Table 2.
Applicability and non-applicability of various chemical stabilisers to different soil types.
| Method | Applicability | Unsuitable Soil type |
|---|---|---|
| MICP | Medium size sandy soil | Soil with a too large or too small pore size |
| Bio-Enzyme | Highly soil specific | |
| Electro-Osmosis | Suitable for fine, Impermeable clays | Soils possessing high carbonate buffer and high cation exchange capacities |
| Cement and Lime | Organic soil with low pH | |
| Gypsiferous/Bassanitic soils | ||
| Fly Ash | Organic soil with low pH | |
| CCR | Clays | |
| Silica Fumes | Expansive soils | |
| Sodium Silicate-based stabilisers | Sulphate containing soils which are otherwise problematic with traditional stabilisers such as lime, cement, and fly ash | |
| NaOH + CaCl2 | Useful for in situ improvement | |
| PU | Repairing highway pavement | Care must be taken when using in wet soil |
| medium size sand | Clayey soil | |
| Sealing cracks or for ground improvement where strata bear a large amount of water | ||
| When high brittleness may be dangerous | ||
| LS | Minimise disturbance to ecology | |
| Dispersive clay | ||
| Epoxy resin | Dispersive clay | |
| Reduction in permeability may be harmful | ||
| PAM | Highway slopes | |
| Erodible soil | ||
| Reduction in permeability may be harmful |