TITLE:
Prediction of Swelling Kinetics of Expansive Soils of Rufisque (Senegal, West Africa)
AUTHORS:
Papa Sanou Faye, Issa Ndoye, Mapathé Ndiaye, Abib Tall, Ibrahima Khalil Cissé, Jean Pierre Magnan
KEYWORDS:
Marls, Marls Clays, Clays, Kinetic, Swelling, Expansive Soils, Hyperbolic Rule, Rufisque
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.7 No.2,
June
21,
2017
ABSTRACT: The disorders caused by the swelling of the soil on the structures have been observed for several years in the city of Rufisque. This article presents the results of the study of swelling kinetics of expansive soils in Rufisque and their prediction based on the hyperbolic rule. The odometer is used as an instrument for measuring swelling and the tests are carried out on some intact samples at their sampling water content. The present study shows that in Rufisque the most swelling layer is marl. The results show two phases of development. The first phase is very fast and represents 77% of the final deformation and the second one is slower. The prediction of the issue by the hyperbolic rule shows that it underestimates the first phase but gives a good prediction of the second phase of the swelling rate. There is a good correlation between the final swelling rates. However, the model gives a bad approximation of the half-swelling time.