This research conducted a triaxial test on lime-treated clay with different contents to analyze the effect of mechanical properties. Scanning electron microscope (SEM) and low-field nuclear magnetic resonance (NMR) analysis were used to analyze the effect. X-ray diffraction (XRD) was used to analyze the chemical changes of calcium oxide on red clay. The results show that with the increase of calcium oxide content, the strength increases, and it can be increased by 282% at 200 kPa confining pressure. The calcium oxide in the red clay reacted with the water in the soil to form calcium hydroxide. The alkaline environment will erode the edge of the soil particles and cause pores to become larger. SEM observed that the addition of calcium oxide caused the agglomeration of soil particles and changed the pore structure of red clay. Low-field NMR showed that calcium oxide had a significant effect on the pore structure of red clay. Calcium oxide increased the total pore volume of the soil sample. Calcium oxide had a substantial influence on the three pore distribution ranges, I (1.1–11 µm), II (15–137 µm), and III (137–512 µm). The porosity fitted with shear strength, it negatively correlated with I and III, and positively correlated with II.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Mechanical Properties and Microstructure of Lime-Treated Red Clay


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Chen, Lijie (author) / Chen, Xuejun (author) / Wang, He (author) / Huang, Xiang (author) / Song, Yu (author)

    Published in:

    Publication date :

    2021-01-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Shear strength and compressibility behaviour of lime-treated organic clay

    Yunus, Nor Zurairahetty Mohd / Wanatowski, Dariusz / Hassan, Norhidayah Abdul et al. | Online Contents | 2016


    Shear strength and compressibility behaviour of lime-treated organic clay

    Yunus, Nor Zurairahetty Mohd / Wanatowski, Dariusz / Hassan, Norhidayah Abdul et al. | Springer Verlag | 2015


    Mechanical properties, phase composition and microstructure of activated Metakaolin-slaked lime binder

    Morsy, M. S. / Al-Salloum, Y. A. / Almusallam, T. H. et al. | Springer Verlag | 2016


    Mechanical properties, phase composition and microstructure of activated Metakaolin-slaked lime binder

    Morsy, M. S. / Al-Salloum, Y. A. / Almusallam, T. H. et al. | Online Contents | 2017


    Drained Shear Strength of Lime-Clay Mixes

    Rogers, C.D.F. | Online Contents | 1994