Table 1: Properties of clay from Azerbaijan which has been altered to become fully dispersive.

StandardValue

Geotechnical properties
 Sand (%)ASTM D 422-63 [24]2
 Silt fraction (%)ASTM D 422-63 [24]36
 Clay fraction (%)ASTM D 422-63 [24]62
 Liquid limit (%)ASTM D 4318-98 [25]34
 Plastic limit (%)ASTM D 4318-98 [25]17
 Plasticity index (%)ASTM D 4318-98 [25]17
 Soil classificationASTM D 2487-98 [26]CL
 Specific gravity (Gs)ASTM D 854-98 [27]2.79
 Optimum moisture content (%)ASTM D 698-91 [28]16.5
 Maximum dry density (g/cm3)ASTM D 698-91 [28]1.82
 Unconfined compressive strength (kPa)ASTM D 2166-98a [29]320
Chemical properties
 PHASTM D 2967-71 [30]8.5
 Na+, (meq/lit)ASTM D 4542-95 [15]179.16
 K+, (meq/lit)ASTM D 4542-95 [15]16.89
 Ca2+, (meq/lit)ASTM D 4542-95 [15]21.25
 Mg2+, (meq/lit)ASTM D 4542-95 [15]13.15
 EC (Electrical conductivity), (ms/cm) 20.9
 TDS (Total dissolved salts: Na+ + Ca2+ + Mg2+ + K+), (meq/lit)230.45
 SAR (Sodium absorption ratio), (meq/lit)43.2
 PS (Percent sodium over total dissolved salts)78
Dispersivity properties
 Percent dispersion by double hydrometer testASTM D 4221-99 [13]100
 Call nameFully dispersive clay
 Classification by double hydrometer test ASTM D 4221-99 [13]Dispersive
 Classification by pinhole test ASTM D 4647-93 [14]Dispersive (D1)
 Classification by chemical test Sherard et al., 1976 [16]Dispersive