Pub Date : 2020-02-01DOI: 10.1109/ASET48392.2020.9118210
Dinu ThomasThekkuden, A. Mourad, M. Sherif
Past studies have suggested that welding current and voltage are signature variables that have potential information on welding quality and can be used for real-time monitoring while welding. This work explores the interaction between gas metal arc welding parameters such as stick out distance, gas flow rate and transverse speed to the mean and standard deviation of welding voltage and current. SA 516 gr.70 boiler plates with v-grooves were welded using KUKA KR robot and Fronius TPS 5000 power source. Data acquisition system with a sampling rate of 8 kHz was used to acquire current and voltage data during welding. Experimental tests were organized using central composite design. Mean and standard deviation of voltage and current are analyzed using response surface analysis. The measured voltage was confirmed previously to be an effective parameter for detecting porosity using control chart and probability density distribution. Therefore, in this research, the effects and interactions of welding parameters are statistically analyzed. Stick out distance is concluded to be the most effective factor on to the responses being investigated. A change in the gas flow rate can affect the voltage significantly but will not alter the welding current. In addition, mathematical models are developed to forecast mean and normal voltage and current deviations in real-time.
{"title":"Response surface analysis of statistical features of voltage and current in a GMAW powersource on welding v-groove joints","authors":"Dinu ThomasThekkuden, A. Mourad, M. Sherif","doi":"10.1109/ASET48392.2020.9118210","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118210","url":null,"abstract":"Past studies have suggested that welding current and voltage are signature variables that have potential information on welding quality and can be used for real-time monitoring while welding. This work explores the interaction between gas metal arc welding parameters such as stick out distance, gas flow rate and transverse speed to the mean and standard deviation of welding voltage and current. SA 516 gr.70 boiler plates with v-grooves were welded using KUKA KR robot and Fronius TPS 5000 power source. Data acquisition system with a sampling rate of 8 kHz was used to acquire current and voltage data during welding. Experimental tests were organized using central composite design. Mean and standard deviation of voltage and current are analyzed using response surface analysis. The measured voltage was confirmed previously to be an effective parameter for detecting porosity using control chart and probability density distribution. Therefore, in this research, the effects and interactions of welding parameters are statistically analyzed. Stick out distance is concluded to be the most effective factor on to the responses being investigated. A change in the gas flow rate can affect the voltage significantly but will not alter the welding current. In addition, mathematical models are developed to forecast mean and normal voltage and current deviations in real-time.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132015659","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118332
M. Ali, Huda A. Alzaabi, Aaesha S. Alnuaimi, Anwar Jamdal
Heart diseases can be considered as the most occurring long-lasting diseases in modern times. In this paper a standalone smart healthcare device is developed and implemented. The device can monitor the heart condition based on the measured electrocardiogram (ECG) signal and send/save updated report for the patient, doctor or health care center (HCC). This collected data is also processed and analyzed inside the device by using multi-layer perceptron to predict any abnormal behavior. In case of any abnormalities, the device will send an alarm to the patient, and also sort of data could be submitted through the cloud to the health care center. In case of an emergency, the system has the capability to send a call/SMS with location information to the emergency department for an action.
