Developments in the Built Environment最新文献_第3页

Experimental and numerical investigations on the residual bond capacity of RC flexural members exposed to fire considering twin rebars 考虑孪生钢筋的受火钢筋弯曲构件残余粘结能力的实验和数值研究

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-30 DOI: 10.1016/j.dibe.2024.100551

Arunita Das , Akanshu Sharma , Josipa Bošnjak

引用次数: 0

Toward an innovative function-oriented assessment methodology (FOAM) for evaluating the functional condition of buildings during the operation and maintenance phase 采用创新的以功能为导向的评估方法（FOAM），在运行和维护阶段评估建筑物的功能状况

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-23 DOI: 10.1016/j.dibe.2024.100548

Veronica Royano , Vicente Gibert , Carles Serrat , Jacek Rapinski

{"title":"Toward an innovative function-oriented assessment methodology (FOAM) for evaluating the functional condition of buildings during the operation and maintenance phase","authors":"Veronica Royano , Vicente Gibert , Carles Serrat , Jacek Rapinski","doi":"10.1016/j.dibe.2024.100548","DOIUrl":"10.1016/j.dibe.2024.100548","url":null,"abstract":"<div><div>This paper introduces a foundational approach toward defining a Function-Oriented Assessment Methodology (FOAM) for evaluating the functional condition of buildings during the operation and maintenance phase. Although various national classification systems exist, a unified international system for organizing construction elements has not been widely adopted. To bridge this gap, the paper proposes adopting an international standard-based classification system for identifying objects within a function-oriented structure. Traditional inspections often focus on damage, overlooking the functional condition of construction elements. This research addresses these limitations with a comprehensive methodological approach tailored to assess functional condition. It employs a multiple-choice questionnaire adapted from international rating scales to ensure consistency and minimize subjectivity among inspectors. A case study validates the effectiveness of this strategic framework, demonstrating high consistency and accuracy in evaluating functional conditions. Overall, this research lays the groundwork for FOAM, offering a clear path for its broader application in the built environment.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100548"},"PeriodicalIF":6.2,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142318648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A building operational carbon emissions database of 362 Chinese cities: Construction process and spatiotemporal characteristic analysis 中国 362 个城市的建筑运行碳排放数据库：建筑过程与时空特征分析

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-21 DOI: 10.1016/j.dibe.2024.100546

Qi Wang , Xinyu Jia , Yang Zhao , Hao Zhou , Xinghui Zhang , Borong Lin , Cong Zhang

{"title":"A building operational carbon emissions database of 362 Chinese cities: Construction process and spatiotemporal characteristic analysis","authors":"Qi Wang , Xinyu Jia , Yang Zhao , Hao Zhou , Xinghui Zhang , Borong Lin , Cong Zhang","doi":"10.1016/j.dibe.2024.100546","DOIUrl":"10.1016/j.dibe.2024.100546","url":null,"abstract":"<div><div>The existing calculation methods of city building carbon emissions based on energy audits, city statistics and energy balance sheets have problems such as time-consuming and labour-intensive, missing data and large errors, resulting in the lack of a complete and accurate database of city building carbon emissions in China. To address this, the calculation method based on city statistical data (CSD-M) and the calculation method based on provincial energy balance sheets (PEB-M) were used to calculate the carbon emissions from city buildings. The PEB-M was corrected using CSD-M results, reducing the error to 12.8%. Based on CSD-M and modified PEB-M, a database of building carbon emissions in 362 Chinese cities was developed. Finally, the spatio-temporal characteristics of city building carbon emissions in China were analysed, and the current situation of carbon emissions in different cities was compared. This study provides a basis for future carbon reduction policies tailored to city characteristics.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100546"},"PeriodicalIF":6.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002278/pdfft?md5=0e3e966ead1c0a7a2b740327edcefaee&pid=1-s2.0-S2666165924002278-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Explainable ensemble learning graphical user interface for predicting rebar bond strength and failure mode in recycled coarse aggregate concrete 用于预测再生粗骨料混凝土中钢筋粘结强度和破坏模式的可解释集合学习图形用户界面

