Qualification: 
M.Tech, B-Tech
v_poornima@cb.amrita.edu

Poornima V. currently serves as Assistant Professor at the department of Civil Engineering, Amrita School of Engineering, Coimbatore. She is currently pursuing her Ph. D. in Structural Engineering from Anna University, Chennai.

Experience

Year Affiliation
June 2015 – Present Assistant Professor, Civil Engineering, Amrita School of Engineering, Coimbatore
July 2011 – June 2015 Assistant Professor, Sri Krishna College of Technology, Coimbatore

Awards / Achievements / Recognition

  • University Rank Holder during M.E.,Structural Engineering (Anna University,Coimbatore)
  • Board of Studies Member in Sri Krishna College of Engineering and Technology
     

Publications

Publication Type: Conference Paper

Year of Publication Title

2018

S. Mohammed and Poornima V., “Strength and durability study of sulphur concrete with replaced fine aggregate”, in Materials Today: Proceedings, 2018, vol. 5, pp. 23888-23897.[Abstract]


Increase in the technologies and concern about the environmental issues in the present world has led to the requirement of a new construction material which does less harm to the environment and also utilizes the available waste material. Sulphur concrete is type of concrete where cement and water is not used instead melted sulphur which act as binding agent is used to bind the fine and coarse aggregate and the filler material like fly ash together to form a hard concrete. There for study on varies properties of sulphur concrete is very much essential to relate it with normal cement concrete. In this paper various mechanical and durability of sulphur concrete is done. Along with determining a sulphur concrete mix, sulphur concrete with different fine aggregate like beach sand, eco sand and manufactured sand replacing river sand in 0%, 25%, 50%, 75% and 100% is also studied. Durability of sulphur concrete of each type fine aggregate with best compressive strength is also studied. Water absorption, resistance to different chemical environments and rapid chloride ion penetration test is done to determine the superiority of sulphur concrete over cement concrete. Result shows that sulphur concrete can be used in areas subjected to heavy moisture content, where acid activities are more. Strength wise SC give similar result to normal concrete. Another advantage of sulphur concrete is that any type of fine aggregate can be used as filler in SC since it is a water repellent type concrete. © 2018 Elsevier Ltd.

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2018

M. G. Giriselvam, Poornima V., Venkatasubramani, R., and Sreevidya, V., “Enhancement of crack healing efficiency and performance of SAP in biocrete”, in IOP Conference Series: Materials Science and Engineering, 2018, vol. 310.[Abstract]


Concrete usage in Construction becomes more common in this speedy world. Despite its benefits, concrete often exhibits crack which appear due to stresses. Larger cracks cause Structural integrity problems and smaller cracks may result in durability issues. A novel environmental friendly strategy to restore or remediate cracks formed in the structures is bio-mineralization of calcium carbonate using microbes such as Bacillus Subtilis (used in this study), as manual repair and maintenance is costly. In this Paper, an idea of using Super Absorbent Polymer in Bacterial Concrete was analysed which increases the strength and durability properties of concrete and also which acts as a protection to bacteria, where Self-Healing nature is viewed. In the span of 90 days, the results of Bacterial concrete cured under normal water providing nutrients inside with SAP shows healing up to 74 % and without SAP displays 49 % and when it is cured under nutrient medium, Bacterial Concrete having SAP displays healing up to 66 %, whereas without SAP it displays 57.4% of healing. During the observation it is discernible that the crack width ranging from 0.10 mm near 0.45 mm show better self-healing capacity. XRD analysis displays the presence of Calcium carbonate precipitation in cracks. © Published under licence by IOP Publishing Ltd.

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Publication Type: Journal Article

Year of Publication Title

2017

K. Suganya and Poornima V., “Study on absorbency of superabsorbent polymer in water and cement pore fluid and its incorporation in cement mortar”, International Journal of Civil Engineering and Technology, vol. 8, pp. 1131-1140, 2017.[Abstract]


Superabsorbent polymers (SAP) were studied here as an internal curing agent in mitigating drying shrinkage of high strength concrete or mortar. Cement pastes and mortars with water to cement ratio 0.26 were studied by incorporating with and without SAP. The absorption potential of SAP was determined by tea bag test in both pore fluid and water. Using this absorption capacity the amount of SAP added to the concrete was calculated. Keeping SAP and extra water amount stable, the Superplasticizer dosage was adjusted to obtain the essential workability. In order to improve the mechanical properties silica fume was added by various percentages of cement (0%, 10%, 15%, 20 %). Moreover internal curing could effectively reduce the drying shrinkage. When compared to conventional curing concrete drying shrinkage was found to be less in internal curing mortars.

