Radhey Sharma | West Virginia University (original) (raw)

Papers by Radhey Sharma

Research paper thumbnail of Erratum: An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Géotechnique

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Research paper thumbnail of An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Géotechnique, 2003

The paper presents an elasto-plastic model for unsaturated soils that takes explicitly into accou... more The paper presents an elasto-plastic model for unsaturated soils that takes explicitly into account the mechanisms with which suction affects mechanical behaviour as well as their dependence on degree of saturation. The proposed model is formulated in terms of two constitutive variables directly related to these suction mechanisms: the average skeleton stress, which includes the average fluid pressure acting on the soil pores, and an additional scalar constitutive variable, ξ, related to the magnitude of the bonding effect exerted by meniscus water at the inter-particle contacts. The formulation of the model in terms of variables closely related to specific behaviour mechanisms leads to a remarkable unification of experimental results of tests carried out with different suctions. The analysis of experimental isotropic compression data strongly suggests that the quotient between the void ratio, e, of an unsaturated soil and the void ratio es, corresponding to the saturated state at t...

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Research paper thumbnail of Discussion on" An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Geotechnique, 2004

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Research paper thumbnail of Hurricane Irma: Consequences of Intense Rainfall and Storm Surge from a Tropical Storm in North and Central Florida

Hurricane Irma affected the Florida peninsula from September 9-11, 2017, with high winds, rainfal... more Hurricane Irma affected the Florida peninsula from September 9-11, 2017, with high winds, rainfall, and storm surge. Although the storm made landfall on the west coast of Florida, impacts of the rainfall and storm surge affected central and northeast Florida. A GEER team mobilized on September 23, 2017, spent three days documenting sinkhole damage in central Florida, coastal scour and erosion along the northeast coast of Florida, and infrastructure damage in northeast Florida. Numerous sites with geotechnical damage were documented but this case history focuses specifically on sinkhole damage in The Villages, erosion and scour at Vilano Beach, failure of a concrete cover earth dam at Hampton Lake, and bridge embankment damage on US-17 over the Trout River. The most notable challenges to reconnaissance were the widespread and varied nature of the damages from Hurricane Irma and the rapid repair of damaged infrastructure that required the team to work closely with local, state, and fe...

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Research paper thumbnail of Optimization and management of materials in earthwork construction

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Research paper thumbnail of Seasonal Variation in the Layers of Highway US 20

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Research paper thumbnail of Patterns and mechanisms of light non-aqueous phase liquid in unsaturated sand

Geotechnique, Jan 3, 2003

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Research paper thumbnail of Bayesian Updating Approach for Flexible Pavements Considering Fatigue and Rutting Failures

Journal of Testing and Evaluation, 2015

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Research paper thumbnail of Hydraulic Characteristics of the Hurricane Surge in the Mississippi Delta and Implications for Geotechnical Design of Coastal Protections

GeoCongress 2008, 2008

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Research paper thumbnail of Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils

Advances in Unsaturated Soil, Seepage, and Environmental Geotechnics, 2006

Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils. [ASCE Conf... more Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils. [ASCE Conference Proceedings 192, 8 (2006)]. Radhey S. Sharma, Longjie Hong, Sonal Singhal. Abstract. Unsaturated soils comprise ...

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Research paper thumbnail of Laboratory Investigation and Analytical Solution to the Behavior of Foundations on Geosynthetic Reinforced Sands

Sound Geotechnical Research to Practice, 2013

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Research paper thumbnail of Efficient reliability-based approach for mechanistic-empirical asphalt pavement design

Construction and Building Materials, 2014

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Research paper thumbnail of Evolution of Degree of Saturation and Suction Relationships under Dynamic Flow

Unsaturated Soils 2006, 2006

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Research paper thumbnail of Model footing tests on geosynthetic reinforced soils

Characterization, Mechanisms, Simulation, and Modeling, 2008

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Research paper thumbnail of An experimental evaluation of the behavior of footings on geosynthetic-reinforced sand

