Abstract One-third area of India's and major part of Gujarat are covered with expansive soil ... more Abstract One-third area of India's and major part of Gujarat are covered with expansive soil having high clay content s . These soils are problematic to geotechnical engineers as it causes damage to the structure founded on them. Soil swells when they imbibe water and shrink in their volume on drying. Swelling phenomena is one of the top-most challenge faced by the foundation engineer, due to the potential danger of unpredictable movements of structures founded on such types of soils. Various innovative methods have been used to counteract the volume change problem and to safeguard the structures. The use of nano chemical to reduce swelling potential of an expansive soil is a one of the developing research areas in geotechnical engineering. In this experimental work, an attempt is made to modify the swelling potential of expansive soil by using Terrenoseal (organo silane based nano chemical). The effects of adding these chemical s on soil is characterized by various geotechnical laboratory tests such as free swell index, consistency limits, compaction characteristics, swell pressure and unconfined compression test. Further, to study the physico- chemical properties using various analytical techniques such as Fourier Transformation Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), Particle size analysis, wettability, etc. are performed in the laboratory. The laboratory results indicated that use of nano chemical reduced the swelling potential, shrinkage, free swell index and also increases unconfined compression strength and the maximum dry density. Analytical techniques show improvement in physico-chemical properties of the soil. pH and COD tests for treated and untreated were also performed and the results were within the permissible limits.
Journal of Engineering Education Transformations, Jan 31, 2021
The conventional classroom methods of instruction in engineering education have been transformed ... more The conventional classroom methods of instruction in engineering education have been transformed into online lectures or remote teaching in recent months. This sudden transformation of pedagogy has largely influenced the cognitive ability of the students including emotional and psychological attributes. Therefore it has become necessary to understand the students' reflections on this pedagogical transformation towards making remote teaching more learner-centric. The present study manifests the emotional and psychological challenges experienced by the students during online learning. An anonymous online survey has been conducted to collect actual data. The survey has been conducted for all the students from 3,5, and 7 semesters at the Department of Civil Engineering degree course offered by the Marwadi University, Rajkot, Gujarat, India to obtain the differences or similarities in the responses towards the questionnaire. The responses of 111 students have been collected. The online survey form has been designed to offer 19 questions on emotional, psychological aspects, and creative suggestions. The Chisquare method and standard deviation have been utilized for the analysis and interpretation of the data and to observe the degrees of differences or similarities in the reflections. The trends of suggestions on the specific situations are also analyzed by the Chi-square method and the standard deviation. The Chi-square analysis revealed that irrespective of the level of maturities, gender, semesters, and styles of learning, the responses are similar towards the questions related to the likes and dislikes of the remote teaching and largely owing to the sudden change in the conventional pedagogy, the students are not fully comfortable. On the other hand, a trend of similar suggestions to improvise the pedagogy of remote teaching has been observed.
This paper presents experimental results of advanced investigation carried out on the beams reinf... more This paper presents experimental results of advanced investigation carried out on the beams reinforced with Glass Fiber Reinforced Polymer (GFRP) rebar and stirrups. Twelve beams reinforced with GFRP and one beam with steel reinforcement of size 230
International Journal of Advance Engineering and Research Development, 2017
Fiber reinforced polymer (FRP) as an external reinforcement is used extensively to enhance the st... more Fiber reinforced polymer (FRP) as an external reinforcement is used extensively to enhance the strength requirement related to flexure and shear in structural systems. But the strengthening of members subjected to torsion is yet to be explored as Torsion failure is a brittle form of failure. In present study experimental and analytical study on torsional strengthening of RC beam with GFRP lamentation. Total six rectangular beams of size 180*230 and length 1500 mm are casted. Out of six beam one beam as control beam and remaining five beams are GFRP wrapped beam at different configuration. Numerical work was carried out using non-linear finite element (FE). Keywords— GFRP laminates, Torsional Strengthening.
