1. AS 1289.5.5.1, 1998. Methods of testing soils for engineering purposes, in: Method 5.5.1: Soil compaction and density tests-Determination of the minimum and maximum dry density of a cohesionless material-Standard Method, Standards Australia.
2. Standard test methods for particle-size analysis of soils;ASTM D422–63,,2007
3. Standard test method for specific gravity of soil solids by gas pycnometer;ASTM D5550–06,,2006
4. Test methods for determination of the soil water characteristic curve for desorption using a hanging column, pressure extractor, chilled mirror hygrometer, and/or centrifuge;ASTM D6836–02,2003
5. Standard test methods for measurement of hydraulic conductivity of unsaturated soils;ASTM D7664–10,2010