Arabian Journal for Science and Engineering最新文献_第2页

Design of a High Order Dual Band MIMO Antenna with Improved Isolation and Gain for Wireless Communications 为无线通信设计具有改进隔离度和增益的高阶双频多输入多输出天线

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09582-6

Sanjukta Nej, Santosh Kumar Bairappaka, Dinavahi BNVSai Durga Sri Raja Ram, Sukhendu Jana, Anumoy Ghosh

{"title":"Design of a High Order Dual Band MIMO Antenna with Improved Isolation and Gain for Wireless Communications","authors":"Sanjukta Nej, Santosh Kumar Bairappaka, Dinavahi BNVSai Durga Sri Raja Ram, Sukhendu Jana, Anumoy Ghosh","doi":"10.1007/s13369-024-09582-6","DOIUrl":"https://doi.org/10.1007/s13369-024-09582-6","url":null,"abstract":"An 8-elements dual band multiple-input multiple-output (MIMO) antenna is proposed in this article. The single element antenna consists of a defected ground structure (DGS) to obtain the first resonance at 2.4 GHz (Wi-Fi) and inset fed patch is responsible for second resonance at 3.6 GHz (Wi-MAX). As the single antenna is extended for 8-elements MIMO arrangement in a compact layout, the |S11| deteriorates which improved by engraving additional I-shaped DGS slots that enhances the impedance matching at the antenna ports. Due to closely placed antenna elements the mutual coupling at the resonant bands is poor. Hence, T- shaped stubs are introduced to achieve reduced mutual coupling between the antennas which effectively improves isolation characteristics of individual antenna elements beyond − 20 dB. A dual band Artificial Magnetic Conductor (AMC) is designed and placed below the MIMO antenna at a certain distance to enhance the gain at both the bands without perturbing the scattering parameters. The gain is improved from − 2.7 to 3.5 dB at the first resonance and from 1.7 to 3.85 dB at the second resonance. The diversity performances of MIMO are calculated in terms of Envelop Correlation Coefficient, Diversity Gain, Mean Effective Gain, Channel Capacity Loss, Total Active Reflection Coefficient, and Multiplexing Efficiency which confirm that the proposed MIMO antenna is a very potential candidate for multifunctional high speed wireless communication systems. The composite MIMO antenna with AMC is fabricated, and the antenna characteristics are measured which comply with the simulated results.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"27 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Labyrinth Side Weir Shape Modification on the Hydrodynamic Performance: Experimental and Numerical Study 迷宫侧堰形状修改对水动力性能的影响：实验和数值研究

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09563-9

Bshkoj S. Hussein, Shaker A. Jalil

{"title":"Influence of Labyrinth Side Weir Shape Modification on the Hydrodynamic Performance: Experimental and Numerical Study","authors":"Bshkoj S. Hussein, Shaker A. Jalil","doi":"10.1007/s13369-024-09563-9","DOIUrl":"https://doi.org/10.1007/s13369-024-09563-9","url":null,"abstract":"Controlling water levels in main channels by constructing side weirs can be influenced by geometric modification. Therefore, proposed geometric changes to the crest of the traditional sharp-crested weir are tested to study the hydrodynamic performance of these weirs. Triangular labyrinth side weir with and without a ramp, curved wing crest and 3 different diameters of circular crest were investigated experimentally and numerically. All the tested shapes have three inclusion angles (θ = 30, 45, and 60°), and three heights (0.1, 0.15, 0.2 m). The fluid volume (VOF) and the turbulence renormalization (RNG k-ϵ) method were selected for simulation and verifying the free surface flow along the center line and beside the weir in the main channel and measuring the velocity at certain cross sectionssections. The smaller inclusion angle between the walls (θ = 30°) performs better in discharging side flow and has a higher discharge coefficient than others. Upon comparison with a traditional labyrinth side weir, a modified side weir with a curved wing and a smaller circular crest diameter increases discharge coefficient (Cd) by about 20.7% and 6.43%, respectively, while its value reduced with the increase of crest diameter and its performance decreased about 17% by increasing the weir crest diameter from 2.5 to 5 cm. However, no improvements have been visualized for adding an upstream ramp. Moreover, in a smaller inclusion angle, the diverting streamline width of flow was obtained to be 0.81 and 0.65 times the main channel width for the modified weir with a curved wing and triangular labyrinth side weir, respectively. In addition, the highest separation zone width downstream of the parent channel for inclusion angle (30°) was observed to be about 2.5 and 1.8 times its width of angle (60°) for curved wing and traditional labyrinth weir, respectively. The discharge coefficient of the curved wing was 3 times the normal rectangular side weir coefficient.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of ESBL-Producing Gram-Negative Bacteria Among Isolates Obtained from Fecal Samples of Outpatients of Nablus Area, West Bank-Palestine 从巴勒斯坦河西岸纳布卢斯地区门诊病人粪便样本中获得的分离菌中产 ESBL 革兰氏阴性菌的流行情况

