Pub Date : 2021-03-31DOI: 10.55083/irjeas.2021.v09i01001
Mamta Narware, Laxman Solankee
With the emphasis on reducing carbon footprint and promoting the utilization of non renewable resources of energy in production of electricity, the micro grids have emerged as popular arrangement. Micro grids have empowered the users with flexibility in generating & controling electricity as per their requirements and have reduced their dependence on utility grid. Also they can now transfer surplus electrical energy to utility grid and can earn monetary gains. Photovoltaic systems have emerged as indispensable alternative over other distributed energy resources that can be inetrated in microgrids due to their simple design, easy to install and easy to maintain features. However the deep penetration of microgrid systems is posing threat to reliable & optimal operation of main utility grids.
{"title":"A WAVELET TRANSFORM AND DATA MINING TECHNIQUE BASED PROTECTION TECHNIQUE FOR MICROGRID","authors":"Mamta Narware, Laxman Solankee","doi":"10.55083/irjeas.2021.v09i01001","DOIUrl":"https://doi.org/10.55083/irjeas.2021.v09i01001","url":null,"abstract":"With the emphasis on reducing carbon footprint and promoting the utilization of non renewable resources of energy in production of electricity, the micro grids have emerged as popular arrangement. Micro grids have empowered the users with flexibility in generating & controling electricity as per their requirements and have reduced their dependence on utility grid. Also they can now transfer surplus electrical energy to utility grid and can earn monetary gains. Photovoltaic systems have emerged as indispensable alternative over other distributed energy resources that can be inetrated in microgrids due to their simple design, easy to install and easy to maintain features. However the deep penetration of microgrid systems is posing threat to reliable & optimal operation of main utility grids.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78369451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-21DOI: 10.46565/JREAS.2021.V06I01.008
Ravindra Gimonkar
In the modern world, there is a continuous increasing capacity for various categories of solid waste. Waste has become the biggest problem in today's world. Until now there is no proper management of waste. For managing the waste there are various segregation methods and products available but only at industrial levels. To properly pull off the waste it has to be handled, separate, transported and disposed of so as to reduce the risks to the public lives and sustainable environment. The economic value of waste is best comprehended when it is sequestered. This paper aims towards an automatic waste segregation system at the household level and small society peoples. This system is easy and has a simple solution to segregating the waste into three categories of metal waste, solid waste, and wet waste. Here we are using Arduino Uno for segregation operation. For each waste we use an electronic sensor for detection and for separation small mechanical arms are used. This paper will help society with waste management and aims to recycle the waste accordingly. Keywords-Automation, industrial management, segregation
{"title":"AUTOMATED WASTE SEGREGATOR","authors":"Ravindra Gimonkar","doi":"10.46565/JREAS.2021.V06I01.008","DOIUrl":"https://doi.org/10.46565/JREAS.2021.V06I01.008","url":null,"abstract":"In the modern world, there is a continuous increasing capacity for various categories of solid waste. Waste has become the biggest problem in today's world. Until now there is no proper management of waste. For managing the waste there are various segregation methods and products available but only at industrial levels. To properly pull off the waste it has to be handled, separate, transported and disposed of so as to reduce the risks to the public lives and sustainable environment. The economic value of waste is best comprehended when it is sequestered. This paper aims towards an automatic waste segregation system at the household level and small society peoples. This system is easy and has a simple solution to segregating the waste into three categories of metal waste, solid waste, and wet waste. Here we are using Arduino Uno for segregation operation. For each waste we use an electronic sensor for detection and for separation small mechanical arms are used. This paper will help society with waste management and aims to recycle the waste accordingly. Keywords-Automation, industrial management, segregation","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90621620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.46565/jreas.2021.v06i03.005
J. Uma maheswari, S. Kavitha
{"title":"APPLICATIONS OF ELECTRONICS IN SMALL SCALE INDUSTRIES FOR COUNTING PRODUCTS","authors":"J. Uma maheswari, S. Kavitha","doi":"10.46565/jreas.2021.v06i03.005","DOIUrl":"https://doi.org/10.46565/jreas.2021.v06i03.005","url":null,"abstract":"","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"229 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77555743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.46565/jreas.2021.v06i03.006
Rashi Sheth, Ninad Patil, D. Kosankar, K. Bhoyar
A small-scale industry having various departments deals with various kinds of data. The management and the flow control of data becomes a tedious job if the work is manual. So for the ease of the above purpose, an application is created on .net framework using C# language and Server Management Studio as a back-end for database management purposes. Various modules including friendly user interfaces are created for powerful data management, data analysis, and data retrieval system. The data visualization tools help in better data analysis.
