Pub Date : 2021-12-30DOI: 10.52113/3/eng/mjet/2021-09-02/01-08
J. Hussein
Due to the amount of polluting emissions to the environment that are produced by hot mixtures during mixing in factories or their brushing on site, or their effect as waste after removal, it has become necessary to produce alternatives such as cold mixtures or semi-cold (warm) mixtures to reduce the amount of emissions of old pavement waste in Iraq. In this work, the old paving residues were shredded with locally produced emulsion in mixing ratios ranging from 2% to 4% of the total weight of the mixture and the fillers were replaced with Portland cement. The results showed that mixing the old worn pavement residues with the locally produced emulsion of 3.5% of the total weight of the mixture gives an increase in Marshall stability, Marshall flow and good volumetric properties when mixed at 85 ℃. At 25 ℃ the mechanical and volumetric properties are optimal in a curing period of 28 days. When the mixture is made at a temperature of 160 ℃, we get better volumetric and mechanical properties, but they are certainly less environmentally friendly.
{"title":"Developing a warm asphalt mixture using locally emulsion and old paving waste","authors":"J. Hussein","doi":"10.52113/3/eng/mjet/2021-09-02/01-08","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2021-09-02/01-08","url":null,"abstract":"Due to the amount of polluting emissions to the environment that are produced by hot mixtures during mixing in factories or their brushing on site, or their effect as waste after removal, it has become necessary to produce alternatives such as cold mixtures or semi-cold (warm) mixtures to reduce the amount of emissions of old pavement waste in Iraq. In this work, the old paving residues were shredded with locally produced emulsion in mixing ratios ranging from 2% to 4% of the total weight of the mixture and the fillers were replaced with Portland cement. The results showed that mixing the old worn pavement residues with the locally produced emulsion of 3.5% of the total weight of the mixture gives an increase in Marshall stability, Marshall flow and good volumetric properties when mixed at 85 ℃. At 25 ℃ the mechanical and volumetric properties are optimal in a curing period of 28 days. When the mixture is made at a temperature of 160 ℃, we get better volumetric and mechanical properties, but they are certainly less environmentally friendly.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132844177","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 : 2021-12-30DOI: 10.52113/3/eng/mjet/2021-09-02/09-16
Seror Manea Bahloo
The suggested effort is an endeavor to regulate the speed of the car using computer software that allows the owner to obtain information about the driver’s position, speed, and activities. To do this, the system must be able to send data in real time. The widespread accessibility of GPS-enabled instruments, as well as the enormous quantities of data collected from them, allows us to get a perfect understanding of the condition of traffic and the road network. The current study was prompted through a sample of “T-Drive GPS” trajectory data made public by Microsoft Research in 2010. The final objective was to estimate the average speeds of the road sections using the supplied trajectory data and therefore obtain a speed overview of the road network. The corrected sensor data are used by Driving Sense to detect three types of hazardous behaviors: uncontrolled speed, driving irregularly and shifting the directions. We test the efficacy of our system in real-world scenarios. Driving Sense can identify the convert of directions through driving and anomalous speed control with 93.95 percent accuracy and 90.54 percent recall, correspondingly, according to the findings. Furthermore, the speed estimate mistake is within an acceptable range of less than 2.1 m/s.
