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塑性指数 (そせいしすう, soseishisuu) Japanese meaning | Kotomora
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The plasticity index of this clay is 20.
Soils with a high plasticity index expand and shrink significantly with changes in moisture content.
Kanji 指 finger, point to, indicate Related words 液えき 性せい 限げん 界かい Liquid limit: the water content at which soil changes from plastic to liquid state. Plasticity index is the difference between liquid limit and plastic limit.
塑そ 性せい 限げん 界かい Plastic limit: the water content at which soil begins to crumble when rolled into a thread. Plasticity index = liquid limit - plastic limit.
Etymology Compound of 塑性 (plasticity) + 指数 (index). 塑性 is a modern technical term derived from 塑 (model, mold) and 性 (property), while 指数 is a standard suffix for numerical indices.
