Research Article
Amelioration Effect of Fly Ash and Powdered Ground Steel Slag for Improving Expansive Subgrade Soil
Table 2
Characteristics of materials.
| | S/N | Property | Standard | Soil | Fly ash | PGSS |
| | 1 | Color | — | Black | Grey | Whitish | | 2 | Specific gravity | AASHTO T 100 | 2.64 | 2.15 | 2.84 | | 3 | Moisture content (%) | ASTM D-2216-90 | 38.07 | 32.00 | 40.00 | | 4 | Liquid limit (%) | ISO 17892-12 | 107.14 | — | — | | 5 | Free swell | ASTM D4546-21 | 118.00 | — | — | | 6 | CBR (%) | ASTM D1883 | 0.80 | — | — | | 7 | Plastic limit (%) | ISO 17892-12 | 59.83 | Non-plastic | Non-plastic | | 8 | Plasticity index (%) | AASHTO T90 | 47.31 | Non-plastic | Non-plastic | | 9 | OMC (%) | IS-2720 | 18.96 | 25.00 | 20.00 | | 10 | MDD (g/cc) | IS: 2720 | 1.46 | 1.40 | 2.56 | | 11 | UCS (kg/cc) | ASTM D-2166 | 0.34 | — | — |
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