1. ASTM D854: Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer (2014)
2. ASTM D422-63: Standard Test Method for Particle-Size Analysis of Soils (2007)
3. ASTM D4318: Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils (2010)
4. ASTM D2487: Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System) (2011)
5. ASTM D1635/D1635M: Flexural Strength of Soil-Cement Using Simple Beam with Third-Point Loading (2012)