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-21 DOI: 10.1016/j.dibe.2024.100547

Celal Cakiroglu , Tanvir Hassan Tusher , Md. Shahjalal , Kamrul Islam , AHM Muntasir Billah , Moncef L. Nehdi

{"title":"Explainable ensemble learning graphical user interface for predicting rebar bond strength and failure mode in recycled coarse aggregate concrete","authors":"Celal Cakiroglu , Tanvir Hassan Tusher , Md. Shahjalal , Kamrul Islam , AHM Muntasir Billah , Moncef L. Nehdi","doi":"10.1016/j.dibe.2024.100547","DOIUrl":"10.1016/j.dibe.2024.100547","url":null,"abstract":"<div><div>Novel study deploys robust machine learning algorithms using newly built comprehensive dataset to predict reinforcing rebar-to-recycled coarse aggregate concrete (RCA) bond strength and failure mode. Prior investigations have solely concentrated on bond strength, resulting in a limited comprehension of the bond failure pattern. Considering the increasing significance of sustainable construction methods, it is crucial to examine both the failure pattern and bond strength to expand the versatility of RCA in various reinforced concrete structures. Accordingly, XGBoost, CatBoost, Random Forest, and LightGBM were trained for this purpose. Model performance was appraised using various statistical metrics, while failure classification performance was assessed using accuracy, recall, and precision indicators. Model performance was ranked using Copeland's algorithm. Feature importance was quantified using SHAP. Coefficient of determination of 0.91 was achieved by XGBoost in predicting bond strength, outperforming other nine analytical models in literature. Failure mode was predicted with accuracy of 94% by CatBoost, XGBoost, and LightGBM. Embedment length and compressive strength features had greatest influence on bond strength and failure mode, respectively. User-friendly graphical interface was developed to harvest ML models in real-world engineering practice. Online free access accurately assigns to any given combination of input features corresponding accurate rebar bond strength and failure mode.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100547"},"PeriodicalIF":6.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of rheo-viscoelasticity of magnesium-silicate-hydrate mixes incorporating different superplasticizers 掺入不同超塑化剂的硅酸镁水合物流变-粘弹性评估

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-15 DOI: 10.1016/j.dibe.2024.100544

Yiming Peng, Cise Unluer

{"title":"Evaluation of rheo-viscoelasticity of magnesium-silicate-hydrate mixes incorporating different superplasticizers","authors":"Yiming Peng, Cise Unluer","doi":"10.1016/j.dibe.2024.100544","DOIUrl":"10.1016/j.dibe.2024.100544","url":null,"abstract":"<div><p>This study investigated rheo-viscoelastic behaviors of MgO-SiO<sub>2</sub> pastes with three phosphate additives (sodium hexametaphosphate (SHMP), sodium trimetaphosphate (STMP), and sodium orthophosphate (SOP)) as superplasticizers. Static yield stress, dynamic yield stress, median differential viscosity, thixotropic loop area, structural recovery rate, and non-destructive structural build-up were analyzed. Furthermore, assessment of hydration and particle dispersion stability was facilitated by employing isothermal calorimetry, XRD, DTG, and zeta potential techniques. SHMP significantly decreased the static and dynamic rheology, thixotropy, and viscoelastic evolution. Samples incorporating 2 wt% SOP exhibited enhanced rheological parameters, particularly static yield stress, owing to increased brucite formation and a denser microstructure in the fresh paste. Adsorption of phosphate additives on MgO surfaces inhibited formation of brucite and improved interparticle electrostatic repulsion, thereby increasing suspension stability. High-efficiency adsorption of SHMP on MgO surfaces, coupled with the retardation of brucite nucleation-and-growth, and enhancement in suspension stability, greatly restrained the rheo-viscoelastic evolution of MgO-SiO<sub>2</sub> system.</p></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100544"},"PeriodicalIF":6.2,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002254/pdfft?md5=8ca1b00fda46ca15ea7e1c0a9a7bb052&pid=1-s2.0-S2666165924002254-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142242071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of accelerated carbonation on fine cement paste aggregates 加速碳化对水泥浆细集料的影响

