Journal of building engineering最新文献

Experimental investigation on the performance of ground granulated blast furnace slag and copper slag blended recycled aggregate concrete exposed to elevated temperatures

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-04-01 DOI: 10.1016/j.jobe.2025.112531

Anasuya Sahu , Sanjay Kumar , Adarsh Srivastav , Harsh Anurag

{"title":"Experimental investigation on the performance of ground granulated blast furnace slag and copper slag blended recycled aggregate concrete exposed to elevated temperatures","authors":"Anasuya Sahu , Sanjay Kumar , Adarsh Srivastav , Harsh Anurag","doi":"10.1016/j.jobe.2025.112531","DOIUrl":"10.1016/j.jobe.2025.112531","url":null,"abstract":"<div><div>The current experimental programme examines the residual performance of recycled aggregate concrete (RAC) under elevated temperatures, with partial replacement of fine aggregate by copper slag, followed by the substitution of cement with ground granulated blast furnace slag (GGBFS). RAC was prepared by replacing natural coarse aggregate with recycled coarse aggregate (RCA) at substitution levels of 0 %, 33 %, 66 %, and 100 %. Among these, the 33 % RCA replacement demonstrated superior mechanical properties and was selected for further investigation. Subsequently, the industrial wastes like copper slag and GGBFS were used for replacing fine aggregate and cement up to 60 % to escalate the residual characteristics of RAC mixes prepared with 33 % RCA. All the specimens were exposed at temperature level of 30 °C, 200 °C, 400 °C, 600 °C and 800 °C respectively and assessed their residual compressive strength, split tensile strength, elastic modulus, and failure behavior by conducting laboratory experiments. Test results concluded that, the GGBFS and CS blended RAC mixture achieved greater resistance to deterioration of strength properties compared to the control mixture at higher temperature. The combination of 33 % RCA, 40 % CS, and 40 % GGBFS exhibited superior residual performance over all the mixes and established grater fire-resistant to concrete. Further, the microstructural study of different RAC mixtures revealed that the addition of CS and GGBFS strengthened the RAC matrix by creating a dense calcium silicate hydrate gel.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112531"},"PeriodicalIF":6.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced carbonation of steel slag blocks using various chemical additives

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-04-01 DOI: 10.1016/j.jobe.2025.112518

Jiaxin Deng , Dong Zhang , Lei Gu , Huihui Yuan , Xiaoxiang Zhang

{"title":"Enhanced carbonation of steel slag blocks using various chemical additives","authors":"Jiaxin Deng , Dong Zhang , Lei Gu , Huihui Yuan , Xiaoxiang Zhang","doi":"10.1016/j.jobe.2025.112518","DOIUrl":"10.1016/j.jobe.2025.112518","url":null,"abstract":"<div><div>Traditional carbonation methods for steel slag typically rely on pure CO<sub>2</sub> and elevated pressures, posing practical challenges due to specific CO<sub>2</sub> transport and kinetic limitations. This study explores the carbonation properties of steel slag blocks under ambient conditions using a 30 % CO<sub>2</sub> concentration. To accelerate carbonation, the effectiveness of various chemical additives was examined, including chelating agents, inorganic alkali activators, and sulfates. Results demonstrate that incorporating chemical additives, particularly EDTA and its salt derivatives, significantly increases the compressive strength of carbonated steel slag blocks. All tested chemicals facilitated increases in CO<sub>2</sub> absorption. Specifically, Na<sub>2</sub>SO<sub>4</sub> and Na<sub>2</sub>CO<sub>3</sub> increased CO<sub>2</sub> uptake by 30.6 % and 25.6 % at 12 h, respectively. A logarithmic model effectively characterized the CO<sub>2</sub> uptake kinetics, revealing that initial CO<sub>2</sub> uptake (β) usually correlates inversely with the carbonation rate (α) over time. Na<sub>2</sub>CO<sub>3</sub> and Na<sub>2</sub>SO<sub>4</sub> exhibited faster carbonation kinetics throughout the process due to the accelerated formation of C-(A)-S-H structures that are more reactive to CO<sub>2</sub> than the original mineral phases. However, excessive carbonation rates resulted in the formation of a dense carbonate layer on the block surfaces, limiting further CO<sub>2</sub> diffusion. These findings underscore the potential of chemical additives to optimize the carbonation process, contributing to eco-friendly, high-performance building materials.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112518"},"PeriodicalIF":6.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical study on progressive collapse resistance of novel fully assembled concrete beam-column connections