{"title":"Smart Healthcare Device for Cardiac Patients","authors":"M. Ali, Huda A. Alzaabi, Aaesha S. Alnuaimi, Anwar Jamdal","doi":"10.1109/ASET48392.2020.9118332","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118332","url":null,"abstract":"Heart diseases can be considered as the most occurring long-lasting diseases in modern times. In this paper a standalone smart healthcare device is developed and implemented. The device can monitor the heart condition based on the measured electrocardiogram (ECG) signal and send/save updated report for the patient, doctor or health care center (HCC). This collected data is also processed and analyzed inside the device by using multi-layer perceptron to predict any abnormal behavior. In case of any abnormalities, the device will send an alarm to the patient, and also sort of data could be submitted through the cloud to the health care center. In case of an emergency, the system has the capability to send a call/SMS with location information to the emergency department for an action.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133490010","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118186
Abdel-Moniem El-Shorbagy
Over the past few decades, the concept of sustainable building has become the mainstream among architects, urban designers, and the building industry. The use of appropriate building materials that demonstrate constructive environmental attributes is of prime importance to realize green buildings. In this context, wood, as a renewable building material, exhibits numerous significant ecological characteristics, including low carbon impact, and low embodied energy. In addition, the simplicity of the timber structural systems, along with their sustainability and biocompatibility, makes them more competitive for constructing buildings than other structural systems. Accordingly, the architectural profession witnessed many exciting experiments using wood in tall buildings as well as in the urban context. However, the main objective of this research is to examine the specific natural characteristics of wood, which qualifies it to be an appropriate replacement for fossil-fuel-based products such as steel and concrete. It also intends to discuss some representative architectural projects, which successfully employed wood as their primary structural system. However, this study aims to highlight the significance of wood as a potentially sustainable resource for the future of the building industry.
{"title":"Wood shapes the future of sustainable architecture","authors":"Abdel-Moniem El-Shorbagy","doi":"10.1109/ASET48392.2020.9118186","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118186","url":null,"abstract":"Over the past few decades, the concept of sustainable building has become the mainstream among architects, urban designers, and the building industry. The use of appropriate building materials that demonstrate constructive environmental attributes is of prime importance to realize green buildings. In this context, wood, as a renewable building material, exhibits numerous significant ecological characteristics, including low carbon impact, and low embodied energy. In addition, the simplicity of the timber structural systems, along with their sustainability and biocompatibility, makes them more competitive for constructing buildings than other structural systems. Accordingly, the architectural profession witnessed many exciting experiments using wood in tall buildings as well as in the urban context. However, the main objective of this research is to examine the specific natural characteristics of wood, which qualifies it to be an appropriate replacement for fossil-fuel-based products such as steel and concrete. It also intends to discuss some representative architectural projects, which successfully employed wood as their primary structural system. However, this study aims to highlight the significance of wood as a potentially sustainable resource for the future of the building industry.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131814861","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118240
Yousef Awera, F. Abed
This paper presents a numerical study of axial behavior of circular concrete columns reinforced with Glass Fiber Reinforced Polymer (GFRP) bars and spirals. A nonlinear finite element (FE) model was developed using ABAQUS to predict the compressive behavior of the concentrically loaded columns. Initially, the FE model was verified using an existing experimental paper which investigate the axial capacity of circular concrete columns reinforced with GFRP bars and spirals. The concrete used in the experiment had a compressive strength of 41.9 MPa. Parametric study aiming at evaluating the effect of varying the longitudinal and transverse GFRP reinforcement ratios in the columns was carried out. The results indicated that both the ductility and peak load increase when the reinforcement ratio increases. For spirals, when the diameter increases or the pith decreases, the ductility and capacity increase but with keeping a pitch that allows confinement in the case of changing the spiral diameter.
{"title":"Axial Capacity of Circular Concrete Columns Reinforced with GFRP Bars and Spirals using FEA","authors":"Yousef Awera, F. Abed","doi":"10.1109/ASET48392.2020.9118240","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118240","url":null,"abstract":"This paper presents a numerical study of axial behavior of circular concrete columns reinforced with Glass Fiber Reinforced Polymer (GFRP) bars and spirals. A nonlinear finite element (FE) model was developed using ABAQUS to predict the compressive behavior of the concentrically loaded columns. Initially, the FE model was verified using an existing experimental paper which investigate the axial capacity of circular concrete columns reinforced with GFRP bars and spirals. The concrete used in the experiment had a compressive strength of 41.9 MPa. Parametric study aiming at evaluating the effect of varying the longitudinal and transverse GFRP reinforcement ratios in the columns was carried out. The results indicated that both the ductility and peak load increase when the reinforcement ratio increases. For spirals, when the diameter increases or the pith decreases, the ductility and capacity increase but with keeping a pitch that allows confinement in the case of changing the spiral diameter.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133858085","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118188
S. M. Shaikh, P. Mane
The need of well-trained engineers is very huge in India. At present, the enterprises cannot fill all job openings even though the number of engineering institutes has increased exponentially in the last decade. The main hurdle in this is the holistic development and in particular the communication skills of the budding engineers in India. In this paper we have included case study of our institute and tried to explore the myriad ways in which these issues can be addressed. It also gives various methods and strategies for substantial improvement in students by adopting innovative teaching techniques. It also tries to throw some light on role of instructional/learning designers.