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09581-7

Muna M. Abbas, Israa Massarwa, Alaa Abu Alhija, Saja Nashef, Alaeddin Abuzant, Motasem Almasri, Raghad Abuzant, Alaa Salman, Mazen Salman

{"title":"Prevalence of ESBL-Producing Gram-Negative Bacteria Among Isolates Obtained from Fecal Samples of Outpatients of Nablus Area, West Bank-Palestine","authors":"Muna M. Abbas, Israa Massarwa, Alaa Abu Alhija, Saja Nashef, Alaeddin Abuzant, Motasem Almasri, Raghad Abuzant, Alaa Salman, Mazen Salman","doi":"10.1007/s13369-024-09581-7","DOIUrl":"https://doi.org/10.1007/s13369-024-09581-7","url":null,"abstract":"Extended-spectrum β-lactamase (ESBL)-producing bacteria are responsible for a considerable burden of difficult to treat infections in different regions of the world. This study was conducted to assess the prevalence, characterize the isolates, and assess the antibiotic susceptibility profiles of ESBL-producing bacteria in fecal samples of outpatients in Nablus, Palestine. The design of this study was a retrospective cross-sectional design, during which 161 Gram-negative bacterial isolates were obtained from the fecal samples of 268 outpatients et al.-Rahma Center, Rafidia Surgical Hospital, and Al-Watani Hospital. These bacterial isolates were identified previously as potential ESBL-producers and then were stored at − 8 0 °C. Out of these isolates 112 (41.7%) were phenotypically confirmed to be ESBL producers and their antibiotic-resistance profile were examined using the disk diffusion method. Female patients were 2.21-times more likely to test positive for ESBL-producing bacteria compared to male patients (95% CI 1.08–4.52) among the tested isolates. Escherichia coli, Klebsiella pneumoniae, and Klebsiella oxytoca were the most prevalent ESBL-producing bacteria.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"32 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Macro-Properties of Reinforced Soil by Rice Straw With/Without PVA Treatment 稻草加固土（含/不含 PVA 处理）的宏观特性

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09498-1

Lihua Li, Gang Liu, Yuxia Bai, Chengbin Fan

{"title":"The Macro-Properties of Reinforced Soil by Rice Straw With/Without PVA Treatment","authors":"Lihua Li, Gang Liu, Yuxia Bai, Chengbin Fan","doi":"10.1007/s13369-024-09498-1","DOIUrl":"https://doi.org/10.1007/s13369-024-09498-1","url":null,"abstract":"This study explores the potential of rice straw. The durability and effectiveness of polyvinyl alcohol (PVA)-treated rice straw in reinforcing silty clay were evaluated by measuring its adhesive absorption, tensile strength, and water absorption. The study found that the compressive strength of the reinforced soil first increased and then decreased with the addition of straw, with an optimal mix of 0.3%. The water stability of the reinforced soil improved significantly, with reduced disintegration rates and extended disintegration times. The germination rate, growth height, and coverage of plants in the reinforced soil also increased significantly. As the curing time increased, the compressive strength of the reinforced soil peaked at 7 days before declining. The soil reinforced with PVA-treated straw showed better compressive strength and water stability than untreated straw. The PVA treatment did not negatively affect plant germination or growth, only slightly affecting early plant promotion. The test results provide a scientific basis for the implementation of more sustainable and environmentally friendly civil engineering practices.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"21 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Screw Pile Behavior in Cohesive Soil Under Uplift and Compressive Forces by Experimental Studies and Numerical Analyses 通过实验研究和数值分析探究粘性土中螺旋桩在上浮力和压缩力作用下的行为

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09553-x

Talha Sarici, Mustafa Ozcan

{"title":"Investigation of Screw Pile Behavior in Cohesive Soil Under Uplift and Compressive Forces by Experimental Studies and Numerical Analyses","authors":"Talha Sarici, Mustafa Ozcan","doi":"10.1007/s13369-024-09553-x","DOIUrl":"https://doi.org/10.1007/s13369-024-09553-x","url":null,"abstract":"Within the scope of this study, experimental studies and numerical analyses were carried out to investigate the effect of the use of screw piles and traditional piles without screws on the bearing capacity of cohesive soils under the effect of uplift and compressive forces. In the experimental studies, the effect of changing the number of helixes and the effect of different overburden loads caused by this change were investigated. In numerical analyses, the finite element method was used via Plaxis 3D and a new design different from the commonly used modeling was created using the segmented helix model. After validating the results of numerical analysis and experimental study, the effect of different embedment depths and helix diameters on the behavior of cohesive soil reinforced with screw piles under loads was investigated. According to the results obtained from the study, the bearing capacity of cohesive soil increased as the screw pile helix number increased. Increase in bearing capacity was also observed with increasing embedment depth and helix diameter. In addition, the segmented helix model used in the numerical analyses represented the screw pile behavior more realistically.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"34 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Studies on the Oil–Water Mixture Separation by Corrugated Plates with Hooks and Holes in Various Shapes and Configurations 各种形状和配置的带钩和孔波纹板分离油水混合物的数值研究

