Plasticity of Fine Grained Soils
Plasticity is the ability of a soil to undergo unrecoverable deformation at
constant volume without cracking or crumbling. It is due to the presence of clay
minerals or organic material.
Consistency limits (Atterberg limits):
Atterberg, a Swedish scientist developed a method for describing the limit
consistency of fine grained soils on the basis of moisture content. These limits
are liquid limit, plastic limit and shrinkage limit.
Liquid
Liquid limit (L.L): is defined as the moisture content in percent at which the
soil changes from liquid to plastic state.
Plastic Limit (P.L.): The moisture contents in % at which the soil changes from
plastic to semi solid state.
Shrinkage Limit (S.L.): The moisture contents in % at which the soil changes
from semi solid to solid state.
Plasticity Index (P.I.): it is the range in moisture content when the soil exhibited
its plastic behavior.Liquidity Index (L.I. or IL) : a relation between the natural moisture contents
(c?) and (L.L.) and (P.L.) in form:
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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