Journal of Civil Engineering and Construction最新文献

Mechanical and Durability Evaluation of Latex Modified Lightweight Concrete 乳胶改性轻质混凝土的力学和耐久性评估

Journal of Civil Engineering and Construction Pub Date : 2024-03-30 DOI: 10.32732/jcec.2024.13.1.29

Zahra Khaksari, Mohammad Reza Jahani Chegeni, Arman Tavakkol, Fatemeh Ataei Zadeh, Seyed Mohammad Amin Mirtaheri Moghadam, Ehsan Merikhi, Shahram Asayesh

{"title":"Mechanical and Durability Evaluation of Latex Modified Lightweight Concrete","authors":"Zahra Khaksari, Mohammad Reza Jahani Chegeni, Arman Tavakkol, Fatemeh Ataei Zadeh, Seyed Mohammad Amin Mirtaheri Moghadam, Ehsan Merikhi, Shahram Asayesh","doi":"10.32732/jcec.2024.13.1.29","DOIUrl":"https://doi.org/10.32732/jcec.2024.13.1.29","url":null,"abstract":"Modified polymer concretes are popular materials in the construction industry due to their relatively high performance, versatility and stability compared to ordinary cement concrete. In this research, by adding three different latexes, including styrene butadiene rubber, ethylene vinyl acetate and acrylic latex, the mechanical and durability properties of Light weight concrete with Leca aggregates were measured. In this regard, 15 different mixtures are carried out in two laboratory programs. in the first stage, the effect of each latex with 5, 7.5 and 10% percentages with cement are investigated, and in the next stage, the simultaneous effect of latex with Microsilica. It was measured on the properties of lightweight concrete. The results showed that the addition of latex has a significant effect on increasing the durability factors of lightweight concrete several times. With the combination of 7.5% latex and 7% Microsilica, the best compressive strength has been recorded. By using latex, the flexural strength of concrete increased around 30%. Also, the passing charge of the lightweight concrete sample without latex is 4124 coulombs, while the sample containing 10% ethylene vinyl acetate passes 451 coulombs of charge.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140361411","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

From Bricks to Bytes: Navigating Data Management in Construction Technology 从砖块到字节：建筑技术中的数据管理导航

Journal of Civil Engineering and Construction Pub Date : 2024-03-30 DOI: 10.32732/jcec.2024.13.1.1

Saeed Rokooei, Hossein Naderi, Alireza Shojaei

{"title":"From Bricks to Bytes: Navigating Data Management in Construction Technology","authors":"Saeed Rokooei, Hossein Naderi, Alireza Shojaei","doi":"10.32732/jcec.2024.13.1.1","DOIUrl":"https://doi.org/10.32732/jcec.2024.13.1.1","url":null,"abstract":"With the advent of technological tools, systems, and mechanisms, the operating system in the construction industry has changed enormously. While technological advancements cover a broad area of software and hardware, those involved in data flow have significant roles in data sustainability. The data flow presupposes various requirements, interactions, consequences, and resource utilization and therefore plays a crucial role in construction organizations’ success. The importance of the data flow subject and the scarcity of pertinent studies provoked the current research, which aimed at the exploration of the data flow in construction companies and the effects of technological advancements on different stages of this flow. The overarching research question was, “what factors or processes generate data that do not add value to the construction organization.” In this context, the added value was considered a tradeoff between all consumed resources, including cost, human resources, hardware and software, and associated challenges on one side and the advantages of data generated on the other side. An extensive literature review was performed to examine the main milestones in the data-generative events in the construction industry, with a special emphasis on recent technological advancements such as BIM, VR, AR, and drones. In addition, a group of construction professionals who were in charge of processes was surveyed to produce empirical data for supplementary analysis. This paper contributes to the body of knowledge by providing a clear analysis of the data flow in construction companies which helps decision-makers to design and implement consistent and coherent data generative systems.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"49 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363813","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

Sea Surface Salinity Forecasting with a Comparison Studying Case of GMM-VSG and FB-Prophet Model 海面盐度预报与 GMM-VSG 和 FB-Prophet 模型的比较研究

Journal of Civil Engineering and Construction Pub Date : 2024-03-30 DOI: 10.32732/jcec.2024.13.1.12

