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27
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Introduction
Divya P.V. currently works at the Civil Engineering Department, Indian Institute of Technology Palakkad. Divya does research in Geotechnical Engineering. Her research interest include Geosynthetics, Ground Improvement, Reinforced soil, Green-Geotechnics, Mechanically stabilised earth (MSE) structures and Centrifuge Modelling. Their most recent publication is 'Performance of Geosynthetic Reinforced Steep Soil Slopes at the onset of Rainfall Infiltration.'
Additional affiliations
April 2009 - August 2012
Publications
Publications (27)
The influence of discrete and randomly distributed fibers (DRDF) on the improvement of the resistance to cracking of clay-based landfill covers was studied by conducting a series of centrifuge model tests. A motor-based differential settlement simulator (MDSS) was used to induce differential settlements to the soil layers during centrifuge tests pe...
Efficiency of fiber reinforcements to ensure the sealing efficiency of the landfill cap soil barriers so as to isolate the waste from the environment was demonstrated in the present study. Evaluation of hydraulic conductivity of soil barrier materials with different types of fibers, fiber dosage and fiber lengths are very important to ensure the se...
Rainfall induced slope failure
In the present study, performance of geosynthetic reinforced MSE walls backfilled with locally available marginal lateritic soil at the onset of rainfall infiltration was investigated. Two different types of geosynthetics reinforcements were used. One was a conventional type of geogrids usually used in MSE walls, and the other was composite geogrid...
Seasonal variations in the soil moisture content can result in significant changes in soil suction. Rainfall infiltration can cause loss of matric suction in the unsaturated lateritic soil. Several failures are reported in lateritic soil slopes in Kerala, associated with rainfall. Geosynthetics are generally used for improving the stability of soil...
The frequency of rainfall-triggered landslides is increasing across the world. Infiltration of rainwater into the slopes with low permeable soil increases the pore water pressure and reduces the stability of slopes. Also, in the recent past, Kerala experienced many rainfall-triggered landslides. One of the most efficient way to prevent rainfall-tri...
The present study investigated the influence of biochar on various geotechnical properties of clayey soil. Biochar, a carbon-rich product, was amended with the soil at different percentages such as 5, 10 and 15%. Laboratory tests were conducted to evaluate the feasibility of utilization of biochar in enhancing the integrity of soil slopes with an e...
Reinforced soil walls are cost-effective alternatives to earth-retaining structures which can accommodate more settlements than conventional retaining wall systems. Ideally, freely draining granular materials such as sand are used as the backfills. But, scarcity of ideal granular materials necessitated the researchers to explore other alternatives....
Major part of Kerala is covered with lateritic soil. Lateritic soils, in general, can withstand high stress under unsaturated conditions. However, during rainfall infiltration, there is a tendency that the lateritic soil may undergo large and sudden deformation. In the recent past, Kerala experienced heavy rainfall induced distress. Associated with...
The influence of geomembrane in maintaining the sealing efficiency of a landfill cover system at the onset of flexural distress was studied by conducting a series of centrifuge tests performed at 40 gravities. The tests were performed using a 4.5 m radius beam centrifuge having a capacity of 2,500 g-kN available at IIT Bombay on model composite bar...
The soil barrier which is commonly used as one of the impervious barriers in base and cover systems has to sustain differential settlements and prevent the migration of biogas to the atmosphere. To evaluate the gas intactness of soil barrier under distortion, an attempt has been made to develop a test setup which can simultaneously induce different...
The objective of this paper is to examine the deformation behavior and water tightness of clay-based composite cover of landfills subjected to differential settlements using a centrifuge modeling technique. A short series of centrifuge tests were performed at 40 gravities on model composite cover system formed using a model clay barrier of 15mm (0....
The influence of discrete and randomly distributed polyester (PET) fibers in improving the crack resistance and water-tightness of clay barriers was studied by conducting a series of centrifuge model tests at 40 gravities using a large beam centrifuge available at Indian Institute of Technology Bombay. Model clay barriers with and without fibers we...
Tension cracking is a very important phenomenon in the case of compacted fine grained soils, which are commonly used in earth dams, embankments, and waste containment systems. The strength and permeability of earthen structures can be seriously affected by the formation of tensile cracks. The purpose of this paper is to evaluate the effect of discr...
Clay-based landfill covers often have a geomembrane (GM) layer sandwiching between the clay barrier and the cover soil. The knowledge pertaining to the deformation behaviour of a clay barrier along with geomembrane subjected to differential settlements is very limited. Hence, the main objective of this paper is to examine the influence of GM on the...
The objective of this paper is to examine the deformation behavior and water tightness of clay-based composite cover of landfills subjected to differential settlements using a centrifuge modeling technique. A short series of centrifuge tests were performed at 40 gravities on model composite cover system formed using a model clay barrier of 15mm (0....
The main objective of this paper is to examine the influence of discrete and
randomly distributed geofiber reinforcement on the integrity of clay-based landfill covers subjected
to differential settlements in a geotechnical centrifuge. A series of centrifuge tests was performed
on model clay-based landfill covers with and without geofiber reinforce...
The main objective of the present study is to examine the behavior of model soil barriers of landfill covers at the onset of differential settlements with and without geofiber reinforcement in a geotechnical centrifuge. A motor-based differential settlement simulator was used for inducing continuous differential settlements to the moist-compacted m...
Projects
Projects (3)
1. Application of locally available low permeable lateritic soils in Kerala, as a backfill for reinforced soil slopes and MSE walls
2. Application of composite geogrids and the interaction with the unsaturated lateritic soils at the onset of rainwater infiltration
3. Performance of the structure with unsaturated lateritic backfill at the onset of rainwater infiltration
a. Strength and deformation behaviour
b. Rainfall infiltration Analysis
c. Slope stability Analysis
d. Influence of seasonal variations
4. Physical Modelling: Performance of instrumented MSE structures under seasonal variations
a. Measurement of face displacements
b. Reinforcement displacement and strains
c. Soil matric suction monitoring
d. Pore pressure distribution
- Rainfall induced landslides in residual lateritic soil slopes
- Regional landslide modelling
- Landslide susceptibility
- Mitigation measures
- Rainfall induced slope failures and landslides
- Reinforced soil slopes for landslide mitigation
- Internal erosion and soil piping
- Highway MSE walls
