Journal of Applied Materials and Technology最新文献_第2页

Peroxymonosulfate activation using CoFe2O4/Fe2O3 nanocomposite for Acid Orange removal 用CoFe2O4/Fe2O3纳米复合材料活化过氧单硫酸盐去除酸橙

Journal of Applied Materials and Technology Pub Date : 2023-03-02 DOI: 10.31258/jamt.3.2.34-43

Mohamed Faisal Gasim, Qing-Sheng Gooi, Wen-Da Oh

引用次数: 1

The Effect of Portland Cement on Fly Ash Bottom Ash Geopolymer Hybrid Concrete Exposed to Peat Water Environment 硅酸盐水泥对粉煤灰底灰地聚合物混合混凝土在泥炭水环境中的影响

Journal of Applied Materials and Technology Pub Date : 2023-01-31 DOI: 10.31258/jamt.3.2.24-33

M. Olivia, Rudy Satriya Pratama, Ferisma Ratu Giri, I. R. Sitompul, Alfian ' Kamaldi, G. Wibisono, E. Saputra

{"title":"The Effect of Portland Cement on Fly Ash Bottom Ash Geopolymer Hybrid Concrete Exposed to Peat Water Environment","authors":"M. Olivia, Rudy Satriya Pratama, Ferisma Ratu Giri, I. R. Sitompul, Alfian ' Kamaldi, G. Wibisono, E. Saputra","doi":"10.31258/jamt.3.2.24-33","DOIUrl":"https://doi.org/10.31258/jamt.3.2.24-33","url":null,"abstract":"Geopolymer hybrid concrete is prepared by activating fly ash bottom ash with an alkaline solution and curing with Ordinary Portland Cement (OPC). OPC could be added to the mixture to increase the reaction, promote hydration, and assist in curing at room temperature. Peat water is an acidic organic environment that may reduce the durability of concrete. The purpose of this research is to determine the effect of Portland cement on the properties of FABA geopolymer hybrid concrete exposed to peat water. Portland cement was used in geopolymer as an additive and a substitute. Compressive strength, porosity, and weight change were evaluated for both mixtures. The NaOH molarities were 10, 12, and 14M, the NaOH/sodium silicate ratios were 1.5, 2.0, and 2.5, and the Ordinary Portland Cement percentages were 0, 10, and 15%. Specimens were exposed to peat water for up to 91 days following 28 days of room temperature curing. The geopolymer mixture with 10M NaOH, 2.5M Ms, and 15% OPC had the highest compressive strength and the lowest porosity. The FABA geopolymer hybrid with OPC had a slightly greater compressive strength and a lower porosity than the geopolymer containing OPC as a cement replacement material. In addition, weight change is more stable in geopolymers containing OPC. Based on the performance of both mixes in peat water, it is recommended to use OPC as an additive in FABA geopolymer hybrid concrete.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124796992","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}

引用次数: 0

Optimization of Pelleting Parameters for Producing Composite Pellets Using Zeolitic Material From Fly Ash 粉煤灰沸石制备复合球团的制球参数优化

Journal of Applied Materials and Technology Pub Date : 2023-01-05 DOI: 10.31258/jamt.3.2.13-23

D. Fungaro, T. Bertolini

引用次数: 0

Determination of soluble hexavalent chromium in samples of Portland cement from Brazilian cement manufacturers 巴西水泥制造商波特兰水泥样品中可溶性六价铬的测定

Journal of Applied Materials and Technology Pub Date : 2022-12-12 DOI: 10.31258/jamt.3.2.7-12