{"title":"Case Study of Outcomes of Innovative Teaching methods adopted in Engineering Education in India","authors":"S. M. Shaikh, P. Mane","doi":"10.1109/ASET48392.2020.9118188","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118188","url":null,"abstract":"The need of well-trained engineers is very huge in India. At present, the enterprises cannot fill all job openings even though the number of engineering institutes has increased exponentially in the last decade. The main hurdle in this is the holistic development and in particular the communication skills of the budding engineers in India. In this paper we have included case study of our institute and tried to explore the myriad ways in which these issues can be addressed. It also gives various methods and strategies for substantial improvement in students by adopting innovative teaching techniques. It also tries to throw some light on role of instructional/learning designers.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129068557","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118314
I. Alsyouf
This paper suggests and introduces a new concept that is based on the quality circles concept and suggests introducing it to enhance the sustainability performance in higher education institutions. This concept is called the Sustainability Circles, which is adapted from the well-known Japanese quality circles concept. A sustainability circle indicates that a group of volunteer members with interests in a sustainability-related track, such as energy, water, transportation, etc., meets regularly to identify, analyze, and suggest initiatives. It has a significant advantage in engaging all university stakeholders. It aims to engage members of Institutions of Higher Education community (students, administrative/technical staff, and faculty members) in its endeavors to develop a culture of sustainability and incorporate sustainability in every aspect of campus life. The results of the implementation of the sustainability circles concept at the University of Sharjah are presented. Using the sustainability circle will help prepare the students, engage the faculty members and administrative staff to work together with partners from government and business, and international organizations and community leaders on solutions to local, regional, and global sustainability challenges. This will lead the Institutions of Higher Education to achieve excellent sustainability performance.
{"title":"Sustainability Circles the way to Sustainbility Excellence in Institutions of Higher Education","authors":"I. Alsyouf","doi":"10.1109/ASET48392.2020.9118314","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118314","url":null,"abstract":"This paper suggests and introduces a new concept that is based on the quality circles concept and suggests introducing it to enhance the sustainability performance in higher education institutions. This concept is called the Sustainability Circles, which is adapted from the well-known Japanese quality circles concept. A sustainability circle indicates that a group of volunteer members with interests in a sustainability-related track, such as energy, water, transportation, etc., meets regularly to identify, analyze, and suggest initiatives. It has a significant advantage in engaging all university stakeholders. It aims to engage members of Institutions of Higher Education community (students, administrative/technical staff, and faculty members) in its endeavors to develop a culture of sustainability and incorporate sustainability in every aspect of campus life. The results of the implementation of the sustainability circles concept at the University of Sharjah are presented. Using the sustainability circle will help prepare the students, engage the faculty members and administrative staff to work together with partners from government and business, and international organizations and community leaders on solutions to local, regional, and global sustainability challenges. This will lead the Institutions of Higher Education to achieve excellent sustainability performance.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"525 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117034082","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118385
S. Alansari, A. Ziadat
The research was developed to improve the logistical functions for further implement and enhancement-towards a selected corporation that serves in the field of aviation, maintenance, and logistics. The research conducted covers various methodologies that involve qualitative and quantitative approach enlightened through different literature review, articles, books, interviews, and journals. A survey was distributed to the workers, managers, and others in the selected corporation. It identified the importance of implementing Enterprise Resource Planning Systems (ERP) within any organization and demonstrated the vitality of establishing Standardized Operational Procedures that has to be completed when logistical and mobilization of goods functions are fulfilled. These functions would include the handling, transporting, and storage of all sort of goods, components, items, and parts. Alternative solutions and recommendations were provided to assist and enhance the current operations and activities that are completed within the selected service provider corporation in addition to any other similar corporations that may benefit from the research findings.
