Pub Date : 2024-04-05DOI: 10.9734/jerr/2024/v26i51137
Baoen Tong
With the rapid development of the power grid industry, the traditional manual inspection method is gradually being replaced by intelligent robot technology, which has been widely concerned around the world. The research of inspection robots aims to improve the efficiency and safety of transmission line inspection, while reducing labor costs and quickly identifying potential risks. The obstacle crossing mechanism of inspection robot is the core part of normal inspection of robot. This paper analyzes the obstacle crossing mechanism of inspection robot developed at home and abroad, summarizes the types and characteristics of the obstacle crossing mechanism, and finally puts forward the development trend of the obstacle crossing mechanism of inspection robot
{"title":"Research Status and Development Trend of Obstacle Crossing Mechanism of HV Transmission Line Inspection Robot","authors":"Baoen Tong","doi":"10.9734/jerr/2024/v26i51137","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51137","url":null,"abstract":"With the rapid development of the power grid industry, the traditional manual inspection method is gradually being replaced by intelligent robot technology, which has been widely concerned around the world. The research of inspection robots aims to improve the efficiency and safety of transmission line inspection, while reducing labor costs and quickly identifying potential risks. The obstacle crossing mechanism of inspection robot is the core part of normal inspection of robot. This paper analyzes the obstacle crossing mechanism of inspection robot developed at home and abroad, summarizes the types and characteristics of the obstacle crossing mechanism, and finally puts forward the development trend of the obstacle crossing mechanism of inspection robot","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"21 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738299","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 : 2024-04-04DOI: 10.9734/jerr/2024/v26i51136
Mingxu Li, Zhiyao Gao
The analysis of longitudinal shear resistance based on shear capacity is the basis for assessing the reliability of steel-concrete joint structures. It is of great significance for the longitudinal shear of bridge structures and even for the establishment of a shear-resistant design code for steel-concrete bridge structures based on reliability theory. In this article, a more comprehensive overview of the test methods, the current state of research, and the remaining problems in the field of connectors for perfobond rib shear connectors (PBL) are presented. Firstly, the test methods for PBL connectors are categorized. The applicable characteristics of each test method and their advantages and disadvantages are summarized, and the research progress on the calculation of shear load-capacity in this structure is discussed in detail. Finally, it is concluded that the international research on the shear capacity of PBL connectors is still at a stage where the scope of their adaptation is small. Reasonable and accurate quantification of the sensitivity parameters of the PBL connectors was studied. The normality of the test form and other relevant factors should be taken into account to establish a set of more effective shear capacity calculation methods. This can be used to guide the shear capacity design of the structure more directly.
{"title":"Summary of the Calculation of the Shear Capacity of Perfobond Rib Shear Connectors","authors":"Mingxu Li, Zhiyao Gao","doi":"10.9734/jerr/2024/v26i51136","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51136","url":null,"abstract":"The analysis of longitudinal shear resistance based on shear capacity is the basis for assessing the reliability of steel-concrete joint structures. It is of great significance for the longitudinal shear of bridge structures and even for the establishment of a shear-resistant design code for steel-concrete bridge structures based on reliability theory. In this article, a more comprehensive overview of the test methods, the current state of research, and the remaining problems in the field of connectors for perfobond rib shear connectors (PBL) are presented. Firstly, the test methods for PBL connectors are categorized. The applicable characteristics of each test method and their advantages and disadvantages are summarized, and the research progress on the calculation of shear load-capacity in this structure is discussed in detail. Finally, it is concluded that the international research on the shear capacity of PBL connectors is still at a stage where the scope of their adaptation is small. Reasonable and accurate quantification of the sensitivity parameters of the PBL connectors was studied. The normality of the test form and other relevant factors should be taken into account to establish a set of more effective shear capacity calculation methods. This can be used to guide the shear capacity design of the structure more directly.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"21 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140741585","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 : 2024-04-03DOI: 10.9734/jerr/2024/v26i51135
Qingzheng Wang, Bin Li, Xixi Zhu
Underwater image enhancement faces variety of challenges owing to the diversity of underwater scenes (viewed as water types) and the rich multi-frequency information. To deal with these challenges, this paper proposes a multi-feature learning adaptive underwater image enhancement network comprising an adaptive module and a dual-layer synchronous enhancement network. First, we design an adaptive module which enables the determination of water type inside the model and eliminates the negative effect of water type diversity by building water type related features. Then, the model learns high-frequency and low-frequency features through a dual-layer synchronous enhancement network to extract more comprehensive information. Finally, the outputs of the dual-layer network are merged to obtain more realistic underwater enhanced images. Numerous experiments have shown that the proposed method outperforms the comparison method for visual perception and assessment metrics.
