1. ASTM. 2007. Standard test method for particle-size analysis of soils. ASTM standard D422-63. (Withdrawn 2016). ASTM International, West Conshohocken, Pa.
2. ASTM. 2010a. Standard test methods for laboratory determination of water (moisture) content of soil and rock by mass. ASTM standard D2216-10. ASTM International, West Conshohocken, Pa.
3. ASTM. 2010b. Standard test methods for liquid limit, plastic limit, and plasticity index of soils. ASTM standard D4318-10. ASTM International, West Conshohocken, Pa.
4. ASTM. 2014. Standard test methods for specific gravity of soil solids by water pycnometer. ASTM standard D854-14. ASTM International, West Conshohocken, Pa.
5. ASTM. 2016. Standard test methods for determination of the soil water characteristic curve for desorption using hanging column, pressure extractor, chilled mirror hygrometer, or centrifuge. ASTM standard D6836. ASTM International, West Conshohocken, Pa.