Papers by Er. Dr. Nilanjan Tarafder
Advances in intelligent systems and computing, Nov 28, 2019
This study examines the performance of Adaptive Neuro-Fuzzy Inference System (ANFIS) for estimati... more This study examines the performance of Adaptive Neuro-Fuzzy Inference System (ANFIS) for estimation of compressive strength of High-Performance Concrete (HPC) from given mix proportion. An ANFIS model merges advantages of both ANN and Fuzzy Logic. A total of 54 experimental datasets were used, where 36 datasets were used in training and 18 datasets were used for validating the model. Six input parameters include water binder ratio, age of testing, silica fumes, coarse and fine aggregate and superplasticizer, whereas compressive strength is the single output parameter. The experimental and obtained results were compared. The result illustrates that ANFIS model can be used as an alternative method to predict the compressive strength of high-performance concrete.
Materials Today: Proceedings, 2022
Lecture notes in civil engineering, Oct 4, 2022
Canadian Journal of Civil Engineering
The current article deals with an investigational study on the bridge's pier-bent cap assembl... more The current article deals with an investigational study on the bridge's pier-bent cap assemblies exposed to cyclic loading. In the study, four types of concrete are used—conventional reinforced concrete (CRC), fibre reinforced concrete (FRC), self-compacting concrete (SCC), and fibre reinforced self-compacting concrete (FRSCC)—to investigate the assemblies' behaviour using the concrete materials in the specified structural component. All the bridge element samples (8) are scaled down to one-twenty seventh for experimental purposes and correct performance results. The pier-bent cap subassemblies were exposed to cyclic loading tests to evaluate their crack generation pattern and resistive capability under seismic actions. The results are analysed as hysteresis behaviour, envelope pattern, stiffness behaviour, energy dissipation, and failure pattern. The study's findings are inspiring as the FRSCC outperformed the CRC in all the results along with ultimate strength, displac...
Advances in Intelligent Systems and Computing, 2018
This paper investigates the applicability of artificial neural network model for strength predict... more This paper investigates the applicability of artificial neural network model for strength prediction of fibers’ self-compacting concrete under compression. The available 99 experimental data samples of fibers self-compacting concrete were used in this research work. In this paper, computational-based research is carried for predicting the strength of concrete under compression and model was developed using ANN with five input nodes and feed-forward three-layer back-propagation neural networks with ten hidden nodes were examined using learning algorithm. ANN model proposed analytically was verified, and it gives more compatible results. Hence, the ANN model is proposed to predict the strength of fibrous self-compacting concrete under compression.
Herein, a box girder bridge, prepared using self-compacting concrete (SCC), is studied to underst... more Herein, a box girder bridge, prepared using self-compacting concrete (SCC), is studied to understand its behaviour during an earthquake. The bridge under consideration was constructed by PWD, Silchar with normal M40 grade concrete. The concrete type is ancient for the structure category at present and there is need for a new concrete material to be used which will improve the performance of bridges. In our present endeavour, practically used concrete was replaced with new SCC to examine the performance using pushover analysis. For this, a three dimensional finite element model was prepared and all the load combinations were evaluated including critical load case. For seismic investigation, pushover analysis was performed with respect to the Indian Standard response spectrum to examine the displacement pattern, base shear capacity and demand-capacity behaviour of the bridge piers in longitudinal and transverse direction. The results shows that performance of the bridge is enhanced in...
Fiber reinforced polymer (FRP) composites have become important materials for the new structures ... more Fiber reinforced polymer (FRP) composites have become important materials for the new structures and application of FRP is efficient in repairing and strengtheningconstructionswhich werearchitecturallyweak. For applications of structures, an overview of different FRP composites are provided by various polymer composites and in civil structures FRP composites are used for reinstatement or firming up the elemental constituent. Now a days various researches are going oninternationally regarding the use of FRP, wraps, laminates and sheets in the renovation and hardening concrete members.FRPis an alternate process to renovation of structures which is also economical. FRPis being usingeffectively in various cases like lessload, high strength and stability. The purpose of this paper is to discuss about different properties, types, applications of FRP. Some case studies & practical applications used in worldwide are also discussed in this paper.
Materials Today: Proceedings, 2021
Key Engineering Materials, 2019
Concrete is the most important building material in construction industry because of its revoluti... more Concrete is the most important building material in construction industry because of its revolutionary property of quick hardening and free from internal problems. Its use has a great effect on environment due to the large amount of natural resources and cement lime materials required for manufacture the concrete structures. Now it’s the time for think in the direction of Eco-friendly durable materials in concrete production. In the present work, Quarry Dust and Foundry Sand are partial replaced River Sand to develop Rheological and Durability properties of M40 grade of Eco-Efficient Self-Compacting Concrete (ESCC). The target strength could be achieved satisfying the rheological properties of Eco-Efficient Self-Compacting Concrete with fiber additions. In this study investigations carried to find the Permeability, Shrinkage, Acid attack and Rapid Chloride Permeability Test (RCPT) of Eco-Efficient Fiber based Self-Compacting Concrete and it is observed that it is no way inferior to ...