The maintenance, rehabilitation and upgrading of structural members is perhaps one of the most cr... more The maintenance, rehabilitation and upgrading of structural members is perhaps one of the most crucial problems in civil engineering applications. This research study presents to Study the Effect of Different Strengthening Patterns Using GFRP (Glass Fibre Reinforced Polymer) on Shear Capacity of the Beam. Totally twelve rectangular beams having 700 mm x 150 mm x 150mm were casted. The variables considered includes three different grades of concrete i.e. M20, M30, M 40 and three different strengthening schemes were adopted (i.e. U shape vertical strip wrap "UVS", U-wrap-"U", Vertical strip at 50˚ "VS 50˚"). Shear test, using simple beam with two-point loading was adopted in UTM testing Machine to study for the performance of GFRP wrapped beams in terms of increase in shear capacity and deflection and it was compared with the blank beams. The test results show that the beams strengthened with GFRP laminates exhibit better performance. The shear strength is increased by applying different pattern of GFRP strengthening scheme. The ultimate shear strength is increased by 35%, 34% and 11% in U-shape wrapping beam in M20, M30 and M40 respectively.
The objective of Earthquake Engineering is to design a structure in such manner so that the damag... more The objective of Earthquake Engineering is to design a structure in such manner so that the damage of structure or structural member during earthquake is minimized. The paper aims the review on the different methods for the seismic analysis of the Elevated Storage Reservoir (ESR) as it may be dynamic or static and it can be linear or nonlinear in terms of geometry or material. Response spectrum and time history are dynamic analysis whereas seismic coefficient and pushover analysis are the static seismic analysis methods. This paper is attempted to understand the basic fundamental of the static pushover analysis with respect to other methods and the review of differential studies of seismic analysis available in the literature on seismic analysis of ESR.
International Journal of Advance Engineering and Research Development, 2017
Now a day, corrosion is the governing factor in the deterioration of the structure in the saline ... more Now a day, corrosion is the governing factor in the deterioration of the structure in the saline and cold environment. To overcome this problem FRP reinforcement is extensively used in construction industries. The objective of this study is to asses the behavior of the FRP reinforced structures in the serviceability limit state design both for shear and flexure. Moreover deflection control is also considered.
International Journal of Research in Engineering and Technology, 2015
Development of civil engineering is intimately connected to innovation in structural material. To... more Development of civil engineering is intimately connected to innovation in structural material. To full fill the requirement of advance infrastructure in India, modern technologies and innovative materials has started to makes its way. Structures with bar corrosion and other distresses requires repair, rehabilitation and retrofits for increase strength, durability and much more life span. Fiber reinforce plastic (FRP) reinforcements provides solution for such work due to its non-corrosive and non-magnetic nature also high strength and low weight ratio. Now a day FRP materials are used for internal reinforcement for RC structures worldwide.
Abstract One-third area of India's and major part of Gujarat are covered with expansive soil ... more Abstract One-third area of India's and major part of Gujarat are covered with expansive soil having high clay content s . These soils are problematic to geotechnical engineers as it causes damage to the structure founded on them. Soil swells when they imbibe water and shrink in their volume on drying. Swelling phenomena is one of the top-most challenge faced by the foundation engineer, due to the potential danger of unpredictable movements of structures founded on such types of soils. Various innovative methods have been used to counteract the volume change problem and to safeguard the structures. The use of nano chemical to reduce swelling potential of an expansive soil is a one of the developing research areas in geotechnical engineering. In this experimental work, an attempt is made to modify the swelling potential of expansive soil by using Terrenoseal (organo silane based nano chemical). The effects of adding these chemical s on soil is characterized by various geotechnical laboratory tests such as free swell index, consistency limits, compaction characteristics, swell pressure and unconfined compression test. Further, to study the physico- chemical properties using various analytical techniques such as Fourier Transformation Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), Particle size analysis, wettability, etc. are performed in the laboratory. The laboratory results indicated that use of nano chemical reduced the swelling potential, shrinkage, free swell index and also increases unconfined compression strength and the maximum dry density. Analytical techniques show improvement in physico-chemical properties of the soil. pH and COD tests for treated and untreated were also performed and the results were within the permissible limits.
