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    Sulphate soil stabilisation with magnesium binders for road subgrade construction

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    2020100233_Seco_SulphateSoil.pdf (1.551Mb)
    Date
    2020
    Author
    Seco Meneses, Andrés Upna Orcid
    Castillo, Jesús María del Upna Orcid
    Espuelas Zuazu, Sandra Upna Orcid
    Marcelino Sádaba, Sara Upna Orcid
    García, Beñat 
    Version
    Acceso abierto / Sarbide irekia
    Type
    Artículo / Artikulua
    Version
    Versión aceptada / Onetsi den bertsioa
    Impact
     
     
     
    10.1080/10298436.2020.1825711
     
     
     
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    Abstract
    This paper analyzes the ability of magnesium oxide-based additives to stabilise a low bearing gypsum marly soil, in order to reach subgrade requirements. This soil was not adequate for stabilisation with lime or cement because of its high sulphate content. Binders considered in this investigation were composed of three reactive Mg products and by products, both with and without ground granulated ... [++]
    This paper analyzes the ability of magnesium oxide-based additives to stabilise a low bearing gypsum marly soil, in order to reach subgrade requirements. This soil was not adequate for stabilisation with lime or cement because of its high sulphate content. Binders considered in this investigation were composed of three reactive Mg products and by products, both with and without ground granulated blast furnace slags (GGBS). They were compared to two cements and an aerial lime as soil stabilisers in a laboratory investigation and a field trial. Laboratory tests showed that Mg products with GGBS reached strength results close and at times even better than those of cement. One of the Mg products was the only additive able to reduce the natural soil swelling. Leaching tests demonstrated the ability of the Mg products to reduce the soil leaching of substances like calcium, magnesium, sulphate and chloride. In field trials two of the Mg products combined with GGBS met the bearing capacity requirements for subgrades, in accordance with the Spanish standard. [--]
    Subject
    Gypsum marly soil, Sulphate, Soil stabilisation, Subgrade, Engineering properties
     
    Publisher
    Taylor and Francis
    Published in
    International Journal of Pavement Engineering, 2020
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería / Nafarroako Unibertsitate Publikoa. Ingeniaritza Saila / Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISC - Institute of Smart Cities
     
    Publisher version
    https://doi.org/10.1080/10298436.2020.1825711
    URI
    https://hdl.handle.net/2454/39288
    Sponsorship
    This work was supported by Gobierno de Navarra and Fondo Europeo de Desarrollo Regional [grant number 0011-1365-2018-000093].
    Appears in Collections
    • Artículos de revista - Aldizkari artikuluak [4205]
    • Artículos de revista ISC - ISC aldizkari artikuluak [341]
    • Artículos de revista DING - INGS Aldizkari artikuluak [104]
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