Developments in the Built Environment最新文献

{"title":"Behavioral analysis of steel I-beams under repeated dynamic loads: Impact of various impactor head types","authors":"Zeynep Yaman ,&nbsp;Yusuf Sümer ,&nbsp;Elif Ağcakoca ,&nbsp;Mahyar Maali ,&nbsp;Abdulkadir Cüneyt Aydın","doi":"10.1016/j.dibe.2025.100620","DOIUrl":"10.1016/j.dibe.2025.100620","url":null,"abstract":"<div><div>The dynamic loadings to which the structural element is repeatedly exposed cause more damage due to the fatigue effect. In this article, the damage cases formed under the effect of the impact load acting on the weak axis of I-section steel beams under repeated impact loads are investigated and the effect of the geometric shape of the falling weight on the element behavior is evaluated by experimental and numerical methods. A 2000 mm long IPE160 section simply supported beam is subjected to impact load in the weak axis direction. The 100 kg impact load is applied from a height of 2200 mm with a hammer head having three different geometric shapes (rectangular, circular and triangular). Three-dimensional finite element models of the 6 experimental studies were analyzed using Abaqus Explicit software. In order to determine the effect of the geometric shape of the falling weight on the beam behavior under the effect of repeated load; five parameters such as displacement, acceleration, support reaction, stress distribution and plastic strain were investigated. The displacement, acceleration and support reaction formed in the beams were numerically investigated by means of finite element models and compared with the experimental results. The results obtained showed that the maximum deflection and acceleration occurred in the beams hit by the triangle-headed impact crusher. In addition, the largest plastic deformation and stress distribution were observed in the tests performed using triangle-headed impact crushers. In the series I (rectangular), II (circular), III (triangular) test series, the displacement value increased by 44%, 79% and 100%, respectively, compared to the first impact. It is seen that the 2nd degree effects play an important role in the increase of the damage level in the second impacts. It was determined that the maximum reaction force tended to increase from Series I to Series III. This shows that reducing the contact area of the falling weight significantly increases the reaction forces.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100620"},"PeriodicalIF":6.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096936","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}

{"title":"Automated image-based identification and consistent classification of fire patterns with quantitative shape analysis and spatial location identification","authors":"Pengkun Liu ,&nbsp;Shuna Ni ,&nbsp;Stoliarov Stanislav I ,&nbsp;Pingbo Tang","doi":"10.1016/j.dibe.2025.100612","DOIUrl":"10.1016/j.dibe.2025.100612","url":null,"abstract":"<div><div>Fire patterns, consisting of fire effects that offer insights into fire behavior and origin, are currently classified based on investigators' visual observations, leading to subjective interpretations. This study proposes a quantitative fire pattern classification framework to support fire investigators, aiming for consistency and accuracy. The framework integrates four components. First, it leverages human-computer interaction to extract fire patterns from surfaces, combining investigator expertise with computational analysis. Second, it employs an aspect ratio-based random forest model to classify fire pattern shapes. Third, fire scene point cloud segmentation enables identification of fire-affected areas and mapping 2D fire patterns to 3D scenes for spatial relationships analysis. Lastly, spatial relationships between fire patterns and elements support an interpretation of fire scenes. These components provide pattern analysis that synthesizes qualitative and quantitative data. The framework's fire pattern shape classification results achieve 93% precision on synthetic data and 83% on real fire patterns.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100612"},"PeriodicalIF":6.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096941","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}

{"title":"Exploring the value of digital twins for information management in highway asset maintenance","authors":"Mengtian Yin ,&nbsp;Varun Kumar Reja ,&nbsp;Ran Wei ,&nbsp;Ioannis Brilakis ,&nbsp;Brian Sheil ,&nbsp;Federico Perrotta ,&nbsp;Alix Marie d'Avigneau ,&nbsp;Linjun Lu","doi":"10.1016/j.dibe.2025.100614","DOIUrl":"10.1016/j.dibe.2025.100614","url":null,"abstract":"<div><div>Highway agencies face challenges managing dispersed asset data across maintenance processes and information systems, hindering efficient retrieval of dynamic road information for timely interventions. A Digital Twin (DT)-based Information Management Framework (IMF) offers a promising solution based on a Foundation Data Model, Reference Data Libraries, and Integration Architecture. However, it is currently unclear how DT models of highway infrastructure systems based on a connected data ecosystem can be used in maintenance and how they benefit stakeholders. This paper describes results from a survey exploring DTs' potential in highway maintenance, starting with interviews with 20 experts to understand current processes, followed by a questionnaire survey to identify phases, features, applications, and use cases perceived as important by practitioners for road DTs. 183 responses reveal that DTs are widely deemed useful for asset deterioration prediction, strategy-making for routine maintenance planning, and scenario design for road investigation and repair in project-level maintenance.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100614"},"PeriodicalIF":6.2,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096942","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}

