Anant Parghi

@svnit.ac.in

Assistant Professor and Department of Civil Engineering
Sardar Vallabhbhai National Institute of Technology, Surat



                    

https://researchid.co/anantparghi
29

Scopus Publications

Scopus Publications




  • Automated corrosion detection using deep learning and computer vision
    Elham Nabizadeh and Anant Parghi
    Springer Science and Business Media LLC

  • Vision-based concrete crack detection using deep learning-based models
    Elham Nabizadeh and Anant Parghi
    Springer Science and Business Media LLC

  • Deep Learning-Based Concrete Crack Detection Using YOLO Architecture
    Elham Nabizadeh and Anant Parghi
    Springer Nature Switzerland


  • Low-grade glass fibre-reinforced polymer-confined circular RC columns under simulated seismic loads
    Md. Mosharef Hossain, Saif Aldabagh, Anant Parghi, and M. Shahria Alam
    Canadian Science Publishing
    Glass fibre-reinforced polymer (GFRP) with low tensile strength (hereafter referred to as low-grade GFRP) is a cost-effective alternative to other types of GFRPs with higher tensile strength. This paper investigates the prospect of retrofitting deficient and repairing damaged circular concrete columns with low-grade GFRP jackets. Two identical one-third scale models of a seismically deficient prototype bridge pier were constructed and tested under constant axial compression and quasi-static reversed cyclic loading. The first column was tested twice, first under “as-built” condition and second under repaired conditions. The second column was retrofitted prior to testing. The repaired and retrofitted columns were characterized with enhanced flexural, ductility, and energy dissipation capacities when compared to the deficient column, and were stable up to the maximum applied drift. Provisions of the Seismic Retrofitting Manual for Highway Structures were found to yield conservative estimates of the required thickness of the low-grade GFRP jacket.

  • Buckling Response Analysis of Laminated Plates Subjected to Localised Bi-axial In-plane Compressive Loading
    Achchhe Lal, Anant Parghi, Anil Kumar Mahto, and Rahul Kumar
    IOP Publishing
    Abstract Laminated composite plates are well known structural member since last four decades because of its high stiffness and strength to weight ratio. Usually this type of structural members is subjected to partial biaxial loading during their functioning. For better safety and stability of structure, analysis of these structural member in that condition of loading is necessary. In this present analysis buckling response of laminated composite plates under biaxial partial in-plane loading is examined and effect of various parameters like aspect ratio, stacking sequence, fiber orientation and plate thickness ratio of nondimensionalised critical buckling load (NCBL) are revealed. A MATLAB program is developed higher order shear deformation theory based on finite element method for buckling analysis of laminated composite plate. Efficiency of the program is checked by comparing the result of the present work with that of already published which shows good favour of later one.

  • Performance Evaluation of Bridge Piers Reinforced with Shape Memory Alloys in Plastic Hinge Region: Part 1-Statistical Analysis
    Kanan Thakkar and Anant Parghi
    IOP Publishing
    Abstract Bridge piers are the most perilous structural elements under the effect of enormous earthquake ground motions. The large residual deformation of a bridge pier turns out into the failure of an entire bridge structure. Thus, in the last decades, numerous novel materials were developed to reduce the residual displacement after the post-earthquake events. Shape Memory Alloys (SMA) is a special class of composite material, which can sustain enormous deformations and reappears to its parent state. The numerical results of SMA-reinforced bridge piers using non-linear finite element tools are compared with the experimental results. Two methods of statistical analysis are adopted for this study: One-Factor-at-a-Time (OFAT) Method, and Full-Factorial Design Method. Three variable material parameters, such as the compressive strength of concrete, the yield strength of steel, and the type of SMA composition are considered. Three levels for each factor are considered. The results of this research are presented in terms of drift values at various performance criteria, i.e., cracking, spalling, yielding, and crushing. Further, the regression analysis is performed to determine the relationship between material properties of SMA-reinforced bridge piers and the drift values at various performance criteria.

