Adimoolam Boominathan

Department Of Civil Engineering

Subhadeep Banerjee

Ramon Varghese

Cyclic loading

SANDY SOIL

Silty soil

Soil mechanics

Gangetic Plain

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Soil Dynamics and Earthquake Engineering

The fundamental behaviour of fine-grained geomaterials compacted over a range of moisture content is strongly influenced by the resulting porosity and pore size distribution (PSD) characteristics. The majority of pertinent studies have employed mercury intrusion porosimetry (MIP) for determining these properties. Since the PSD analysis using MIP technique demands moisture free specimen, it is necessary to select an appropriate sample drying technique that minimises the alteration of soil fabric during sample preparation. In view of this, the present study evaluated the influence of various drying techniques, such as oven-drying, solvent-replacement and freeze-drying, up on the soil fabric in terms of its PSD characteristics. Further, the study investigated the role of placement moisture content on the modifications of soil fabric when soil specimens are compacted over a range of compaction states, using scanning electron microscopy. Based on the obtained results, it is demonstrated that the sample drying using lyophilisation technique is efficacious. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.

International Journal of Geotechnical Engineering

Effect of drying technique on pore structure characteristics of fine-grained geomaterials

Post-cyclic undrained shear strength is primarily controlled by the cyclic loading parameters and loading conditions. In the present paper, series of undrained constant strain cyclic triaxial test followed by strain-controlled monotonic shearing was carried out on normally consolidated marine clay specimens. An attempt was made to study the variation of post-cyclic undrained shear strength with the cyclic loading conditions namely staged cyclic loading and continuous cyclic loading. The effect of cyclic loading parameters such as cyclic strain amplitude, cyclic loading frequency and drainage after the undrained cyclic loading on post-cyclic strength and stiffness is also presented. It is observed from test results that the post-cyclic undrained strength and stiffness of the specimen is greatly influenced by the cyclic loading condition and drainage after cyclic loading. It was noted that due to the multiple stages of cyclic loading followed by pore pressure dissipation, the induced apparent overconsolidation ratio is higher for staged cyclic loading than the continuous cyclic loading conditions. © 2017, Springer International Publishing Switzerland.

Geotechnical and Geological Engineering

Factors Affecting Post-cyclic Undrained Shear Strength of Marine Clay

Journal of Geotechnical and Geoenvironmental Engineering

Characterization of the Reduction in Undrained Shear Strength in Fine-Grained Soils due to Cyclic Loading

Post-liquefaction behavior of natural pumiceous sands

Evaluation of dynamic properties of sandy soil at high cyclic strains

Cyclic and postcyclic behaviour of silts and silty sands from the Indo Gangetic Plain

Journal	Data powered by TypesetSoil Dynamics and Earthquake Engineering
Publisher	Data powered by TypesetElsevier Ltd
ISSN	02677261
Open Access	No