Vanessa Zuliani, Rafaela Boni Serata, J. C. Izidoro

{"title":"Determination of soluble hexavalent chromium in samples of Portland cement from Brazilian cement manufacturers","authors":"Vanessa Zuliani, Rafaela Boni Serata, J. C. Izidoro","doi":"10.31258/jamt.3.2.7-12","DOIUrl":"https://doi.org/10.31258/jamt.3.2.7-12","url":null,"abstract":"Urbanization growing is nowadays highlighted in the big cities. Therefore, it is necessary to increase the production of cement, which is used in several areas of civil construction, to supplement the growing demand. Thus, the objective of this study was to determine the content of hexavalent soluble chromium in Portland cement samples from different cement industries in São Paulo state, Brazil, since this chemical species can cause adverse health effects as well as being a potential human carcinogenic for those who manipulate it. In Brazil, the emission of Cr6+ in the cement has no restrictions, since there is no current Brazilian law that determines the maximum concentration of it, whereas, in Europe, the current law 2003/53/EC establishes a maximum of 2 mg.kg-1. So, the Cr6+ content for different cement samples was determined by spectrophotometry based on the European standard EN196-10/2006. It was found by the analysis that among all types of cement produced in São Paulo, the only one that did not exceed the standard limit was the CP III, probably because this kind of cement has a high concentration of additions in its composition, responsible for diluting thereby chromium content. The other types of cement exceeded the established limit. It was concluded that Brazil urgently needs a law to regulate the hexavalent soluble chromium emission present in Portland cement to minimize the environmental and health effects that the cement out of specification may cause.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128391680","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}

引用次数: 0

A Deep-Learning Approach to Load Modeling in Modern Power Distribution System 现代配电系统负荷建模的深度学习方法

Journal of Applied Materials and Technology Pub Date : 2022-09-14 DOI: 10.31258/jamt.3.2.1-6

Musaed Mohammed, A. Abdulkarim

{"title":"A Deep-Learning Approach to Load Modeling in Modern Power Distribution System","authors":"Musaed Mohammed, A. Abdulkarim","doi":"10.31258/jamt.3.2.1-6","DOIUrl":"https://doi.org/10.31258/jamt.3.2.1-6","url":null,"abstract":"Modern Power Distribution Networks (MPDNs) are no longer passive because Distributed Generations (DGs) are integrated with them to enhance system reliability and power quality. For this reason, load modeling has to be updated to capture the new dynamics of active DNs. This paper presents a composite load modeling for a grid-connected photovoltaic (PV) distribution network using the Levenberg-Marquardt algorithm in the deep learning feed-forward neural network approach. Load modeling is constructing a relationship between input excitation(s) and output response(s); it can be used for simulation studies, stability analysis, and control/protection design. A grid-connected PV distribution network was modeled in Matlab/Simulink and generates data for training and model estimation. The estimated model was tested and validated using a laboratory experimental test bed. Results of the model exhibit a good fitness of 99.8% and 97.2% in active and reactive power models respectively during training. While 97.84% and 94.65% respectively were obtained during testing. The estimation errors were found to be 0.0025 and 0.0049 for active and reactive powers respectively with 0.0473 and 0.0701 corresponding errors in testing.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121814153","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}

引用次数: 0

A Review on Optimal Siting and Sizing of DSTATCOM DSTATCOM最优选址与规模研究进展

Journal of Applied Materials and Technology Pub Date : 2022-02-25 DOI: 10.31258/jamt.3.1.30-42

Dansarki Nanly Wesley, A. Abdulkarim, P. U. Okorie, A. H. Jabire, S. Saminu, N. Faruk, I. S. Madugu, A. U. Lawan, I. Rosma