  • Seismic Assessment of Concrete Column Reinforced with Fiber Reinforced Polymer and Stainless Steel Rebars
    Bhairav Thakur, Rahul Pardeshi, Mayank Patel, and Anant Parghi
    IOP Publishing
    Abstract The fiber reinforced polymer (FRP) rebar is utilized as a corrosion resistive reinforcement in the structural elements like a beam, column, and slab. The FRP rebar offers excellent mechanical and durability properties, like high strength to weight ratio, high stiffness, and corrosion resistance to structures. However, a lower ductility subjected to linear-elastic behaviour, and the brittle nature of FRP particularly in the case of column applications is getting attention among researchers. Whereas stainless steel (SS) having adequate ductility, low maintenance, and resistance to corrosion make it an ideal material for reinforcing applications. To improve the performance of FRP-reinforced elements and diminish the brittle behaviour, the present research is focused on the utilization of SS rebar in the plastic hinge region of the column along with FRP rebar in rest portion of a column. This hybrid configuration is adopted here to improve the ductility and corrosion resistance capacity of the RC column. The damage concentration of the hybrid column is analysed under the effect of nonlinear static loads. The parametric analysis is performed over the hybrid column to study the behaviour of different factors under pushover loading. The results indicate that the ductility of the SS-FRP RC column is achieved under seismic loads. The study reveals that axial load, the yield strength of steel and aspect ratio significantly affect the behaviour of the SS-FRP RC column.

  • Performance Evaluation of Bridge Piers Reinforced with Shape Memory Alloys in Plastic Hinge Region: Part 2-Optimization
    Kanan Thakkar and Anant Parghi
    IOP Publishing
    Abstract Shape Memory Alloy (SMA) rebars are emerging as a potential solution to mitigate the permanent/residual deformation of bridge piers in recent decades. The maximum damage of a bridge pier being concentrated in the plastic hinge region and SMA being the expensive material to be utilized in the large-scale structural elements, the bridge piers are reinforced with SMA in the plastic hinge regions only. The bridge piers are modeled with a non-linear finite element tool. Three variable material parameters are adopted for this study, such as the compressive strength of concrete, the yield strength of steel, and the type of SMA composition. The bridge pier models considering One-Factor-at-a-Time (OFAT) Method, and Full Factorial Design Method in the previous study (Part 1) are considered. In this paper, the results of full factorial design of the previous research are optimized using optimization techniques in order to determine the best suitable combination of these three material properties. The performance of SMA-reinforced bridge piers is evaluated based on the drift values at various performance criteria, i.e., cracking, spalling, yielding, and crushing. The results are presented in terms of the rank-wise significance for each possible combination of the considered material properties of bridge piers.

  • Seismic investigation of longitudinally aligned shape memory alloy-stainless steel reinforced concrete column
    Rahul Pardeshi, Bhairav Thakur, and Anant Parghi
    IOP Publishing
    Abstract Shape memory alloy (SMA) is a smart material sustain (8∼13%) an enormous amount of strain and having an ability to regain parental shape after the removal of an external load and temperature due to its pseudo-elastic (SE) and shape memory effect (SME) properties. The SE and SME properties, lower modulus of elasticity, and higher elastic straining of SMA compared to conventional steel reinforcement makes it predictable for the design of the reinforced concrete (RC) structure. The present research is focused on the seismic investigation of RC columns reinforced with SMA rebar in the plastic hinge region along with stainless steel (SS) in the remaining portion of the column. A nonlinear static pushover seismic analysis is used for the numerical investigation of SMA-SS RC column. The numerical model is validated having 98% accuracy with existing literature results. The impact of various parameters on SMA-SS RC column is evaluated for SMA in the plastic hinge region. The results reveal that an aspect ratio, the yield strength of reinforcement, the compressive strength of concrete and axial load are significantly affecting the lateral strength and the ductility of the column under seismic loading.

  • Buckling analysis of laminated composite plate due to localised in plane loading
    Achchhe Lal, Anant Parghi, Anil Kumar Mahto, and Rahul Kumar
    IOP Publishing
    Abstract Laminated composite plates are inevitable parts of structure due to its superior properties than that of conventional material. Many times, these structural elements are subjected to the partial loadings during various applications which arises buckling in the elements. This necessitates proper analysis of these types of structural member for better safety and stability. In the present paper buckling analysis of laminated composite stiffened plate under in-plane localized edge loading is presented. Buckling load for various cases of partial edge loading are investigated for different fiber orientations and loading extent. Finite element method-based MATLAB program is developed for the present analysis. Validation study is done, which shows well agreement with the results already published.

