Disjoining Pressure of Water Films in Frozen Materials
نویسنده
چکیده
Abstract Using dilatometry method the thickness of nonfreezing film formed on inner molecularly smooth surface of a thin (micrometer size) quartz capillary was first measured in dependence on temperature and external pressure on ice in the temperature range from 1°C to -0.14°C and pressures up to 8 MPa. The data obtained were used for calculation of disjoining pressure isotherms of nonfreezing films. It was shown that the main contribution to the films stability gives structural forces, caused by structural changes of nonfreezing water. The structural changes are also responsible for the effect of nonfreezing. The arising disjoining pressure may cause defects and even frost heaving in natural mineral bodies, like soils and grounds.
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