{"title":"Watching vehicle speed using GPS by using data mining approach","authors":"Seror Manea Bahloo","doi":"10.52113/3/eng/mjet/2021-09-02/09-16","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2021-09-02/09-16","url":null,"abstract":"The suggested effort is an endeavor to regulate the speed of the car using computer software that allows the owner to obtain information about the driver’s position, speed, and activities. To do this, the system must be able to send data in real time. The widespread accessibility of GPS-enabled instruments, as well as the enormous quantities of data collected from them, allows us to get a perfect understanding of the condition of traffic and the road network. The current study was prompted through a sample of “T-Drive GPS” trajectory data made public by Microsoft Research in 2010. The final objective was to estimate the average speeds of the road sections using the supplied trajectory data and therefore obtain a speed overview of the road network. The corrected sensor data are used by Driving Sense to detect three types of hazardous behaviors: uncontrolled speed, driving irregularly and shifting the directions. We test the efficacy of our system in real-world scenarios. Driving Sense can identify the convert of directions through driving and anomalous speed control with 93.95 percent accuracy and 90.54 percent recall, correspondingly, according to the findings. Furthermore, the speed estimate mistake is within an acceptable range of less than 2.1 m/s.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130455151","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 : 2021-06-28DOI: 10.52113/3/mjet/2021-9-1/20-24
Shyamaa A. Mohammed, Sundus S. Al-Azawiey, A. Ali
This paper was aimed to examine the removal of oil from water by photocatalytic advance oxidation under solar light. A pH of 11 has shown a higher oil removal efficiency. Oil remove efficiency levels at pH 11 have been found 75% within 230 minutes’ oily water effluent, studies have shown that Langmuir isotherm has been the best-fit one of the isotherms for the removal of oil. Data have shown a higher adsorptive capacity. Also we have studied another parameter like (catalyst concentration, initial oil concentration and pH). While the treatment of waste-water is dependent upon a great level of quality for the processed industrial water, the nature of wastes that are added throughout the utilization, and the treatment degree that has been received by the waste-water. Then, the data of the waste-water quality that has been measured rou-tinely and it was reported at the plants of the waste-water treatments are mainly for disposal of the treated effluent or the necessities of the discharge in terms of the gross pollution parameters.
{"title":"Treatment of Organic Compounds Resulting from Oil Refineries under Solar Light and Reuse it for Industrial Purpose","authors":"Shyamaa A. Mohammed, Sundus S. Al-Azawiey, A. Ali","doi":"10.52113/3/mjet/2021-9-1/20-24","DOIUrl":"https://doi.org/10.52113/3/mjet/2021-9-1/20-24","url":null,"abstract":"This paper was aimed to examine the removal of oil from water by photocatalytic advance oxidation under solar light. A pH of 11 has shown a higher oil removal efficiency. Oil remove efficiency levels at pH 11 have been found 75% within 230 minutes’ oily water effluent, studies have shown that Langmuir isotherm has been the best-fit one of the isotherms for the removal of oil. Data have shown a higher adsorptive capacity. Also we have studied another parameter like (catalyst concentration, initial oil concentration and pH). While the treatment of waste-water is dependent upon a great level of quality for the processed industrial water, the nature of wastes that are added throughout the utilization, and the treatment degree that has been received by the waste-water. Then, the data of the waste-water quality that has been measured rou-tinely and it was reported at the plants of the waste-water treatments are mainly for disposal of the treated effluent or the necessities of the discharge in terms of the gross pollution parameters.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128051779","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 : 2021-06-19DOI: 10.52113/3/mjet/2021-9-1/06-19
Jinan H. M. AlAnbaky, Hadeel S. R. Al-mur'ib
Previous knowledge has shown a concept revealing different boundaries and relations of building spaces with its outer shell; which represent the boundaries of these spaces. This concept is called interstitial space which is based on creating an interlocution and communication within this space giving a new understanding of meaning and a new approach in archi-tectural formation. This concept of knowledge description has varied as it is linked once to its nature or again to the built environment levels whether it's architectural or urban diverged within the academic and social context, as well as the blur-ring relationship nature of this space with the structural system of the building. Therefore, the problem state of this research, which goal focuses on, is highlighted as "the urge to investigate the concept of interstitial structure characteristics". Yet the methodology of the research is based on the descriptive and analytical approach consisting of three phases; phases one is to build a theoretical framework about the characteristics of the interstitial space in architecture; second is to conduct a practical study and identify several samples of buildings vary in their structural systems (traditional, structural and space); then analyze data and identify the conclusions of which the interstitial space grows and expands physically and expres-sively with the presence of the recent constructive systems and the lack of presence of the Interstitial spaced has led to spatial differentiation and closed toward inside especially those designed parametrically and reflect it in the other tradi-tional and structural constructive systems.