Soils and Foundations, 2013

ABSTRACT This research was performed to investigate the behavior of geosynthetic-reinforced sandy... more ABSTRACT This research was performed to investigate the behavior of geosynthetic-reinforced sandy soil foundations and to study the effect of different parameters contributing to their performance using laboratory model tests. The parameters investigated in this study included top layer spacing, number of reinforcement layers, vertical spacing between layers, tensile modulus and type of geosynthetic reinforcement, embedment depth, and shape of footing. The effect of geosynthetic reinforcement on the vertical stress distribution in the sand and the strain distribution along the reinforcement were also investigated. The test results demonstrated the potential benefit of using geosynthetic-reinforced sand foundations. The test results also showed that the reinforcement configuration/layout has a very significant effect on the behavior of reinforced sand foundation. With two or more layers of reinforcement, the settlement can be reduced by 20% at all footing pressure levels. Sand reinforced by the composite of geogrid and geotextile performed better than those reinforced by geogrid or geotextile alone. The inclusion of reinforcement can redistribute the applied footing load to a more uniform pattern, hence reducing the stress concentration, which will result reduced settlement. Finally, the results of model tests were compared with the analytical solution developed by the authors in previous studies; and the analytical solution gave a good predication of the experimental results of footing on geosynthetic reinforced sand.

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Research paper thumbnail of Laboratory Investigation of the Behavior of Square Footings on Reinforced Crushed Limestone

GeoCongress 2008, 2008

This research study aims at investigating the behavior of spread footings on reinforced crushed l... more This research study aims at investigating the behavior of spread footings on reinforced crushed limestone using laboratory model tests. The model tests were conducted inside a steel box with dimensions of 1.5 m (length) × 0.91 m (width) × 0.91 m (height) using a steel plate with ...

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Research paper thumbnail of Granular pile-anchors

Recent Advances in Characterization and Treatment, 2006

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Research paper thumbnail of Optimization and management of materials in earthwork construction

Different earth materials, such as soil and rock, are used in the construction of geotechnical sy... more Different earth materials, such as soil and rock, are used in the construction of geotechnical systems including foundations, retaining walls, embankments and road pavements and air-field pavements. Often site soils are unacceptable for the intended function and must be replaced with better quality materials or improved. One method of improvement is to mix high quality site materials with lesser quality site materials to provide an acceptable soil material. In Iowa, materials for earthwork construction are classified, based on their suitability, as: select, suitable, and unsuitable soils. In this study, three unsuitable soils were mixed with one select soil at various proportions (unsuitable : select = 25%:75%, 50%:50% and 75%:25%) to investigate how the engineering properties can be improved at different select-unsuitable ratios and evaluate the potential of using the blends at various embankment layers. Experimental results indicate that resulting blends are for the most part acce...

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Research paper thumbnail of Laboratory Investigation of Behavior of Foundations on Geosynthetic-Reinforced Clayey Soil

Transportation Research Record: Journal of the Transportation Research Board, 2007

The behavior of foundations on geosynthetic-reinforced clayey soil of low to medium plasticity us... more The behavior of foundations on geosynthetic-reinforced clayey soil of low to medium plasticity using laboratory model footing tests was investigated. The model footing was made of a steel plate with dimensions of 152 mm (6 in.) × 152 mm (6 in.). The parameters investigated in this study included the top layer spacing, the number of reinforcement layers, the vertical spacing between layers, and the stiffness and type of reinforcement. The effect of reinforcement on the vertical stress distribution in the clay and the strain distribution along the reinforcement were also investigated. The test results showed that the inclusion of reinforcement could significantly improve the soil's bearing capacity and reduce the footing settlement. With three or more layers of reinforcement, the settlement could be reduced by approximately 50% at a relatively medium surface pressure. The geogrids with higher stiffness performed better than geogrids with lower stiffness. The test results also show...

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Research paper thumbnail of Effect of Fly Ash on Engineering Properties of Expansive Soils

Journal of Geotechnical and Geoenvironmental Engineering, 2004

This note presents a study of the efficacy of fly ash as an additive in improving the engineering... more This note presents a study of the efficacy of fly ash as an additive in improving the engineering characteristics of expansive soils. An experimental program has evaluated the effect of the fly ash content on the free swell index, swell potential, swelling pressure, plasticity, ...

