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    Wyświetlanie 1-3 z 3
    Tytuł:
    Contribution to the Valorization of Granulated Blast Furnace Slag in Soil Stabilization
    Autorzy:
    Djouimaa, Sarah
    Missaouri, Sabrina
    Handel, Naoual
    Sid, Madani
    Powiązania:
    https://bibliotekanauki.pl/articles/2051599.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    swelling pressure
    granulated blast furnace slag
    cement
    stabilization
    SEM analysis
    ciśnienie pęcznienia
    żużel granulowany
    stabilizacja
    analiza SEM
    Opis:
    The treatment of expansive soil is generally the most effective process for the stabilization of swelling clay. In this work, we will investigate the influence of the treatment of an expansive soil using granulated blast furnace slag (GGBS) alone and granulated blast furnace slag activated by cement (GGBS/C) by mechanical, physical and chemical tests. The results obtained show an increased pH, an improved plasticity as well as a significant reduction in swelling potential and swelling pressure following a percentage increase in additives. In addition, a change in the adsorption of methylene blue molecules (VBs) and in the microstructure of the expansive soil is observed after treatment. Utilization of both GGBS alone and GGBS activated by cement has a significant effect on the behavior of the swelling clay but the GGBS activated by cement exhibits superior results. The use of GGBS in the stabilization of soil will have both economic and environmental benefits.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 134-151
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Treatment of Collapsible Soils with Granulated Blast Furnace Slag and Calcined Eggshell Waste
    Autorzy:
    Adjabi, Souhila
    Nouaouria, Mohamed Salah
    Djebabla, Wafa
    Powiązania:
    https://bibliotekanauki.pl/articles/2051699.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    recycling of waste
    shear strength
    cohesion
    internal friction angle
    blast furnace slag
    calcined eggshell
    collapsible soil
    compaction energy
    recykling odpadów
    spójność
    kąt tarcia wewnętrznego
    żużel wielkopiecowy
    Opis:
    In order to meet environmental and socio-economic challenges, the recycling of waste tobe used in the treatment of geotechnical problems is one of the main ways of preserving the environment with a lower economic value. The objective of this experimental work is to improve the characteristics and to study the mechanical behaviour of collapsible soil treated with a new hydraulic stabilizer composed of Crushed Granulated Blast Furnace Slag (CGBS) active by Eggshell Waste (CES). The specimens were mixed with stabilizer content, varying from 0 to 15% in mass, with an initial water content of 4, 6 and 8% respectively. in mass. Oedometer apparatus was used to study the addition of new hydraulic stabilizer effect on the Collapse Potential. Triaxial tests are also conducted to determine the shear strength parameters (cohesion and internal friction angle) of this treated soil. The results of this research study show that the mechanical properties of the treated collapsible soil were significantly improved. An appreciable reduction in the collapse potential is observed. The addition of 15% of this new stabilizer with initial water content of 4% under a compaction of 60 blows/ layer is capable of increasing internal friction angle and cohesion. It can be concluded from this study that the mixture of granulated slag and calcined eggshell can be used as an effective treatment of collapsibility phenomenon at low cost while protecting the environment from industrial waste.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 2; 138-162
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure Settlement Behaviour and Bearing Capacity of Asymmetric Embedded Plus Shaped Footing on Layered Sand
    Autorzy:
    Rawat, Priyanka
    Dutta, Rakesh Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/2051675.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    granulated blast furnace slag
    soil stabilization
    settlement
    shaped footing
    numerical investigations
    żużel wielkopiecowy granulowany
    stabilizacja gruntu
    osiadanie
    ława fundamentowa
    badania numeryczne
    Opis:
    The aim of the present numerical study was to analyse the pressure settlement behaviour and bearing capacity of asymmetric plus shaped footing resting on loose sand overlying dense sand at varying embedment depth. The numerical investigation was carried out using ABAQUS software. The effect of depth of embedment, friction angle of upper loose and lower dense sand layer and thickness of upper loose sand on the bearing capacity of the asymmetric plus shaped footing was studied in this investigation. Further, the comparison of the results of the bearing capacity was made between the asymmetric and symmetric plus shaped footing. The results reveal that with increase in depth of embedment, the dimensionless bearing capacity of the footings increased. The highest increase in the dimensionless bearing capacity was observed at embedment ratio of 1.5. The increase in the bearing capacity was 12.62 and 11.40 times with respect to the surface footings F1 and F2 corresponding to a thickness ratio of 1.5. The lowest increase in the dimensionless bearing capacity was observed at embedment ratio of 0.1 and the corresponding increase in the bearing capacity was 1.05 and 1.02 times with respect to the surface footing for footings F1 and F2 at a thickness ratio of 1.5.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 152-176
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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