SALIH Mekideche

BENMESSAHEL Mahfoud , MESSAGUEM Fathi, KHAMEL Fateh

Effet des déchets minéraux sur le comportement des bétons polymères

Djerad Mawloud , Fetiti Ravene Badis

Elaboration et caractérisation d'un nouveau matériau à base des déchets de cartons et du polystyrène

Plastic is considered one of the most widely used materials in the world, but it causes a major environmental problem due to its inherent difficulty in decomposing and disintegrating, in addition to its high rates of consumption and production. Due to continued use, plastic may lose some of its properties and thus become less usable for its intended purpose. In this case, it is considered waste and is usually disposed of as waste or burned. The possibility of using plastic waste can be a suitable environmental solution. One such way is to recycle this waste into other products with limited properties. In this work, the characteristics of waste polypropylene (PP Waste) and virgin polypropylene (PP Virgin) were studied and compared. Through the results obtained, we have concluded that polypropylene loses some of its ductility properties, and it also gains some hardness after use.

Citation

Salih MEKIDECHE , abdraouf KHALDOUNE , MANSOUR Rokbi , ,(2024-05-15), Study and analyze the properties of recycled plastic waste and compare it with virgin plastic,THE 2nd INTERNATIONAL CONGRESS ON ENERGY AND INDUSTRIAL PROCESSES ENGINEERING, ICEIPE’24,USTHB, Algiers, Algeria.

The main objective of this work is to provide a better understanding of the effect of the degree (duration) of retting of Stipa Tenacissima stems to control the quality of the lignocellulosic fibers obtained. Once harvested and cleaned of impurities, the stems are immersed in a water bath to trigger their degradation for various periods (14,26,30,45,60 and 90 days). After each targeted period, the stems are brushed manually using a metal brush, washed with distilled water, and steamed at 70°C for 6 hours. A series of analyses is carried out on each series of fibers obtained. Firstly, the densities, crystallinity indices, and chemical characterization of the fibers at each degree of retting are determined and analyzed.

Citation

Salih MEKIDECHE , abdraouf KHALDOUNE , MANSOUR Rokbi , ,(2024-02-14), Study The Characteristic Of The Effect Of Immersion Duration On Lignocellulosic Fibers Stipa Tenacissima,2 ND NATIONAL CONFERENCE ON MATERIALS, ENERGY & ENVIRONMENT,UNIVERSITY MOHAMED KHIDER BISKRA FACULTY OF SCIENCES AND TECHNOLOGIES DEPARTMENT OF INDUSTRIAL CHEMISTRY

Abstract – Jute fabrics are widely used around the world to make storage bags for various types of goods. Due to constant use, the jute bag loses its strength and thus reduces its ability to store products, in which case it is considered waste and is usually disposed of as waste or incinerated. The possibility of using jute fabric even in the event of waste can be a suitable environmental solution. One of these methods is to use this jute fabric in a limited proportion, as reinforcement in a suitable polymer matrix which can be strong and rigid enough to compete with products made of wood and other materials. In this work, Jute fabrics are used as fibrous reinforcement for the manufacture of composite materials (PP/Jute). To determine the best rate of fibers to use for optimal performance, bio-composites with different mass fractions are detailed (30%, 40%, 45%, 50%, 60% and 70%). According to ASTM D638-03, the static test results show that the material Bio-Com 40% performed well compared to the others ones. The maximum stress value of Bio-Com 40% was σ= 39.07 MPa with a Young's modulus of E = 4.60 ± 0.16 GPa.

Citation

Salih MEKIDECHE , ,(2022-11-13), Valorization of waste of jute fabric and polypropylene as constituents of bio-composites,4th International Conference on Applied Engineering and Natural Sciences,Konya, Turkey

This research designed to contribute to reduce the environmental impacts through the preparation of composites with recyclable materials to be used in different applications. To this end, composites have been developed based on jute recovered from packaging bags and polypropylene (PP) reclaimed from scraps obtained from the manufacture of PP yarns. The developed composites were then characterized. First of all, the optimum mass fraction was determined in order to achieve good mechanical performance. Several mass fractions (30%, 40%, 45%, 50%, 60%, and 70%) were experimented to find that the best characteristics were those of the biocomposite with 40% reinforcement (σ = 39.07 MPa, E = 4.60 GPa). With this ratio, jute–PP biocomposites were further developed with different jute architectures (Satin, Serge 2 × 2, Taffeta). A structural study of the different jute fabric wastes was carried out to confirm whether they are suitable for use with a thermoplastic matrix (i.e., at a processing temperature of ≥200°C). Tensile and bending tests were carried out on these composites to find out the effect of the weave structure of the reinforcement.

Citation

Salih MEKIDECHE , , (2021), Characterization of physical and mechanical properties of recycled jute fabric reinforced polypropylene composites, POLYMER COMPOSITES, Vol:42, Issue:10, pages:10, Wiley online library

L'objectif de ce travail est de fait l’extraction des fibres suivant des périodes distincts (14, 26, 30, 60, 90 jours). Les résultats de tests de traction sur fibre montrent une met distinguions enter les proprets mécaniques de chaque fibre (selon le type d’extraction).

Citation

Salih MEKIDECHE , ,(2017), Effet de degré de rouissage des tiges Stipa Tenacissima sur les perfarmances mécaniques des fibres extraits,Modelling-Simulation-Optimization of Alternative and Sustainable Systems,MAGHREB PIPE INDUSTRIES MSILA