Skip to main content
# Table 2 Summary of indices commonly used as indicators of loss of wood substance

Parameter | Definition | Method | Reference |
---|---|---|---|

Maximum water content (MWC) | The amount of water in the totally waterlogged sample as a percentage of the dry mass | Sample is weighed both waterlogged and oven dry | [24, 42] |

Basic density | The ratio between the waterlogged volume and the dry mass | The waterlogged volume is calculated (e.g. by displacement), then sample is weighed dry | [43, 44] |

Residual density | The ratio between the basic density and the average density of non-degraded wood | Basic density divided by the density for non-degraded wood of the same species | [45] |

Shrinkage | The size of the dry sample as a percentage of the size of the waterlogged sample | Sample is measured in three planes before and after drying | [3, 45] |

Porosity | The fraction of the volume of a sample not occupied by the cell wall material | The waterlogged volume is compared to the pore volume (measured using a gas pycnometer) | [42, 46] |