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Research paper thumbnail of Erratum: An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Géotechnique

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Research paper thumbnail of An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Géotechnique, 2003

The paper presents an elasto-plastic model for unsaturated soils that takes explicitly into accou... more The paper presents an elasto-plastic model for unsaturated soils that takes explicitly into account the mechanisms with which suction affects mechanical behaviour as well as their dependence on degree of saturation. The proposed model is formulated in terms of two constitutive variables directly related to these suction mechanisms: the average skeleton stress, which includes the average fluid pressure acting on the soil pores, and an additional scalar constitutive variable, ξ, related to the magnitude of the bonding effect exerted by meniscus water at the inter-particle contacts. The formulation of the model in terms of variables closely related to specific behaviour mechanisms leads to a remarkable unification of experimental results of tests carried out with different suctions. The analysis of experimental isotropic compression data strongly suggests that the quotient between the void ratio, e, of an unsaturated soil and the void ratio es, corresponding to the saturated state at t...

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Research paper thumbnail of Discussion on" An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behaviour

Geotechnique, 2004

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Research paper thumbnail of Hurricane Irma: Consequences of Intense Rainfall and Storm Surge from a Tropical Storm in North and Central Florida

Hurricane Irma affected the Florida peninsula from September 9-11, 2017, with high winds, rainfal... more Hurricane Irma affected the Florida peninsula from September 9-11, 2017, with high winds, rainfall, and storm surge. Although the storm made landfall on the west coast of Florida, impacts of the rainfall and storm surge affected central and northeast Florida. A GEER team mobilized on September 23, 2017, spent three days documenting sinkhole damage in central Florida, coastal scour and erosion along the northeast coast of Florida, and infrastructure damage in northeast Florida. Numerous sites with geotechnical damage were documented but this case history focuses specifically on sinkhole damage in The Villages, erosion and scour at Vilano Beach, failure of a concrete cover earth dam at Hampton Lake, and bridge embankment damage on US-17 over the Trout River. The most notable challenges to reconnaissance were the widespread and varied nature of the damages from Hurricane Irma and the rapid repair of damaged infrastructure that required the team to work closely with local, state, and fe...

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Research paper thumbnail of Optimization and management of materials in earthwork construction

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seasonal Variation in the Layers of Highway US 20

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Patterns and mechanisms of light non-aqueous phase liquid in unsaturated sand

Geotechnique, Jan 3, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bayesian Updating Approach for Flexible Pavements Considering Fatigue and Rutting Failures

Journal of Testing and Evaluation, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Hydraulic Characteristics of the Hurricane Surge in the Mississippi Delta and Implications for Geotechnical Design of Coastal Protections

GeoCongress 2008, 2008

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils

Advances in Unsaturated Soil, Seepage, and Environmental Geotechnics, 2006

Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils. [ASCE Conf... more Developments in Measurement of Volume Change in Triaxial Testing of Unsaturated Soils. [ASCE Conference Proceedings 192, 8 (2006)]. Radhey S. Sharma, Longjie Hong, Sonal Singhal. Abstract. Unsaturated soils comprise ...

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Research paper thumbnail of Laboratory Investigation and Analytical Solution to the Behavior of Foundations on Geosynthetic Reinforced Sands

Sound Geotechnical Research to Practice, 2013

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Research paper thumbnail of Efficient reliability-based approach for mechanistic-empirical asphalt pavement design

Construction and Building Materials, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Evolution of Degree of Saturation and Suction Relationships under Dynamic Flow

Unsaturated Soils 2006, 2006

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Model footing tests on geosynthetic reinforced soils

Characterization, Mechanisms, Simulation, and Modeling, 2008

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An experimental evaluation of the behavior of footings on geosynthetic-reinforced sand