{"title":"Dealkalization Behavior and Leaching Mechanisms of Red Mud with Simulated Aluminum Profile Wastewater","authors":"Yicheng Tan ,&nbsp;Xiuzhen Zhang ,&nbsp;Zhichao Liu ,&nbsp;Fazhou Wang ,&nbsp;Shuguang Hu","doi":"10.1016/j.dibe.2025.100613","DOIUrl":"10.1016/j.dibe.2025.100613","url":null,"abstract":"<div><div>This study presents a new waste treatment strategy by dealkalizing red mud with simulated aluminum profile wastewater. We investigate the leaching behavior and the effect of the wastewater dropping rate. During dealkalization, the slurry pH significantly decreases while conductivity increases, indicating efficient dealkalization. The increase in Na⁺ in the filtrate and the decrease in Na₂O in the residue confirm the dissolution of alkali, especially structural alkali. The dealkalization efficiency reaches 64.4%. Increasing the dropping rate accelerates the reaction, enhancing efficiency without altering the process. The mechanism involves Al³⁺ combining with hydrolyzed AlO₂⁻ to precipitate Al(OH)₃, effectively removing structural alkali, which is the main restrictive factor in red mud. After dealkalization, the utilization rate of red mud increases from 5% to 15%, positively impacting economic and environmental aspects, particularly land occupation, soil salinization, and human health.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100613"},"PeriodicalIF":6.2,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096996","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}

{"title":"Microbial-induced mineral carbonation: A promising approach for improving Carbon sequestration and performance of steel slag for its engineering utilization","authors":"Jue Li ,&nbsp;Qingmeng Hou ,&nbsp;Xinqiang Zhang ,&nbsp;Xiaobin Zhang","doi":"10.1016/j.dibe.2025.100615","DOIUrl":"10.1016/j.dibe.2025.100615","url":null,"abstract":"<div><div>Steel slag, a by-product of steel production, accumulates in large quantities and poses significant environmental risks due to heavy metal ion content. Therefore, using pre-treated steel slag in construction offers a sustainable solution. This review analyzed microbial-induced mineral carbonation (MIMC) as a promising approach for steel slag utilization, highlighting the enhanced principles and influential factors of steel slag carbonation. MIMC achieves superior carbonation efficiency (up to 90–95%) under mild conditions, ensuring environmental sustainability, safety, and cost-effectiveness. Key factors include microbial characteristics, steel slag properties, and process conditions. The review discussed how MIMC can enhance the properties of carbonated steel slag by modifying mineralogy and microstructure, improving physical and mechanical attributes, and optimizing environmental performance. Moreover, the application of MIMC-treated steel slag in engineering construction was examined. Nonetheless, further research is essential to overcome challenges, fully comprehend the mechanisms and environmental impacts of MIMC, and advance sustainable development in the steel industry.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100615"},"PeriodicalIF":6.2,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096934","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}

{"title":"Enhancing quality inspection efficiency and reliability of unscreened recycled coarse aggregates (RCA) streams using innovative mobile sensor-based technology","authors":"Cheng Chang ,&nbsp;Francesco Di Maio ,&nbsp;Rajeev Bheemireddy ,&nbsp;Perry Posthoorn ,&nbsp;Abraham T. Gebremariam ,&nbsp;Peter Rem","doi":"10.1016/j.dibe.2025.100611","DOIUrl":"10.1016/j.dibe.2025.100611","url":null,"abstract":"<div><div>Recycled coarse aggregates (RCA) from End-of-Life (EoL) concrete face resistance due to inconsistent quality. To address this, a mobile, containerized sensor-based inspection system is developed, capable of processing over 100 tons of RCA per hour. Using advanced 3D scanning and laser-induced breakdown spectroscopy (LIBS), the system ensures reliable real-time analysis of particle size distribution (PSD) (Root Mean Square Error: &lt;5.5%) and contaminant detection (Accuracy: 0.94). Incremental learning techniques dynamically update chi-square distribution parameters as new spectral data becomes available, refining models continuously without full retraining and sustaining high classification performance. Monitoring data are recorded on radio frequency identification (RFID) tags, enhancing traceability. This innovation improves efficiency compared to traditional methods, supporting sustainable practices in the construction industry. Its applications also extend to related fields such as mining, waste management, and resource recovery, contributing to the circular economy, reducing reliance on natural aggregates, and promoting environmentally friendly infrastructure development.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100611"},"PeriodicalIF":6.2,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096935","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}

