1. ASTM, 2008. Standard test method for unconfined compressive strength index of chemical- grouted soils. ASTM standard D4219-08. American Society for Testing and Materials, West Conshohocken, PA.
2. ASTM, 2011. Standard test method for direct shear test of soils under consolidated drained conditions. ASTM standard D3080-11. American Society for Testing and Materials, West Conshohocken, PA.
3. ASTM, 2013. Standard test method for pH of soils. ASTM standard D4972. American Society for Testing and Materials, West Conshohocken, PA.
4. Athukorala R. Geotechnical characteristics of an erodible soil stabilised by lignosulfonate-an analytical perspective. Doctoral dissertation, University of Wollongong, Department of Civil, Mining and Environmental Engineering; 2013.
5. Discussion: Shear characteristics of a saturated silt, measured in triaxial compression;Bishop;Geotechnique,1954