International Journal of Research in Engineering and Technology, 2015
The tall buildings are more flexible than the shorter buildings and they are sensitive to a diffe... more The tall buildings are more flexible than the shorter buildings and they are sensitive to a different frequency range in the earthquake excitation. The earthquake success of tall buildings is reinforced by studies using average properties of earthquake and typical properties of tall buildings and there are no special earthquake hazards that arise simply as a consequence of height. The purpose of this paper is to discuss about different analysis methods, base isolation and soil structure interaction. Analysis method is used for a large variety of tall building configurations comprising slabs, beams, columns, foundations, walls, etc. Base isolation is a collection of structural elements which should substantially separate a superstructure from its substructure resting on a shaking ground which protects the integrity of building or non-building structures. It is one of the most powerful equipment's of earthquake engineering which uses the passive structural vibration control technologies. Soil Structure Interaction is the process in which the response of the soil influences the motion of the structure and the motion of the structure influences the response of the soil. General goal of the Soil Structure Interaction analysis is to calculate seismic response of structure bases on seismic response of free field.
Effect of material uncertainty on the performance of bridge's pier-bent cap joints under cyclic loading, 2022
The current article deals with an investigational study on the bridge's pier-bent cap assemblies ... more The current article deals with an investigational study on the bridge's pier-bent cap assemblies exposed to cyclic loading. In the study, four types of concrete are used-conventional reinforced concrete (CRC), fibre reinforced concrete (FRC), selfcompacting concrete (SCC), and fibre reinforced self-compacting concrete (FRSCC)-to investigate the assemblies' behaviour using the concrete materials in the specified structural component. All the bridge element samples (8) are scaled down to onetwenty seventh for experimental purposes and correct performance results. The pier-bent cap subassemblies were exposed to cyclic loading tests to evaluate their crack generation pattern and resistive capability under seismic actions. The results are analysed as hysteresis behaviour, envelope pattern, stiffness behaviour, energy dissipation, and failure pattern. The study's findings are inspiring as the FRSCC outperformed the CRC in all the results along with ultimate strength, displacement ductility factor, and stiffness behaviour with 46%, 71%, and 74% improvements, respectively.
Lecture Notes in Civil Engineering, 2022
Lecture Notes in Civil Engineering, 2022
International Journal on Emerging Technologies, 2020
Herein, a box girder bridge, prepared using self-compacting concrete (SCC), is studied to underst... more Herein, a box girder bridge, prepared using self-compacting concrete (SCC), is studied to understand its behaviour during an earthquake. The bridge under consideration was constructed by PWD, Silchar with normal M40 grade concrete. The concrete type is ancient for the structure category at present and there is need for a new concrete material to be used which will improve the performance of bridges. In our present endeavour, practically used concrete was replaced with new SCC to examine the performance using pushover analysis. For this, a three dimensional finite element model was prepared and all the load combinations were evaluated including critical load case. For seismic investigation, pushover analysis was performed with respect to the Indian Standard response spectrum to examine the displacement pattern, base shear capacity and demand-capacity behaviour of the bridge piers in longitudinal and transverse direction. The results shows that performance of the bridge is enhanced in both the directions including 16 improved drift values and demand capacity ratio also found to be within the prescribed limit. The proposed new material, SCC, improved the performance of the bridge in both longitudinal and transverse directions.
Advances in Intelligent Systems and Computing, 2020
This study examines the performance of Adaptive Neuro-Fuzzy Inference System (ANFIS) for estimati... more This study examines the performance of Adaptive Neuro-Fuzzy Inference System (ANFIS) for estimation of compressive strength of High-Performance Concrete (HPC) from given mix proportion. An ANFIS model merges advantages of both ANN and Fuzzy Logic. A total of 54 experimental datasets were used, where 36 datasets were used in training and 18 datasets were used for validating the model. Six input parameters include water binder ratio, age of testing, silica fumes, coarse and fine aggregate and superplasticizer, whereas compressive strength is the single output parameter. The experimental and obtained results were compared. The result illustrates that ANFIS model can be used as an alternative method to predict the compressive strength of high-performance concrete.