  • Review of Strengthened FRP-confined RC column with various aspect ratios under axial load and high-temperature
    Mayank Patel, Rahul Pardeshi, Bhairav Thakur, and Anant Parghi
    IOP Publishing
    Abstract In civil and structural engineering, building structures with vigorous stability and strength utilizing economical materials is challenging. Stability of structures during their lifespan is a very demanding endeavor in civil engineering systems. Recent trends are highly focused on high strength materials, strong corrosion-resistance in structural elements, slender structure development, broad span provision, and load reduction. in order to achieve these conditions, composite materials have proved to be a successful aspirant. The fiber-reinforced polymer (FRP) possesses novel properties that encourage the researchers to strengthen or restore the structural degradation of the reinforced concrete (RC) columns via confinement. The present study highlighting the different aspects of (FRP) confined (RC) column having different aspect ratios, the axial load, and the high temperature under extensive literature review. The FRP confinement is much more effective in the case of circular columns than sharp-edged rectangular columns. The variation of the cross-sectional aspect ratio (section depth to width ratios) of RC columns plays a vital role in the evaluation of the efficiency of strengthening techniques. In spite of the clear and proven advantages of utilizing FRPs over conventional materials, awareness of the behavior of such composite materials after exposure to high temperature is noticeable and requires more research.

  • Seismic Performance of Bridge Piers Reinforced with Shape Memory Alloys in Plastic Hinge Region
    Kanan Thakkar and Anant Parghi
    IOP Publishing
    Abstract The recent earthquake reconnaissance reports revealed that a large residual displacement had led to the devastation of bridge piers due to serviceability concerns. Shape Memory Alloys (SMA) is the distinctive category of smart materials, which can sustain enormous deformations and reappear to a parent shape after removal of loading or by removal of heat. Replacing the typical steel reinforcement with SMA reinforcement in the potential plastic hinge regions of bridge piers could reduce the residual displacement of a pier. This study is focused on the numerical investigation of circular bridge piers with SMA-based reinforcement in the plastic hinge regions to mitigate the residual displacement. The numerical model of a bridge pier is validated using the experimental results of SMA-reinforced bridge pier. Dynamic time history analyses are performed to compare the performance of SMA-reinforced bridge piers with steel-reinforced bridge piers under the effect of various earthquake ground motions. The results are represented in terms of displacement, base shear, and ductility. Moreover, the influence of several parameters on the performance of bridge piers is investigated, i.e., aspect ratio, axial load ratio, and compositions of SMA. The numerical results have indicated the effectiveness of bridge piers reinforced with SMA by reducing the residual displacement after major earthquake events.

  • Post-buckling nonlinear analysis of sandwich laminated composite plate
    Achchhe Lal, Anant Parghi, and Kanif Markad
    Elsevier BV




  • Seismic collapse safety of RC circular bridge pier retrofitted with fibre reinforced polymer


  • Physical and mechanical properties of mortars containing incinerated sludge ash and silica fume




  • Effects of curing regimes on the mechanical properties and durability of polymer-modified mortars – an experimental investigation
    Anant Parghi and M. Shahria Alam
    Informa UK Limited
    The present research investigates the polymer/cement (P/C) ratios (0, 5, 10, 15, and 20%) on mechanical and durability properties of modified mortar exposed to different curing conditions. These properties include compressive and flexural strengths, flow spread test, water absorption, density, coefficient of water absorption, sorptivity, and salt/sulfate resistance tests. The results show that combining seven days of water submergence and 21 days of ambient temperature curing (7W21D) along with 15% polymer content is more helpful to improve the mortar properties compared to other mix proportions and curing conditions. Interestingly, the same combination resulted in a better performance in terms of water absorption, the coefficient of water absorption, sorptivity, toughness and salt/sulfate resistance as compared to polymer-modified mortars (PMMs) containing 0, 5, 10, and 20% polymer.