{"title":"DEVELOPING A DESKTOP APPLICATION FOR INFORMATION MANAGEMENT AND DATA RETRIEVAL SYSTEM FOR A SMALL SCALE INDUSTRY","authors":"Rashi Sheth, Ninad Patil, D. Kosankar, K. Bhoyar","doi":"10.46565/jreas.2021.v06i03.006","DOIUrl":"https://doi.org/10.46565/jreas.2021.v06i03.006","url":null,"abstract":"A small-scale industry having various departments deals with various kinds of data. The management and the flow control of data becomes a tedious job if the work is manual. So for the ease of the above purpose, an application is created on .net framework using C# language and Server Management Studio as a back-end for database management purposes. Various modules including friendly user interfaces are created for powerful data management, data analysis, and data retrieval system. The data visualization tools help in better data analysis.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90957329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.46565/jreas.2021.v06i03.007
A. Thatere, S. Khade, V. Lande, Aditya Chinchole
A T-shaped rectangular Microstrip slot antenna for mid-band applications like5G bands n48, n77, n78 and other satellite communication applications are portrayed. The proposed antenna has dimension of 35×30×1.6 mm and the structure consists Coplanar Waveguide (CPW) with miniaturized size of antenna. The proposed design is embedded on FR4 lossy substrate with dielectric constant of 4.3 and thickness of 1.6 mm. A rectangular slot is etched with dimension of 23×13 mm in which T-shape patch is inserted. The current distribution, gain, directivity, impedance and other simulated results are also presented. The gain and directivity at the resonance frequency of 3.637 GHz is 3.66 dB and 3.9 dBi respectively. Maximum current is around 125 A/m and antenna has a bandwidth of around 1.7 GHz
{"title":"A T-SHAPED RECTANGULAR MICROSTRIP SLOT ANTENNA FOR MID-BAND AND 5G APPLICATIONS","authors":"A. Thatere, S. Khade, V. Lande, Aditya Chinchole","doi":"10.46565/jreas.2021.v06i03.007","DOIUrl":"https://doi.org/10.46565/jreas.2021.v06i03.007","url":null,"abstract":"A T-shaped rectangular Microstrip slot antenna for mid-band applications like5G bands n48, n77, n78 and other satellite communication applications are portrayed. The proposed antenna has dimension of 35×30×1.6 mm and the structure consists Coplanar Waveguide (CPW) with miniaturized size of antenna. The proposed design is embedded on FR4 lossy substrate with dielectric constant of 4.3 and thickness of 1.6 mm. A rectangular slot is etched with dimension of 23×13 mm in which T-shape patch is inserted. The current distribution, gain, directivity, impedance and other simulated results are also presented. The gain and directivity at the resonance frequency of 3.637 GHz is 3.66 dB and 3.9 dBi respectively. Maximum current is around 125 A/m and antenna has a bandwidth of around 1.7 GHz","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90597005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-31DOI: 10.46565/jreas.2020.v05i04.002
Amin Moslemi Petrudi
In nanofluids, due to the small size of the particles, they greatly reduce the problems caused by corrosion, impurities, and pressure drop, and the stability of fluids against sediment is significantly improved. Due to the high conductivity of nanoparticles, with the distribution in the base fluid, they increase the thermal conductivity of the fluid, which is one of the basic parameters of heat transfer. In this paper, properties using experimental data and artificial neural networks, to maximize thermal conductivity, temperature changes, and nanofluid volume fraction of NSGA-II optimization algorithm and also to obtain thermal conductivity values from 154 experimental data, artificial neural network modeling is used. Various indices including R-squared and Mean Square Error (MSE) have been used to evaluate the modeling accuracy in prediction, Reynolds number, and nanofluid thermal conductivity. The coefficient of determination of the relation (R-squared) is equal to 0.9988, which indicates the acceptable agreement of the proposed relationship with the experimental data. To optimize, the results are presented as a target function, the Parto-front, and its optimal points. Optimal results showed that the maximum thermal conductivity coefficient and the optimal Reynolds number occur in a volume fraction of 2%.
