Swelling Rock - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 190

(8.7)

in which

is the water volume absorbed by the block B at time t, V WB,max is the required volume
of water for complete swelling and V B is the volume of block B. The degree of swelling
of corrensite and transformation of anhydrite into gypsum ω (t) of the REV then cor-

responds to ω averaged over all blocks that are contained in the REV (Fig. 8.8, lower).

Figure 8.8 Homogeneous model of water uptake (Wittke 2003)