ASTM D 4318 - 10 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

American Society for Testing and Materials (ASTM). Current edition approved Jan. 15, 2010. Published March 2010. 16 p. These test methods cover the determination of the liquid limit, plastic limit, and the plasticity index of soils as defined in Section 3 on Terminology.
Two methods for preparing test specimens are provided as follows: Wet preparation method, as described in
10.1. Dry preparation method, as described in
10.2. The method to be used shall be specified by the requesting authority. If no method is specified, use the wet preparation method.