{"title":"Modeling and Multi-Objective Optimization of Thermophysical Properties for Thermal Conductivity and Reynolds number of CuO-Water Nanofluid using Artificial Neural Network.","authors":"Amin Moslemi Petrudi","doi":"10.46565/jreas.2020.v05i04.002","DOIUrl":"https://doi.org/10.46565/jreas.2020.v05i04.002","url":null,"abstract":"In nanofluids, due to the small size of the particles, they greatly reduce the problems caused by corrosion, impurities, and pressure drop, and the stability of fluids against sediment is significantly improved. Due to the high conductivity of nanoparticles, with the distribution in the base fluid, they increase the thermal conductivity of the fluid, which is one of the basic parameters of heat transfer. In this paper, properties using experimental data and artificial neural networks, to maximize thermal conductivity, temperature changes, and nanofluid volume fraction of NSGA-II optimization algorithm and also to obtain thermal conductivity values from 154 experimental data, artificial neural network modeling is used. Various indices including R-squared and Mean Square Error (MSE) have been used to evaluate the modeling accuracy in prediction, Reynolds number, and nanofluid thermal conductivity. The coefficient of determination of the relation (R-squared) is equal to 0.9988, which indicates the acceptable agreement of the proposed relationship with the experimental data. To optimize, the results are presented as a target function, the Parto-front, and its optimal points. Optimal results showed that the maximum thermal conductivity coefficient and the optimal Reynolds number occur in a volume fraction of 2%.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"189 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76995319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-15DOI: 10.46565/jreas.2020.v05i03.003
Shahzad Ashraf, Durr Muhammad, Muhammad Shuaeeb, Zeeshan Aslam
- Now a days a computerized consumer behavior is being practice to get maximum efficient results in the context of a globalized market. More attention is paid to the consumption of manufactured goods and everyday items. Much less attention is paid to the service sector, in particular medical, recreational and physical. There is also a lack of application of mathematically grounded, computer methods and models for such modeling. We propose modeling the behavior of consumers of aesthetic cosmetology services as tasks of multi-criteria decision making on a variety of alternatives. The approach to the estimation of cosmetology service by clients based on fuzzy modeling is described. Specific features of cosmetology services, marketing, communication components are determined. The main consumer criteria for assessing cosmetology services are used. A computer model in the Fuzzy Tech, specialized software product for computer fuzzy modeling, was constructed. Integrated assessments for cosmetic institutions in Kharkiv have been calculated. The results are analyzed and recommendations for improving the quality of cosmetology service, websites of cosmetology institutions, are suggested. The principles of the proposed approach, the described fuzzy model and its computer implementation can be applied to a wide range of tasks of multi criteria assessment of customer service in various social fields - retail stores, medicine, culture, physical educationand training, public household and domestic
{"title":"DEVELOPMENT OF SHREWD COSMETOLOGY MODEL THROUGH FUZZY LOGIC","authors":"Shahzad Ashraf, Durr Muhammad, Muhammad Shuaeeb, Zeeshan Aslam","doi":"10.46565/jreas.2020.v05i03.003","DOIUrl":"https://doi.org/10.46565/jreas.2020.v05i03.003","url":null,"abstract":"- Now a days a computerized consumer behavior is being practice to get maximum efficient results in the context of a globalized market. More attention is paid to the consumption of manufactured goods and everyday items. Much less attention is paid to the service sector, in particular medical, recreational and physical. There is also a lack of application of mathematically grounded, computer methods and models for such modeling. We propose modeling the behavior of consumers of aesthetic cosmetology services as tasks of multi-criteria decision making on a variety of alternatives. The approach to the estimation of cosmetology service by clients based on fuzzy modeling is described. Specific features of cosmetology services, marketing, communication components are determined. The main consumer criteria for assessing cosmetology services are used. A computer model in the Fuzzy Tech, specialized software product for computer fuzzy modeling, was constructed. Integrated assessments for cosmetic institutions in Kharkiv have been calculated. The results are analyzed and recommendations for improving the quality of cosmetology service, websites of cosmetology institutions, are suggested. The principles of the proposed approach, the described fuzzy model and its computer implementation can be applied to a wide range of tasks of multi criteria assessment of customer service in various social fields - retail stores, medicine, culture, physical educationand training, public household and domestic","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80433881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-15DOI: 10.46565/jreas.2020.v05i03.005
U. Shinde, R. Somalwar, Namesh A. Kale, Ashish J Nandeshwar, Antariksh V. Mendhe
: Today with the enormously increasing and the advancing technologies the need of the automation has been reached to a great extent and will further increase in the future. Therefore, in this view our research work deals with the design, testing and implementation of cost-effective CNC based PCB Milling Machine which can be deployed in small scale industries and most targeted areas like academic institutions(engineering) to encourage self-designing of electronic circuits among students. Technically the control mechanism is sole work of AT Mega 328P Arduino microcontroller with auxiliary drivers which help in precise step control of stepper motors whose rotational movement appears as a controlled linear motion of x, y& z-axis each deployed with this motor. The input signal in form of design, picture is interpreted in form of G-codes through dedicated firmware which are installed in the Arduino Programming IDE to help generate the actuating signals proportional to the interpolating situations. This paper discusses about the additional feature of human safety system using IR sensors which are employed around the periphery of the working area.
