Einsatzmöglichkeiten der NMR-MOUSE® in der Bauforschung – aktueller Stand der Arbeiten am ibac / Potential Applications of the NMR MOUSE® in Building Research – Current State of the Art at the Institute of Building Materials Research Aachen

Abstract

The NMR MOUSE®, a device using single-sided nuclear magnetic resonance, allows the non-destructive determination of static and dynamic near-surface (currently up to 25 mm depth) hydrogen-containing phases in objects of any size. The present article briefly describes the measuring principle and then highlights applications of single-sided NMR in building materials research using examples from current and former ibac projects. These are mainly the quantitative, depth-dependent measurement of the water content, monitoring the transport of water, hydrophobing agents, and reactive systems in concrete along with determining the layer thickness and ageing processes in polymer films. In addition, the article describes how the presence of steel reinforcements influences the measured values and presents initial results obtained at a real-life building.