necessary precautions should be taken in order to to alleviate the negative impacts of cold weather. Special curing and
Written by adminJanuary 12, 2017 This articles reviews some of the most accepted and widely used nondestructive tests of thickness measurement for concrete elements. Thickness measurement can be of interest for engineers and technicians involved in the assessment of existing concrete elements, such as slabs, foundations, or pavements, or as a means
Written by adminJanuary 20, 2017 The use of electrical resistivity method for quality control and evaluation of concrete durability is becoming very popular among scholars and engineers. The measurement of electrical resistivity of concrete provides useful information about the microstructure of concrete material. The test procedure has since been standardized by AASHTO TP 95. This
Written by adminFebruary 7, 2017 Taking core samples from concrete structures is required for comprehensive assessment of durability and structural performance of the structure. The compression test on core samples is known as the most reliable method for assessing the compressive strength and a means of quality control. The procedure for taking
