when water freezes in an enclosed space how much pressure
If the water were unconstrained the resuting ice has SG ~ 0.915, so volume change on freezing = 1/0.915 - 1 = 0.092. According to my data, the bulk modulus of water = 2*10 4 bar. Making the assumption that the bulk modulus of ice is about the same, pressure rise =. 0.092*2*10 4 = 1840 bar.