Accepted Papers to Appear in Future Issues

Étude de préfaisabilité du Turbinage des eaux de la Station de Traitement de Koudiet Acerdoune/Algérie
A. IGUERCHA, S. ZOUAOUI, K. MOHAMMEDI, M. BOUAZIZ, D.E. KARI
Abstract
L'eau qui parvient à nos robinets suit un chemin représenté par les conduites de canalisation. On doit lui fournir de l'énergie pour qu'elle puisse circuler le long des réseaux d’eau et qui réalise donc un lien entre l'énergie et l'eau. Les stations de traitement d'eau en Algérie consomment de l'énergie électrique pour ses systèmes de pompage et d'éclairage. Cette étude vise à récupérer l'énergie résiduelle de l’eau à son arrivée dans la station de traitement d'eau par turbinage, au lieu de continuer à la dissiper comme on le fait actuellement au moyen de robinets brises-charge. Une analyse de la faisabilité technique du projet et une évaluation du potentiel hydroélectrique disponible ont été accomplies, avant de proposer différentes options pour l’installation des équipements de turbinage. En utilisant cette méthode, le maximum de quantité d'énergie qui peut être récupérée a été estimée à 7,44 GWh, celui de la quantité de carbone économisée a été estimé à 446,210 tonnes CO2. Nous concluons notre projet par une évaluation de la rentabilité des aménagements hydroélectriques. Ceci donne une opportunité d'innover dans le secteur hydraulique, en rapprochant l'eau et l'énergie sans émission de CO2 et avec une énergie inépuisable et économique capable de fournir une énergie hydroélectrique presque en continu.
Accepted : 2022-04-13

Improving properties of modified clay with cement containing random chicken feather fibers
Abdelkader Zerrouk, Abdelkader Kadri, Abdelkader Bougara
Abstract
Over the past decades, the poultry meat processing industry’s growth has generated a huge amount of feather “waste”. This waste has given rise to a number of environmental concerns and had a low value-being when used in many industrial applications. Promoting the use of sustainable materials is now a pole of interest in engineering construction. Aiming to recover this waste in enhancing the properties of problematic soils, an experimental study is conducted using these materials. An earth material named Zebabdja clay is treated by the cement to improve its properties. The inclusion of waste byproducts such as chicken feather fibers would improve the characteristics of the soil with low load bearing capacity. The present work attempts to valorize this kind of natural fiber in the field of building and solve an environmental problem using local materials. The control parameters evaluated herein include cement content (6%, 8%, 10% et 12%) and chicken feather fibers contents (1%, 2% et 3%). The unconfined compressive and direct shear tests were measured at different curing times. The results found show that 10% is the needed amount of cement to be used in order to stabilize the clayey soil treated. An increase in chicken feather fibers up to 2% indicates an improvement of the mechanical performances of the clayey soil, which may constitute a very interesting engineering solution for the weak soil.
Accepted : 2022-05-30

An Appraisal on the Parameters Influencing Lime Stabilization of Soils
Jijo James, Vidhya Lakshmi Sivakumar
Abstract
Soil stabilization is a common engineering technique used to improve the physical properties of weak soil in order to achieve the desired engineering requirements. Among the various chemical stabilization techniques adopted for expansive soils, lime stabilization is the most widely adopted for controlling the swell-shrink properties of expansive soils. This study reviews the major research works carried out in the application of lime stabilization and attempts to understand various parameters that influence the effectiveness of lime stabilization. The different parameters that have been discussed include Soil Type and Mineralogy, Type, Quantity and Quality of Lime, Curing Period, Type of Curing, Curing Temperature, Moulding / Placement Water Content, Pulverization Quality, Strain Rate, pH, Organic Content, Sulphates and Extreme Conditions.
Accepted : 2022-06-04

Experimental sensitivity analysis of sensor placement based on virtual springs and damage quantification in CFRP composite
Mohand Slimani, Tawfiq Khatir, Djilali Boutchicha, Brahim Benaissa, Samir Tiachacht
Abstract
In this paper, we proposed an efficient approach based on the sensitivity analysis of optimal sensor placement in Carbon Fibre Reinforced Polymer (CFRP) composite structures. The Finite Element Analysis (FEM) of a two-dimensional structure beam is used as a numerical model to control the modal analysis based on inverse Problems (using optimization Techniques. Teaching-Learning-Based Optimization Algorithm (TLBO) Coupled with FEA is used to identify the best location of sensor Placement based on virtual spring and loss of rigidity to study the effect of the mass sensor on the beam based on experimental and numerical modal analysis. The sensor's position is presented by additional mass. The objective function based on the frequencies measured by the experimental and calculated (FEM) through TLBO. Eight positions were introduced in this paper to improve the proposed approach. Results illustrated that this method is an effective tool to study the best location of the sensor and model updating together. After the best position, we created a crack in the beam to calculate the loss of rigidity based on the inverse problem. The results show that the proposed approach is more accurate to quantify the crack depth.
Accepted : 2022-06-12

Etude de la pouzzolanicité de deux argiles de Kindia (Guinée) en vue de leur utilisation dans la formulation de liant hydraulique
Mamadou Yaya BALDE, Chantale NJIOMOU DJANGANG, Ousmane Tougué BALDE, Philippe BLANCHART, Daniel NJOPWOUO
Abstract
This work presents, firstly, the results of pozzolanicity tests on two varieties of clay, codified respectively ABD and ARD, taken at Débélé. In a second step, the physical properties of the mortars obtained from these two varieties by substitution of cement at a rate of 20% are presented and discussed. The mass of portlandite (CH) fixed by the powders calcined at 600°C is 1107.43mg and 796.15mg respectively for ABDc and ARDc. The mechanical activity index, at 28 days of curing is 93.54% (ABDc) and 88.13% (ARDc) with values increasing with the age of the specimens. The mechanical behaviour of the mortars shows acceptable variations with apparent densities between 1.800 and 2.090 g/cm3. The mechanical resistance is lower than that of the control mortar for hybrids based on raw clays, but those of hybrids based on calcined clays are higher than that of the control mortar beyond the 28th. These results attest to the pozzolanic character of the Débélé clays and constitute a contribution to their valorisation in the formulation of hydraulic binders.
Accepted : 2022-06-12