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Concrete Imaging and Scanning Feature Photo

NDT Methods for Concrete Imaging and Scanning

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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

NDT Methods for Evaluation of Parking Garages

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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 condominium structure, proper maintenance is needed to keep them safe. The importance of parking garages is often ignored, simply because nobody lives in… Read More »NDT Methods for Evaluation of Parking Garages

Corrosion Monitoring of Reinforced Concrete Structures

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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 car, breaking the windshield. Feels scary? Indeed! A corroded structure makes you feel so unsafe, even if it is in stable condition. This… Read More »Corrosion Monitoring of Reinforced Concrete Structures

Half Cell Corrosion Potential Mapping

Half Cell Corrosion Mapping for Concrete

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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 cost-effective procedure of the test makes it popular among engineers and structure inspectors. The method has been used for bridge deck inspection, parking… Read More »Half Cell Corrosion Mapping for Concrete

Ultrasonic Testing of Anchor Bolts

Ultrasonic Testing of Anchor Bolts

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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

Damaged Bridges

How to Test Damaged Bridges?

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Damaged Bridges are a major concern in the maintenance and operation of transportation infrastructure. Bridge structures in North America were mainly developed in the 1960’s and 1970’s and are rapidly approaching the end of their initial service life. Major mega cities in North America spend millions of dollars each year to keep these structures safe and functional. According to the ASCE 2013 report card, “one in nine of the US bridges are… Read More »How to Test Damaged Bridges?

Structural Effects of Corrosion

Structural Effects of Corrosion

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Share on linkedin Share on facebook Share on twitter Share on telegram Share on whatsapp Share on email Corrosion of steel reinforcement is often investigated in the context of the durability performance of the structure; however, corrosion can equally impact the structural performance. Steel corrosion may result in reduced flexural capacity (loss of rebar cross section), reduced bond, and limited ductility. In this article, we will review some of the… Read More »Structural Effects of Corrosion

Patch Repair

Patch Repair: Dos and Don’ts

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What happens when the patch repair is only done in damaged area?  When a corrosion sign and rust stain appear on the concrete surface, it is the time to do something in order to stop corrosion propagation. Depending on corrosion type and propagation, the required intervention and precautionary measure are adopted. The remedial action may include patch repair, cathodic protection, ion extraction, sacrificial anode, etc. Regardless of what method is… Read More »Patch Repair: Dos and Don’ts

ASR-Corrosion

Corrosion in Concrete

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It is common to see map crack networks over the concrete elements of aged infrastructure along with leaching signs. It might be interesting to know that no structural collapse has been reported so far because of the ASR cracking in North America. However, the question arises as to whether it is required to manage ASR cracking within concrete structures. In this article, we will study the combined effect of corrosion… Read More »Corrosion in Concrete