{"title":"The Interstitial in Structural System in Architecture","authors":"Jinan H. M. AlAnbaky, Hadeel S. R. Al-mur'ib","doi":"10.52113/3/mjet/2021-9-1/06-19","DOIUrl":"https://doi.org/10.52113/3/mjet/2021-9-1/06-19","url":null,"abstract":"Previous knowledge has shown a concept revealing different boundaries and relations of building spaces with its outer shell; which represent the boundaries of these spaces. This concept is called interstitial space which is based on creating an interlocution and communication within this space giving a new understanding of meaning and a new approach in archi-tectural formation. This concept of knowledge description has varied as it is linked once to its nature or again to the built environment levels whether it's architectural or urban diverged within the academic and social context, as well as the blur-ring relationship nature of this space with the structural system of the building. Therefore, the problem state of this research, which goal focuses on, is highlighted as \"the urge to investigate the concept of interstitial structure characteristics\". Yet the methodology of the research is based on the descriptive and analytical approach consisting of three phases; phases one is to build a theoretical framework about the characteristics of the interstitial space in architecture; second is to conduct a practical study and identify several samples of buildings vary in their structural systems (traditional, structural and space); then analyze data and identify the conclusions of which the interstitial space grows and expands physically and expres-sively with the presence of the recent constructive systems and the lack of presence of the Interstitial spaced has led to spatial differentiation and closed toward inside especially those designed parametrically and reflect it in the other tradi-tional and structural constructive systems.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"08 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127221836","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 : 2021-06-19DOI: 10.52113/3/mjet/2021-9-1/01-05
Dawood Zahi Khutar
Distance learning is something really familiar nowadays. In the past few years, our world has witnessed a massive revolu-tion in the world of information technology and provided simple ways to obtain information at reasonable prices. Today, sharing information is an integral part of every person's life. Devices such as phones, tablets, and smartphones have be-come the main focus of digital life. With technological progress, electronic devices go through stages of software develop-ment that allow them to perform additional, more complex tasks, and process a larger flow of information. Almost every-one between the ages of 10 and 60 owns a mobile device. So mobile apps are always up to date. Therefore, it is quite logi-cal to use the mobile application as an auxiliary element in the educational system, especially as it provides many services such as accessing the Internet, browsing the web, sending e-mails, exchanging multimedia messages and files and provid-ing instant messaging applications with audio and video. Focusing on employing technology in education and its curricula, regardless of its level, is considered very important. This work diagnoses what users prefer when using the e-learning appli-cation through a questionnaire distributed to a group of university students to collect data on their preferences regarding mobile applications for e-learning.
{"title":"The effect of mobile application programming on the educational process","authors":"Dawood Zahi Khutar","doi":"10.52113/3/mjet/2021-9-1/01-05","DOIUrl":"https://doi.org/10.52113/3/mjet/2021-9-1/01-05","url":null,"abstract":"Distance learning is something really familiar nowadays. In the past few years, our world has witnessed a massive revolu-tion in the world of information technology and provided simple ways to obtain information at reasonable prices. Today, sharing information is an integral part of every person's life. Devices such as phones, tablets, and smartphones have be-come the main focus of digital life. With technological progress, electronic devices go through stages of software develop-ment that allow them to perform additional, more complex tasks, and process a larger flow of information. Almost every-one between the ages of 10 and 60 owns a mobile device. So mobile apps are always up to date. Therefore, it is quite logi-cal to use the mobile application as an auxiliary element in the educational system, especially as it provides many services such as accessing the Internet, browsing the web, sending e-mails, exchanging multimedia messages and files and provid-ing instant messaging applications with audio and video. Focusing on employing technology in education and its curricula, regardless of its level, is considered very important. This work diagnoses what users prefer when using the e-learning appli-cation through a questionnaire distributed to a group of university students to collect data on their preferences regarding mobile applications for e-learning.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127806567","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 : 2019-12-30DOI: 10.52113/3/eng/mjet/2019-07-02/71-81
Gufran A. Hassana, J. A. Hassan
A nanoantenna is designed to transform high frequency into energy. The proposed antenna is made of aluminuim. are shaped with a pair of nanoparticles brought in close nearness. Antennas separated by small gaps printed on a Si layer, which is designed as a flat-edge bowtie, with a ground plane at the under most of the substrate with a feeding putting in the gap of the bowtie antenna. The proposed antenna is designed using 3D-electromagnetic solver (CST) programs and analysed for the optimisation of metal thickness, gap size, and geometrical length. Simulations are conducted to investigate the behaviour of the nanoantenna illuminated by the linearly polarized plane wave. The nanoantenna parameters such as substrate thickness, feeding size, feeding type, and feeding material were changed to select the most efficient nanoantenna with a large directivity in our reaserch find the nanoantenna make a high electric field enhancement in their gap region. This specialty can be employed for SERS or biosensing to improve the detection limit and measure the presence of single molecules. For this, it is necessary to create antennas with enough small gaps, to be capable to recompense for the defects created during the fabrication process and reach antenna characteristics that are close to the ones presage by simulations. The numerical simulations are studied to improve the best E-field of the antenna within the 250–700 THz frequency range. The proposed antenna offers multiple-resonance frequencies and good return loss in the frequency band of 310 THz, as well as an output electric field of 5.48 v/m to 7.8 v/m. Upon changing the type of feeding in the gap (without feeding, air feeding, dielectric silicon, or feeding), and we find that when using the air between the gap, the S-parameter is (-12.9) dB at the resonance frequency of (531.3) THz and the directivity is 7.41 dB at 666 THz incident frequency.