{"title":"Multi-feature Learning Adaptive Network for Underwater Image Enhancement","authors":"Qingzheng Wang, Bin Li, Xixi Zhu","doi":"10.9734/jerr/2024/v26i51135","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51135","url":null,"abstract":"Underwater image enhancement faces variety of challenges owing to the diversity of underwater scenes (viewed as water types) and the rich multi-frequency information. To deal with these challenges, this paper proposes a multi-feature learning adaptive underwater image enhancement network comprising an adaptive module and a dual-layer synchronous enhancement network. First, we design an adaptive module which enables the determination of water type inside the model and eliminates the negative effect of water type diversity by building water type related features. Then, the model learns high-frequency and low-frequency features through a dual-layer synchronous enhancement network to extract more comprehensive information. Finally, the outputs of the dual-layer network are merged to obtain more realistic underwater enhanced images. Numerous experiments have shown that the proposed method outperforms the comparison method for visual perception and assessment metrics.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"93 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748851","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 : 2024-04-01DOI: 10.9734/jerr/2024/v26i51132
Samuel Ogidi, Mistura Yusuf, Khadijah Sanni, D. Andrea, Abdullahi Abdulsalam
Produced water, which contains a high amount of hydrocarbons, heavy metals, and other pollutants, is one of the major waste streams in the Niger Delta's oilfields and refineries. The treatment of produced water can be done in a variety of ways, including physical (desalination, membrane separation and, adsorption), chemical (precipitation, absorption and, oxidation), and biological. The heavy metals and contaminants in the wastewater pose a threat to living creatures and the environment. This research evaluates the effectiveness of Activated carbon modified with Graphene oxide, a new thriving material for researchers derived from graphite, to improve the adsorption capacity of coconut husk using the “wet impregnation technique” for the removal of heavy metals from produced water. Batch adsorption of the pollutant was studied for the Activated Carbon, and the modified activated carbon (AC-GO) at a time intervals, for each of the adsorbents. The removal efficiency of the adsorbent was found to increase proportionately from 6.71% to 92.96%, 3.01% to 52.23% and 51.28% to 67.77% for Cd, Ni and Pb respectively with increasing contact time. Atomic absorption spectroscopy (AAS) analysed the treated produced water samples. The adsorption isotherms and kinetics studies of the adsorbed metals were evaluated and correlated with empirical models.
