1. Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass;ASTM D2216,2019
2. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification system);ASTM D2487-11,2010
3. Standard Test Methods for Determining the Water (Moisture) Content, Ash Content, and Organic Material of Peat and Other Organic Soils;ASTM D2974-20,2020
4. Standard test method for particle-size analysis of soils;ASTM D422-63,2007
5. Standard Test Method for Liquid Limit, Plastic Limit and Plasity Index of Soils;ASTM D4318-10,2010