1. ASTM D 4318 (2017) Standard test methods for liquid limit, plastic limit, and plasticity index of soils. Annual Book of ASTM Standards, Vol. 04.08, American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.
2. ASTM D427 (2004) Standard test method for shrinkage factors of soils by the mercury method (withdrawn 2008). American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.
3. ASTM D4943 (2008) Standard test method for shrinkage factors of soils by the wax method (superseded 2017). American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.
4. ASTM D4943 (2018) Standard test method for shrinkage factors of cohesive soils by the water submersion method. Annual Book of ASTM Standards, Vol. 04.08, American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.
5. ASTM E 691 (2020) Standard practice for conducting an interlaboratory study to determine the precision of a test method. Annual Book of ASTM Standards, Vol. 14.05, American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.