1. ASTM (2016) Standard test methods for measurement of hydraulic conductivity of saturated porous materials using a flexible wall permeameter. ASTM D5084. ASTM, West Conshohocken, PA
2. ASTM (2017a) Standard practice for classification of soils for engineering purposes (unified soil classification system). ASTM D2487. ASTM, West Conshohocken, PA
3. ASTM (2017b) Standard test methods for liquid limit, plastic limit, and plasticity index of soils. ASTM D4318. ASTM, West Conshohocken, PA
4. ASTM (2017c) Standard test methods for particle-size distribution (gradation) of soils using sieve analysis. ASTM D6913. ASTM, West Conshohocken, PA
5. ASTM (2017d) Test method for particle-size distribution (gradation) of fine-grained soils using the sedimentation (hydrometer) analysis. ASTM D7928. ASTM, West Conshohocken, PA