{"title":"Removal of Heavy Metals from Produced Water Using Activated Carbon from Coconut Husk Enhanced with Graphene Oxide","authors":"Samuel Ogidi, Mistura Yusuf, Khadijah Sanni, D. Andrea, Abdullahi Abdulsalam","doi":"10.9734/jerr/2024/v26i51132","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51132","url":null,"abstract":"Produced water, which contains a high amount of hydrocarbons, heavy metals, and other pollutants, is one of the major waste streams in the Niger Delta's oilfields and refineries. The treatment of produced water can be done in a variety of ways, including physical (desalination, membrane separation and, adsorption), chemical (precipitation, absorption and, oxidation), and biological. The heavy metals and contaminants in the wastewater pose a threat to living creatures and the environment. This research evaluates the effectiveness of Activated carbon modified with Graphene oxide, a new thriving material for researchers derived from graphite, to improve the adsorption capacity of coconut husk using the “wet impregnation technique” for the removal of heavy metals from produced water. Batch adsorption of the pollutant was studied for the Activated Carbon, and the modified activated carbon (AC-GO) at a time intervals, for each of the adsorbents. The removal efficiency of the adsorbent was found to increase proportionately from 6.71% to 92.96%, 3.01% to 52.23% and 51.28% to 67.77% for Cd, Ni and Pb respectively with increasing contact time. Atomic absorption spectroscopy (AAS) analysed the treated produced water samples. The adsorption isotherms and kinetics studies of the adsorbed metals were evaluated and correlated with empirical models.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"1167 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140774089","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 : 2024-04-01DOI: 10.9734/jerr/2024/v26i51133
Jiayu Duan, He Yang, Xiaobo Chen
As a non-destructive testing method, acoustic emission technology can be used to detect the internal damage of concrete specimens in the process of stress. Geopolymer concrete is expected to replace cement as a new generation of green building material because of its outstanding features of low carbon emission and low energy consumption while utilizing industrial solid waste. And with the increasing amount of concrete, due to the mining of sand and gravel aggregate caused by environmental damage and resource depletion has become increasingly serious. In this paper, acoustic emission technology is used to detect the damage of geopolymer recycled concrete during bending and pull-out tests. The results show that the acoustic emission energy distribution map can well reflect the characteristics of load rising and falling stages, it can provide a reference for related research.
{"title":"The Acoustic Emission Characterization of Mechanical Damage of Geopolymer Recycled Concrete","authors":"Jiayu Duan, He Yang, Xiaobo Chen","doi":"10.9734/jerr/2024/v26i51133","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51133","url":null,"abstract":"As a non-destructive testing method, acoustic emission technology can be used to detect the internal damage of concrete specimens in the process of stress. Geopolymer concrete is expected to replace cement as a new generation of green building material because of its outstanding features of low carbon emission and low energy consumption while utilizing industrial solid waste. And with the increasing amount of concrete, due to the mining of sand and gravel aggregate caused by environmental damage and resource depletion has become increasingly serious. In this paper, acoustic emission technology is used to detect the damage of geopolymer recycled concrete during bending and pull-out tests. The results show that the acoustic emission energy distribution map can well reflect the characteristics of load rising and falling stages, it can provide a reference for related research.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"229 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140783403","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 : 2024-04-01DOI: 10.9734/jerr/2024/v26i51134
Debashon Chakraborty, Md. Maruf Rahman, Zihad Hasan Joy, Md. Ashikul Islam, Abu Shufian, Protik Parvez Sheikh, S. Alam
The advent of Radio Frequency Identification (RFID) technology has ushered in a new paradigm in the domain of automated attendance systems, offering a sophisticated yet user-friendly approach to personnel management. This paper presents a comprehensive study on the design and deployment of an RFID-based attendance system powered by the versatile Arduino platform, elucidating its operational tenets, system architecture, and practical implementations. At the heart of the system lies the MFRC522 RFID reader, which synergizes with an Arduino microcontroller to facilitate the identification and logging of attendance data. The system is enhanced by the inclusion of an SD Card Module for data storage and a Real-Time Clock (RTC) Module to ensure accurate timestamping of attendance events. The seamless integration of these components results in a robust mechanism that not only simplifies the attendance tracking process but also fortifies the security framework by leveraging unique identifiers for each user. The study spans the detailed process of assembling the hardware, crafting the software in the Arduino Integrated Development Environment (IDE), and meticulously testing the integrated system to affirm its efficacy. The resulting attendance system embodies a significant stride towards refining attendance management practices, eliminating the shortcomings of manual tracking while providing a scalable and reliable solution adaptable to various organizational settings.
