Dealing with Uncertainties When Using Non Destructive Techniques for Assessing Construction Material Properties: Identification of Major Sources and Their Consequences

The paper analyses the main reasons why NDT assessment of concrete properties is a complex problem. Based of real data and synthetic simulations, it shows how material variability, measurement uncertainties, variation of uncontrolled influencing factors and model uncertainties can be tackled. It points at the issue of model error resulting from the measurement and calibration process and draws some conclusions in order to improve the efficiency of on site NDT assessment.