In this article, we will review an interesting category of ultrasonic test methods for concrete inspection and testing: Ultrasonic Pulse-Echo (UPE) is widely used for the inspection of concrete elements. The method has proven to be extremely useful in determining the thickness of concrete elements with one side access (i.e. tunnel linings, trunk sewer linings, abutment walls), detect sub-surface defects such as voids, honeycombing, and delamination, and to verify Location… Read More »Ultrasonic Pulse Echo Tomography for Concrete
Share on linkedin Share on facebook Share on twitter Share on telegram Share on whatsapp Share on email Concrete Imaging and Scanning are used to assess the location and extent of sub-surface defects. Different non-destructive test methods have been developed and used over the past few decades. The following article briefly describes some of these methods, and their application in the structure inspection and structural condition assessment. What is Concrete… Read More »NDT Methods for Concrete Imaging and Scanning
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; In many cases, closing the deck to traffic is extremely difficult, if not impossible. Existing (traditional) methods of condition survey for bridge decks… Read More »4 Methods of Condition Survey for Bridge Decks
Share on linkedin Share on facebook Share on twitter Share on telegram Share on whatsapp Share on email Construction and installation of concrete piles and 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 performance of the pile.… Read More »What is Pile Integrity Test ?
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 are interested in the main reasons behind concrete cracks, and determine the extent and severity of existing cracks. Two parameters are often used… Read More »3 Methods for Crack Depth Measurement in Concrete
Corrosion inspection of structural anchor bolts can be quite challenging. The reason is that access to these buried elements is often very difficult. The visible part of the bolt is usually in poor quality, and mechanical tests such as pull-out is not an option. Non-destructive ultrasonic testing of anchor bolts provide a very good method for testing the state of corrosion. Structural Anchors Structural anchors are widely used in variety… Read More »Ultrasonic Testing of Anchor Bolts
NDT methods can be used in routine inspection projects; they can be used to follow up the state of damages in periodical checks. The other advantage of NDT methods is that they can be performed by minimum intervention to the structure. This helps prevent aggravating the problems in already damaged structure. NDT methods can be used to assess the condition of elements that do not have easy access. One example… Read More »5 NDT Methods for Structural Evaluation