{"title":"Enhancement of electric field of bowtie nanoantenna","authors":"Gufran A. Hassana, J. A. Hassan","doi":"10.52113/3/eng/mjet/2019-07-02/71-81","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2019-07-02/71-81","url":null,"abstract":"A nanoantenna is designed to transform high frequency into energy. The proposed antenna is made of aluminuim. are shaped with a pair of nanoparticles brought in close nearness. Antennas separated by small gaps printed on a Si layer, which is designed as a flat-edge bowtie, with a ground plane at the under most of the substrate with a feeding putting in the gap of the bowtie antenna. The proposed antenna is designed using 3D-electromagnetic solver (CST) programs and analysed for the optimisation of metal thickness, gap size, and geometrical length. Simulations are conducted to investigate the behaviour of the nanoantenna illuminated by the linearly polarized plane wave. The nanoantenna parameters such as substrate thickness, feeding size, feeding type, and feeding material were changed to select the most efficient nanoantenna with a large directivity in our reaserch find the nanoantenna make a high electric field enhancement in their gap region. This specialty can be employed for SERS or biosensing to improve the detection limit and measure the presence of single molecules. For this, it is necessary to create antennas with enough small gaps, to be capable to recompense for the defects created during the fabrication process and reach antenna characteristics that are close to the ones presage by simulations. The numerical simulations are studied to improve the best E-field of the antenna within the 250–700 THz frequency range. The proposed antenna offers multiple-resonance frequencies and good return loss in the frequency band of 310 THz, as well as an output electric field of 5.48 v/m to 7.8 v/m. Upon changing the type of feeding in the gap (without feeding, air feeding, dielectric silicon, or feeding), and we find that when using the air between the gap, the S-parameter is (-12.9) dB at the resonance frequency of (531.3) THz and the directivity is 7.41 dB at 666 THz incident frequency.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"311 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133305626","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 : 2019-10-06DOI: 10.52113/3/mjet/2019-7-1/57-64
Hussam S. O. Aldelphi
"This paper addresses of urban visual quality at Traditional Kut City Center as an important part of urban life concept. Where most of the traditional city centers suffer from unorganized interventions and urban disruption, affecting the identity and future of the city and its quality of urban life. To achieve the objectives of this paper, the study area was divided into three main areas: the river side, the middle part, and the part overlooking the residential units. A quantitative analysis of the city center (the three parts) was prepared and analyzed using the SWAT method. A questionnaire was prepared and answered by a group of experts with expertise and specialization in the field of urban design and architecture to answer the set of axes allocated to the questionnaire. The research found that there is a positive correlation between these indicators. The more attention is paid to the visual urban image indicators of the traditional city center, the clearer the urban environment will be, thus increasing the city’s visual value and quality of life. To improve the urban visual quality at Traditional Kut City Center, the research considers the need to attention of three vertical indicators, and look at to urban sustainability as an important part of enhancing the visual quality of the city center, where sustainability works with visual quality first by determining the standards of construction and urban intervention of The traditional city of Kut, And secondly, the morphological formation of the traditional center which is the main factor in the concept of enhancing the visual quality of urban centers in the cities."