{"title":"Enhanced Security and Efficiency in Attendance Management: A Novel RFID and Arduino Integrated System","authors":"Debashon Chakraborty, Md. Maruf Rahman, Zihad Hasan Joy, Md. Ashikul Islam, Abu Shufian, Protik Parvez Sheikh, S. Alam","doi":"10.9734/jerr/2024/v26i51134","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51134","url":null,"abstract":"The advent of Radio Frequency Identification (RFID) technology has ushered in a new paradigm in the domain of automated attendance systems, offering a sophisticated yet user-friendly approach to personnel management. This paper presents a comprehensive study on the design and deployment of an RFID-based attendance system powered by the versatile Arduino platform, elucidating its operational tenets, system architecture, and practical implementations. At the heart of the system lies the MFRC522 RFID reader, which synergizes with an Arduino microcontroller to facilitate the identification and logging of attendance data. The system is enhanced by the inclusion of an SD Card Module for data storage and a Real-Time Clock (RTC) Module to ensure accurate timestamping of attendance events. The seamless integration of these components results in a robust mechanism that not only simplifies the attendance tracking process but also fortifies the security framework by leveraging unique identifiers for each user. The study spans the detailed process of assembling the hardware, crafting the software in the Arduino Integrated Development Environment (IDE), and meticulously testing the integrated system to affirm its efficacy. The resulting attendance system embodies a significant stride towards refining attendance management practices, eliminating the shortcomings of manual tracking while providing a scalable and reliable solution adaptable to various organizational settings.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"29 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140772225","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 : 2024-03-30DOI: 10.9734/jerr/2024/v26i51129
Koyenikan, O.O., Filani, A.O.
An existing mechanical rice de-stoner was modified for the purpose of improving its efficiency. Some challenges were discovered with the performance of the existing machine that did not make it to perform effectively. The spring, cushion rubber, coil, capacitor, cable and plug were incorporated to modify the existing mechanical rice de-stoner. After modification of the machine, performance evaluation was carried out. A total of 6 kg of threshed rice sample was mixed with stones sized 2.36mm and was divided into three parts of 1.5kg, 2.0kg and 2.5kg and labelled A, B and C respectively. Each part was fed at different times into the rice de-stoner and de-stoned. Also, 200g of the threshed rice were taken for hand-picked which served as the control for separating and other foreign materials from the rice. This was used to compare the result of the efficiency of the machine. The efficiency of the handpicked method was determined to be 80% while that of the modified de-stoner was determined to be 66.7%, 60% and 64% respectively. Thus the performance evaluation of the mechanical rice de-stoner was rated above average but not as effective as the hand-picked method. Also, the machine`s throughput capacity was 13.60 kg/hr, 15.38 kg/hr and 15.38 kg/hr for the feed rates of 1.5kg, 2.0kg and 2.5kg respectively.. Thus, the modified mechanical rice de-stoner machine was to be used as a template for other new rice de-stoner to be constructed.