Zhenlin Xiong, Elham Farazdaghi, Jena Jeong, N. Guillou, G. Chapalain

{"title":"Sea Surface Salinity Forecasting with a Comparison Studying Case of GMM-VSG and FB-Prophet Model","authors":"Zhenlin Xiong, Elham Farazdaghi, Jena Jeong, N. Guillou, G. Chapalain","doi":"10.32732/jcec.2024.13.1.12","DOIUrl":"https://doi.org/10.32732/jcec.2024.13.1.12","url":null,"abstract":"With the evolution of artificial intelligence, the utilization of machine learning algorithms for predicting hydrological data has gained popularity in scientific research, especially for the development and operational patterns of marine-related objects in coastal regions. Salinity analysis plays a crucial role in evaluating the resilience and health of marine ecosystems. Traditional numerical models, although accurate, require significant computational resources. Therefore, this study assesses the effectiveness of GMM-VSG proposed by Shanghai University and FB-Prophet created by Meta (Facebook) as rapid alternatives for simulating the nonlinear relationships between salinity and various parameters, like tide-induced free surface elevation, river flows, and wind speed. The algorithms were tested using an eight-year dataset collected at the MAREL buoy at the entrance to bay of Brest. Results indicate that, despite the simplicity of the input data, both algorithms successfully reproduced seasonal and semi-diurnal fluctuations in salinity. This underscores their potential as complementary tools for the ecological monitoring in estuarine environments.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"38 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140362110","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

Modified Bacteria Incorporated Geopolymer - A Qualitative Approach for an Eco-friendly, Energy-efficient and Self-healing Construction Material 改性细菌融入土工聚合物--生态友好、节能和自愈建筑材料的定性方法

Journal of Civil Engineering and Construction Pub Date : 2024-03-30 DOI: 10.32732/jcec.2024.13.1.44

Avishek Chatterjee, Nurul Alam, Trinath Chowdhury, B. Chattopadhyay

{"title":"Modified Bacteria Incorporated Geopolymer - A Qualitative Approach for an Eco-friendly, Energy-efficient and Self-healing Construction Material","authors":"Avishek Chatterjee, Nurul Alam, Trinath Chowdhury, B. Chattopadhyay","doi":"10.32732/jcec.2024.13.1.44","DOIUrl":"https://doi.org/10.32732/jcec.2024.13.1.44","url":null,"abstract":"Cement production consumes huge energy and creates environmental pollution. Cracks present in the cement-based concretes, deteriorate the structural longevity and requires costly repair. An eco-friendly and energy-efficient geopolymeric material is developed by incorporating modified bacterium cells, assuming that the developed material will be a cement-alternatives in construction industries in near future. Transformed Bacillus subtilis cells is incorporated to the alkali-activated fly ash only (100%) for making the geo-polymeric material. The mortar samples prepared by geopolymeric material are cured under various conditions to achieve the best possible energy-efficient curing process. Simulated cracks on mortars are developed by applying 50% (half) of predetermined breaking load for studying the self-healing phenomenon. Artificial cracks on mortars are created by introducing steel bar for studying crack-repairing activity. Mechanical strengths (compressive, tensile and flexural), water permeability, sulfate and chloride resistant activities along with the crack-repairing and the self-healing efficacy of the samples are characterized. Higher mechanical strengths and better longevity in terms of decreased water and chloride ions permeability and increased sulfate resistant activity are noted in the bacterium amended mortars. Ambient temperature modified heat curing process reveals the best possible energy-efficient curing condition. Images and micro-structures analyses show that several new phases (e.g., silicate, mullite, albite and alite etc.) are developed within the bacteria-amended mortars. Eco-friendliness of the bacterium is confirmed by toxicity study against rats models and human cell lines. We hypothesize that the developed geo-polymeric material is a suitable cement alternative in construction industries as well as an eco-friendly and energy efficient material.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"53 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363602","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

Application of Brick Dust and Sawdust in Concrete: A Movement to Sustainability 砖粉和锯末在混凝土中的应用:可持续发展的运动

Journal of Civil Engineering and Construction Pub Date : 2023-08-15 DOI: 10.32732/jcec.2023.12.3.152