{"title":"Urban Visual Quality Of Traditional Kut City Center","authors":"Hussam S. O. Aldelphi","doi":"10.52113/3/mjet/2019-7-1/57-64","DOIUrl":"https://doi.org/10.52113/3/mjet/2019-7-1/57-64","url":null,"abstract":"\"This paper addresses of urban visual quality at Traditional Kut City Center as an important part of urban life concept. Where most of the traditional city centers suffer from unorganized interventions and urban disruption, affecting the identity and future of the city and its quality of urban life. To achieve the objectives of this paper, the study area was divided into three main areas: the river side, the middle part, and the part overlooking the residential units. A quantitative analysis of the city center (the three parts) was prepared and analyzed using the SWAT method. A questionnaire was prepared and answered by a group of experts with expertise and specialization in the field of urban design and architecture to answer the set of axes allocated to the questionnaire. The research found that there is a positive correlation between these indicators. The more attention is paid to the visual urban image indicators of the traditional city center, the clearer the urban environment will be, thus increasing the city’s visual value and quality of life. To improve the urban visual quality at Traditional Kut City Center, the research considers the need to attention of three vertical indicators, and look at to urban sustainability as an important part of enhancing the visual quality of the city center, where sustainability works with visual quality first by determining the standards of construction and urban intervention of The traditional city of Kut, And secondly, the morphological formation of the traditional center which is the main factor in the concept of enhancing the visual quality of urban centers in the cities.\"","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115715458","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 : 2019-06-30DOI: 10.52113/3/eng/mjet/2019-07-01/10-22
Zahraa Abbas Khaduier, M. Abdulla
This paper presents the results of a study to have better understanding of structural behavior of the reinforced concrete (RC) column wrapped by carbon fiber reinforced polymer (CFRP) sheets. In this study, three dimensional finite element models have been presented using ANSYS computer program (Release 16.0) to analyze reinforced concrete columns strengthened with CFRP composites , to evaluate the gain in performance (strength and ductility) due to strengthening, and to study the effect of the most important parameters such as: compressive strength of concrete, modulus of elasticity of CFRP and fiber orientations . Three dimensional eight-node brick element (SOLID65) was used to represent the concrete, and three dimensional spar element (LINK180) was used to represent the steel and three dimensional shell element (SHELL41) was used to represent the CFRP composites. The present study has a comparison between the analytical results from the ANSYS finite element analysis with experimental data. The results of the study show that, external bonded CFRP sheets are very effective in enhancing the axial strength and ductility of the concrete columns. Inspection of the results shows that, there is good agreement between the ANSYS and the experimental test results.
{"title":"Nonlinear Finite Elements Analysis of Circular Reinforced Concrete Columns Strengthened With Carbon Fiber Reinforced Polymer (CFRP)","authors":"Zahraa Abbas Khaduier, M. Abdulla","doi":"10.52113/3/eng/mjet/2019-07-01/10-22","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2019-07-01/10-22","url":null,"abstract":"This paper presents the results of a study to have better understanding of structural behavior of the reinforced concrete (RC) column wrapped by carbon fiber reinforced polymer (CFRP) sheets. In this study, three dimensional finite element models have been presented using ANSYS computer program (Release 16.0) to analyze reinforced concrete columns strengthened with CFRP composites , to evaluate the gain in performance (strength and ductility) due to strengthening, and to study the effect of the most important parameters such as: compressive strength of concrete, modulus of elasticity of CFRP and fiber orientations . Three dimensional eight-node brick element (SOLID65) was used to represent the concrete, and three dimensional spar element (LINK180) was used to represent the steel and three dimensional shell element (SHELL41) was used to represent the CFRP composites. The present study has a comparison between the analytical results from the ANSYS finite element analysis with experimental data. The results of the study show that, external bonded CFRP sheets are very effective in enhancing the axial strength and ductility of the concrete columns. Inspection of the results shows that, there is good agreement between the ANSYS and the experimental test results.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128321612","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 : 2019-05-12DOI: 10.52113/3/mjet/2019-7-2/90-100
Jenan H. Hemeidan, A. Abbar
The simultaneous removal of copper and cadmium from a simulated wastewater using rotating tubular packed bed of woven screens electrode was investigated. The effect of weight present of each metal on the removal efficiency and current efficiency was studied. The experiments were carried out at current 1.5 A, rotation speed 450 rpm, pH=2, and total concentration of metals (300 ppm) at different weight percent of each metal. The results showed that the removal efficiency of copper increased from 93.5 % to 99.33% as its weight percent increased from 20% to100%. In a similar fashion, the removal efficiency of cadmium increased from 80% to 90% as its weight percent increased from 20% to100 %. The results confirmed that the removal efficiency of any metals decreased in the presence of other metal. The results established that current efficiency for the simultaneous removal of copper and cadmium decreased with increasing of electrolysis time and Cd percent weight or decreasing of Cu weight percent. Current efficiency is higher at the initial stage of electrolysis and then declined with increasing time for all weight percent of metals.
