One of the Atterberg Limit tests. The water content of an homogenous, fine-grained soil/water mixture where the mixture begins to exhibit plastic behavior upon deformation, as defined by the test method described in ASTM Standard D4318 – 05.
Syn. “lower plastic limit”.
See Mitchell (1993).
See also activity, Atterberg Limits, consistency number, liquid limit, plasticity index, shrinkage limit.