Balikis O. Rabiu, O. Damdelen

{"title":"Application of Brick Dust and Sawdust in Concrete: A Movement to Sustainability","authors":"Balikis O. Rabiu, O. Damdelen","doi":"10.32732/jcec.2023.12.3.152","DOIUrl":"https://doi.org/10.32732/jcec.2023.12.3.152","url":null,"abstract":"It has become essential to recycle materials to create a sustainable environment, the application of using brick dust and glass powder leads to the reduction in the emission co2 and environmental landfills caused by the production of cement, disposal issues relating to solid waste, and demolished structures. The outcome of this research observes that the use of brick dust and sawdust in concrete helps in reducing the cost of the product, decreasing the amount of emitted CO2 as well as providing a way for environmental byproducts to be reduced by utilized for better sustaining of the ecosystem. In accordance with this study the evaluation of several properties of concrete was determined, the properties include compression test, split tensile test, compacting factor, slump for workability, density in the fresh and hardened state, and the ultrasonic pulse velocity of the concrete. The study used 10% brick dust as cement substitute and 5% by volume as substitute for fine aggregate. The outcome shows that the incorporation of brick dust increases the compressive strength and tensile strength, reduces workability, and has excellent quality of compactness which is 0.91, the compacting factor of just sawdust is seen to be 0.86, sawdust reduces the strength of concrete, and can be almost designated as light concrete due to the low density obtained and when both materials are added in one concrete the properties values as they have a different effect on the concrete separately. Overall, the application of this material in the same concrete as replacement proves beneficial and can be applied for construction.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124109952","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

Numerical Analysis of Flexural Performances of Composite Steel-Timber Beams under Fire Conditions 火灾条件下钢-木组合梁抗弯性能的数值分析

Journal of Civil Engineering and Construction Pub Date : 2023-08-15 DOI: 10.32732/jcec.2023.12.3.167

Zhiyuan Liu, Binsheng Zhang, Huijuan Jia, T. Kilpatrick

{"title":"Numerical Analysis of Flexural Performances of Composite Steel-Timber Beams under Fire Conditions","authors":"Zhiyuan Liu, Binsheng Zhang, Huijuan Jia, T. Kilpatrick","doi":"10.32732/jcec.2023.12.3.167","DOIUrl":"https://doi.org/10.32732/jcec.2023.12.3.167","url":null,"abstract":"Recently, a novel type of composite structure, composite steel-timber (CST) structure, has attracted much attention by combining steel and timber in an effective way to form composite structural components, which unitises the advantages of high strength and excellent ductility of steel and decent sustainability and fire resistance of timber. However, the existing research is lacking, especially in structural fire design and analysis. In this study, based on the sequentially coupled method, the commercial finite element software ABAQUS was used to numerically simulate the dynamic performances in the temperature field and the flexural behaviours in the displacement field for a typical CST beam with a steel element embedded within the Glulam and connected by adhesives and bolts under standard fire for two hours. In the numerical simulations, the temperature distributions within the CST beam were explored, and the flexural performances of the beam in the displacement field were examined. Through the comparative analysis, the temperature distributions in the embedded steel beam and the surrounding Glulam beam under one-hour standard fire verified the advantages of this type of CST beam in structural fire design. Specifically, under a 2-hour standard fire, the surrounding Glulam could still protect the embedded steel beam from sustaining too high temperatures, so as to retain most of its material properties and help maintain the bearing capacity of the whole structure and improve the refractory limit. Parametric studies on the fire resistance of the CST beam were also conducted by adjusting the bolt spacing and the protection thickness of the Glulam. The obtained results indicated that reducing the bolt spacing and the thickness of the Glulam protection layer would have an adverse effect on the temperature distributions in the embedded steel element to a large extent, and would eventually lead to its rapid heating and strength loss and the final failure of the whole CST structure.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122390148","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

Energy-efficient Optimization of Life-cycle Costs Based on BIM 基于BIM的全生命周期成本节能优化

Journal of Civil Engineering and Construction Pub Date : 2023-08-15 DOI: 10.32732/jcec.2023.12.3.142

Martin Moesl

引用次数: 0

Numerical Modelling of Structural Behavior of RC Frames With and Without Infill Walls Subjected to Progressive Collapse 带和不带填充墙钢筋混凝土框架在连续倒塌作用下结构性能的数值模拟

Journal of Civil Engineering and Construction Pub Date : 2023-08-15 DOI: 10.32732/jcec.2023.12.3.111

Sanjeev Bhatta, Jian Yang, Qing-feng Liu

{"title":"Numerical Modelling of Structural Behavior of RC Frames With and Without Infill Walls Subjected to Progressive Collapse","authors":"Sanjeev Bhatta, Jian Yang, Qing-feng Liu","doi":"10.32732/jcec.2023.12.3.111","DOIUrl":"https://doi.org/10.32732/jcec.2023.12.3.111","url":null,"abstract":"This paper aims to develop a numerical model of RC frame considering the same geometrical properties, material properties and boundary conditions in ABAQUS and validated with the experimental results comparing its force-displacement curve, damage pattern and stress and strain variations with the experimental outcomes. The use of infill walls increases the progressive collapse resistance force, mainly in the CAA. This is due to the addition of compressive action of infill walls to beam bending and CAA of RC frame. Plastic hinge was observed at the beam ends in case of RC bare frame. However, in the case of RC frame with infill wall, the plastic hinge was formed at some distance from middle joint interface and near the adjacent column joint on first floor and at some distance from adjacent column joint and near middle joint interface on second floor. Furthermore, in order to examine the effect of full height infill walls on progressive collapse resistance mechanism, RC frame with full height concrete block is modeled in ABAQUS and compare the results. It is seen that the RC frame with full height infill walls provides much higher progressive collapse resistance force in all stages i.e. beam mechanism stage, transient stage and catenary action stage.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129141885","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