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-14 DOI: 10.1007/s13369-024-09560-y

Mehmet Oruc, Muhammed Salih, Sedat Yayla, Seyfettin Bayraktar

{"title":"Numerical Studies on the Oil–Water Mixture Separation by Corrugated Plates with Hooks and Holes in Various Shapes and Configurations","authors":"Mehmet Oruc, Muhammed Salih, Sedat Yayla, Seyfettin Bayraktar","doi":"10.1007/s13369-024-09560-y","DOIUrl":"https://doi.org/10.1007/s13369-024-09560-y","url":null,"abstract":"The present paper reports the studies on the separation efficiency of a water–oil mixture in the second process in which the water consists of 5–10% crude oil in general. The mixture in this stage was exposed to an additional separation. For this purpose, corrugated plates with L-shaped hooks and holes on the top intersection of the plates were used. Before handling some design factors such as the hole pattern at the intersection of the inclined plates, the inclination angle of the corrugated plates, and the hooks attached to the plates, an experimental rig was designed to validate the computational fluid dynamics (CFD) results. Upon achieving a successful comparison, the numerical studies were extended to reveal the effects of hole shapes and arrangement pattern and the angle of the plates. It was found that attaching L-shaped hooks to the plates improves separation effectiveness by 2% as compared to hookless plates. The parametric CFD studies reveal that the hole shapes do not affect considerably the separation efficiency while raising the plates increases the efficiency slightly and pressure drop dramatically.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"8 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structured Defense Model Against DNP3-Based Critical Infrastructure Attacks 针对基于 DNP3 的关键基础设施攻击的结构化防御模型

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-14 DOI: 10.1007/s13369-024-09577-3

Erdal Ozdogan

{"title":"Structured Defense Model Against DNP3-Based Critical Infrastructure Attacks","authors":"Erdal Ozdogan","doi":"10.1007/s13369-024-09577-3","DOIUrl":"https://doi.org/10.1007/s13369-024-09577-3","url":null,"abstract":"Critical infrastructures encompass the essential systems required to operate various sectors, including energy, water, communication, finance, health, and transportation. The sophistication and organization of attacks on these infrastructures are escalating. A frequently targeted protocol within these critical infrastructures is the Distributed Network Protocol 3 (DNP3). This study developed a Machine Learning-supported Intrusion Detection System to identify attacks on DNP3 networks. The research utilized a current and balanced dataset containing DNP3 traffic from critical infrastructures. A model incorporating two defense lines, reflecting the structure of the attacks, was proposed. The initial detection of reconnaissance attacks is designed to prevent subsequent attacks. Reconnaissance attacks are identified in the first defense line using Extreme Gradient Boosting. In contrast, attacks on critical infrastructures are classified as the second defense line, with the support of artificial neural networks. In the study’s first phase, the model achieved high accuracy in detecting reconnaissance attacks. In the second phase, the model achieved approximately 99% accuracy in detecting attacks and around 98% average success in classification. The model achieved 96% accuracy in evaluating unknown attack detection capability.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"100 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tribological Investigation and Statistical Optimization by Response Surface Methodology of Vegetable Oil-Based Ionanolubricants 植物油基离子醇润滑剂的摩擦学研究和响应面方法的统计优化

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-14 DOI: 10.1007/s13369-024-09538-w

Gitesh Kumar, H. C. Garg

{"title":"Tribological Investigation and Statistical Optimization by Response Surface Methodology of Vegetable Oil-Based Ionanolubricants","authors":"Gitesh Kumar, H. C. Garg","doi":"10.1007/s13369-024-09538-w","DOIUrl":"https://doi.org/10.1007/s13369-024-09538-w","url":null,"abstract":"The demand for environmentally acceptable lubricants has surged due to awareness of the detrimental effects of petroleum-based lubricants. Vegetable oil-based nanolubricants have garnered significant attention over the past two decades. The present research work focuses on detailed experimental investigation of tribological and rheological characteristics of rice bran oil and sesame oil with trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate ([P66614][BTMPP]) ionic liquid and titanium oxide (TiO2) nanoparticles as additives. Experiments were conducted using ball on disc tribotester based on central composite design generated by response surface methodology. The study evaluated under three input parameters are load, speed, ionic liquid concentration and two output responses are average coefficient of friction and specific wear rate. Optimal tribological performance has been observed in rice bran oil and sesame oil formulations containing 0.608 vol% and 0.99 vol% of ionic liquid, respectively. Rheological analysis indicated Newtonian behavior across all lubricant samples.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"28 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conversion of Used Cooking Oil into Biodiesel by Utilizing Zirconia Catalyst as Acid Catalyst (SO4/ZrO2) and Base Catalyst (ZrO2/CaO) 利用氧化锆催化剂作为酸催化剂（SO4/ZrO2）和碱催化剂（ZrO2/CaO）将废食用油转化为生物柴油

