Dr. Anil Kumar Sharma currently serves as Assistant Professor (SG) at the department of Civil Engineering, Amrita School of Engineering, Coimbatore campus. He successfully defended his PhD in Geotechnical Engineering in 2015 from Department of Civil Engineering, Indian Institute of Science, Bangalore, India.

Experience

YEAR AFFILIATION
February 5, 2015 – December 15, 2015 Assistant Professor, SOA University in Bhubaneswar

TECHNICAL SKILL ASSET 

  • FLAC, PLAXIS, MATLAB
     

Publications

Publication Type: Journal Article
Year of Conference Publication Type Title
2016 Journal Article A. Kumar Sharma and Sivapullaiah, P. V., “Ground granulated blast furnace slag amended fly ash as an expansive soil stabilizer”, Soils and Foundations, vol. 56, pp. 205 - 212, 2016.[Abstract]

The potential of using a binder for stabilization of expansive soils that consists of a mixture of fly ash and ground granulated blast furnace slag (GGBS) is evaluated in this study. The joint use of these two materials to form a binder provides new opportunities to enhance pozzolanic activities that may reduce the swell potential and increase the unconfined compressive strength of expansive clays. The influence of different percentages of binder on the Atterberg limits, compaction characteristics and unconfined compressive strength of an artificially-mixed soil were examined. The addition of binder was shown to bring about a significant improvement in these soil properties. It was found that the liquid limit and plasticity index of the expansive soil decreased considerably with the addition of binder, while the strength improved. Adding a small amount of lime (one percent) further improved the soil properties by enhancing the pozzolanic reactivity of the binder. Based on the results of the unconfined compressive strength tests, the addition of 20% binder is recommended as optimum content. In addition, the mineralogical and morphological studies of soil specimen stabilized with optimum binder content suggested the formation of hydrated particles and cementitious compounds as a result of the reaction between the clay and the binder. Test results indicate that the use of \{GGBS\} mixed fly ash as binder to stabilize expansive is well suited for sustainable construction besides economic benefits. More »»
2016 Journal Article A. Kumar Sharma and Sivapullaiah, P. V., “Strength development in fly ash and slag mixtures with lime”, Ground Improvement, ICE (UK). , vol. 169, no. 3, pp. 194-205, 2016.[Abstract]

The main objective of this paper is to investigate the effect of the joint activation of fly ash, a by-product of thermal power plants, and ground granulated blast-furnace slag, a by-product of steel manufacture, on the unconfined compressive strength of mixtures of the two materials. Laboratory compaction and strength tests were carried out on ash–slag mixtures at different proportions. The strength was found to increase with slag content. However, the specimens consisting of 30 and 40% of slag and cured for 28 d showed higher strength than the individual materials. Additionally, the effect of different percentages of lime on the strength of the fly ash–slag mixtures was investigated. Tremendous increase in strength was observed with the addition of even 2% of lime. Scanning electron microscopy and X-ray diffraction studies showed the morphological and mineralogical changes that are associated with strength improvement. This study suggests that properly designed combinations of fly ash–slag–lime can be used as construction materials for infrastructure projects such as structural fills or subgrade and sub-base courses in pavements without requiring large quantities of lime. More »»
2016 Journal Article A. Kumar Sharma and Sivapullaiah, P. V., “Swelling behaviour of expansive soil treated with fly ash–GGBS based binder”, 2016.[Abstract]

In this article, the potential of a binder developed by admixing fly ash and ground granulated blast furnace slag (GGBS) to stabilise expansive soils is evaluated. Laboratory tests included determination of free swell index, swell potential and swelling pressure tests of the soil/binder mixtures at different mixing ratio. The test results showed decrease in the swelling behaviour of the soil with increase in binder content. The percent swell–time relationship was observed to fit the hyperbolic curves enabling us to predict the ultimate percent swell from few initial test results. Addition of 1% of lime to the binder showed further improvement in reducing swelling. A good linear relationship is established between percent oedometer swell and modified free swell index (MFSI) for soil/binder mixtures without lime but the same has not been observed in the presence of lime. The compressibility characteristics of the soil/binder mixtures reduced nominally with increase in binder content but in the presence of lime, the compressibility reduced significantly. Binder used in this study has been found to be effective and economic to stabilise expansive soils with lesser amount of chemical additives such as lime. More »»
Publication Type: Conference Proceedings
Year of Conference Publication Type Title
2012 Conference Proceedings A. Kumar Sharma and Sivapullaiah, P. V., “Improvement of Strength of Expansive Soil with Waste Granulated Blast Furnace Slag”, GeoCongress 2012,March 25-29, 2012 Oakland, California. pp. 3920-3928, 2012.[Abstract]

Utilization of industrial waste materials in the improvement of problematic soils is a cost efficient and also environmental friendly method in the sense that it helps in reducing disposal problems caused by the various industrial wastes. The main objective of the present study is to improve various engineering properties of the soil by using waste material Ground Granulated Blast Furnace Slag (GGBS) as an alternative to lime or cement, so as to make it capable of taking more loads from the foundation structures. This paper reports the findings of laboratory tests carried out on local Indian expansive black cotton soil with GGBS mixed with the expansive soil in different proportions. The specimens compacted to their respective Proctor's optimum moisture content and dry density (which varied from mixture to mixture) were cured for a period of 7, 14 and 28 days and their unconfined compression strengths were determined. It is observed that the strength improvement depends on the amount of GGBS used and the effect of curing period is less pronounced. Further it was shown that the initial tangent modulus values generally increases with increase in GGBS content More »»

AWARDS/ACHIEVEMENTS/RECOGNITION

  • Paper in Ground Improvement journal has been selected for free preview and download in September 2016 as a part of the India Engineer’s day celebration by ICE (UK)
     
Faculty Details

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Faculty Email: 
ak_sharma@cb.amrita.edu