Publications Scientifiques
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Item Static and cyclic behavior of concrete reinforced with materials composite(Université M'Hamed Bougara Boumerdes, 2013) Irekti, Amar; Hami, B.; Aribi, C.; Abadlia, Mohamed TaharThis work includes the test results of static and cyclic compression specimens of plain concrete and reinforced by several folds of woven fiberglass. The static compression tests were performed at a constant speed with gradual increase of the load. The results are expressed by curves representing the change of stress as a function of the strain to failure. The results give us three phases of behavior: a phase behavior similar to that of a homogeneous and elastic material resulting in an almost linear relationship between stress and strain. The second phase of development of shattered concrete that leads to progressive curvature of the curve until the maximum stress (σmax) for a certain amount of strain (ε), and third in imposing increases distortion, we can get a decreasing curve corresponding to the accentuation of the rupture, that is to say in the development of fracture surfaces and cracking more or less widespread. The cyclic compression tests were conducted under load imposed on a percentage of the maximum load in static fracture, with a change in the number of cycles for each set of specimens. The results of cyclic compression tests show that the loss of stiffness to failure of the specimen is divided into three phases: in the first phase shows a gradual reduction of stiffness in the early rounds in the second phase decreased rigidity becomes slow, and finally in the third phase, the loss of stiffness abruptly accelerates to failure of the specimenItem Géopolymérisation d’aluminosilicates. Influence des rapports Silice/Alumine(University M'Hamed Bougara Boumerdes, 2013) Zibouche, Fatima; Boudissa, N.; Irekti, A.; Abadlia, Mohamed TaharLa géopolymérisation étudiée repose sur la polycondensation de précurseurs solides silicoalumineux, (métakaolin) dans un environnement fortement alcalin. Des échantillons géopolymères Na-poly-sialate avec des rapports molaires différents de Si/Al, Na2O/Al2O3, H2O/Na2O sont préparés, pour suivre leur influence sur la polymérisation et la microstructure. Lors de la géopolymérisation, les solutions alcalines induisent une quantité d'atomes de Si et d'Al de l'aluminosilicate, forment des « geomonomers » dans les solutions pour former des réseaux rigides. Les résultats dans gamme des rapports étudiée donnent des résultats proches de ceux attendus. Ils indiquent une degré élevé de géopolymérisation. L’augmentation Si/Al, montre un recouvrement par un réseau continu de plus en plus dense, ce qui est confirmé par la résistance à la compression. Les résultats sont corrélés en privilégiant une approche multi-échelle du comportement du matériau par différentes techniques complémentaires (DRX, FTIR, MEB), caractérisant la microstructureItem Hybrid Cements From Metakaolin, Slag And Clinker Mixtures. Influence Of Activators(Université M'hamed Bougara de Boumerdès, 2013) Zibouche, Fatima; Ferna´ndez- Jime´nez, A.; Boudissa, N.; Palomo, A.; Abadlia, Mohamed TaharHybrid cements containing a mixture of aluminates gels-substituted CSH (CASH) and NASH phases and other phases are investigated. The mechanical strength and structures of hybrid cement with geopolymeric matrix of aluminosilicates and clinker are examined. These geopolymeric matrixes are based on polycondensation of the powder precursors by alkaline activation. The activators can be solids (alkalis of sulfates and carbonates,) or liquid (alkaline solutions of silicates). The type of alkaline cation (Na, K) influences the activation. The phase’s transformations are characterised by the following parameters: the effect of cures (2, 7, 28 days) and their impact on the hardening, the texture and the mechanical strength. These properties are correlated by complementary techniques of DRX, FTIR, SEM / EDX. Alkaline potassium K more than the sodium Na allows the obtaining of products of denser reactions what increases the strength of cohesion of the matrix and show higher mechanical resistances.Item Pérennisation des ouvrages en génie civil : diagnostic et inspection des bétons d’égouts(2012) Oualit, Mehena; Abadlia, Mohamed Tahar; Jauberthie, RaoulItem Effet du chlorure de sodium sur la durabilité des BHP(2012) Chaid, Rabah; Jauberthie, Raoul; Abadlia, Mohamed TaharItem Valorization of fibrous waste for the wastewater discoloration(2013) Ouslimani, Nassira; Zrari, F.; Abadlia, Mohamed Tahar; Benabed, H.Item Étude de la récupération du collapse par microdensitométrie avec du bois d'eucalyptus camaldulensis dehn provenant de beghla en Algérie = Microdensitometric study of recovery from collapse in eucalyptus camaldulensis dehn wood from beghla in Algeria(2012) Tazrout, M.; Abadlia, Mohamed Tahar; Mothe, F.Item Rheology of mortar and concrete containing mineral admixtures = Reologia zapraw i betonów z dodatkami mineralnymi(Foundation Cement, Lime, Concrete, 2013) Mansour, M.S.; Abadlia, Mohamed Tahar; Afalfiz, A.; Ladaoui, W.Item Metakaolin-slag-clinker blends.the role of Na+ or K+ as alkaline activators of theses ternary blends(Wiley Periodicals, 2013) Fernández-Jiménez, Ana; Zibouche, Fatima; Boudissa, Nassima; García-Lodeiro, Ines; Abadlia, Mohamed Tahar; Palomo, AngelItem Compressive behaviour of concrete elements confined with GFRP-prefabricated bonded shells(Taylor and Francis, 2015) Beddiar, A.; Zitoune, R.; Collombet, F.; Grunevald, Y.H.; Abadlia, Mohamed Tahar; Bourahla, N.
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