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-13 DOI: 10.1007/s13369-024-09520-6

Remi Ayu Pratika, Zahrotun Nafisah, Yuliana Yuliana, Syarpin Syarpin, Rendy Muhamad Iqbal, Ysrafil Ysrafil, Karna Wijaya

{"title":"Conversion of Used Cooking Oil into Biodiesel by Utilizing Zirconia Catalyst as Acid Catalyst (SO4/ZrO2) and Base Catalyst (ZrO2/CaO)","authors":"Remi Ayu Pratika, Zahrotun Nafisah, Yuliana Yuliana, Syarpin Syarpin, Rendy Muhamad Iqbal, Ysrafil Ysrafil, Karna Wijaya","doi":"10.1007/s13369-024-09520-6","DOIUrl":"https://doi.org/10.1007/s13369-024-09520-6","url":null,"abstract":"Zirconium (ZrO2) was synthesized from Zirconium Oxychloride (ZrOCl2.8H2O) using hydrothermal method. Modification of ZrO2 as an acid catalyst (SO4/ZrO2) was made by adding 0.5; 1; and 1.5 M sulfuric acid solutions to ZrO2. The sulfation process was confirmed by formation of SO42− ion spectrum in 1238–1001 cm−1 region and resulted presence of elemental sulfur with mass percentage of 1.36%. The catalyst acidity test showed 1.5 M SO4/ZrO2 catalyst as catalyst with the highest acidity value. The application of 1.5 M SO4/ZrO2 catalyst in the esterification reaction of used cooking oil resulted decreasing of free fatty acid content up to 55.33%. In the another, preparation of basic catalyst, ZrO2/CaO was carried out by the addition of Calcium oxide (CaO) to ZrO2 in three concentrations group of 25, 30, and 35%. The results, we found the catalyst with optimal basicity value in group 30% ZrO2/CaO. In addition, the 30% ZrO2/CaO catalyst has CaZrO3 and lime-CaO crystal phases; exfoliated surface morphology and result Zirconium and Calcium of 7.41 and 42.83%, respectively. Furthermore, biodiesel production from used cooking oil using 30% ZrO2/CaO catalyst produces biodiesel with good conversion percentage of 94.00%.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"22 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-Healing and Mechanical Properties of Aged Hot Mix Asphalt Containing Waste Oil Capsules 含废油胶囊的熟化热拌沥青的自愈合和力学性能

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-13 DOI: 10.1007/s13369-024-09574-6

Özge Erdoğan Yamaç, Mehmet Yilmaz, Erkut Yalçin, Ahmet Münir Özdemir, Alvaro Garcia-Hernandez, Baha Vural Kök

{"title":"Self-Healing and Mechanical Properties of Aged Hot Mix Asphalt Containing Waste Oil Capsules","authors":"Özge Erdoğan Yamaç, Mehmet Yilmaz, Erkut Yalçin, Ahmet Münir Özdemir, Alvaro Garcia-Hernandez, Baha Vural Kök","doi":"10.1007/s13369-024-09574-6","DOIUrl":"https://doi.org/10.1007/s13369-024-09574-6","url":null,"abstract":"Hot mix asphalts are known to have a self-healing property and microcracks in the pavement can close to some extent after they occur if they are not subjected to load and if sufficient time is allowed. However, this healing period is prolonged, and the healing rate is not very high. In this study, calcium alginate capsules containing waste vegetable oil and waste mineral oil as rejuvenating agents were produced, and used in asphalt mixtures at four different rates (0.25%, 0.50%, 0.75%, and 1.0%) by weight. The study aims to develop an environmentally friendly and economically viable repair method by using waste oils. Marshall stability and flow and tensile strength ratio tests were conducted on cylindrical specimens. Additionally, three-point bending test was performed on aged asphalt mixtures to determine the self-healing rates of cracks formed in the specimens. Fourier transform infrared spectroscopy was conducted on bitumen specimens taken before crack formation and after the healing period to determine the percentage of ruptured capsules in the mixture. The results showed that the addition of capsules containing waste mineral oil and vegetable oil reduced stability values and increased flow values. However, according to the results of the retained Marshall stability test, it was determined that the addition of capsules, especially at a 0.5% ratio, increased resistance to moisture damage. Regarding crack-healing results, it was found that temperature and curing time increased healing rates, and capsules containing waste mineral oil provided higher healing rates compared to those containing waste vegetable oil.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0