Key Engineering Materials, 2019
Concrete is the most important building material in construction industry because of its revoluti... more Concrete is the most important building material in construction industry because of its revolutionary property of quick hardening and free from internal problems. Its use has a great effect on environment due to the large amount of natural resources and cement lime materials required for manufacture the concrete structures. Now it's the time for think in the direction of Eco-friendly durable materials in concrete production. In the present work, Quarry Dust and Foundry Sand are partial replaced River Sand to develop Rheological and Durability properties of M40 grade of Eco-Efficient Self Compacting Concrete (ESCC). The target strength could be achieved satisfying the rheological properties of Eco-Efficient Self Compacting Concrete with fiber additions. In this study investigations carried to find the Permeability, Shrinkage, Acid attack and Rapid Chloride Permeability Test (RCPT) of Eco-Efficient Fiber based Self Compacting Concrete and it is observed that it is no way inferior to the conventional concretes. From the experimentation, it is recommended that waste materials from different source are fitting to be used as fine materials in concrete. The construction cost reduces by utilising such waste as fine aggregate in place of aggregate from natural source for construction.
Advances in Intelligent Systems and Computing, 2019
This paper investigates the applicability of artificial neural network model for strength predict... more This paper investigates the applicability of artificial neural network model for strength prediction of fibers' self-compacting concrete under compression. The available 99 experimental data samples of fibers self-compacting concrete were used in this research work. In this paper, computational-based research is carried for predicting the strength of concrete under compression and model was developed using ANN with five input nodes and feed-forward three-layer back-propagation neural networks with ten hidden nodes were examined using learning algorithm. ANN model proposed analytically was verified, and it gives more compatible results. Hence, the ANN model is proposed to predict the strength of fibrous self-compacting concrete under compression.
AIP Conference Proceedings, 2018
A review was done on Magnesium (Mg) based composite materials reinforced with different nano part... more A review was done on Magnesium (Mg) based composite materials reinforced with different nano particles such as TiO2, Cu, Y2O3, SiC, ZrO2 and Al2O3. TiO2 and Al2O3 nanoparticles were synthesised by melt deposition process. Cu, Y2O3, SiC and ZrO2 nanoparticles were synthesised by powder metallurgy process. Composite microstructural characteristics shows that the nano-size reinforcements are uniformly distributed in the composite matrix and also minimum porosity with solid interfacial integrity. The mechanical properties showed yield strength improvement by 0.2 percentage and Ultimate tensile strength (UTS) was also improved for all the nano-particles. But UTS was adversely affected with TiO2 reinforcement while ductility was increased. With Cu reinforcement elastic modulus, hardness and fracture resistance increased and improved the coefficient of thermal expansion (CTE) of Mg based matrix. By Y2O3 reinforcement hardness, fracture resistance was improved and ductility reached maximum by 0.22 volume percentage of Y2O3 and decreased with succeeding increase in Y2O3 reinforcement. The readings exposed that mechanical properties were gathered from the composite comprising 2.0 weight percentage of Y2O3. Ductility and fracture resistance increased with ZrO2 reinforcement in Mg matrix. Using Al2O3 as reinforcement in Mg composite matrix hardness, elastic modulus and ductility was increased but porosity reduced with well interfacial integrity. Dissipation of energy in the form of damping capacity was resolved by classical vibration theory. The result showed that an increasing up to 0.4 volume percentage alumina content increases the damping capacity up to 34 percent. In another sample, addition of 2 weight percentage nano-Al2O3 particles showed big possibility in reducing CTE from 27.9-25.9×10 6 K 1 in Magnesium, tensile and yield strength amplified by 40MPa. In another test, Mg/1.1Al2O3 nanocomposite was manufactured by solidification process followed by hot extrusion. Results showed that strengthening effect was maintained up to 150 C and fracture characteristics of Mg composite transformed from brittle to mixed ductile mode and fully ductile in attendance of nano-Al2O3 particulates.
IOSR Journal of Mechanical and Civil Engineering, 2016
Fiber reinforced polymer (FRP) composites have become important materials for the new structures ... more Fiber reinforced polymer (FRP) composites have become important materials for the new structures and application of FRP is efficient in repairing and strengtheningconstructionswhich werearchitecturallyweak. For applications of structures, an overview of different FRP composites are provided by various polymer composites and in civil structures FRP composites are used for reinstatement or firming up the elemental constituent. Now a days various researches are going oninternationally regarding the use of FRP, wraps, laminates and sheets in the renovation and hardening concrete members.FRPis an alternate process to renovation of structures which is also economical. FRPis being usingeffectively in various cases like lessload, high strength and stability. The purpose of this paper is to discuss about different properties, types, applications of FRP. Some case studies & practical applications used in worldwide are also discussed in this paper.
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Papers by Er. Dr. Nilanjan Tarafder