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Volume 41 Issue S1
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WU Hao-liang, BO Yu-ling, DU Yan-jun, WEI Ming-li, XUE Qiang. Acid neutralization capacity, strength properties and micro-mechanism of Pb-contaminated soils stabilized by alkali-activated GGBS[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 137-140. DOI: 10.11779/CJGE2019S1035
Citation: WU Hao-liang, BO Yu-ling, DU Yan-jun, WEI Ming-li, XUE Qiang. Acid neutralization capacity, strength properties and micro-mechanism of Pb-contaminated soils stabilized by alkali-activated GGBS[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 137-140. DOI: 10.11779/CJGE2019S1035
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Acid neutralization capacity, strength properties and micro-mechanism of Pb-contaminated soils stabilized by alkali-activated GGBS

  • 1. Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Southeast University, Nanjing 210096, China;
    2. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China;
    3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

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  • Received Date: April 28, 2019
  • Published Date: July 14, 2019
    Graphical Abstract
    • Abstract
  • The Pb-contaminated soils stabilized by alkali-activated GGBS and the mechanism are researched. The results show that the acid capacity value ascended with the binder dosage increases for the contaminated-soils stabilized by GGBS-MgO. The specific surface area of soils stabilized by GGBS-MgO is higher than that of uncontaminated soil as the Pb inhibites the hydration reaction of GGBS-MgO. The strength of stabilized soils with GGBS-MgO is higher than that of uncontaminated ones, which has a liner relationship with the specific surface area. The SEM and XRD results indicate that the main hydration products of stabilized contaminated and uncontaminated soil are C-S-H and Ht and can be analyzed using the XRD methods. The accumulative mercury and pore diameter results show that the accumulative mercury mass of the stabilized uncontaminated soils is higher than that of the contaminated soils stabilized by GGBS-MgO.
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    • References (9)
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