Method and device for determining the swelling and / or shrinking behavior of solids

The invention relates to a device and a method for determining the swelling and / or shrinkage behavior of solids. The device and the method serve to determine the swelling and / or shrinkage behavior of at least one solid as a function of at least one physical and / or chemical parameter of the solid， in particular as a function of the change of at least one physical and / or chemical parameter of the solid， the parameter being the moisture and / or the content of a gas or gas mixture， in particular air， nitrogen， helium， carbon dioxide， and / or alkanes， in particular methane， and / or alcohols， in particular methanol and / or ethanol， and / or the temperature in or on the solid. The device has at least one scale (3) which is set up to determine the mass of the solid as a function of the at least one parameter; a camera system (9) which is set up to record a geometric change in the solid as a result of the shrinkage and / or swelling as a function of the at least one parameter; and at least one lighting device (20)， the lighting device (20) and the camera system (9) being designed and set up such that only light emitted by the lighting device and reflected in the beam path can be received by the camera system (9).