当前位置今天，随着技术的飞速发展和进步，对自动化的需求已经达到了很大程度，并且在未来还会进一步增加。因此，从这个角度来看，我们的研究工作涉及设计，测试和实施具有成本效益的基于CNC的PCB铣床，可以部署在小型工业和最有针对性的领域，如学术机构(工程)，以鼓励学生自我设计电子电路。从技术上讲，控制机制是AT Mega 328P Arduino微控制器的唯一工作，辅助驱动器有助于对步进电机进行精确的步进控制，步进电机的旋转运动表现为x, y和z轴的受控线性运动。设计形式的输入信号，图片通过安装在Arduino Programming IDE中的专用固件以g码的形式进行解释，帮助生成与插值情况成比例的驱动信号。本文讨论了在工作区域外围安装红外传感器对人体安全系统的附加功能。
{"title":"SHORT PAPER ON CNC BASED PCB MILLING MACHINE CONSIDERING HUMAN SAFETY","authors":"U. Shinde, R. Somalwar, Namesh A. Kale, Ashish J Nandeshwar, Antariksh V. Mendhe","doi":"10.46565/jreas.2020.v05i03.005","DOIUrl":"https://doi.org/10.46565/jreas.2020.v05i03.005","url":null,"abstract":": Today with the enormously increasing and the advancing technologies the need of the automation has been reached to a great extent and will further increase in the future. Therefore, in this view our research work deals with the design, testing and implementation of cost-effective CNC based PCB Milling Machine which can be deployed in small scale industries and most targeted areas like academic institutions(engineering) to encourage self-designing of electronic circuits among students. Technically the control mechanism is sole work of AT Mega 328P Arduino microcontroller with auxiliary drivers which help in precise step control of stepper motors whose rotational movement appears as a controlled linear motion of x, y& z-axis each deployed with this motor. The input signal in form of design, picture is interpreted in form of G-codes through dedicated firmware which are installed in the Arduino Programming IDE to help generate the actuating signals proportional to the interpolating situations. This paper discusses about the additional feature of human safety system using IR sensors which are employed around the periphery of the working area.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74208123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-15DOI: 10.46565/jreas.2020.v05i01.002
M. Agrawal
Ultrcapacitor (UC) or Supercapacitor(SC) is gaining popularity owing to large values of capacitance, high power density, high energy density and fast charging. UC has found applications in many industries as a reliable energy storage device. This paper is aimed at presenting the charging characteristics of UC when charged using PWM technique. Other methods of charging UC, like constant voltage and constant charging method, pose certain limitations and increase the charging time. A comparison is drawn when UC is charged using constant current charging method and PWM technique. The proposed method facilitates relatively faster charging of UC in a controlled manner.