{"title":"Modelling a Sustainable Approach toward Logistical Functions at PAL Aerospace Services Aircraft Maintenance in the UAE","authors":"S. Alansari, A. Ziadat","doi":"10.1109/ASET48392.2020.9118385","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118385","url":null,"abstract":"The research was developed to improve the logistical functions for further implement and enhancement-towards a selected corporation that serves in the field of aviation, maintenance, and logistics. The research conducted covers various methodologies that involve qualitative and quantitative approach enlightened through different literature review, articles, books, interviews, and journals. A survey was distributed to the workers, managers, and others in the selected corporation. It identified the importance of implementing Enterprise Resource Planning Systems (ERP) within any organization and demonstrated the vitality of establishing Standardized Operational Procedures that has to be completed when logistical and mobilization of goods functions are fulfilled. These functions would include the handling, transporting, and storage of all sort of goods, components, items, and parts. Alternative solutions and recommendations were provided to assist and enhance the current operations and activities that are completed within the selected service provider corporation in addition to any other similar corporations that may benefit from the research findings.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117150139","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118335
Lekshmi Vijayalekshmi Amma, Farwa Ashraf
Many countries in the world, particularly the Middle East countries, are suffering from water scarcity. The use of reverse osmosis desalination for the production of potable water has drastically increased over the past few decades. UAE is one of the world leaders in desalination. Almost 61% of the desalinated water capacity in UAE is from reverse osmosis. Like most chemical processes, waste is an imminent by-product of desalination causing severe environmental and social problems. Majority of the Reverse osmosis plants in UAE dispose brine directly into the sea, which is not at all sustainable. An environmentally friendly and cost-effective alternative is required to manage the reject produced in the UAE. This paper focuses in analysing the sustainable options to manage the reject efficiently in UAE. Evaluations of different disposal methods were carried out, comparing all characteristics of each method of disposal and it was found out that, evaporation pond can be a possible alternative for brine disposal in UAE climatic conditions. The paper focuses on the efficiency and limitations of evaporation ponds in UAE.
{"title":"Brine Management in Reverse Osmosis Desalination: A UAE Perspective","authors":"Lekshmi Vijayalekshmi Amma, Farwa Ashraf","doi":"10.1109/ASET48392.2020.9118335","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118335","url":null,"abstract":"Many countries in the world, particularly the Middle East countries, are suffering from water scarcity. The use of reverse osmosis desalination for the production of potable water has drastically increased over the past few decades. UAE is one of the world leaders in desalination. Almost 61% of the desalinated water capacity in UAE is from reverse osmosis. Like most chemical processes, waste is an imminent by-product of desalination causing severe environmental and social problems. Majority of the Reverse osmosis plants in UAE dispose brine directly into the sea, which is not at all sustainable. An environmentally friendly and cost-effective alternative is required to manage the reject produced in the UAE. This paper focuses in analysing the sustainable options to manage the reject efficiently in UAE. Evaluations of different disposal methods were carried out, comparing all characteristics of each method of disposal and it was found out that, evaporation pond can be a possible alternative for brine disposal in UAE climatic conditions. The paper focuses on the efficiency and limitations of evaporation ponds in UAE.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115399950","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118361
A. A. Azeez, M. Alkhedher, M. Gadala
In rotating machinery, rolling element bearings are one of the most critical components and a large majority of system failures arise from faulty bearings. Hence, there is an increasing demand to find an effective and reliable condition monitoring technique. In this paper, a procedure for detecting various types of bearing faults using thermal imaging is presented and assessed. Five different fault cases are tested: no fault (NF), line fault (LF), small circle fault (SCF), double line fault (DLF), and large circle fault (LCF). Experiments were conducted on the BENTLY NEVADA RK4 Rotor Kit. The tests were performed at 1500 RPM and 2000 RPM. A video is recorded for 10 minutes using FLIR thermal imaging camera and images are extracted from the video and processed to detect the average temperature at the bearing hotspot using MATLAB. Analysis of the results show that Thermal Imaging can be used as an effective means to differentiate between different types of faults that occur in the outer race of the rolling element bearing.