{"title":"Vision-based real-time progress tracking and productivity analysis of the concrete pouring process","authors":"Ruoxue Zhang ,&nbsp;Ruyu Deng ,&nbsp;Zhao Zhang ,&nbsp;Yihua Mao","doi":"10.1016/j.dibe.2025.100609","DOIUrl":"10.1016/j.dibe.2025.100609","url":null,"abstract":"<div><div>Regular progress monitoring is essential to keep the project on track consistently, but tracking progress on a daily basis fails to reveal operational issues, thus preventing timely management interventions. The automation and precision of real-time progress monitoring are critical for the concrete pouring process, significantly impacting both the efficiency and overall quality of the project. To address the common detection challenges like fuzzy boundaries and partial occlusion, an improved semantic segmentation-based framework was proposed for real-time progress tracking. The ECA mechanism and ASPP module were integrated into the U-Net to achieve precise segmentation. Subsequently, the actual progress was evaluated, and a work state identification algorithm was utilized to detect productivity-related issues, such as delays and interruptions. The approach was validated on a real construction project, achieving 90.85% precision in segmentation. This study provides theoretical references for real-time progress monitoring and presents a feasible approach for construction productivity management.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100609"},"PeriodicalIF":6.2,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096997","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}

{"title":"Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects","authors":"Marta Urdanpilleta ,&nbsp;Itsaso Leceta ,&nbsp;Alexander Martín-Garín ,&nbsp;José Antonio Millán-García ,&nbsp;Pedro Guerrero ,&nbsp;Koro de la Caba","doi":"10.1016/j.dibe.2025.100608","DOIUrl":"10.1016/j.dibe.2025.100608","url":null,"abstract":"<div><div>In the search for sustainable and environmentally friendly alternatives for building insulation materials, biocomposites of sheep wool embedded in a polymer matrix were prepared by freeze-drying, combining soy protein with 7, 10, 15 and 20 wt % sheep wool. In addition, in order to protect these biocomposites against insects, coffee grounds were incorporated into the formulation. Thermal conductivity characterization revealed values in the order of other natural insulating materials. Additionally, coefficients of absorption at normal incidence, with values up to 0.96, showed a competitive performance of the biocomposites, in the same line of the samples without coffee grounds. Furthermore, the test of resistance against insects, with 2B classification according to ISO 3998, showed a good protection against keratophagous insects, especially against carpet beetle (<em>Anthrenus flavipies</em>). Consequently, biocomposites with an entirely renewable and eco-friendly composition, which valorize biowaste from different sources, were found to be functional as thermal and acoustic insulators towards more sustainable materials in the building sector.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100608"},"PeriodicalIF":6.2,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096938","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}

{"title":"Addition of silane nanoparticles combined with mechanical activation for efficient reuse of sulfidic tailings for concrete construction","authors":"Alieh Saedi,&nbsp;Ahmad Jamshidi-Zanjani","doi":"10.1016/j.dibe.2025.100606","DOIUrl":"10.1016/j.dibe.2025.100606","url":null,"abstract":"<div><div>This study proposes mechanical activation process to structurally modify the tailings containing high sulfide content. X-ray diffraction analysis indicated that the mechanical activation of the tailings caused a phase transformation in the samples, and the alite phase formed in the control sample transformed to the hatrurite phase in the sample containing 20% activated tailings. The presence of silane nanoparticles enhances the hydration process, forming hydrated calcium silicate gels, resulting in a substantial reduction in porosity. According to the results of the toxicity characteristic leaching procedure, the reduction of heavy metals leaching was observed as a conclusion of the combination of tailings activation and the addition of nano-silane. As a result of the bonding between silane nanoparticles and the hydration products, the sample incorporating 20% and 40% activated tailings demonstrated approximately 30% and 15% higher strength, respectively, compared to the control sample after a curing period of 90 days.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100606"},"PeriodicalIF":6.2,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096937","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}

{"title":"Non-sintered artificial aggregates made of ternary alkali-activated materials with natural carbonated MSWI fly ash incorporations","authors":"Jing Gong ,&nbsp;Mengmeng Wang ,&nbsp;Guo Yang ,&nbsp;Han Guo ,&nbsp;Jie Yao ,&nbsp;Yaxin Tao ,&nbsp;Jing Zhong ,&nbsp;Yubo Sun","doi":"10.1016/j.dibe.2025.100603","DOIUrl":"10.1016/j.dibe.2025.100603","url":null,"abstract":"<div><div>This study investigates the utilization of municipal solid waste incineration (MSWI) fly ash (MFA) to produce non-sintered artificial aggregates (AAs) through alkali activation. To enhance its suitability, MFA underwent a six-month natural carbonation process to remove leachable salts and stabilize heavy metals, during which significant phase transformations were observed. The AAs were fabricated using ternary alkali-activated materials (AAMs) with varying MFA proportions through spray pelletization. Although higher MFA content reduced the strength of the AAs, this effect was counterbalanced by increasing the silicate modulus in the activators. The resulting AAs demonstrated mechanical strength comparable to or exceeding that of natural granite aggregates and recycled aggregates derived from concrete demolition waste. Furthermore, the study examined the reaction products and microstructural characteristics of the AAs. Leachate analysis confirmed compliance with environmental standards for heavy metal content, highlighting the potential of these AAs as a sustainable alternative aggregate resource for the construction industry.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100603"},"PeriodicalIF":6.2,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096240","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}