ABSTRACT: When the wet granular materials lose their shear strength they flow like fluids. This phenomenon is called liquefaction. The liquefaction can be prevented by means of limiting the moisture content of cargo by introducing the safety margin. Cargoes, which may liquefy shall only be accepted for loading when the actual moisture content of the cargo is less than its Transportable Moisture Limit (TML). It has been recognized that in some cargoes, moisture can gravity drain towards the bottom of the hold. The resulting much wetter bottom layer may therefore be prone to liquefaction and provoke instability of the entire cargo. To prevent sliding and shifting of ore concentrates in storage a biodegradable materials are added to the ore. The polymer materials absorb water from the ore particle?s pores and the moisture content goes down. In con-sequence polymer materials may prevent drainage of the water from the ore particle?s pore.

KEYWORDS: IMO Requirements, Marine Transportation, Organic Polymer, Liquefaction, Mineral Concentrates, Transportable Moisture Limit (TML), Polymer Materials

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