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What is the value of non destructive techniques?

On-site assessment of concrete properties


The condition assessment of concrete is a key point for structural reassessment, since material ageing can result in some performance loss and lower the safety level. Progressive decay of performances also induces important maintenance costs, so as to prevent future deterioration and ultimate failure. Non-destructive techniques (NDT) have been used for many years to assess the condition of existing reinforced concrete structures, but they suffer several drawbacks, including the lack of standards and the fact that practitioners commonly do not have enough expertise. However, the most important drawback is that NDT does not enable a direct assessment of the parameters that are sought. The abilities of various techniques with respect to given problems have been summarized in several state-of-the-art books [1 - 3].

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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