Soils and Foundations, 2013

ABSTRACT This research was performed to investigate the behavior of geosynthetic-reinforced sandy... more ABSTRACT This research was performed to investigate the behavior of geosynthetic-reinforced sandy soil foundations and to study the effect of different parameters contributing to their performance using laboratory model tests. The parameters investigated in this study included top layer spacing, number of reinforcement layers, vertical spacing between layers, tensile modulus and type of geosynthetic reinforcement, embedment depth, and shape of footing. The effect of geosynthetic reinforcement on the vertical stress distribution in the sand and the strain distribution along the reinforcement were also investigated. The test results demonstrated the potential benefit of using geosynthetic-reinforced sand foundations. The test results also showed that the reinforcement configuration/layout has a very significant effect on the behavior of reinforced sand foundation. With two or more layers of reinforcement, the settlement can be reduced by 20% at all footing pressure levels. Sand reinforced by the composite of geogrid and geotextile performed better than those reinforced by geogrid or geotextile alone. The inclusion of reinforcement can redistribute the applied footing load to a more uniform pattern, hence reducing the stress concentration, which will result reduced settlement. Finally, the results of model tests were compared with the analytical solution developed by the authors in previous studies; and the analytical solution gave a good predication of the experimental results of footing on geosynthetic reinforced sand.

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Research paper thumbnail of Laboratory Investigation of the Behavior of Square Footings on Reinforced Crushed Limestone

GeoCongress 2008, 2008

This research study aims at investigating the behavior of spread footings on reinforced crushed l... more This research study aims at investigating the behavior of spread footings on reinforced crushed limestone using laboratory model tests. The model tests were conducted inside a steel box with dimensions of 1.5 m (length) × 0.91 m (width) × 0.91 m (height) using a steel plate with ...

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Research paper thumbnail of Granular pile-anchors

Recent Advances in Characterization and Treatment, 2006

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Optimization and management of materials in earthwork construction

Different earth materials, such as soil and rock, are used in the construction of geotechnical sy... more Different earth materials, such as soil and rock, are used in the construction of geotechnical systems including foundations, retaining walls, embankments and road pavements and air-field pavements. Often site soils are unacceptable for the intended function and must be replaced with better quality materials or improved. One method of improvement is to mix high quality site materials with lesser quality site materials to provide an acceptable soil material. In Iowa, materials for earthwork construction are classified, based on their suitability, as: select, suitable, and unsuitable soils. In this study, three unsuitable soils were mixed with one select soil at various proportions (unsuitable : select = 25%:75%, 50%:50% and 75%:25%) to investigate how the engineering properties can be improved at different select-unsuitable ratios and evaluate the potential of using the blends at various embankment layers. Experimental results indicate that resulting blends are for the most part acce...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Laboratory Investigation of Behavior of Foundations on Geosynthetic-Reinforced Clayey Soil

Transportation Research Record: Journal of the Transportation Research Board, 2007

The behavior of foundations on geosynthetic-reinforced clayey soil of low to medium plasticity us... more The behavior of foundations on geosynthetic-reinforced clayey soil of low to medium plasticity using laboratory model footing tests was investigated. The model footing was made of a steel plate with dimensions of 152 mm (6 in.) × 152 mm (6 in.). The parameters investigated in this study included the top layer spacing, the number of reinforcement layers, the vertical spacing between layers, and the stiffness and type of reinforcement. The effect of reinforcement on the vertical stress distribution in the clay and the strain distribution along the reinforcement were also investigated. The test results showed that the inclusion of reinforcement could significantly improve the soil's bearing capacity and reduce the footing settlement. With three or more layers of reinforcement, the settlement could be reduced by approximately 50% at a relatively medium surface pressure. The geogrids with higher stiffness performed better than geogrids with lower stiffness. The test results also show...

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Research paper thumbnail of Effect of Fly Ash on Engineering Properties of Expansive Soils

Journal of Geotechnical and Geoenvironmental Engineering, 2004

This note presents a study of the efficacy of fly ash as an additive in improving the engineering... more This note presents a study of the efficacy of fly ash as an additive in improving the engineering characteristics of expansive soils. An experimental program has evaluated the effect of the fly ash content on the free swell index, swell potential, swelling pressure, plasticity, ...

Bookmarks Related papers MentionsView impact