1. ASTM D2435 (2011) Standard test methods for one-dimensional consolidation properties of soils using incremental loading.
2. ASTM D2487–11 (2011) Standard practice for classification of soils for engineering purpose (unified soil classification system).
3. ASTM D4318 (2017) standard test methods for liquid limit, plastic limit, and plasticity index of soils.
4. ASTM D698–12 (2012) Test methods for moisture-density relations of soils and soilaggregate mixtures.
5. ASTM D854–10 (2010) standard methods for specific gravity of soils by water pycnometer.