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Evaluation of the Effect of Lime Content on the California Bearing Ratio of Silty Soils: Case of Fombap District

Open Journal of Geology 2020年第11期10卷 1059-1071页

作者： Willy Chance Guimezap kenou François Ngapgue Jules Hermann Keyangue Tchouata Vladimir Willianov Keubou Tatapzia walter jovic kenou jogo Research Unit of Mechanics and Physical Systems Modeling (UR2MPS) Faculty of Sciences University of Dschang Dschang Cameroon Laboratory of Engineering Industrial Systems and Environment (LISIE) FOTSO Victor University Institute of Technology University of Dschang Dschang Cameroon Research Center for Innovation and Entrepreneurship (PRIE) Institut Universitaire de la Cote Douala Cameroon Laboratory of Environmental Geology Faculty of Sciences University of Dschang Dschang Cameroon School of Geology and Mining Engineering (SGME) University of Ngaoundéré Ngaoundéré Cameroon Faculty of Arts Humanities and Social Sciences (FALSH) University of Yaoundé 1 Yaoundé Cameroon

The present study is inscribed within the framework of the amelioration of the soils of the Santchou plain for employment as pavement subgrade. The bearing capacity proposed by these soils at their respective optimum dry densities is relatively small, although most of these experimental California Bearing Ratio (CBR) values of the studied soils are more important than the ones prescribed by the American Association of State Highway and Transportation Officials Classification system (AASHTO) for A5, A6, and A7 types. The stabilization of this soils with lime has been chosen to improve the bearing capacity and by association, their resilient modulus. The results of this study show that the increase of lime content is not proportional with the increase of the expected mechanical performances. In fact, the literature explains that when the lime content arrives at an optimum, the mechanical parameters no longer increase, but decrease significantly. After this optimum, the soil stabilization no longer shows advantages in the increase of geo-mechanical properties of soils.

关键词： Soil Classification Lime Content California Bearing Ratio Soil Stabilization Subgrade

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