Soil suction is a measure of the free energy of the pore-water in a soil.Soil suction in practical terms is a measure of the affinity of soil to retain waterand can provide information on soil parameters that are influenced by the soilwater; for example, volume change, deformation, and strength characteristics of thesoil.
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<element name="SuctionTest" type="diggs:SuctionTestType" abstract="false" substitutionGroup="diggs:AbstractLaboratoryTestProcedure"><annotation><documentation>Soil suction is a measure of the free energy of the pore-water in a soil. Soil suction in practical terms is a measure of the affinity of soil to retain water and can provide information on soil parameters that are influenced by the soil water; for example, volume change, deformation, and strength characteristics of the soil.</documentation></annotation></element>