{"title":"A Review on Optimal Siting and Sizing of DSTATCOM","authors":"Dansarki Nanly Wesley, A. Abdulkarim, P. U. Okorie, A. H. Jabire, S. Saminu, N. Faruk, I. S. Madugu, A. U. Lawan, I. Rosma","doi":"10.31258/jamt.3.1.30-42","DOIUrl":"https://doi.org/10.31258/jamt.3.1.30-42","url":null,"abstract":"The continuous demand for electrical energy by industries and domestic users have stressed the electricity consumption to a high level. Because most components of domestic and industrial systems are made of power electronics devices in their designs. In addition, modern electrical power distribution networks (DNs) are subjected to major disturbances. Consequently, today’s power system is laden with power quality problems such as excessive energy losses, voltage deviations, poor power factor (PF), voltage instability and reliability issues to mentioned just a few. To forestall these disturbances, Distribution Engineers have introduced the use of Custom Power Devices (CPDs) in order to reduce power losses so as improve power quality. Amongst CPDs, Distribution Static Compensator (D-STATCOM) proves most promising in minimizing power quality issues because it generates minimal harmonics, waste less power, has small size, high regulatory capability and cost effective. Researchers in recent years have focused on methodologies required for identifying the most suitable location and rating of D- STATCOM device based on divergent views. However, to date, only one author has so far reviewed a paper on this aspect of study. This paper discusses the latest study on appropriate installation and rating of D-STATCOM techniques for balanced and unbalanced radial distribution networks (UBRDNs). The paper has also provided a comprehensive literature study on the location of DSTATCOM in RDNs for power loss reduction and power quality enhancement. Comparative analyses of various techniques for development of DSTATCOM Objective functions and constraints; Merits and Demerits are presented.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131218055","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}

引用次数: 0

Simulations of the Crude Oil Tank Refurbishment Project Risks Using Monte Carlo 用蒙特卡罗方法模拟原油储罐翻新工程的风险

Journal of Applied Materials and Technology Pub Date : 2022-02-24 DOI: 10.31258/jamt.3.1.22-29

A. Sandhyavitri, Arvin Arvin, F. Restuhadi

{"title":"Simulations of the Crude Oil Tank Refurbishment Project Risks Using Monte Carlo","authors":"A. Sandhyavitri, Arvin Arvin, F. Restuhadi","doi":"10.31258/jamt.3.1.22-29","DOIUrl":"https://doi.org/10.31258/jamt.3.1.22-29","url":null,"abstract":"Simulation technology has assisted project stakeholders in predicting a range of the project results in the future under risks and uncertainties. The objectives of this article are to improve a comprehensive project planning in the perspective of the project scheduling by conducting simulations for the refurbishment of crude oil tank project risks using Monte Carlo simulations. The practical approaches for simulating the risks encompassed 3 stages: risk identification, assessment, and risk analysis using the Monte Carlo simulations. The implementation of Monte Carlo simulation in the form of stochastic approach however were not new, but the application of these approaches in the area of oil industrial projects was challenging. A Free Water Knock-Out (FWKO) tank project located in Duri, Indonesia was taken as a case study. The initial FWKO project duration was set up to be 180 working days, and it was delayed (up to 140% from the initial duration of the project planning). This study conducted deep questioner surveys from 25 oil industry stakeholders. It was identified 29 risk factors have been considered as the major causes of the project delay. The risk factors were then calculated qualitatively for performing risk indexes. Based on the risk simulations (after 1000 iterations) using Monte Carlo simulations utilizing @risk application package (under uncertainties) there was found that the possibility of this project would experience delays at the range of 47 days (126%) to 80 days (144%) from the initial project planning. This simulation had also identified the most sensitive activities causing project delays. The results was presented in the form of the spider graph diagram which assisted the project main stakeholders in developing a strategic decision during project planning phase.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122889527","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}

引用次数: 0

3D Finite Element Model for Shear-dominant Failure of Reinforced Concrete Beams 钢筋混凝土梁受剪破坏的三维有限元模型

Journal of Applied Materials and Technology Pub Date : 2022-01-28 DOI: 10.31258/jamt.3.1.12-21

