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Non-Destructive Testing for Structural Condition Assessment

Nondestructive Testing for Structural Assessment

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This articles describes how non-destructive testing can help structural engineers in the structural condition assessment of existing buildings, such as parking garages, condominiums, and other constructed facilities.  Share on linkedin Share on facebook Share on twitter Share on telegram Share on whatsapp Share on email Structural Condition Assessment usually refers to the process of collecting observations and data about the existing condition of the structure through systematic and scientific methods.… Read More »Nondestructive Testing for Structural Assessment

the future of bridge inspection

The Future of Bridge Inspection

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The Canadian Highway Bridge Design Code (S6-14, 2014) considers a service life of 75 years for newly constructed bridge. What does this mean in engineering terms? It means that the bridges of the future should have satisfactory performance, both durability and structural, during the proposed life-cycle. This can be quite challenging when we look closely; the environment and environmental loading (i.e. snow, freeze and thaw cycles, corrosion, earthquakes, etc.) can… Read More »The Future of Bridge Inspection

DETERIORATION OF CONCRETE

Deterioration of Concrete Structures

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Deterioration of reinforced concrete structures can happen for a number of reasons. Physical and Chemical processes can impact durability and structural performance of the concrete. Defects in design, materials, workmanship, curing and maintenance can all impact the service life, safety and reliability of an element. In this article, we will review some of the most common types of deterioration mechanisms in concrete. Share on linkedin Share on facebook Share on… Read More »Deterioration of Concrete Structures

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?

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