The slope of the curve in Figure 5 indicates a unit of dimensional change per unit change of moisture, i.e., an index that compares the dimensional stability of wood, namely, the moisture expansion
Sorption of water is known to change material properties by hydro-plasticization  and changes the volume by moisture expansion .
For isotropic materials the mass and volume fractions of water can be related to the volumetric coefficient of moisture expansion [[alpha].sub.H] by:
These other causes include thermal and moisture expansion
, lintel failure, roof spread, cavity wall tie failure and so on.
This moisture expansion is comparable to clay bricks moisture expansion of 280-6000 x [10.sup.-6] [12, 15].
The moisture expansion of the Bitublocks was comparable to clay bricks
Rapid indicative test of the actual irreversible moisture expansion of ceramic material dried up to constant weight is provided by heating in an electric furnace to a value of 650 [degrees]C for a period of 20 minutes.
Under this condition, the irreversible moisture expansion is removed.
The degree of curl in end use can be reduced by minimizing the coefficient of moisture expansion
(CME) in the papermaking furnish.
Micromechanical aspects of stiffness and moisture expansion
in wood fiber-reinforced thermosets, In: Proc.
This provided a good finish but was poor at resisting movement ( even general movement from normal thermal and moisture expansion