Advances in Civil and Architectural Engineering最新文献_第2页

COMPREHENSIVE REVIEW ON HYDROPHOBIC MODIFICATION OF CONCRETE: PROGRESS AND PERSPECTIVES 混凝土疏水改性研究综述:进展与展望

Advances in Civil and Architectural Engineering Pub Date : 2023-06-29 DOI: 10.13167/2023.26.10

Japneet Sidhu, Pardeep Kumar

{"title":"COMPREHENSIVE REVIEW ON HYDROPHOBIC MODIFICATION OF CONCRETE: PROGRESS AND PERSPECTIVES","authors":"Japneet Sidhu, Pardeep Kumar","doi":"10.13167/2023.26.10","DOIUrl":"https://doi.org/10.13167/2023.26.10","url":null,"abstract":"The inherent nature of concrete is porous, hydrophilic, and microcracked, making it susceptible to water penetration into its matrix. This is the primary source of durability concerns. Furthermore, this type of penetration leads to considerable issues for concrete structures, resulting in significant financial burdens due to regular repairs and maintenance and a reduction in the structure's lifespan. In this study, the properties, uses, and advancements of hydrophobic concrete are investigated, focusing on durability, corrosion resistance, and sustainability. The various types and techniques for producing hydrophobic concrete are explored. Additionally, the paper presents the impacts of hydrophobic treatment on concrete properties such as compressive strength, water absorption, and permeability. Potential applications of hydrophobic concrete, including use in bridges, tunnels, and marine structures, are also discussed. The review concludes by examining the benefits, challenges and limitations of hydrophobic concrete technology, including aspects like cost-effectiveness, compatibility with other construction materials, and potential environmental repercussions. In summary, this review highlights the potential of hydrophobic concrete to transform the construction industry by offering enduring and sustainable solutions to water-related issues.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80616986","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

PERFORMANCE EVALUATION OF A SMALL-SCALE MAGNETORHEOLOGICAL DAMPER FOR CIVIL ENGINEERING APPLICATIONS 土木工程用小型磁流变阻尼器的性能评价

Advances in Civil and Architectural Engineering Pub Date : 2023-06-10 DOI: 10.13167/2023.27.4

Shamurailatpam Vivekananda Sharma, Hemalatha Gladston, Arunraj Ebanezer

{"title":"PERFORMANCE EVALUATION OF A SMALL-SCALE MAGNETORHEOLOGICAL DAMPER FOR CIVIL ENGINEERING APPLICATIONS","authors":"Shamurailatpam Vivekananda Sharma, Hemalatha Gladston, Arunraj Ebanezer","doi":"10.13167/2023.27.4","DOIUrl":"https://doi.org/10.13167/2023.27.4","url":null,"abstract":"Magnetorheological dampers (MRDs) are devices that adjust their damping properties in response to an external magnetic field. Large-scale MRDs have been successfully used as vibration control devices in structures. This study focuses on modelling and optimizing an MRD using COMSOL Multiphysics. Various parameters, such as coil turns and current, are optimized to achieve the maximum flux value in the MRD. The simulation yielded a maximum magnetic flux of 0,44 T with 500 coil turns. Based on the optimized MRD parameters, a numerical equation is then used to calculate the total damping force. The maximum numerical and experimental damping forces corresponding to a 2,0 A current were 989,39 and 1004,63 N, respectively. The numerical damping force is then compared to the experimental results to validate the accuracy of the model. The MRD is integrated into a scaled-down reinforced concrete frame and subjected to a cyclic loading test for performance evaluation. The results show that the MR dampers improve the performance of the frame structure, increasing its load-carrying capacity and energy dissipation by 19,45 % and 20,43 %, respectively. The findings of the study provide valuable insights into the behaviour of MRDs and their optimization using numerical simulations, as well as highlight the importance of experimental validation for accurate prediction of the performance of MRDs in practical civil engineering applications.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135050663","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

SIMPLE INCREMENTAL APPROACH FOR ANALYSING OPTIMAL NON-PRISMATIC FUNCTIONALLY GRADED BEAMS 分析最优非棱镜功能梯度梁的简单增量法

Advances in Civil and Architectural Engineering Pub Date : 2023-04-17 DOI: 10.13167/2023.26.8

