Prakash K G

@manipal.edu

Research scholar at civil Engineering Department
Manipal Institute of Technology, Manipal

Prakash K G


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https://researchid.co/prakashkg

RESEARCH INTERESTS

Finite element Analysis, Ground improvement Technique, Earthquake engineering, Geotechnical engineering, concrete technology
7

Scopus Publications

76

Scholar Citations

5

Scholar h-index

3

Scholar i10-index

Scopus Publications

  • Correction to: Stability of Embankment Constructed on Soft Soil Treated with Soil–Cement Columns (Transportation Infrastructure Geotechnology, (2023), 10, 4, (595-615), 10.1007/s40515-022-00237-3)
    K. G. Prakash, A. Krishnamoorthy
    Transportation Infrastructure Geotechnology, 2023
  • Stability of Embankment Constructed on Soft Soil Treated with Soil–Cement Columns
    K. G. Prakash, A. Krishnamoorthy
    Transportation Infrastructure Geotechnology, 2023
    The objective of this study was to investigate the effectiveness of soil–cement (SC) columns, provided either individually or in combination with lime columns, on the stability of embankment constructed on soft consolidating soil. The stability of the embankment was evaluated in terms of both the settlement and factor of safety at various time intervals during the consolidation. The effectiveness of columns was studied numerically using the two-dimensional plane strain finite element method. Settlement, excess pore water pressure and factor of safety were obtained at various time intervals. From the study, it was concluded that SC columns were effective in improving both the settlement and factor of safety of embankment throughout the consolidation of foundation soil. Provision of SC columns with lime columns was also effective in improving the stability of embankment. In addition, the stability of the embankment was affected by the arrangement of columns in the lime and SC composite system. The arrangement most effective to improve the settlement need not be the most effective system to improve the factor of safety after the construction of the embankment.
  • Effect of Polypropylene Macro Fiber on Geotechnical Characteristics of Black Cotton Soil: An Experimental Investigation and Correlation Analysis
    Rao A U, , Dhanalakshmi Kiran, Arun Kumar G S, Prakash K. G., Maddodi B S, , , , and
    Engineered Science, 2023
    Rao A U,1 Dhanalakshmi1, Arun Kumar G S2, K. G. Prakash1 and Maddodi B S1* 1Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India. 2School of civil Engineering, KLE Technological University, Hubballi, Karnataka, 580031, India.
  • Effectiveness of Stone and Deep Mixing Lime Columns on Stability of Embankments Constructed on Soft Consolidating Soil
    K. G. Prakash, A. Krishnamoorthy
    Geotechnical and Geological Engineering, 2023
    One of the most common, effective and innovative ways to improve soft soil is to use stone columns or lime columns. An extensive study has been conducted to find the effectiveness of lime or stone columns to improve the settlement of embankments constructed over soft consolidating soil. There are very few studies to evaluate the effects of columns on embankment safety factor during foundation soil consolidation. This study examined the effectiveness of stone and lime columns on the embankment stability, both in terms of safety factor and settlement, which are determined at different intervals of time, during the foundation soil consolidation. Further, it was also investigated the effectiveness of stone and lime column composite system. In this numerical study, two-dimensional plane strain finite element method is used. This study shows that, stone columns are more effective than lime columns in reducing post-construction settlement and to accelerate consolidation process, whereas lime columns are observed to be more effective than stone columns in improving the safety factor after the embankment construction indicating that the usage of stone or lime columns is significantly affected by the purpose for which columns are used. In addition, it is also observed that the column effectiveness on safety factor is strongly influenced by the relative shear strength of embankment and foundation soils. Further, provision of stone and lime columns as a composite system performs better than providing only stone or lime columns.
  • An Embankment Stability Analysis Using Finite Element Method Constructed over Soft Consolidating Soil Improved from Lime Columns and Prefabricated Vertical Drains
    Prakash K G, , A Krishnamoorthy, Maddodi B S, M Prasanna Kumar, Girish M G, , , , and
    Engineered Science, 2022
    The effectiveness of lime columns to improve the stability of embankments constructed on soft consolidating soil is investigated. Along with this, the effectiveness of prefabricated vertical drains (PVDs) with lime columns is also compared. Further, the combination of lime columns and PVDs is also studied to improve the embankment stability on consolidating soil. A numerical study is carried out using the two-dimensional plane strain finite element method. To study the effectiveness of lime columns on the embankment stability, the foundation soil settlement, excess pore water pressure, and factor of safety for embankment are obtained at various time intervals during the consolidation of foundation soil. This study shows that the settlement and excess pore water pressure decrease, and the factor of safety increases due to the provision of lime columns. Also, the settlement is lesser, and the factor of safety is larger for soil with lime columns compared to soil with PVDs, whereas, excess pore water pressure dissipates faster in soil with PVDs compared to soil with lime columns. This study concludes that, compared to PVDs, lime columns are more effective to improve the embankment factor of safety and foundation soil settlement, whereas PVDs are more effective in accelerating excess pore water pressure dissipation. The lime columns and PVDs combination is observed to be effective to improve all parameters.
  • Evaluation of Stability of Embankment Constructed on Soft Consolidating Soil with Lime–CFG Composite Column System
    K. G. Prakash, A. Krishnamoorthy
    International Journal of Geosynthetics and Ground Engineering, 2021
    Effectiveness of providing lime and CFG composite column system on the safety factor of embankment constructed on consolidating soil is studied at different time intervals during consolidation of foundation soil. The effectiveness of providing composite column system is compared with the effectiveness of providing only lime or CFG columns. In addition, the effectiveness of composite column system on settlement of foundation soil and consolidation process is also investigated. Embankment, foundation soil and columns are modeled using finite element method. Numbers of trial surfaces with different center and radius are generated at each time interval and the critical surface is selected to calculate the safety factor using the effective stresses obtained by finite element analysis. From the study, it is concluded that provision of lime or CFG columns, either individually or in combination, reduces the settlement and improves the safety factor. However, the most effective type of columns and their arrangement to reduce the settlement may not be the most effective to enhance the safety factor and hence, the type of columns and their arrangements has considerable influence on the purpose for which columns are provided.
  • Lime-cement columns with PVDs for embankment on soft consolidating soil
    K. G. Prakash, A. Krishnamoorthy
    Iop Conference Series Earth and Environmental Science, 2021
    The effectiveness of providing lime-cement (LC) columns along with Prefabricated Vertical Drains (PVDs) on the stability of embankment constructed on soft consolidation soil is investigated. Providing LC columns or PVDs separately or combining LC columns with PVDs is compared. Two-dimensional plane strain finite element method is used for the analysis. The parameters considered for the study are the variation of settlement and excess pore water pressure at various time intervals during the consolidation of foundation soil. From this study, it is concluded that, LC columns along with PVDs are the most effective technique compared to providing LC columns or PVDs separately to reduce both the displacement and excess pore water pressure for the embankment constructed on soft consolidating soil.

