Publications Internationales

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13

Browse

Has files: YesSubject: search.filters.subject.Durability

Search Results

Now showing 1 - 8 of 8
  • Thumbnail Image
    Item
    Durability Indices of a Sealing Mortar Incorporating Blast Furnace Slag
    (2025) Ikhaddalene, Soumia; Irekti, Amar; Oualit, Mehena
    Ground granulated blast furnace slag generated from steel manufacturing presents environmental challenges, but it can be valuable when utilized as a supplementary material in concrete, contributing to the development of sustainable materials. In this research, a new sealing mortar was prepared by substituting 10% of the cement with slag (M10). This material can provide performance comparable to M234, a M0 sealer used for sealing and wedging supports and machine bases. The mechanical properties and durability indices of both M10 and M234 were compared to the reference mortar MISO, which is a laboratory-made mortar free of slag. XRD analysis was conducted to determine the crystallinity of the starting cement, and granulometry revealed a median size distribution of 23 μm for the slag after grinding. Capillary absorption and water-accessible porosity were tested for all samples.
  • No Thumbnail Available
    Item
    Impact of the nature of fibers on the physicomechanical behavior and durability of cement matrices
    (Springer, 2021) Aboutair, Wafaa; Chaid, Rabah; Perrot, Arnaud
    In this paper, the strength of concrete prismatic and cylinders concrete and reinforced with steel and polypropylene fibers are presented. Also, hybrid fibers with crimped steel and polypropylene were used in concrete matrix to study its improvements in strength and durability properties. The steel, polypropylene, and hybrid consisting of polypropylene and steel (crimped) fibers of various proportions by volume of cement were used in concrete mixes. Besides cubes, cylinders of 160 mm diameter X 320 mm high of concrete were cast with steel fiber, polypropylene fiber, and hybrid fiber, respectively, by volume of cement. The water absorption test was conducted on 28 and 90 days, and the test results show that the addition of steel and polypropylene fibers to concrete exhibits better performance. The test results show that use of steel fiber-reinforced concrete improves compressive strength and split tensile strength. The durability of such concrete is also improved
  • No Thumbnail Available
    Item
    Ripening in chemically aggressive environment the HPC reinforced with hybrid steel fiber
    (2016) Boutiba, Aldjia; Chaid, R.; Molez, L.; Jauberthie, R.
  • No Thumbnail Available
    Item
    Study of calcined halloysite clay as pozzolanic material and its potential use in mortars
    (2012) Rabehi, B.; Boumchedda, K.; Ghernouti, Y.
    In this research, we will try to understand the mechanisms involved in the introduction of calcined clays in substitution for a portion of cement in the manufacture of mortars. This experimental work focuses on the recovery of a clay type haloysite quality three, from eastern Algeria. This clay comes from a region called Djbel Debbagh hence its name (DD3). The main objective of this study is to see the influence of the activated clay by calcination with different percentages of 5, 10, 15 and 20% in substitution of cement, on the physical-mechanical properties and behaviour of mortars towards chemical attacks. The study of pozzolanic activity allows to optimize a calcinations temperature of about 750°C, the study of its mechanical performance has shown an improvement of strength. Finaly the results of the durability test showed a good performance in different environments
  • No Thumbnail Available
    Item
    Strength and durability of mortar made with plastics bag waste (MPBW)
    (Springer, 2012) Ghernouti, Y.; Rabehi, B.
    The aim of this study is to explore the possibility of re-cycling a waste material that is now produced in large quantities, while achieving an improvement of the mechanical properties and durability of the mortar. This study examines the mechanical properties and the durability parameters of mortars incorporating plastics bag wastes (PBW) as fine aggregate by substitution of a variable percentage of sand (10, 20, 30 and 40 %). The influence of the PBW on the, compressive and flexural strength, drying shrinkage, fire resistance, sulfuric acid attack and chloride diffusion coefficient of the different mortars, has been investigated and analyzed in comparison to the control mortar. The results showed that the use of PBW enabled to reduce by 18–23 % the compressive strength of mortars containing 10 and 20 % of waste respectively, which remains always close to the reference mortar (made without waste). The replacement of sand by PBW in mortar slows down the penetration of chloride ions, improves the behavior of mortars in acidic medium and improves the sensitivity to cracking. The results of this investigation consolidate the idea of the use of PBW in the field of construction
  • No Thumbnail Available
    Item
    External corrosion to concrete sewers : a case study
    (2012) Oualit, M.; Jauberthie, R.; Rendell, F.; Melinge, Y.; Abadlia, Mohamed Tahar
    The aim of this study was to investigate the deterioration of concrete sewers and identify responsible factors; this investigation was a part of an ongoing asset evaluation for Rennes (France). The sewer studied was a 300 mm spun concrete pipe laid in 1992. Core samples (D 28 mm, L 40 mm) were taken from different areas of a pipe (invert, crown and side wall) and analysed to quantify the condition of the concrete and the extent of damage to the internal and external surface of the pipe. Physical and mechanical properties of the material were characterised. The depassivation of the concrete was measured by testing with a phenolphthalein solution. The study showed that in this particular case the external corrosion was extensive with minimal internal corrosion. It is proposed that the corrosion was possibly linked to the use of a contaminated backfill or organic acids in the ground water. Recommendations are proposed concerning the direction of future research
  • No Thumbnail Available
    Item
    Contribution of natural pozzolana to durability of high performance concrete in chloride environment
    (2011) Talah, Aissa; Kharchi, F.; Chaid, R.
    This paper presents mechanical and durability properties of natural pozzolana high performance concrete. Concrete’s these properties in a chloride environment improved by replacing 7.5% cement with pozzolana of 9600 cm2/g fineness. Reduction of both water absorption and chlorine ion permeability in the specimen showed that natural pozzolana is not only suitable for high performance concrete but also results in better properties than the control concrete
  • No Thumbnail Available
    Item
    Action of seawater on the durability of concrete with marble powder addition
    (2012) Chaid, R.; Jauberthie, R.; Rendell, F.
    Sustainable development requires a balance between development of infrastructure and environmental protection. The challenge to the cement and concrete industry is to produce a durable concrete at a competitive cost having minimal environmental impact. Current standards allow the use of additions that improve the concrete's characteristics and/or specific properties. Industrial by-products such as blast furnace slag, fly ash and silica fume, due to their hydraulic or pozzolanic characteristics, are used widely in the manufacture of durable and high performance concretes. This study aims to optimise the use of marble powder, a finely ground waste product from the marble industry; it is proposed that this can be used as a partial cement replacement material. Concretes incorporating this addition, when designed, manufactured and used correctly, can provide superior performance to conventional Portland cement concrete; not only are the mechanical properties improved but also the material’s durability