{"title":"Modification and Performance Evaluation of an Existing Prototype Mechanical Rice De-stoner","authors":"Koyenikan, O.O., Filani, A.O.","doi":"10.9734/jerr/2024/v26i51129","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51129","url":null,"abstract":"An existing mechanical rice de-stoner was modified for the purpose of improving its efficiency. Some challenges were discovered with the performance of the existing machine that did not make it to perform effectively. The spring, cushion rubber, coil, capacitor, cable and plug were incorporated to modify the existing mechanical rice de-stoner. After modification of the machine, performance evaluation was carried out. A total of 6 kg of threshed rice sample was mixed with stones sized 2.36mm and was divided into three parts of 1.5kg, 2.0kg and 2.5kg and labelled A, B and C respectively. Each part was fed at different times into the rice de-stoner and de-stoned. Also, 200g of the threshed rice were taken for hand-picked which served as the control for separating and other foreign materials from the rice. This was used to compare the result of the efficiency of the machine. The efficiency of the handpicked method was determined to be 80% while that of the modified de-stoner was determined to be 66.7%, 60% and 64% respectively. Thus the performance evaluation of the mechanical rice de-stoner was rated above average but not as effective as the hand-picked method. Also, the machine`s throughput capacity was 13.60 kg/hr, 15.38 kg/hr and 15.38 kg/hr for the feed rates of 1.5kg, 2.0kg and 2.5kg respectively.. Thus, the modified mechanical rice de-stoner machine was to be used as a template for other new rice de-stoner to be constructed.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"46 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364000","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 : 2024-03-30DOI: 10.9734/jerr/2024/v26i51131
Aryan Gupta, Meera Patel
Dynamic system monitoring is essential for ensuring the optimal performance and reliability of various systems across multiple domains. This Abstract introduces innovative approaches focusing on signal processing and parameter estimation strategies for dynamic system monitoring. Signal processing techniques such as wavelet transform and adaptive filtering are utilized for noise reduction and feature extraction from sensor data. Additionally, parameter estimation strategies including Kalman filtering and Bayesian inference aid in accurately estimating system parameters and states in real-time. These advanced methods, integrating machine learning and statistical inference, promise enhanced monitoring capabilities, facilitating proactive maintenance and fault detection in complex dynamic systems. Through case studies and simulation results, the effectiveness and versatility of these approaches in addressing real-world challenges are demonstrated, illustrating their potential for advancing the field of dynamic system monitoring.
{"title":"Innovative Approaches for Dynamic System Monitoring: Signal Processing and Parameter Estimation Strategies","authors":"Aryan Gupta, Meera Patel","doi":"10.9734/jerr/2024/v26i51131","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51131","url":null,"abstract":"Dynamic system monitoring is essential for ensuring the optimal performance and reliability of various systems across multiple domains. This Abstract introduces innovative approaches focusing on signal processing and parameter estimation strategies for dynamic system monitoring. Signal processing techniques such as wavelet transform and adaptive filtering are utilized for noise reduction and feature extraction from sensor data. Additionally, parameter estimation strategies including Kalman filtering and Bayesian inference aid in accurately estimating system parameters and states in real-time. These advanced methods, integrating machine learning and statistical inference, promise enhanced monitoring capabilities, facilitating proactive maintenance and fault detection in complex dynamic systems. Through case studies and simulation results, the effectiveness and versatility of these approaches in addressing real-world challenges are demonstrated, illustrating their potential for advancing the field of dynamic system monitoring.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"20 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364518","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 : 2024-03-30DOI: 10.9734/jerr/2024/v26i51130
Gabriel Essien, Victor E. Etuk, Aniefiok Livinus, Okon, Edet Ita
This paper details the Design of a Cathodic Protection System on the steel casing pipes of the 60m reinforced concrete bridge project in the Niger Delta, Nigeria. Galvanic anode cathodic protection system was provided for the submerged steel support piles on the newly reinforced concrete bridge to ensure adequate corrosion protection of the structures. A total of fifty-six (56) Aluminum Anodes (32 kg) were used. Two of the Aluminum anodes were installed on each of the twenty-eight (28) steel casing piles. The anode installation was achieved by means of clamping at the predetermined water depth of 37.2 m with purpose made carbon steel clamps. The bonding of the anode to the pile structure to make electrical contact was achieved through welding of the pre-installed anode steel core extension bar against the steel pile at the water splash zone area of the river. A pre- and post-installation test and survey activities were conducted on each of the steel piles to ascertain the integrity of the installation and degree of corrosion protection of the steel casing piles. The field test and measurement results indicated mean values of open circuit potential of 0.600 Volts and polarized corrosion potential of 0.850 Volts. The recorded corrosion potential for the installed cathodic protection system confirmed adequate corrosion protection for ten (10) years from anode life for the steel casing supports of the 60 m reinforced concrete bridge.
