How Do We Derive Angle Of Friction of ECA For Geotechnical Work?
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How do we derive the angle of friction of Expanded Clay Aggregate for Geotechnical Application design work ?

How do we derive the angle of friction of Expanded Clay Aggregate for Geotechnical Application design work ?

The angle of friction of limitless expanded clay aggregate (ECA ®) is obtained from triaxial tests by varying the lateral confining pressure of the aggregate and its degree of compaction.
For design purposes, with a confining pressure of 200 kPa (which is typical of the most important geotechnical applications), a value of approximately 40° can be assumed.