Moisture Mapping is a vital tool for understanding the moisture content of wood. Moisture content refers to the amount of water present in the wood compared to its oven-dried weight. It is an essential parameter as it affects the wood's physical and mechanical properties.
Moisture Mapping is the process of determining the moisture content of wood using non-destructive methods. This technique involves using specialized sensors to measure the electrical impedance of the wood. The impedance is then converted into moisture content using empirical models.
The general understanding is that wood cannot contain over 100% moisture content. This limit is because, after the wood reaches its fiber saturation point (FSP), which is typically around 30%, the moisture is only present in the cell cavities and not absorbed by the cell walls.
However, under certain conditions, it is possible for wood to contain more than 100% moisture content in its cell cavities. This can occur when the wood is submerged in water or exposed to a very humid environment for an extended period. In such situations, the water can penetrate the cell cavities and fill them completely, resulting in a moisture content that exceeds 100%.
Moisture Mapping can provide valuable insights into the moisture content of wood, helping ensure its stability and prevent damage caused by moisture-related issues. However, it is essential to note that wood cannot contain over 100% moisture content in its cell walls.