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
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 adminMay 31, 2017 Cracking is a common observation in concrete structures. Cracks can be a result of plastic shrinkage, or constructional movements. Moreover, cracks can happen as a result of overloading concrete elements, or creep. Chemical reactions such as alkali-aggregate reactions and corrosion can induce cracking. Material and Structural engineers
Written by adminNovember 7, 2017 Non-destrcutive Testing- NDT Methods for Evaluation of Parking Garages can help improve the quality of routine inspection and maintenance. Parking garages require routine inspection and maintenance to ensure they remain safe and operational. Weather it is a public parking in extremely busy downtown areas, or a private
Written by adminJune 28, 2017 Appropriate operation and maintenance of concrete dam structures are essential to ensure the safety of the structure, and reducing risk. Concrete surfaces should be examined in a regular basis to identify spalling and deterioration due to weathering, or extreme stresses, or other physical, or chemical damage mechanism. Nondestructive Evaluation
Written by adminJuly 27, 2017 Exposed Concrete Decks suffer from various deterioration mechanisms; i.e. freezing and thawing, corrosion. The most significant consequence is the delamination of concrete, which could eventually trigger other damage mechanism, such as corrosion. The maintenance of deck slabs is quite challenging mainly because it normally involves large areas;
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 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