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2017

P. R. K. Soda, Poornima V., Rameshkumar, V., and Venkatasubramani, R., “Influence of ureolytic bacteria in improving performance characteristics of concrete”, Ecology, Environment and Conservation, vol. 23, pp. S57-S63, 2017.[Abstract]


A distinctive strength and durability associated phenomenon in numerous concrete structures are subtle cracks and pores in the concrete. Principally, related cracks and pores result in increasing permeability of cement concrete matrix. Entry of water, atmospheric pollutants and their byproducts can deteriorate the matrix and diminish the strength and durability apparently. Also, it causes corrosion of the installed reinforcement which in turn, enhances the maintenance cost. Previous research works have dealt with conventional repair methods like epoxy injection, latex treatment and provision of further steel in design to limit the crack width within permissible limit. On the other hand, bioconcrete is reliable in enhancing the strength, durability and healing of cracks. In this research the bacterial strain, Bacillus licheniformis MTCC 3606, derived from soil is used for calcite precipitation and for achieving better strength and durability properties in hardened concrete. Also, the bacteria was checked for compatibility with different type of superplasticizers. It is inferred from the test results that the compressive and flexural strength got increased significantly. It increased the resistance to acid attack and water absorption in concrete appreciably. SEM analysis has shown the calcite precipitation inside the bacterial concrete. The results obtained from SEM analysis were confirmed by XRD.

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2015

A. Edison A. James, Poornima V., and .Venkatasubramani, R., “Influence of Bacteria on Strength and Self-Healing Characteristics of Fly Ash Concrete”, International Journal of Applied Engineering Research, vol. 10, no. 19, pp. 13929-13933, 2015.

2015

D. Gowtham, Poornima V., and Venkatasubramani, R., “Effect of Bacillus Subtilis on Biocrete Using Silica Fume”, International Journal of Applied Engineering Research, vol. 10, pp. 14021-14025, 2015.

2015

B. .Vignesh, Poornima V., and .Venkatasubramani, R., “A Study On Microbial Concrete By Using Quarry Dust As Partial Replacement Of Fine Aggregate”, International Journal of Applied Engineering Research, vol. 10, pp. 14011-14015, 2015.

2015

S. Varatharajan, Maruthachalam, D., and Poornima V., “Influence of Fibres on Robustness Characteristics of Self-Curing Concrete”, International Journal of Ecology, Environment and Conservation, vol. 21, no. 1, pp. 357-362, 2015.[Abstract]


Today water is the most required substance in this era. In generally Curing of concrete is maintaining moisture in the concrete during early ages specifically within 28 days of placing concrete, to develop desired properties. Internal water curing can be used to mitigate self-desiccation and self-desiccation shrinkage. This investigation focuses on the Self-Curing Concrete which doesn’t need any necessity of water. The Super absorbent Polymer is used as the curing agent. The percentage of curing agent is 0.3 from the cementations material. The grade of concrete is M40 It was found that SAP could help in self-curing by giving strength on par with conventional curing. The Super Absorbent Polymer is used as the curing agent. The percentage of curing agent is 0.3% by weight of cementanious material. Polypropylene Fibre of 0.1%, 0.2%, 0.3% and 0.5% by volume fraction was added and it is compared with the conventional mix. The effect of variation in strength parameters such as Compressive Strength, Splitting Tensile Strength and Modulus of rupture were studied for different dosage of fibre/self-curing agent and compared with that of cured concrete. Also, the durability study for Self cuing concrete after 28, 56 and 90 days curing was done by conducting the tests such as saturated water absorption, porosity, carbonation depth. More »»

Innovation in Teaching and Learning

  • 15CVL386: Estimation and Valuation Practice
    • Students were asked to do the presentation on estimation of real time project to understand the concepts more precisely.
    • An introductory talk regarding the software ESTIMA was given by industry people to understand the application of software in the subject.
      Their presentations were evaluated and suggestions were given to improve their estimation skill