Browsing by Author "Rokbi, Mansour"

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    Effect of fibers orientation on the fracture of polymer concrete based on quartz, polyester and jute fabrics
    (Trans Tech Publications, 2021) Houria Benkharbeche, Houria; Rokbi, Mansour; Rahmouni, Zine El Abidine; Ghebouli, Moustapha; Grine, Madani; Baali, Brahim
    The main objective of this work is to highlight the influence of jute woven layer orientation on fracture parameters (energy release rate and stress intensity factor) of a polymer concrete laminate. The use of plant fibers, jute in this study, as reinforcements outside the polymer concrete, acquires mechanical properties, traction, and flexion, more than appreciable, however, other characteristics must be studied to ensure better integration on the market. The addition of plant fibers with different orientations is not without consequences on the mechanical behavior, in this case, on the resistance to cracking and its propagation. Fibered concretes have a very different behavior compared to non-fiber concretes, especially after the first cracking, where the fibers make their contribution by trying to stop the evolution and the propagation of micro-cracks within the matrix by making the concrete more ductile
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    Mechanical properties of polymer concrete made with jute fabric and waste marble powder at various woven orientations
    (Springer, 2019) Rokbi, Mansour; Baali, Brahim; Rahmouni, Zine El Abidine; H., H.
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    Performance of polymer concrete incorporating waste marble and alfa fibers
    (2017) Rokbi, Mansour; Rahmouni, Z El Abidine; Baali, Brahim
    Polymer Concrete (PC), as the name suggests, is a composite material consisting essentially of a mixture of carefully graded aggregates and fine fillers bound together by means of an organic resin system. In the ordinary cement concrete, the gravel is the aggregate, sand is the filler and Portland Cement is used as the binder (Pratap 2002). Polymer concrete was first developed in the 1950s and then became widely known in the 1970s. Today, the PC is used very efficiently in precast components for buildings, bridge panels, hazardous waste containers, machine bases, industrial flooring, retouching of damaged concrete structures, underground pipes and in various utility and transportation components (Abdel-Fattah and El-Hawary 1999, Reis and Ferreira 2004). The use of polymer resins instead of Portland cement in the concrete mix improves the mechanical behavior in general and produces desirable properties for durability such as high abrasion resistance and impermeability to water and salts (Fontana and Bartholomew 1980).In