RECENT SCHOLAR PUBLICATIONS

  • Stability of embankment constructed on soft soil treated with soil–cement columns
    KG Prakash, A Krishnamoorthy
    Transportation Infrastructure Geotechnology 10 (4), 595-615 , 2023
    2023
    Citations: 24
  • Effectiveness of stone and deep mixing lime columns on stability of embankments constructed on soft consolidating soil
    KG Prakash, A Krishnamoorthy
    Geotechnical and Geological Engineering 41 (1), 533-552 , 2023
    2023
    Citations: 21
  • Effect of polypropylene macro fiber on geotechnical characteristics of black cotton soil: an experimental investigation and correlation analysis
    RA Uday, D Kiran, AK GS, P KG, BS Maddodi
    Engineered Science 21 (4), 775 , 2022
    2022
    Citations: 17
  • An embankment stability analysis using finite element method constructed over soft consolidating soil improved from lime columns and prefabricated vertical drains
    KG Prakash, A Krishnamoorthy, BS Maddodi, MP Kumar, MG Girish
    Engineered Science 17 (2), 309-318 , 2022
    2022
    Citations: 5
  • Evaluation of stability of embankment constructed on soft consolidating soil with lime–CFG composite column system
    KG Prakash, A Krishnamoorthy
    International Journal of Geosynthetics and Ground Engineering 7 (3), 58 , 2021
    2021
    Citations: 6
  • Lime-cement columns with PVDs for embankment on soft consolidating soil
    KG Prakash, A Krishnamoorthy
    IOP Conference Series: Earth and Environmental Science 796 (1), 012030 , 2021
    2021
    Citations: 3

MOST CITED SCHOLAR PUBLICATIONS

  • Stability of embankment constructed on soft soil treated with soil–cement columns
    KG Prakash, A Krishnamoorthy
    Transportation Infrastructure Geotechnology 10 (4), 595-615 , 2023
    2023
    Citations: 24
  • Effectiveness of stone and deep mixing lime columns on stability of embankments constructed on soft consolidating soil
    KG Prakash, A Krishnamoorthy
    Geotechnical and Geological Engineering 41 (1), 533-552 , 2023
    2023
    Citations: 21
  • Effect of polypropylene macro fiber on geotechnical characteristics of black cotton soil: an experimental investigation and correlation analysis
    RA Uday, D Kiran, AK GS, P KG, BS Maddodi
    Engineered Science 21 (4), 775 , 2022
    2022
    Citations: 17
  • Evaluation of stability of embankment constructed on soft consolidating soil with lime–CFG composite column system
    KG Prakash, A Krishnamoorthy
    International Journal of Geosynthetics and Ground Engineering 7 (3), 58 , 2021
    2021
    Citations: 6
  • An embankment stability analysis using finite element method constructed over soft consolidating soil improved from lime columns and prefabricated vertical drains
    KG Prakash, A Krishnamoorthy, BS Maddodi, MP Kumar, MG Girish
    Engineered Science 17 (2), 309-318 , 2022
    2022
    Citations: 5
  • Lime-cement columns with PVDs for embankment on soft consolidating soil
    KG Prakash, A Krishnamoorthy
    IOP Conference Series: Earth and Environmental Science 796 (1), 012030 , 2021
    2021
    Citations: 3