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-13 DOI: 10.1016/j.dibe.2024.100545

Marión Bustamante , Viviana Letelier , Bruno Wenzel , Cristian Torres , Estefania Loyola , José Marcos Ortega

{"title":"Effect of accelerated carbonation on fine cement paste aggregates","authors":"Marión Bustamante , Viviana Letelier , Bruno Wenzel , Cristian Torres , Estefania Loyola , José Marcos Ortega","doi":"10.1016/j.dibe.2024.100545","DOIUrl":"10.1016/j.dibe.2024.100545","url":null,"abstract":"<div><div>Accelerated carbonation is suggested as a potential alternative for carbon dioxide sequestration, which also improves the microstructure of recycled concrete aggregates. In this study, the carbonation parameters of model aggregates derived from cement pastes with two different water/cement ratios (i.e., 0.5 and 0.7) were evaluated in order to maximize the benefits of the carbonation process on their density and absorption. For this purpose, in a first phase, the initial moisture content of the model aggregates and the reaction time were evaluated. Furthermore, in a second phase of mortar production, the fraction of fine natural aggregates was replaced, considering each type of unprocessed and carbonated model aggregate at volumetric replacement percentages of 50% and 100%, varying the amount of water in the mortar mix to maintain a similar workability in all the series. In this way, the properties of the eight series of mortars are evaluated in comparison with the control series made only with natural aggregates. The results indicate that the accelerated carbonation process positively influences density and absorption in the model aggregate. Regarding the parameters of the accelerated carbonation environment analyzed, for a higher w/c ratio in the original model aggregate, higher initial water content was necessary for the carbonation process to be efficient. As for the mechanical performance of the mortars with model aggregate, the series that incorporated model aggregate aggregates with a w/c ratio of 0.5 achieved better mechanical behavior compared to the series replacing model aggregate with a w/c ratio of 0.7; this was related to the formation of a more compact matrix in the mortar with model aggregate of cementitious pastes.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100545"},"PeriodicalIF":6.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002266/pdfft?md5=5d4dcc19089573e989774c1e4de9c9fb&pid=1-s2.0-S2666165924002266-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing sustainable practices: Transient plane source methodology for analyzing thermophysical properties and enhancement wood as a thermal insulator 推进可持续做法：分析热物理性质的瞬态平面源方法，提高木材作为热绝缘体的性能

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-12 DOI: 10.1016/j.dibe.2024.100539

Rupali Tiwari , Vlastimil Boháč , Richard Hrčka , Anton Yi Ma , Mattias K. Gustavsson , Luigi Todaro , Petar Antov , Lubos Kristak

{"title":"Advancing sustainable practices: Transient plane source methodology for analyzing thermophysical properties and enhancement wood as a thermal insulator","authors":"Rupali Tiwari , Vlastimil Boháč , Richard Hrčka , Anton Yi Ma , Mattias K. Gustavsson , Luigi Todaro , Petar Antov , Lubos Kristak","doi":"10.1016/j.dibe.2024.100539","DOIUrl":"10.1016/j.dibe.2024.100539","url":null,"abstract":"<div><p>The research aims on thermophysical properties of an ancient silver fir wood using transient plane heat source method in three directions of wood defined under isotropic environment. Crucial parameters studied at room temperature include thermal conductivity, thermal diffusivity, thermal effusivity. Analysis of measured thermal responses were done with respect to the full range of time window interval and shortened interval chosen for fitting by model. The depth of heat penetration was investigated with an emphasis on the criteria for evaluating the thermal response published literature (Boháč et al., 2000). The findings support the challenges and understanding of the interaction of wood's orthogonality loaded when interacting with different heating powers (25, 40, 50, 70) (m W) with time (s). The inhomogeneous structure for different levels of thermal energy provided valuable insights into the complex nature of wood and essential for applications requiring heat management such as preservation, construction, material engineering, in specific direction of wood structure.</p></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100539"},"PeriodicalIF":6.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002205/pdfft?md5=6f0c15c8c133b42227c2a079e2e9fa19&pid=1-s2.0-S2666165924002205-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterisation of a novel sustainable wood-geopolymer masonry units 新型可持续木质地聚合物砌体单元的特性分析