Many concrete structures are getting weakened or collapsed due to corrosion of steel reinforcemen... more Many concrete structures are getting weakened or collapsed due to corrosion of steel reinforcement in structures and other factors. Rehabilitation and strengthening of concrete structures with FRP (Fibre Reinforced Polymers) has been a useful technique since last few years. FRP sheets or plates are very suitable for strengthening not only because of their strength, but also due to the simplicity in the application. In this review paper, different strengthening techniques using FRP and other materials are reviewed. It can be concluded from the literature review that FRP is one of the efficient option for strengthening in either of the case like increasing the load carrying capacity of structures or to restore the original capacity of the structure after distress due to any means.
International Journal of Research in Engineering and Technology, 2014
This paper presents the nonlinear Finite Element Analysis (FEA) that has been carried out to simu... more This paper presents the nonlinear Finite Element Analysis (FEA) that has been carried out to simulate the behaviour of failure modes of Reinforced Concrete (RC) beams strengthened in flexure by Fibre Reinforced Polymer (FRP) laminates. Two beams were modeled in FEM software using ANSYS. In those two beams, one beam is control beam without FRP and other beam is Glass Fibre Reinforced Polymer (GFRP) strengthened beams. From the analyses the load deflection relationships, crack pattern, first crack load and Ultimate load was obtained and compared with the experimental results available in Literature. The load deflection plots obtained from numerical studies show good agreement with the experimental plots. There was a difference in behaviour between the RC beams strengthened with and without GFRP layers. Therefore, modeling of experimental beams can be adoptable in ANSYS. Validation of experimental results can also be done using ANSYS.
Abstract One-third area of India's and major part of Gujarat are covered with expansive soil ... more Abstract One-third area of India's and major part of Gujarat are covered with expansive soil having high clay content s . These soils are problematic to geotechnical engineers as it causes damage to the structure founded on them. Soil swells when they imbibe water and shrink in their volume on drying. Swelling phenomena is one of the top-most challenge faced by the foundation engineer, due to the potential danger of unpredictable movements of structures founded on such types of soils. Various innovative methods have been used to counteract the volume change problem and to safeguard the structures. The use of nano chemical to reduce swelling potential of an expansive soil is a one of the developing research areas in geotechnical engineering. In this experimental work, an attempt is made to modify the swelling potential of expansive soil by using Terrenoseal (organo silane based nano chemical). The effects of adding these chemical s on soil is characterized by various geotechnical laboratory tests such as free swell index, consistency limits, compaction characteristics, swell pressure and unconfined compression test. Further, to study the physico- chemical properties using various analytical techniques such as Fourier Transformation Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), Particle size analysis, wettability, etc. are performed in the laboratory. The laboratory results indicated that use of nano chemical reduced the swelling potential, shrinkage, free swell index and also increases unconfined compression strength and the maximum dry density. Analytical techniques show improvement in physico-chemical properties of the soil. pH and COD tests for treated and untreated were also performed and the results were within the permissible limits.
