Papers by Samia Boussetta
Geo-China 2016, 2016
This paper aims to assess the numerical predictions of settlement reduction of compressible soil ... more This paper aims to assess the numerical predictions of settlement reduction of compressible soil reinforced by rigid inclusion with experimental results obtained from experiments conducted in calibration chamber. Loading tests carried out in calibration chamber are simulated in axisymmetric condition. Numerical computation focused on settlement variation both for the unreinforced soil and reinforced soil. It was found the main component of settlement of reinforced soil is quickly stabilized after loading compared to the settlement of unreinforced soil. Further, the role of efficiency has been highlighted in showing the benefit of rigid inclusion technique.
The numerical behavior of rafted foundation resting on soil reinforced by rigid inclusions is und... more The numerical behavior of rafted foundation resting on soil reinforced by rigid inclusions is undertaken. Axisym-metric modeling of scaled test model investigated primarily in the framework of ASIRI research project is investigated by the FE code Plaxis V9.2D. The predictions of settlement and efficiency of the reinforced soil are compared to measurements obtained from tests carried out in the calibration chamber. A parametric study was conducted and allowed to observe the effect of the thickness and the constitutive material of mattress layer, the cover rate and type of compressible soil on the efficiency of the reinforcement by rigid inclusion. Main findings were: the best efficiency is obtained for minimum thickness of mattress layer. The increase in cover rate leads to an increased maximum efficiency and settlement reduction.
Tunis soft clay belongs to the category of problematic soils because of its weak strength charact... more Tunis soft clay belongs to the category of problematic soils because of its weak strength characteristics , high compressibility and high content of organic matter (22%). Deep mixing column (DM) presents a well-developed technique to improve the properties of Tunis soft soils by increasing its bearing capacity and reducing settlements. This paper describes a laboratory experimental program performed to assess the effectiveness in improving the shear strength of Tunis soft clay. The two mains objectives of this research are to evaluate the effect of reinforcement by DM on the behaviour of the Tunis soft clay and to investigate parameters of influence on its strength characteristics. Five parameters are studied from the performed tests: (1) curing time: CT = 7, 14, 21 and 28 days; (2) injection pressure: IP = 50, 100 and 150 kPa; (3) water–cement ratio w/C = 0.7, 1 and 1.2; (4) rotation rate V = 15, 30 and 40 rpm and (5) consolidation pressure: , 3 = 100, 150 and 200 kPa.
The numerical behavior of rafted foundation resting on soil reinforced by rigid inclusions is und... more The numerical behavior of rafted foundation resting on soil reinforced by rigid inclusions is undertaken. Axisym-metric modeling of scaled test model investigated primarily in the framework of ASIRI research project is investigated by the FE code Plaxis V9.2D. The predictions of settlement and efficiency of the reinforced soil are compared to measurements obtained from tests carried out in the calibration chamber. A parametric study was conducted and allowed to observe the effect of the thickness and the constitutive material of mattress layer, the cover rate and type of compressible soil on the efficiency of the reinforcement by rigid inclusion. Main findings were: the best efficiency is obtained for minimum thickness of mattress layer. The increase in cover rate leads to an increased maximum efficiency and settlement reduction.
Innovative Infrastructure Solutions, 2016
![Research paper thumbnail of [Idiopathic steroid-resistant nephrotic syndrome in child : study of 20 cases]](https://a.academia-assets.com/images/blank-paper.jpg)
La Tunisie médicale, 2011
Idiopathic steroid-resistant nephrotic syndrome (ISRNS) is rare and represents a significant ther... more Idiopathic steroid-resistant nephrotic syndrome (ISRNS) is rare and represents a significant therapeutic dilemma for paediatricians and paediatric nephrologists. To analyze characteristics of the ISRNS in the child. Retrospective study of 20 cases of ISRNS enrolled in paediatric department of nephrology in Sahloul hospital (Tunisia) between June 1993 and December 2007 (14 years period). There were eight girls and 12 boys (mean age: 5.8± 3.7 years) originating from the center or the south of Tunisia. Eight of them had a minimal-change disease (MCD), 11 a focal and segmental glomerulosclerosis (FSGS) and one a mesangioproliferative glomerulonephritis (MePGN). In this group, no family form could be identified. All patients were treated by cyclosporine associated with low dose of steroid. We noted a complete remission (CR) in nine cases, partial remission (PR) in three cases and no response to cyclosporine in eight cases. Among patients with CR, six presented MCD and three a FSGS. In th...
La Tunisie médicale, 2007
Renal involvement is one of the most severe and frequent manifestations of the systemic lupus ery... more Renal involvement is one of the most severe and frequent manifestations of the systemic lupus erythematosus (SLE). Aim : In this study, we analyzed clinical and evolutive particularities of 14 paediatric cases of lupus nephritis (LN). It's a retrospective study in 14 children with lupus nephritis followed-up in the paediatrics department of Sousse and Mahdia between 1983 and 2004. There were 12 girls and two boys (sex-ratio = 0.16) aged four to 14 years (mean age =10 years). At the first presentation, we noted proteinuria in all patients with nephrotic syndrome in six cases, hypertension with variable severity in five cases, hematuria in six cases and a variable severity of renal insufficiency in six cases. Histological examination of kidney performed in 10 patients with severe nephropathy, revealed class IV glomerulonephritis in four cases, class V in two cases and class III in four cases. Thirteen patients were treated by corticosteroids associated with immunosuppressive agent...
International Journal of Geotechnical Engineering, 2012
This paper aims to assess the numerical predictions of settlement reduction of compressible soil ... more This paper aims to assess the numerical predictions of settlement reduction of compressible soil reinforced by rigid inclusion with experimental results obtained from experiments conducted in calibration chamber. Loading tests carried out in calibration chamber are simulated in axisymmetric condition. Numerical computation focused on settlement variation both for the unreinforced soil and reinforced soil. It was found the main component of settlement of reinforced soil is quickly stabilized after loading compared to the settlement of unreinforced soil. Further, the role of efficiency has been highlighted in showing the benefit of rigid inclusion technique.
Books by Samia Boussetta
This book details the principle, the procedure and the execution of all laboratory soil mechanics... more This book details the principle, the procedure and the execution of all laboratory soil mechanics tests. Presentation and interpretation of test results are illustrated.
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Papers by Samia Boussetta
Books by Samia Boussetta