{"title":"CONTROLLED CHARGING OF ULTRA CAPACITORBY PWM TECHNIQUE","authors":"M. Agrawal","doi":"10.46565/jreas.2020.v05i01.002","DOIUrl":"https://doi.org/10.46565/jreas.2020.v05i01.002","url":null,"abstract":"Ultrcapacitor (UC) or Supercapacitor(SC) is gaining popularity owing to large values of capacitance, high power density, high energy density and fast charging. UC has found applications in many industries as a reliable energy storage device. This paper is aimed at presenting the charging characteristics of UC when charged using PWM technique. Other methods of charging UC, like constant voltage and constant charging method, pose certain limitations and increase the charging time. A comparison is drawn when UC is charged using constant current charging method and PWM technique. The proposed method facilitates relatively faster charging of UC in a controlled manner.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79060058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-15DOI: 10.46565/jreas.2019.v04i04.004
S. Kulkarni, C. Pereira
Globally, concrete is the most widely used construction material after water. Conventional concrete has traditionally been designed on the basis of 28 day compressive strength and may not meet the functional requirements of concrete structures like resistance to environmental & chemical attack, impermeability, shrinkage cracks, etc. This generally impacts the maintenance free service life of the structure. Normally in developing countries, concrete is specified in a prescriptive manner e.g. M-50. No other parameters for durability and performance are specified including the service life of the structure. As a result of this many times concrete meets the standard basic parameters but fails in meeting durability parameters or requirements. To counter the above requirements a shift to High Performance Concrete (HPC) is desirable. HPC should not be confused with High strength concrete. HPC is an engineered concrete meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing and curing practices. It includes concrete that provides high strength, high early strength, ease in pumping and placement with or without vibration, resistance to segregation and bleeding, volume stability and resistance to shrinkage. It also enhances resistance to sulphate attack, alkali silica reaction, carbonation, chloride & corrosion induced disruption, low permeability and diffusion, high modulus of elasticity and lower creep coefficient, improved toughness, impact and abrasion resistance, enhanced resistance to freeze and thaw attack, higher durability and lower service life of structures. This article deals with the various durability aspects of High Performance Concrete in terms of mix design approach, testing & performance evaluation. As a case study this article emphasises on M80 free flow high performance concrete for shear columns & core walls and M40 temperature controlled concrete for raft foundations of high rise structures, which highlights the durability aspects holistically. The following criteria will be discussed in the article pertaining to ease of placement by using free flow or self-compacting concrete, Temperature controlled concrete for reducing core temperature and reducing the effect of thermal stresses on concrete and long term mechanical properties, which include Modulus of elasticity, drying shrinkage & creep in concrete.
{"title":"DURABILITY OF CONCRETE MATERIALS FORCOMPONENTS OF HIGH RISE STRUCTURES","authors":"S. Kulkarni, C. Pereira","doi":"10.46565/jreas.2019.v04i04.004","DOIUrl":"https://doi.org/10.46565/jreas.2019.v04i04.004","url":null,"abstract":"Globally, concrete is the most widely used construction material after water. Conventional concrete has traditionally been designed on the basis of 28 day compressive strength and may not meet the functional requirements of concrete structures like resistance to environmental & chemical attack, impermeability, shrinkage cracks, etc. This generally impacts the maintenance free service life of the structure. Normally in developing countries, concrete is specified in a prescriptive manner e.g. M-50. No other parameters for durability and performance are specified including the service life of the structure. As a result of this many times concrete meets the standard basic parameters but fails in meeting durability parameters or requirements. To counter the above requirements a shift to High Performance Concrete (HPC) is desirable. HPC should not be confused with High strength concrete. HPC is an engineered concrete meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing and curing practices. It includes concrete that provides high strength, high early strength, ease in pumping and placement with or without vibration, resistance to segregation and bleeding, volume stability and resistance to shrinkage. It also enhances resistance to sulphate attack, alkali silica reaction, carbonation, chloride & corrosion induced disruption, low permeability and diffusion, high modulus of elasticity and lower creep coefficient, improved toughness, impact and abrasion resistance, enhanced resistance to freeze and thaw attack, higher durability and lower service life of structures. This article deals with the various durability aspects of High Performance Concrete in terms of mix design approach, testing & performance evaluation. As a case study this article emphasises on M80 free flow high performance concrete for shear columns & core walls and M40 temperature controlled concrete for raft foundations of high rise structures, which highlights the durability aspects holistically. The following criteria will be discussed in the article pertaining to ease of placement by using free flow or self-compacting concrete, Temperature controlled concrete for reducing core temperature and reducing the effect of thermal stresses on concrete and long term mechanical properties, which include Modulus of elasticity, drying shrinkage & creep in concrete.","PeriodicalId":14343,"journal":{"name":"International Journal of Research in Engineering and Applied Sciences","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74974592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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