1. ASTM (2008a) D698 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft 3 (600 kN-m/m 3 ))
2. ~ ASTM International West Conshohocken PA
3. ASTM (2008b) D1883 Standard Test Method for CBR (California Bearing Ratio) of Laboratory-Compacted Soils ASTM International West Conshohocken PA
4. ASTM (2008c) D5084 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter ASTM International West Conshohocken PA
5. ASTM (2008d) D4546 One Dimensional Swell or Settlement Potential of Cohesive Soils ASTM International West Conshohocken PA