{"title":"Thermal Imaging Fault Detection for Rolling Element Bearings","authors":"A. A. Azeez, M. Alkhedher, M. Gadala","doi":"10.1109/ASET48392.2020.9118361","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118361","url":null,"abstract":"In rotating machinery, rolling element bearings are one of the most critical components and a large majority of system failures arise from faulty bearings. Hence, there is an increasing demand to find an effective and reliable condition monitoring technique. In this paper, a procedure for detecting various types of bearing faults using thermal imaging is presented and assessed. Five different fault cases are tested: no fault (NF), line fault (LF), small circle fault (SCF), double line fault (DLF), and large circle fault (LCF). Experiments were conducted on the BENTLY NEVADA RK4 Rotor Kit. The tests were performed at 1500 RPM and 2000 RPM. A video is recorded for 10 minutes using FLIR thermal imaging camera and images are extracted from the video and processed to detect the average temperature at the bearing hotspot using MATLAB. Analysis of the results show that Thermal Imaging can be used as an effective means to differentiate between different types of faults that occur in the outer race of the rolling element bearing.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126645534","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 : 2020-02-01DOI: 10.1109/ASET48392.2020.9118294
Hemraj R. Kumavat, N. Chandak
Concrete subject to elevated temperatures are directly affected by inner microstructure blending components. As a consequence, owing to high temperatures, the non-destructive test (Rebound Index) helps to evaluates the behavior of concrete. The paper focuses on behavior of normal strength concrete specimens exposed to high temperatures ranging from 200°C to 800°C with distinct cooling regimes (air cooled condition, hot condition) on M20, M30 and M40 concrete grades. It is observed that the compressive strength is approximately 9% lower in air-cooled condition than in hot condition for concrete subjected to 200 to 400°C temperature. Reduction of compressive strength correlates with reduction of concrete graph cube strength by rebound hammer in temperature range from 600°C to 800°C. The results revealed that, due to greater crack propagation at temperature range between 600 and 800°C, the higher percentage loss in strength for M40 grade concrete results in reduced rebound index values.
{"title":"Experimental study on behavior of normal strength concrete influenced by elevated temperatures","authors":"Hemraj R. Kumavat, N. Chandak","doi":"10.1109/ASET48392.2020.9118294","DOIUrl":"https://doi.org/10.1109/ASET48392.2020.9118294","url":null,"abstract":"Concrete subject to elevated temperatures are directly affected by inner microstructure blending components. As a consequence, owing to high temperatures, the non-destructive test (Rebound Index) helps to evaluates the behavior of concrete. The paper focuses on behavior of normal strength concrete specimens exposed to high temperatures ranging from 200°C to 800°C with distinct cooling regimes (air cooled condition, hot condition) on M20, M30 and M40 concrete grades. It is observed that the compressive strength is approximately 9% lower in air-cooled condition than in hot condition for concrete subjected to 200 to 400°C temperature. Reduction of compressive strength correlates with reduction of concrete graph cube strength by rebound hammer in temperature range from 600°C to 800°C. The results revealed that, due to greater crack propagation at temperature range between 600 and 800°C, the higher percentage loss in strength for M40 grade concrete results in reduced rebound index values.","PeriodicalId":237887,"journal":{"name":"2020 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126654580","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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