Author(s): G. W. Timco
Linked Author(s):
Keywords: No Keywords
Abstract: At the recent POAC ‘79 conference, the author presented a progress report on a project initiated at the National Research Council of Canada to look for an alternative dopant to sodium chloride for refrigerated modelling basins. This report included a discussion of the growth mechanism of model ice, a chemical survey to define potential dopants for modelling basins, a description of small-scale tests on several different chemically doped ice sheets, and a description of the physical properties of large ice sheets doped with some of the better candidate dopants (methyl alcohol, sodium acetate, carbamide). At that time, it was reported that there were other candidate dopants that remained to be tested in the large test tank. This testing is now complete. The results indicate that there are several chemicals (including carbamide, lithium chloride, formamide, sodium propionate) which produce ice sheets with a better strain modulus to flexural strength ratio than sodium chloride-doped ice. The advantages, disadvantages and proper range of scaling for each of these chemically doped types of ice are presented.
Year: 1981