Non‐destructive monitoring of the leaching of concrete surfaces by single sided 1H nuclear magnetic resonance
Under regular conditions, concrete is durable when immersed in drinking water. Pure water on the other hand can severely leach and damage concrete surfaces. Consequently, the concrete surface becomes soft and the rebar‐protecting passivity can be lost. In a past study presented in Bautechnik, the leaching resistance of concrete surfaces in drinking water reservoirs was reported. Based on this, we present results from the non‐destructive measurement of the time‐ and depth‐depending changes in material porosity by single‐sided 1H nuclear magnetic resonance due to leaching. The results allow the quantitative deduction of damage depths as well as insights into the underlying deterioration processes.