Qualification: 
Ph.D, B-Tech
ak_sharma@cb.amrita.edu

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

2017

Journal Article

Va Sahu, Srivastava, Aa, Misra, A. Ka, and Dr. Anil Kumar Sharma, “Stabilization of fly ash and lime sludge composites: Assessment of its performance as base course material”, Archives of Civil and Mechanical Engineering, vol. 17, pp. 475-485, 2017.[Abstract]


In the present study, two potential industrial waste materials, such as, fly ash (FA) and lime sludge (LS) that are generated in bulk quantities and poses environmental hazards were mixed and stabilized using lime (CL) and gypsum (G) in order to make them suitable for use in Civil Engineering construction applications. Different mix proportion of FA and LS stabilized with different % of CL and G were studied and tested for unconfined compressive strength (UCS), split tensile strength test (STS) and California bearing ratio (CBR) to check the suitability of prepared composite for construction industries. It is noted that the optimal composition consisted of FA and LS in 1:1 ratio, 12% CL and 1% G content. The composite was also found to be durable with no leaching of heavy metals. Further, the selected composite was further studied for the microstructural development through scanning electron microscopy (SEM) and X-ray diffraction (XRD) to understand the phenomenon of chemical process or reaction and reason for strength gain. The developed composite (50FA + 50LS + 12CL + 1G) is suggested for application as base course layer material in flexible pavements due to its good requisite strength and durability. It is further highlighted that issues of uncertainty in strength and stiffness characteristics of pavement layer materials and its implications on analysis and design of flexible pavements can be studied through reliability based approach in combination with numerical analysis and Monte Carlo simulations. © 2016 Politechnika Wrocławska

More »»

2017

Journal Article

V. Sahu, Srivastava, A., Misra, A. K., and Dr. Anil Kumar Sharma, “Synthesis and characterization of green composites: Focus on accelerated strength, ductility and durability”, Indoor and Built Environment, pp. 1-15, 2017.[Abstract]


High strength green composite material has been developed by this project by addition of lime sludge in stabilized class F fly ash with commercial lime and gypsum. The green composite material was shown to have high UCS (unconfined compressive strength) and good California Bearing Ratio (CBR) values to provide sufficient factor of safety as required by the standard code of practice for use in road construction. The good strength is attributed to calcium carbonate in lime sludge, which reacts with pozzolanic products of lime–gypsum stabilized fly ash. X-ray diffraction and scanning electron microscopy have illustrated the interaction/reaction between lime sludge and fly ash and development of additional calcium aluminium oxide carbonate hydrate that has improved the strength of the green composite. The addition of 0.1%, 0.2% and 0.3% (by weight) of short polypropylene (PP) fibre (30 mm size) in the mix has imparted ductility to reduce brittle behaviour. The UCS of 8.1 MPa was achieved with 0.3% fibre in the mix, which is well above the standard requirement. Moreover, durability tests were performed to determine long-term performance. Our overall findings have indicated that the new green composite developed would have good strength, ductility and durability, for construction of flexible pavements. Further research is needed on the long-term field performance for at least one monsoon period before the material can be used with confidence. More »»

2017

Journal Article

N. Dave, Misra, A. Kumar, Srivastava, A., Dr. Anil Kumar Sharma, and Kaushik, S. Kumar, “Study on quaternary concrete micro-structure, strength, durability considering the influence of multi-factors”, Construction and Building Materials, vol. 139, pp. 447 - 457, 2017.[Abstract]


Experimental study on the effect of mechanical behavior of quaternary binders, prepared using various supplementary cementitious materials was performed. Fly ash (FA), Ground Granulated Blast furnace Slag (GGBS), Metakaolin (MK) and Silica Fume (SF) were blended in pre-determines proportions by replacing 30–50% of Ordinary Portland Cement (OPC) by weight. The water/binder ratio and total cementitious materials for pre-decided \{M40\} grade quaternary mix were kept constant for all mixes at 0.40 and 440 kg/m3, respectively. Tests were carried out to characterize the mechanical behavior of quaternary blended concretes at 7, 28, 56, 90, 180 and 365 days and results obtained were compared with the corresponding values obtained for controlled concrete (100% OPC) as well as binary mixes (70% OPC:30% \{FA\} and 50% OPC: 50% FA). The entire specimen were prepared, cured and tested as per the Indian standard code of practice. In addition to that durability of the quaternary mix was determined via Rapid Chloride Permeability Test (RCPT) and sulfate attack test. The synergistic action of the cement with the addition of supplementary cementitious materials has a positive effect vis-a-vis the durability and in few combinations of mixes strength of the concrete with quaternary binders was found better than that of the controlled and binary mix concrete. Based on the test results, optimum mixes of FA, \{SF\} and GGBS/MK as partial replacement to the \{OPC\} as quaternary binder would be a better option compare to 100% controlled concrete. More »»

2016

Journal Article

Dr. Anil 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

Dr. Anil 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

Dr. Anil 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

2016

Conference Proceedings

P. V. Sivapullaiah and Dr. Anil Kumar Sharma, “Fly Ash and GGBS Mixtures for Geotechnical and Geo-Environmental Applications”, Geo-Chicago 2016. Chicago, Illinois, pp. 121-130, 2016.[Abstract]


In this study, the joint activation of fly ash/ground granulated blast furnace slag (GGBS) mixtures has been evaluated in order to find its suitability in geotechnical and geo-environmental applications. Unconfined compressive strength (UCS) tests have been conducted on fly ash/GGBS mixtures prepared at their respective optimum moisture content (OMC) and maximum dry density (MDD) and cured for different periods. The mixture consisting of 70% fly ash and 30% GGBS developed better strength than either of the individual materials. Thereafter, 70:30 mix of fly ash and GGBS was selected for use as binder material for the stabilization of contaminated and expansive soils. With a view to stabilize contaminated soil, the adsorption characteristic of lead ions onto the mixture was determined through batch tests conducted at different pH and time intervals. It was found that the removal efficiency of the lead ions by the binder was comparatively high when compared to fly ash alone. The kinetic studies suggested that the reaction involving the adsorption of lead ions followed second-order kinetics. In the stabilization of expansive soil, the results demonstrated improvement in the plasticity characteristics of the expansive soil as well as reduction in the swell potential. Based on the results obtained in this present study, it can be concluded that combined use fly ash and GGBS can be advantageous when compared to using them individually. More »»

2016

Conference Proceedings

S. Raju, Dr. Sreevalsa Kolathayar, and Dr. Anil Kumar Sharma, “Modification of Subgrade Properties using Waste Generated from Sand Manufacturing Unit and Fiber”, International Conference on Soil and Environment ICSE 2016. Bangalore, India, 2016.

2016

Conference Proceedings

Dr. Anil Kumar Sharma and Sivapullaiah, P. V., “Compressibility and deformation studies of compacted fly ash/GGBS mixtures”, The 17th Nordic Geotechnical Meeting. Reykjavik, Iceland, pp. 897-903, 2016.

2012

Conference Proceedings

Dr. Anil 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)
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