{"title":"Investigation of a Cathodic Protection Configuration for the Steel Casing Pipes in Reinforced Concrete Bridge in the Niger Delta","authors":"Gabriel Essien, Victor E. Etuk, Aniefiok Livinus, Okon, Edet Ita","doi":"10.9734/jerr/2024/v26i51130","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51130","url":null,"abstract":"This paper details the Design of a Cathodic Protection System on the steel casing pipes of the 60m reinforced concrete bridge project in the Niger Delta, Nigeria. Galvanic anode cathodic protection system was provided for the submerged steel support piles on the newly reinforced concrete bridge to ensure adequate corrosion protection of the structures. A total of fifty-six (56) Aluminum Anodes (32 kg) were used. Two of the Aluminum anodes were installed on each of the twenty-eight (28) steel casing piles. The anode installation was achieved by means of clamping at the predetermined water depth of 37.2 m with purpose made carbon steel clamps. The bonding of the anode to the pile structure to make electrical contact was achieved through welding of the pre-installed anode steel core extension bar against the steel pile at the water splash zone area of the river. A pre- and post-installation test and survey activities were conducted on each of the steel piles to ascertain the integrity of the installation and degree of corrosion protection of the steel casing piles. The field test and measurement results indicated mean values of open circuit potential of 0.600 Volts and polarized corrosion potential of 0.850 Volts. The recorded corrosion potential for the installed cathodic protection system confirmed adequate corrosion protection for ten (10) years from anode life for the steel casing supports of the 60 m reinforced concrete bridge.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"11 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364612","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}
This study presents an experiment on the utilization of rebar waste as a mechanical coupler splice material on the reinforced concrete beam. The purpose of using rebar waste is to save costs in a construction project. Experiments were conducted with 3 test specimens, which are reinforced concrete beam without coupler splice (B-13NC), reinforced concrete beam with 19 mm diameter coupler splice (B-13C19) and reinforced concrete beam with 22 mm coupler splice with welding (B-13C22W). Each coupler splice was installed in the plastic hinge area of the beam to determine the maximum capability of the coupler splice. Tests were conducted under cyclic flexural loading on the reinforced concrete beam. The results showed that the 22 mm diameter coupler splice at B-13C22W has almost the same strength as the reinforced concrete beam without coupler splice (B-13NC). However, the 19 mm diameter coupler splice has a significant decrease in strength, which is more than 30% of the strength of the reinforced concrete beam without a coupler splice (B-13NC). This experiment also shows that the utilization of a coupler splice in the reinforced concrete beams results in a decrease in structural ductility.
{"title":"Experimental Study on Mechanical Coupler Splices in Reinforced Concrete Beams under Cyclic Flexural Loading","authors":"Jafar Aji Pramono, Ashar Saputra, Bambang Supriyadi","doi":"10.9734/jerr/2024/v26i51128","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51128","url":null,"abstract":"This study presents an experiment on the utilization of rebar waste as a mechanical coupler splice material on the reinforced concrete beam. The purpose of using rebar waste is to save costs in a construction project. Experiments were conducted with 3 test specimens, which are reinforced concrete beam without coupler splice (B-13NC), reinforced concrete beam with 19 mm diameter coupler splice (B-13C19) and reinforced concrete beam with 22 mm coupler splice with welding (B-13C22W). Each coupler splice was installed in the plastic hinge area of the beam to determine the maximum capability of the coupler splice. Tests were conducted under cyclic flexural loading on the reinforced concrete beam.\u0000The results showed that the 22 mm diameter coupler splice at B-13C22W has almost the same strength as the reinforced concrete beam without coupler splice (B-13NC). However, the 19 mm diameter coupler splice has a significant decrease in strength, which is more than 30% of the strength of the reinforced concrete beam without a coupler splice (B-13NC). This experiment also shows that the utilization of a coupler splice in the reinforced concrete beams results in a decrease in structural ductility.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"58 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368002","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：