Table 2: Categorization based on double hydrometer test results of clay sample stabilized with pozzolan, cement, and pozzolan plus 1.5 percent cement.

AdditiveCuring time
1 day7 days14 days35 days90 days

Pozzolan 2%DispersiveDispersiveDispersiveIntermediateIntermediate
Pozzolan 4%DispersiveDispersiveDispersiveIntermediateIntermediate
Pozzolan 5%DispersiveDispersiveIntermediateIntermediateNondispersive
Pozzolan 6%DispersiveDispersiveDispersiveIntermediateIntermediate
Pozzolan 8%DispersiveDispersiveDispersiveDispersiveIntermediate
Cement 1%NondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Cement 2%NondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Cement 3%NondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Cement 4%NondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Pozzolan 2% + 1.5% cementNondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Pozzolan 5% + 1.5% cementNondispersiveNondispersiveNondispersiveNondispersiveNondispersive
Pozzolan 8% + 1.5% cement
NondispersiveNondispersiveNondispersiveNondispersiveNondispersive