Journal of Engineering Education Transformations, Jan 31, 2021
The conventional classroom methods of instruction in engineering education have been transformed ... more The conventional classroom methods of instruction in engineering education have been transformed into online lectures or remote teaching in recent months. This sudden transformation of pedagogy has largely influenced the cognitive ability of the students including emotional and psychological attributes. Therefore it has become necessary to understand the students' reflections on this pedagogical transformation towards making remote teaching more learner-centric. The present study manifests the emotional and psychological challenges experienced by the students during online learning. An anonymous online survey has been conducted to collect actual data. The survey has been conducted for all the students from 3,5, and 7 semesters at the Department of Civil Engineering degree course offered by the Marwadi University, Rajkot, Gujarat, India to obtain the differences or similarities in the responses towards the questionnaire. The responses of 111 students have been collected. The online survey form has been designed to offer 19 questions on emotional, psychological aspects, and creative suggestions. The Chisquare method and standard deviation have been utilized for the analysis and interpretation of the data and to observe the degrees of differences or similarities in the reflections. The trends of suggestions on the specific situations are also analyzed by the Chi-square method and the standard deviation. The Chi-square analysis revealed that irrespective of the level of maturities, gender, semesters, and styles of learning, the responses are similar towards the questions related to the likes and dislikes of the remote teaching and largely owing to the sudden change in the conventional pedagogy, the students are not fully comfortable. On the other hand, a trend of similar suggestions to improvise the pedagogy of remote teaching has been observed.
This paper presents experimental results of advanced investigation carried out on the beams reinf... more This paper presents experimental results of advanced investigation carried out on the beams reinforced with Glass Fiber Reinforced Polymer (GFRP) rebar and stirrups. Twelve beams reinforced with GFRP and one beam with steel reinforcement of size 230
International Journal of Advance Engineering and Research Development, 2017
Fiber reinforced polymer (FRP) as an external reinforcement is used extensively to enhance the st... more Fiber reinforced polymer (FRP) as an external reinforcement is used extensively to enhance the strength requirement related to flexure and shear in structural systems. But the strengthening of members subjected to torsion is yet to be explored as Torsion failure is a brittle form of failure. In present study experimental and analytical study on torsional strengthening of RC beam with GFRP lamentation. Total six rectangular beams of size 180*230 and length 1500 mm are casted. Out of six beam one beam as control beam and remaining five beams are GFRP wrapped beam at different configuration. Numerical work was carried out using non-linear finite element (FE). Keywords— GFRP laminates, Torsional Strengthening.
The maintenance, rehabilitation and upgrading of structural members is perhaps one of the most cr... more The maintenance, rehabilitation and upgrading of structural members is perhaps one of the most crucial problems in civil engineering applications. This research study presents to Study the Effect of Different Strengthening Patterns Using GFRP (Glass Fibre Reinforced Polymer) on Shear Capacity of the Beam. Totally twelve rectangular beams having 700 mm x 150 mm x 150mm were casted. The variables considered includes three different grades of concrete i.e. M20, M30, M 40 and three different strengthening schemes were adopted (i.e. U shape vertical strip wrap "UVS", U-wrap-"U", Vertical strip at 50˚ "VS 50˚"). Shear test, using simple beam with two-point loading was adopted in UTM testing Machine to study for the performance of GFRP wrapped beams in terms of increase in shear capacity and deflection and it was compared with the blank beams. The test results show that the beams strengthened with GFRP laminates exhibit better performance. The shear strength is increased by applying different pattern of GFRP strengthening scheme. The ultimate shear strength is increased by 35%, 34% and 11% in U-shape wrapping beam in M20, M30 and M40 respectively.
The objective of Earthquake Engineering is to design a structure in such manner so that the damag... more The objective of Earthquake Engineering is to design a structure in such manner so that the damage of structure or structural member during earthquake is minimized. The paper aims the review on the different methods for the seismic analysis of the Elevated Storage Reservoir (ESR) as it may be dynamic or static and it can be linear or nonlinear in terms of geometry or material. Response spectrum and time history are dynamic analysis whereas seismic coefficient and pushover analysis are the static seismic analysis methods. This paper is attempted to understand the basic fundamental of the static pushover analysis with respect to other methods and the review of differential studies of seismic analysis available in the literature on seismic analysis of ESR.