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-31 DOI: 10.1016/j.jobe.2025.112516

Kai Wang , Jingang Xiong , Moqiang Xiong , Liangzhong Chen , Chenxin Yao , Jiawen Ying

{"title":"Experimental and numerical study on progressive collapse resistance of novel fully assembled concrete beam-column connections","authors":"Kai Wang , Jingang Xiong , Moqiang Xiong , Liangzhong Chen , Chenxin Yao , Jiawen Ying","doi":"10.1016/j.jobe.2025.112516","DOIUrl":"10.1016/j.jobe.2025.112516","url":null,"abstract":"<div><div>In this paper, two novel fully assembled concrete beam-column connections are proposed, in which prefabricated beams are connected to the steel sleeves of restrained columns using bolted flanges (PC1) or bolt-cover plates (PC2). Pseudo-static tests were performed to evaluate the progressive collapse resistance of these dry connections. Additionally, the experiment results revealed that PC1 experienced out-of-plane instability failure after reaching the peak load, with its bearing capacity predominantly sustained by the flexural-compressive arch action (F-CAA). In contrast, PC2 underwent the F-CAA, transition, and catenary action (CA) stages, ultimately failing due to tensile fracture of the steel connector. The maximum chord rotation of PC1 and PC2 at the end of the test were 0.05 rad and 0.204 rad, respectively. Subsequently, finite element (FE) models were developed using ABAQUS, which agreed well with the test results. The mechanical behaviour of PC1 following the F-CAA stage was investigated through numerical simulation. It was found that PC1 exhibited a direct transition from the F-CAA stage to the CA stage, ultimately failing due to tensile fracture of the bolts, with a maximum chord rotation of 0.25 rad. Both the experimental and numerical results confirmed that PC1 and PC2 exhibit excellent deformation capacity. Finally, parametric analyses were conducted to investigate the effects of concrete strength, bolt diameter, web bolt distribution, and flange end widening modes on PC1 and PC2. The findings provide valuable insights and design guidance for optimising the connections and dynamic tests.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112516"},"PeriodicalIF":6.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical and seismic performance of lower-through- diaphragm and upper-external-plate connections to wall-shaped multi-box columns

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112505

Shi Cao , Ganping Shu , Ying Qin , Baofeng Zheng , Wenfu Zhang

{"title":"Mechanical and seismic performance of lower-through- diaphragm and upper-external-plate connections to wall-shaped multi-box columns","authors":"Shi Cao , Ganping Shu , Ying Qin , Baofeng Zheng , Wenfu Zhang","doi":"10.1016/j.jobe.2025.112505","DOIUrl":"10.1016/j.jobe.2025.112505","url":null,"abstract":"<div><div>A novel connection with lower-through-diaphragm (LTD) and upper-external-plate (UEP) for wall-shaped multi-box (WSMB) column is proposed in this paper. To evaluate the seismic performance, quasi-static low-cycle loading tests were conducted on three full scale connection specimens, considering the effects of different configurations. The study examined failure modes, hysteretic curves, rotation capacity, strength and stiffness degradation, ductility, energy dissipation, and panel zone deformations. The experimental results indicated that the proposed connection exhibited reliable seismic performance, while the reduced beam section (RBS) specimen showed the best ductility and energy dissipation. The primary failure areas were observed in the sections where the UEP connected the beam flange to the WSMB column. Additionally, a finite element model (FEM) was developed and validated based on the test results, and a detailed discussion on the stress distribution in critical areas was conducted. The box connected to the beam was found bearing a greater load than the others, and the load primarily occurred through the bilateral areas of the UEP and LTD. Also, a parametric analysis was conducted to investigate the behavior of the connection. Theoretical equations for the capacity of connection with and without RBS were derived based on yield line theory. The calculated results closely match the experimental and FEM results, indicating that they are valuable tools for determining the ultimate capacity of connection. Overall, the findings of this research provide a valuable reference for this type of connection.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112505"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic performance analysis and damage evaluation of shear wall and frame shear wall structures under multi-dimensional excitations