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-12 DOI: 10.1016/j.dibe.2024.100540

Firesenay Zerabruk Gigar , Amar Khennane , Jong-Leng Liow , Biruk Hailu Tekle , Zongjun Li

{"title":"Characterisation of a novel sustainable wood-geopolymer masonry units","authors":"Firesenay Zerabruk Gigar , Amar Khennane , Jong-Leng Liow , Biruk Hailu Tekle , Zongjun Li","doi":"10.1016/j.dibe.2024.100540","DOIUrl":"10.1016/j.dibe.2024.100540","url":null,"abstract":"<div><p>Masonry units have been fundamental to building construction for over 6000 years, making them one of the oldest and most widely used materials in the industry. However, their production using ordinary Portland cement has significant environmental impacts, including high carbon dioxide emissions and depletion of natural resources. This highlights the need for more sustainable alternatives. One promising option is the use of recycled aggregates from construction and demolition waste in masonry unit manufacturing. This paper investigates the use of chipped waste timber as aggregates, bound together with geopolymer cement made from industrial by-products such as fly ash and slag. The result is a new type of masonry units, referred to as wood geopolymer masonry units (WGMUs), which were evaluated against established standards and compared with conventional masonry units (CMUs). The innovative WGMUs demonstrated improved ductility and reduced density compared to CMUs, making them easier to handle and lighter in construction. They also have a distinctive, rustic texture and consistent dimensions that meet Australian standards. Although WGMUs exhibited higher water absorption and drying contraction due to their wood content, these characteristics generally remain within acceptable limits, supporting their potential as eco-friendly construction materials.</p></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100540"},"PeriodicalIF":6.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002217/pdfft?md5=682c591356b13a552fd1c9d0440a293d&pid=1-s2.0-S2666165924002217-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142242072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of the impact of model complexity on indoor daylight spectral simulations 模型复杂性对室内日光光谱模拟影响的实验研究

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-12 DOI: 10.1016/j.dibe.2024.100543

Jaka Potočnik, Luka Pajek, Mitja Košir

{"title":"Experimental investigation of the impact of model complexity on indoor daylight spectral simulations","authors":"Jaka Potočnik, Luka Pajek, Mitja Košir","doi":"10.1016/j.dibe.2024.100543","DOIUrl":"10.1016/j.dibe.2024.100543","url":null,"abstract":"<div><p>Daylight spectral simulation is crucial for designing functional, healthy spaces and predicting light interactions. It is essential for accurate non-image-forming effects of light calculations. This study addresses the knowledge gap in reproducing indoor daylight spectral conditions in the built environment. Using varying levels of geometry (LOG) and information (LOI), simulation accuracy was assessed by comparing it with experimental data from two offices over three days with cloudy and clear sky conditions. The lowest accuracy was found with high LOI and low LOG simulations. For the highest accuracy, specific material spectral properties are needed, while spectrally-neutral materials at low LOG produced comparable results. Simulations near and facing windows were the most accurate. The study concludes that to reproduce indoor daylight spectral conditions, modelling should use either the lowest or highest geometry and information complexity, depending on available modelling time and required accuracy.</p></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"20 ","pages":"Article 100543"},"PeriodicalIF":6.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666165924002242/pdfft?md5=423fef9b0e18904522af6e23b9cd2b2e&pid=1-s2.0-S2666165924002242-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142242070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of waste glass powder on printability and mechanical properties of 3D printing geopolymer concrete 废玻璃粉对 3D 打印土工聚合物混凝土可打印性和机械性能的影响

IF 6.2 2区工程技术

Developments in the Built Environment Pub Date : 2024-09-11 DOI: 10.1016/j.dibe.2024.100541

Zhaoliang Sheng , Binrong Zhu , Jingming Cai , Jinsheng Han , Yamei Zhang , Jinlong Pan

引用次数: 0