{"title":"Practical study on the electrochemical simultaneous removal of copper and cadmium from simulated wastewater using rotating tubular packed bed cathode","authors":"Jenan H. Hemeidan, A. Abbar","doi":"10.52113/3/mjet/2019-7-2/90-100","DOIUrl":"https://doi.org/10.52113/3/mjet/2019-7-2/90-100","url":null,"abstract":"The simultaneous removal of copper and cadmium from a simulated wastewater using rotating tubular packed bed of woven screens electrode was investigated. The effect of weight present of each metal on the removal efficiency and current efficiency was studied. The experiments were carried out at current 1.5 A, rotation speed 450 rpm, pH=2, and total concentration of metals (300 ppm) at different weight percent of each metal. The results showed that the removal efficiency of copper increased from 93.5 % to 99.33% as its weight percent increased from 20% to100%. In a similar fashion, the removal efficiency of cadmium increased from 80% to 90% as its weight percent increased from 20% to100 %. The results confirmed that the removal efficiency of any metals decreased in the presence of other metal. The results established that current efficiency for the simultaneous removal of copper and cadmium decreased with increasing of electrolysis time and Cd percent weight or decreasing of Cu weight percent. Current efficiency is higher at the initial stage of electrolysis and then declined with increasing time for all weight percent of metals.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124974461","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 : 2019-05-12DOI: 10.52113/3/mjet/2019-7-2/82-89
H. Ibrahim, M. Mahdi, B. H. Hashim
This study aims to progress brittleness of the high strength lightweight aggregate concrete (HSLWAC) by using Porcelinite stone as light weight aggregates and silica fume with water cement ratio 0.28 to give 41.34 MPa compressive strength at 28-days and reinforced with carbon fibers. Fifteen mixtures using in this work with three various lengths of (5mm, 10mm, and 20mm), five mixes for every length with volume fractions (0.25%, 0.5%, 1.0%, 1.5%, and 2%) of carbon fibers. The slump test, compression strength, flexural strength, splitting tensile strength, and modulus of elasticity were investigated to determine the mechanical properties of (HSLWAC). The density of reference (HSLWAC) that was get through the experimental work was (1835 Kg/m3) at (28) days. The results shown that at general, the brittleness of (HSLWAC) improved with increased the content and length of carbon fibers, The optimum properties was for mix (L5) of 20mm length and 2% of carbon fibers of 45.44 MPa, 3.21MPa ,and 6.97MPa for compression strength, flexural strength, splitting tensile strength respectively.
{"title":"Efficiency Development of Light Weight High Strength Concrete by using Carbon Fibers.","authors":"H. Ibrahim, M. Mahdi, B. H. Hashim","doi":"10.52113/3/mjet/2019-7-2/82-89","DOIUrl":"https://doi.org/10.52113/3/mjet/2019-7-2/82-89","url":null,"abstract":"This study aims to progress brittleness of the high strength lightweight aggregate concrete (HSLWAC) by using Porcelinite stone as light weight aggregates and silica fume with water cement ratio 0.28 to give 41.34 MPa compressive strength at 28-days and reinforced with carbon fibers. Fifteen mixtures using in this work with three various lengths of (5mm, 10mm, and 20mm), five mixes for every length with volume fractions (0.25%, 0.5%, 1.0%, 1.5%, and 2%) of carbon fibers. The slump test, compression strength, flexural strength, splitting tensile strength, and modulus of elasticity were investigated to determine the mechanical properties of (HSLWAC). The density of reference (HSLWAC) that was get through the experimental work was (1835 Kg/m3) at (28) days. The results shown that at general, the brittleness of (HSLWAC) improved with increased the content and length of carbon fibers, The optimum properties was for mix (L5) of 20mm length and 2% of carbon fibers of 45.44 MPa, 3.21MPa ,and 6.97MPa for compression strength, flexural strength, splitting tensile strength respectively.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":"327 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122333151","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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