Ridwan Rahman, Ilham Akbar, Rofriantona Rofriantona

{"title":"3D Finite Element Model for Shear-dominant Failure of Reinforced Concrete Beams","authors":"Ridwan Rahman, Ilham Akbar, Rofriantona Rofriantona","doi":"10.31258/jamt.3.1.12-21","DOIUrl":"https://doi.org/10.31258/jamt.3.1.12-21","url":null,"abstract":"This study explores the 3D FE modelling approach in determining the behaviour of shear-dominant responses of RC beams. Five RC beams (A1, A2, B1, C2 and C3) with different cross-sections, amount of tension reinforcement area, amount of shear reinforcement and the length of the span was analysed and the results were compared with the results of the experiment and 2D analysis available in published literature. RC beams analysed in this FE study were constructed as a discrete model using ABAQUS software. The concrete and the plate for loading as well as for supports were modelled using the C3D8R element while longitudinal steel bars and stirrups were modelled with the T3D2 element. The interaction between the steel bar and the concrete in the FE model was assumed perfectly bond. The material behaviour of concrete was modelled with the damage plasticity model where the yield or failure of the material was governed by the tensile cracking and the compressive crushing of the concrete by introducing the hardening variables. The results showed that crack propagation in the FE analysis matched the cracks observed in the test. The crack pattern on Beam A1, A2, B1 and C2 indicated that the specimens experienced flexure and shear failure while Beam C3 experienced less brittle behaviour. Estimates of strength and the load–deformation response of 3D analysis were certainly achieved with reasonable accuracy compared to that of 2D analysis. The difference of experiment-to-2D strength (Pu,exp - Pu,2D / Pu,exp) had a mean of 4.53 whereas the difference of experiment-to-3D strength (Pu,exp - Pu,3D / Pu,exp) had a mean of 1.83. Furthermore, the displacements at ultimate load gained in the 3D analysis were comparable to those of experiments. The difference of experiment-to-2D (du,exp - du,2D / du,exp) and experiment-to-3D (du,exp - du,3D / du,exp) midspan displacement had a mean of 19.91 and 10.89, respectively.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124164069","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}

引用次数: 0

Synthesis and Characterization of Hydroxyapatite from Duck Eggshell by Wet Precipitation Process 鸭蛋壳中羟基磷灰石的湿沉淀法合成及表征

Journal of Applied Materials and Technology Pub Date : 2021-09-17 DOI: 10.31258/jamt.3.1.8-11

Y. Azis, C. D. Alfarisi, K. Komalasari, K. Khairat, Y. Sahan

引用次数: 1

Brine sludge waste from a Chlor-alkali industry: characterization and its application for non-structural and structural construction materials 氯碱工业卤水污泥废弃物:表征及其在非结构和结构建筑材料中的应用

Journal of Applied Materials and Technology Pub Date : 2021-08-10 DOI: 10.31258/jamt.3.1.1-7

J. C. Izidoro, D. Fungaro, L. Viviani, Rogério Cesar de Lara da Silva

{"title":"Brine sludge waste from a Chlor-alkali industry: characterization and its application for non-structural and structural construction materials","authors":"J. C. Izidoro, D. Fungaro, L. Viviani, Rogério Cesar de Lara da Silva","doi":"10.31258/jamt.3.1.1-7","DOIUrl":"https://doi.org/10.31258/jamt.3.1.1-7","url":null,"abstract":"Brine sludge (BS) is an industrial waste generated in large amounts by the Chlor-alkali industry and, usually disposed into industrial landfills. Because BS contains several chemical compounds, also presents a potential environmental impact. The feasibility of the utilization of brine sludge wastes for the preparation of value-added materials was investigated. The characterization of two brine sludge samples was performed in terms of chemical and physical composition, particle size distribution, X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and thermal analysis (DTA/TG). Elements like Ca, Si, Na, Mg, Al, Cl, and Fe were identified in the samples. The XRD results confirmed the crystalline nature of compounds and indicated that the main compounds in brine sludge samples were calcium carbonate, sodium chloride, magnesium hydroxide, and quartz. FTIR showed the presence of varying functional groups like carbonate, siloxane, and hydroxide. The two brine sludge samples can be considered as a fine powder with the mean diameter (d50) of 4.984 µm and 24.574 µm, for the BS from Santo André and Cubatão, respectively. The results indicated that the brine sludge samples presented favorable characteristics to use limestone ﬁller and binder alternative to Portland cement in the nonstructural construction materials. The incorporation of brine sludge in geopolymeric materials is another possible use in sustainable construction material products. The production of value-added products from brine sludge will be an important contribution towards sustainable development adopted by the Chlor-alkali industry.","PeriodicalId":287674,"journal":{"name":"Journal of Applied Materials and Technology","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131780348","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}

引用次数: 1