International Journal of Advance Engineering and Research Development, 2017
Now a day, corrosion is the governing factor in the deterioration of the structure in the saline ... more Now a day, corrosion is the governing factor in the deterioration of the structure in the saline and cold environment. To overcome this problem FRP reinforcement is extensively used in construction industries. The objective of this study is to asses the behavior of the FRP reinforced structures in the serviceability limit state design both for shear and flexure. Moreover deflection control is also considered.
International Journal of Research in Engineering and Technology, 2015
Development of civil engineering is intimately connected to innovation in structural material. To... more Development of civil engineering is intimately connected to innovation in structural material. To full fill the requirement of advance infrastructure in India, modern technologies and innovative materials has started to makes its way. Structures with bar corrosion and other distresses requires repair, rehabilitation and retrofits for increase strength, durability and much more life span. Fiber reinforce plastic (FRP) reinforcements provides solution for such work due to its non-corrosive and non-magnetic nature also high strength and low weight ratio. Now a day FRP materials are used for internal reinforcement for RC structures worldwide.
Abstract One-third area of India's and major part of Gujarat are covered with expansive soil ... more Abstract One-third area of India's and major part of Gujarat are covered with expansive soil having high clay content s . These soils are problematic to geotechnical engineers as it causes damage to the structure founded on them. Soil swells when they imbibe water and shrink in their volume on drying. Swelling phenomena is one of the top-most challenge faced by the foundation engineer, due to the potential danger of unpredictable movements of structures founded on such types of soils. Various innovative methods have been used to counteract the volume change problem and to safeguard the structures. The use of nano chemical to reduce swelling potential of an expansive soil is a one of the developing research areas in geotechnical engineering. In this experimental work, an attempt is made to modify the swelling potential of expansive soil by using Terrenoseal (organo silane based nano chemical). The effects of adding these chemical s on soil is characterized by various geotechnical laboratory tests such as free swell index, consistency limits, compaction characteristics, swell pressure and unconfined compression test. Further, to study the physico- chemical properties using various analytical techniques such as Fourier Transformation Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), Particle size analysis, wettability, etc. are performed in the laboratory. The laboratory results indicated that use of nano chemical reduced the swelling potential, shrinkage, free swell index and also increases unconfined compression strength and the maximum dry density. Analytical techniques show improvement in physico-chemical properties of the soil. pH and COD tests for treated and untreated were also performed and the results were within the permissible limits.
Many concrete structures are getting weakened or collapsed due to corrosion of steel reinforcemen... more Many concrete structures are getting weakened or collapsed due to corrosion of steel reinforcement in structures and other factors. Rehabilitation and strengthening of concrete structures with FRP (Fibre Reinforced Polymers) has been a useful technique since last few years. FRP sheets or plates are very suitable for strengthening not only because of their strength, but also due to the simplicity in the application. In this review paper, different strengthening techniques using FRP and other materials are reviewed. It can be concluded from the literature review that FRP is one of the efficient option for strengthening in either of the case like increasing the load carrying capacity of structures or to restore the original capacity of the structure after distress due to any means.
International Journal of Research in Engineering and Technology, 2014
This paper presents the nonlinear Finite Element Analysis (FEA) that has been carried out to simu... more This paper presents the nonlinear Finite Element Analysis (FEA) that has been carried out to simulate the behaviour of failure modes of Reinforced Concrete (RC) beams strengthened in flexure by Fibre Reinforced Polymer (FRP) laminates. Two beams were modeled in FEM software using ANSYS. In those two beams, one beam is control beam without FRP and other beam is Glass Fibre Reinforced Polymer (GFRP) strengthened beams. From the analyses the load deflection relationships, crack pattern, first crack load and Ultimate load was obtained and compared with the experimental results available in Literature. The load deflection plots obtained from numerical studies show good agreement with the experimental plots. There was a difference in behaviour between the RC beams strengthened with and without GFRP layers. Therefore, modeling of experimental beams can be adoptable in ANSYS. Validation of experimental results can also be done using ANSYS.
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