A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Emerging Trends in Ground Improvement Techniques
The developing countries like India are facing challenging infrastructure projects on fine grained compressible soft foundation soils in the areas of airways, highways and railways. Therefore it is necessary to develop new innovative ground improvement techniques, which should be technically feasible and economically viable for the applications in civil engineering. Therefore an attempt has been focused in this paper to provide new techniques for ground improvement using Natural Prefabricated Vertical Drains (NPVD) and Polymer Prefabricated Vertical Drains (PPVD), geocell and geofoam. The flow rate with different hydraulic gradients has been compared with NPVD and PPVD. It is observed that the flow rate of NPVD is lower with respect to PPVD. Three dimensional geocell mattresses made of geosynthetic material and expanded polystyrene geofoam has been used in swelling soils. The finite element analysis has been carried out without and with geocell system using PLAXIS 2D professional version as a tool. It has been observed that the new system reduces settlement and improves the bearing capacity. Also Expanded Polystyrene (EPS) geofoam has been used as a fill material in the embankments which is an effective solution against the conventional fill material. The slope stability analysis of embankment has been carried out with conventional fill and EPS geofoam using PLAXIS 2D professional software. It has been observed that there is considerable increase in the factor of safety of the embankment made up of EPS geofoam with respect to conventional fill. Using geofoam as filling material a significant reduction in settlement has been observed.
Emerging Trends in Ground Improvement Techniques
The developing countries like India are facing challenging infrastructure projects on fine grained compressible soft foundation soils in the areas of airways, highways and railways. Therefore it is necessary to develop new innovative ground improvement techniques, which should be technically feasible and economically viable for the applications in civil engineering. Therefore an attempt has been focused in this paper to provide new techniques for ground improvement using Natural Prefabricated Vertical Drains (NPVD) and Polymer Prefabricated Vertical Drains (PPVD), geocell and geofoam. The flow rate with different hydraulic gradients has been compared with NPVD and PPVD. It is observed that the flow rate of NPVD is lower with respect to PPVD. Three dimensional geocell mattresses made of geosynthetic material and expanded polystyrene geofoam has been used in swelling soils. The finite element analysis has been carried out without and with geocell system using PLAXIS 2D professional version as a tool. It has been observed that the new system reduces settlement and improves the bearing capacity. Also Expanded Polystyrene (EPS) geofoam has been used as a fill material in the embankments which is an effective solution against the conventional fill material. The slope stability analysis of embankment has been carried out with conventional fill and EPS geofoam using PLAXIS 2D professional software. It has been observed that there is considerable increase in the factor of safety of the embankment made up of EPS geofoam with respect to conventional fill. Using geofoam as filling material a significant reduction in settlement has been observed.
Emerging Trends in Ground Improvement Techniques
Asha, B.S. (author) / Ram Rathan Lal, B. (author) / Padade, A. H. (author) / Mandal, T. (author) / Mandal, J. N. (author)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 594-603
2012-03-29
Conference paper
Electronic Resource
English
Emerging Trends in Ground Improvement Techniques
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