Browsing by Author "Zine El Abidine Rahmouni"

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    The effect of chemical treatment on the mechanical and thermal 3 properties of composite materials based on clay reinforced with 4 sawdust
    (Université de M'sila, 2022) Fadhila Mouissa; Azzedine Benyahia; Mokhtar Djehiche; Kamel Belmokre; Nadir Deghfel; Ali Redjem; Zine El Abidine Rahmouni
    This study investigates the effect of the chemical treatment of sawdust on the mechanical and 16 thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 17 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% 18 NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali- 19 treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 20 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity 21 of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 22 0.37 (W.m 1.K 1) compared to the one reinforced with treated sawdust
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    ItemOpen Access
    Effect of Curing Temperature in the Alkali-Activated Brick Waste and Glass Powder mortar and Their Influence of Mechanical resistances
    (2020) Imen Yamina Omri; Nadia Tebbal; Zine El Abidine Rahmouni
    In this study, compressive strength values were measured at different curing times (7, 14 and 28 days).The alkali-activation of the brick and glass powder body with potassium water glass having the silicate modulus of 3. Compressive strengths, flexural strength and specific fracture energy of the specimens stored at 40° C and 60° C are evaluated at 28-days. The study demonstrates that the storage temperature of specimens and the content of the alkaline solution have a significant influence on all mechanical properties of the studied materials.