Modelling of Inelastic Pentamode-Based Bridge Bearings Using Beam Elements 基于梁单元的非弹性五模态桥梁支座建模

Journal of Civil Engineering and Construction Pub Date : 2023-08-15 DOI: 10.32732/jcec.2023.12.3.126

Olga E. Sapountzaki, A. Kampitsis, N. Lagaros

{"title":"Modelling of Inelastic Pentamode-Based Bridge Bearings Using Beam Elements","authors":"Olga E. Sapountzaki, A. Kampitsis, N. Lagaros","doi":"10.32732/jcec.2023.12.3.126","DOIUrl":"https://doi.org/10.32732/jcec.2023.12.3.126","url":null,"abstract":"Metameterials have unique properties, which are mostly attributed to their geometrical configuration. Pentamodes, a subcategory of metamaterials, exhibit an almost zero shear elastic modulus while maintaining high compression stiffness, offering a behavior similar to that of a liquid, suggesting the potential application of pentamodes in seismic isolation. In this paper a real-life bridge bearing, composed of repetitive layers of pentamode unit cells in the horizontal and vertical axes is studied. The lattices are modelled using beam finite elements with an equivalent uniform diameter to ensuring a stiffness equal to that of the bi-cone rod. The importance of the chosen equivalent diameter is shown, as the assumption of an average diameter of the bi-cone may lead to significant discrepancies between the calculated stiffnesses. For small bi-cone diameters difference, and slender formulations, the error could grow up to 15% for the horizontal stiffness and up to 200% for vertical. For thick formulations the average diameter overestimates the horizontal stiffness by 3 times and the vertical by 4. These discrepancies grow exponentially as the bi-cone diameters difference increases. An elastoplastic material is selected. The bearing supporting the superstructure is subjected to a constant vertical weight load and a horizontal shear base load, due to seismic excitation. Under vertical loading plastic hinges are created in all the rods of the cell and bearing. However, under shear loading plastic hinges are rather initially created in the lowest nodes of the cell and the bearing.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132518101","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

Bond Characteristics of Deformed Steel Rebar in Palm Kernel Shell (PKS)-Rubberised Concrete Composite 棕榈仁壳-橡胶混凝土复合材料中变形钢筋的粘结特性

Journal of Civil Engineering and Construction Pub Date : 2023-05-15 DOI: 10.32732/jcec.2023.12.2.69

E. Boateng, C. K. Kankam, A. K. Danso, J. Ayarkwa, A. Acheampong

{"title":"Bond Characteristics of Deformed Steel Rebar in Palm Kernel Shell (PKS)-Rubberised Concrete Composite","authors":"E. Boateng, C. K. Kankam, A. K. Danso, J. Ayarkwa, A. Acheampong","doi":"10.32732/jcec.2023.12.2.69","DOIUrl":"https://doi.org/10.32732/jcec.2023.12.2.69","url":null,"abstract":"The bond mechanism between concrete and steel is an important input parameter in the design of reinforced concrete elements. The reuse of waste materials as aggregates in concrete has led to the discovery of different types of concrete with unique bond characteristics. This paper reports on the bond characteristics of concrete produced from waste automobile tire chips and palm kernel shell aggregates and deformed mild steel rebars. A total of 125 concrete cubes (150 x 150 x 150mm) with metal inserts were cast from 21 concrete mixes with varied content of PKS and waste automobile tire aggregates. Pullout test was carried out to evaluate the strength of the bond mechanism between the steel and the various concrete mixes. The results revealed that bond strength decreased with increasing PKS and tire content. Moreover, increasing the bar size and embedment length reduced the bond stress. The ratio of the bond stress and compressive strength was found to be averagely 63.88%. Regarding the bond failure mechanism, it was identified that failure of the specimen occurred through either rebar pullout or tensile splitting of the concrete. Based on the results obtained, it was concluded that PKS and tire can be used as partial replacement of granite aggregates in concrete since the resultant concrete can develop adequate bond with steel bars in structural applications.","PeriodicalId":243788,"journal":{"name":"Journal of Civil Engineering and Construction","volume":"04 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130235675","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