Zinc concentrate and Copper concentrate are typical materials which may liquefy. Carol Lake iron ore concentrate is a comparatively coarse material which is empirically judged as "which may liquefy if shipped above the TML". Sedimentary Galena is a comparatively fine material which is empirically judged as "which is not liable to liquefy". Granulated nickel slag is a granular material which is empirically judged as "which is not liable to liquefy". The sample of Sedimentary Galena was sent by Poland to Japan. The sample of Carol Lake iron ore concentrate was sent by Canada to Japan. After that Japan sent it to Poland. The samples of the other three materials were prepared by Japan and sent to Poland.
7 Following tests were carried out:
・ Measurement of basic properties of the samples;
・ Proctor/Fagerberg test procedure described in D.1.3 of the BC Code;
・ Penetration test procedure described in D.1.2 of the BC Code;
・ Liquefaction Potential Test proposed in DSC 2/12/1 with some modification; and
・ Permeability test.
Test Results - Summary
8 The detailed results of the tests are presented in the annex. The results can be summarized in the following table.
Discussion
9 Considering the results on degree of saturation after drainage in Liquefaction Potential Test, it can be said that materials can clearly be categorized into two groups, i.e., materials which may liquefy and materials which are not liable to liquefy, based on the degree of saturation after drainage in Liquefaction Potential Test (c.f. paragraph 4.3 in the annex). Consequently, the results of the tests indicate that the proposed Liquefaction Potential Test can be utilized to judge the liquefaction potential of solid bulk cargoes. Based on the results, it may be concluded that the criterion for the judgment, i.e., degree of saturation after drainage 70 %, is reasonable.
