Predictive Shear Strength Models for Tropical Lateritic Soils
This research focused on the indirect determination of soil shear strength using basic soil properties for a lateritic soil area. Samples were collected from six different locations in the Federal University of Technology Akure, Ondo State, Nigeria. These lateritic soils fall within the A-2, A-6, an...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/595626 |
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| author | Oluwapelumi O. Ojuri |
| author_facet | Oluwapelumi O. Ojuri |
| author_sort | Oluwapelumi O. Ojuri |
| collection | DOAJ |
| description | This research focused on the indirect determination of soil shear strength using basic soil properties for a lateritic soil area. Samples were collected from six different locations in the Federal University of Technology Akure, Ondo State, Nigeria. These lateritic soils fall within the A-2, A-6, and A-7 groups in the AASHTO classification system. Exploratory analysis of the six independent variables was performed using the statistical analysis of principal components. The stepwise multiple regression was used to establish the best predictive models for the California bearing ratio (CBR) and undrained shear strength (). A remarkable significant model for undrained shear strength [] with ( = 229.476, , Adjusted = 0.989, Std. Error = 7.5638) emerged. This model accounts for 99.4% of variation in the dependent variable. For the included predictor variables beta = 0.722, and beta = −0.417, for MDD and GI, respectively, where other variables are excluded from the model. This makes a quick evaluation of the shear strength of lateritic soils by using their maximum dry density and group index values possible. |
| format | Article |
| id | doaj-art-642f328152e24f77a563495b536bba8c |
| institution | Kabale University |
| issn | 2314-4904 2314-4912 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj-art-642f328152e24f77a563495b536bba8c2025-02-03T01:02:51ZengWileyJournal of Engineering2314-49042314-49122013-01-01201310.1155/2013/595626595626Predictive Shear Strength Models for Tropical Lateritic SoilsOluwapelumi O. Ojuri0Department of Civil Engineering, Federal University of Technology, Akure, P.M.B. 704, Ondo State, Akure, NigeriaThis research focused on the indirect determination of soil shear strength using basic soil properties for a lateritic soil area. Samples were collected from six different locations in the Federal University of Technology Akure, Ondo State, Nigeria. These lateritic soils fall within the A-2, A-6, and A-7 groups in the AASHTO classification system. Exploratory analysis of the six independent variables was performed using the statistical analysis of principal components. The stepwise multiple regression was used to establish the best predictive models for the California bearing ratio (CBR) and undrained shear strength (). A remarkable significant model for undrained shear strength [] with ( = 229.476, , Adjusted = 0.989, Std. Error = 7.5638) emerged. This model accounts for 99.4% of variation in the dependent variable. For the included predictor variables beta = 0.722, and beta = −0.417, for MDD and GI, respectively, where other variables are excluded from the model. This makes a quick evaluation of the shear strength of lateritic soils by using their maximum dry density and group index values possible.http://dx.doi.org/10.1155/2013/595626 |
| spellingShingle | Oluwapelumi O. Ojuri Predictive Shear Strength Models for Tropical Lateritic Soils Journal of Engineering |
| title | Predictive Shear Strength Models for Tropical Lateritic Soils |
| title_full | Predictive Shear Strength Models for Tropical Lateritic Soils |
| title_fullStr | Predictive Shear Strength Models for Tropical Lateritic Soils |
| title_full_unstemmed | Predictive Shear Strength Models for Tropical Lateritic Soils |
| title_short | Predictive Shear Strength Models for Tropical Lateritic Soils |
| title_sort | predictive shear strength models for tropical lateritic soils |
| url | http://dx.doi.org/10.1155/2013/595626 |
| work_keys_str_mv | AT oluwapelumioojuri predictiveshearstrengthmodelsfortropicallateriticsoils |