Research Article
Experimental Study on Physical-Mechanical Properties of Expansive Soil Improved by Multiple Admixtures
Table 15
Physical and mechanical indexes of improved expansive soil.
| | Test materials | Liquid limit (%) | Plastic limit (%) | Plastic index (%) | Maximum dry density (g·cm−3) | Optimum moisture content (%) | Free expansion rate (%) | Shear strength (kPa) | Unconfined compressive strength (kPa) |
| | Unimproved expansive soil | 51.5 | 23.56 | 27.94 | 1.80 | 19.0 | 53.1 | 115.5 | 733.50 | | Expansive soil improved by lime | 43.41 | 26.74 | 16.67 | 1.66 | 17.84 | 25.7 | 248.4 | 1259.23 | | Expansive soil improved by three mixtures | 38.64 | 28.75 | 9.89 | 1.73 | 16.53 | 17.4 | 279.4 | 1468.72 |
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