Dear Mahdi

you can have a look the following sits:

https://store.standards.org.au/reader/as-1289-3-6-3-2020?preview=1

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiQm4Ts763-AhVFiP0HHeEHBD0QFnoECBoQAQ&url=https%3A%2F%2Fwww.epa.gov%2Fsites%2Fdefault%2Ffiles%2F2020-01%2Fdocuments%2Fsedc_2004-2005_append.pdf&usg=AOvVaw3FxDu73j7PLAMun1jpnRFz

To compare Australian Standards (AS) and American Society for Testing and Materials (ASTM) Standards for soil classification, you can start by looking at the scope and purpose of each standard. Both AS and ASTM provide guidelines for soil classification, but they may have different approaches or focus on different aspects of soil properties.

Next, you can compare the terminology and classification systems used in each standard. For example, AS uses a system based on particle size distribution and plasticity index, while ASTM uses a system based on grain size, Atterberg limits, and soil behavior.

You can also compare the testing methods and procedures recommended in each standard. For example, AS may recommend different methods for measuring soil properties such as moisture content, density, and shear strength than ASTM.

Finally, you can consider any regional or local factors that may influence the applicability of each standard. For example, AS may be more relevant for soils in Australia due to differences in climate, geology, or land use compared to ASTM.

Overall, it is important to carefully review and understand the requirements and limitations of each standard before selecting or applying them to soil classification.