H. Ziou, M. Guenfoud

{"title":"SIMPLE INCREMENTAL APPROACH FOR ANALYSING OPTIMAL NON-PRISMATIC FUNCTIONALLY GRADED BEAMS","authors":"H. Ziou, M. Guenfoud","doi":"10.13167/2023.26.8","DOIUrl":"https://doi.org/10.13167/2023.26.8","url":null,"abstract":"This paper presents a simple incremental approach of analysing the static behaviour of functionally graded tapered beams. This approach involves dividing the non-uniform beam into segments with uniform cross-sections, and using two separate finite element models to analyse the structural behavior of slender beams (Euler-Bernoulli model) and deep beams (Timoshenko beam theory). The material properties of the beam vary according to a power law distribution through the thickness, resulting in smooth variations in the mechanical properties. The finite element system of equations is obtained using the principle of virtual work. Detailed information on the shape functions and stiffness matrix of the beam is provided, and the numerical results are evaluated and validated using data from the literature. The comparison demonstrates that the response of the functionally graded tapered beams is accurately assessed by the proposed approach. Additionally, the effects of material distribution, boundary conditions, and tapering parameter on the deflection behavior are presented. Results show that an increase in the power law index increases the flexibility of the functionally graded tapered beams, resulting in higher deflection. Furthermore, lower tapering parameters also result in higher deflection. Compared to other boundary conditions, clamped-clamped boundary conditions demonstrate the best performance in terms of maximum deflection.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78133953","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

ELEMENTARY SCHOOL BUILDINGS CONDITION ASSESSMENT: CASE OF PRIMORJE-GORSKI KOTAR COUNTY (CROATIA) 小学校舍状况评估:以克罗地亚primorje-gorski kotar县为例

Advances in Civil and Architectural Engineering Pub Date : 2023-04-03 DOI: 10.13167/2023.26.7

Ksenija Tijanić Štrok, D. Car-Pušić, Saša Marenjak

{"title":"ELEMENTARY SCHOOL BUILDINGS CONDITION ASSESSMENT: CASE OF PRIMORJE-GORSKI KOTAR COUNTY (CROATIA)","authors":"Ksenija Tijanić Štrok, D. Car-Pušić, Saša Marenjak","doi":"10.13167/2023.26.7","DOIUrl":"https://doi.org/10.13167/2023.26.7","url":null,"abstract":"This study deals with the condition examination of elementary school buildings in Primorje-Gorski Kotar County, Croatia. For schools to be functional and of high quality, adequate maintenance is mandatory. Therefore, school maintenance programs need information on the building's condition based on systematic and comprehensive assessments as a primary input. This study aims to establish a framework for assessing the condition of school buildings, based on which information can be obtained quickly and practically regarding the condition of all critical facility elements. To this end, a database on schools and their conditions was created. The conditions of school buildings in terms of damage and defects and their causes were determined. Descriptive and inferential statistical operations were performed on the collected data. A condition assessment of the buildings was performed using a questionnaire survey among the principals, based on the school buildings division model developed in this study; the model presents building elements and a systematic visual condition rating scale. According to the available data, this is Croatia's first condition assessment on elementary school buildings. The main results show that on average, the examined schools are in good condition. Moreover, according to the results, the school building condition is most affected by dilapidation and lack of financial resources.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82729557","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

REMOVAL OF FLUORIDE FROM DRINKING WATER THROUGH LOW-COST TECHNIQUES 通过低成本技术从饮用水中去除氟化物

Advances in Civil and Architectural Engineering Pub Date : 2023-03-28 DOI: 10.13167/2023.26.6

Hira Ishtiaq, Norheen Amina, Amina Irfan, Habiba Mohsin, Ahsan Shahbaz

{"title":"REMOVAL OF FLUORIDE FROM DRINKING WATER THROUGH LOW-COST TECHNIQUES","authors":"Hira Ishtiaq, Norheen Amina, Amina Irfan, Habiba Mohsin, Ahsan Shahbaz","doi":"10.13167/2023.26.6","DOIUrl":"https://doi.org/10.13167/2023.26.6","url":null,"abstract":"Fluoride ions (F-) from natural sources or industrial wastewater are the main cause of many pathological conditions in people living in more than 25 countries. Thus, removing F- from drinking water is pivotal for preventing serious health consequences. The WHO recommends a limit of 1,5 mg/L for fluoride in drinking. Excessive amounts of fluoride in drinking water are prevalent in Pakistan, leading to related health risks. Low-cost techniques for the defluoridation of drinking water can be used. In this study, the removal of fluoride from drinking water by an adsorption method using low-cost materials/adsorbents, such as marble chips, wheat husks, rice husks, egg shells, concrete, fuller earth, fly ash, freshly fired bricks, and charcoal, at different contact times and different bed thicknesses were investigated. A batch sampling technique was used for sample collection. On average, marble chips, wheat husks, rice husks, egg shells, concrete, fuller earth, fly ash, freshly fired bricks, and activated charcoal (rice husk) resulted in 71,99 %; 90,99 %; 66,73 %; 90,99 %; 63,30 %; 71,99 %; 22,60 %; 49,67 %; and 90,13 % fluoride removal, respectively. Therefore, defluoridation using these materials is desirable. The performance of adsorbents depends on parameters such as contact time, depth of the adsorbent media, and pH. The bed thickness of the adsorbent has a minor effect on fluoride removal. The major contributors to fluoride removal from water are contact time and adsorbent composition.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72493590","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

