Research Article
Use of Coal Bottom Ash as Mechanical Stabiliser in Subgrade Soil
Table 1
Laboratory tests carried out and standards used.
| Test and standard | Samples on which tests were carried out | Subgrade soil | Coal bottom ash | Mixture of subgrade soil and bottom ash |
| Particle size distribution BS 1377-2:1990 | √ | √ | √ (only for mixture containing 30% by weight of CBA) |
| Particle density BS 1377-2:1990 | √ | √ | |
| Atterberg limits BS 1377-2:1990 | √ | | √ (only for mixture containing 30% by weight of CBA) |
| Heavy proctor test BS 1377:4:1990 | √ | | √ (for all mixtures) |
| California bearing ratio BS 1377:4:1990 | √ | | √ (for all mixtures) |
| Loss on ignition BS 1377-3:1990 | | √ | |
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