Geotextiles in Embankment Dams - Association of State Dam Safety ...

Geotextiles in Embankment DamsCohesion (ASTM D 653, 2005): Shear resistance at zero normal stress (anequivalent term in rock mechanics is intrinsic shear strength).Cohesion, c (FL -2 ) (ASTM D 653, 2005): The portion of the shear strength of asoil indicated by the term c, in Coulomb’s equation, s = c + p tan φ.Apparent: Cohesion in granular soils due to capillary forces.Cohesionless Soil (ASTM D 653, 2005): A soil that when confined has little or nostrength when air-dried and that has little or no cohesion when submerged.Cohesive Soil (ASTM D 653, 2005): A soil that, when unconfined has considerablestrength when air-dried and that has significant cohesion when submerged.Colloidal Particles (ASTM D 653, 2005): Particles that are so small that thesurface activity has an appreciable influence on the properties of the aggregate.Compaction (ASTM D 653, 2005): The densification of a soil by means ofmechanical manipulation.Compaction (FEMA, 2004): Mechanical action that increases density by reducingthe voids in a material.Controlled: A compaction process that includes requirements for maximum liftthickness and other criteria to ensure that the compacted soil has the intendedproperties.Method: A compaction process that only specifies the equipment and its operationin compacting the soil.Compatibility (Frobel, 1987): Capability of existing together without adverseeffects. Applied primarily to combinations of waste fluids and geosyntheticmaterials.Consequences (FEMA, 2004): Potential loss of life or property damagedownstream of a dam caused by floodwater released at the embankment dam or bywater released by partial or complete failure of the dam.Contamination: The introduction of undesirable or unsuitable materials.Copolymer (Frobel, 1987): A polymer composed of a combination of more thanone monomer (usually two). Copolymers are the basis of some man-made fibers.(See Polymer.)156