INFLUENCE OF DIFFERENT INTERFACE MATERIALS AND OPENINGS IN INFILL OF REINFORCED CONCRETE INFILLED FRAMES 不同界面材料及开孔对钢筋混凝土框架填充的影响

Advances in Civil and Architectural Engineering Pub Date : 2023-03-28 DOI: 10.13167/2023.26.5

{"title":"INFLUENCE OF DIFFERENT INTERFACE MATERIALS AND OPENINGS IN INFILL OF REINFORCED CONCRETE INFILLED FRAMES","authors":"","doi":"10.13167/2023.26.5","DOIUrl":"https://doi.org/10.13167/2023.26.5","url":null,"abstract":"This study analytically investigates the behaviour of trapezoidal infilled frames (TIFs) with brick masonry infills having openings and various interface materials between the brick panel and reinforced concrete frame. Single-storey single-bay frame specimens are analysed under in-plane static loading. For this investigation, the optimum angle of the column inclination for the trapezoidal frame must be determined in terms of maximum lateral stiffness. The optimum angle must be further analysed and compared with rectangular bare and infilled frames, with various materials of the interface. This infilled frame is extended to analyse the openings in the infill further. To study the effects of openings in infilled panels, TIFs with different sizes and positions of window openings are analysed and compared with the rectangular frame. This study further analyses three different combinations of interfaces and determines the intermediate stiffness of the frame combination. The main focus of this investigation is to reduce the high rigidity of the TIF leading to high base shear. It is found that, the infilled frame is stiffer than the bare frame, and the cement mortar interface is stiffer than the lead–cork interface. This research uses ABAQUS software, a finite element analysis program, for expanding the observational analysis.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88466153","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

Investigation of the effect of frequency on shear strength and damping of pure sand and sand stabilised with rice husk ash using cyclic triaxial tests 用循环三轴试验研究频率对纯砂和稻壳灰稳定砂抗剪强度和阻尼的影响

Advances in Civil and Architectural Engineering Pub Date : 2023-03-04 DOI: 10.13167/2023.26.3

Maysam Salimzadehshooiili

{"title":"Investigation of the effect of frequency on shear strength and damping of pure sand and sand stabilised with rice husk ash using cyclic triaxial tests","authors":"Maysam Salimzadehshooiili","doi":"10.13167/2023.26.3","DOIUrl":"https://doi.org/10.13167/2023.26.3","url":null,"abstract":"Rice husk ash (RHA), owing to its pozzolanic properties and wide abundance, is an additive that can be used as an alternative to cement to improve a variety of soils. Damping and shear modulus are two important soil dynamic parameters used to predict soil behaviour under dynamic loading. Therefore, in this study, materials were prepared and their specifications were determined. A cyclic triaxial device was used to determine the dynamic parameters (stress control). Subsequently, the results related to shear modulus and damping calculated for pure sand before and after stabilisation were analysed according to different percentages of stabilisers for two frequencies of 0.5 and 1 Hz. The results revealed the effect of different frequencies on the damping of pure sand, which differed for stabilised sand. In all stabilised specimens, the shear modulus decreased with increasing frequency. Additionally, the damping decreased with increasing frequency in the stabilised samples. The shear modulus increases with the increase in the amount of stabilisers. The results also showed the positive effect of partially replacing cement with RHA.","PeriodicalId":29665,"journal":{"name":"Advances in Civil and Architectural Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77696905","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

Impact of road alignment on fuel consumption and gas emissions – experimental and analytical research 道路线形对燃料消耗和气体排放的影响-实验和分析研究

Advances in Civil and Architectural Engineering Pub Date : 2023-03-04 DOI: 10.13167/2023.26.4

D. Cvitanić, Deana Breški, Biljana Maljković

引用次数: 0

Effects of Kortta fibres and microsilica on the mechanical properties of lightweight concrete in oil product environments Kortta纤维和微二氧化硅对石油产品环境中轻质混凝土力学性能的影响

Advances in Civil and Architectural Engineering Pub Date : 2023-03-04 DOI: 10.13167/2023.26.2

A. Jafari, Sajad Rezaei

引用次数: 0

Long-term forecasting of thermal and humidity actions on buildings 对建筑物热湿作用的长期预测

Advances in Civil and Architectural Engineering Pub Date : 2023-02-28 DOI: 10.13167/2023.26.1

M. Pashynskyi, V. Pashynskyi, A. Tykhyi, S. Karpushyn

引用次数: 0