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112464

Yang Cheng , Haoxiang He , Weixiao Xu , Weisong Yang

{"title":"Seismic performance analysis and damage evaluation of shear wall and frame shear wall structures under multi-dimensional excitations","authors":"Yang Cheng , Haoxiang He , Weixiao Xu , Weisong Yang","doi":"10.1016/j.jobe.2025.112464","DOIUrl":"10.1016/j.jobe.2025.112464","url":null,"abstract":"<div><div>To systematically explore the seismic performance of shear walls and frame-shear wall structures under multi-directional seismic actions, three shear wall specimens and one frame-shear wall specimen are fabricated and the quasi-static loading tests are carried out. The shear wall specimens are loaded in oblique direction, in-plane direction, and out-of-plane direction, while the frame-shear wall specimen is loaded in the in-plane direction. The macroscopic damage phenomena of the specimens are analyzed to investigate the influence of the typical performance indicators such as crack propagation, hysteresis curves, skeleton curves, and stiffness degradation curves. Subsequently, the equation for calculating comprehensive damage indices, which can accurately reveal the damage evolution process and final damage severity of shear wall components, is proposed. Based on the calibrated experiments, the appropriate finite element software is used to simulate quasi-static loading from multiple angles on shear wall and frame-shear wall specimens. The time-history analysis are conducted on the frame-shear wall structural system from multiple angles to comparatively analyze the seismic performance and failure modes of the two types of structures under different loading angles. The results indicate that the bearing capacity, the energy dissipation capacity and the lateral stiffness of shear walls and frame-shear wall structures decrease as the loading angle increases. Significant changes in crack development and failure modes are observed under out-of-plane loading for both types of structures, with the structural damage degree increasing with larger angles. There is an urgent need for further analysis and enhancement of the seismic performance of these structures under multi-directional loading conditions.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112464"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approximating CFD simulations of natural ventilation: A deep surrogate model with spatial attention mechanism

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112425

Matthew R. Vandewiel , Dagimawi D. Eneyew , Anwar D. Awol , Miriam A.M. Capretz , Girma T. Bitsuamlak

{"title":"Approximating CFD simulations of natural ventilation: A deep surrogate model with spatial attention mechanism","authors":"Matthew R. Vandewiel , Dagimawi D. Eneyew , Anwar D. Awol , Miriam A.M. Capretz , Girma T. Bitsuamlak","doi":"10.1016/j.jobe.2025.112425","DOIUrl":"10.1016/j.jobe.2025.112425","url":null,"abstract":"<div><div>Building natural ventilation is a sustainable approach to reducing energy use and emissions from buildings by minimizing reliance on energy-intensive systems. Computational Fluid Dynamics (CFD) simulations are often used to predict natural ventilation, enhance building design, and improve indoor air quality. However, CFD simulations are time-consuming and computationally resource-intensive due to the number of spatial and temporal discretization and iterations required to solve the governing Reynolds Averaged Navier–Stokes (RANS) equations. Additionally, CFD simulations require specialized knowledge, limiting the number of concepts designers can test. This study proposes a UNet-based surrogate model with a spatial attention mechanism to overcome the limitation of CFD simulations by approximating RANS simulations of natural ventilation in cross-ventilated buildings. The proposed surrogate model was trained with data from CFD simulations performed on buildings with multiple opening sizes and wind from different directions. The model was then evaluated while comparing it with the commonly used UNet with channel-wise attention as a baseline. Based on the evaluation results, the Spatial Attention UNet model outperformed the baseline model in predicting velocity flow fields, achieving a mean absolute percentage error of 4.7% compared to 14.7% for the whole domain and 17.0% compared to 32.1% within the building. Furthermore, the trained model achieved a tremendous speed, reducing more than an hour of CFD simulation into orders of milliseconds. The result proved that the proposed model could save designers effort and time while allowing them to test several design concepts quickly, sacrificing only a small amount of accuracy.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112425"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744969","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 seismic performance of novel prefabricated metro station roof-to-wall connection nodes

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112508

Zhenghao Liu , Xianfeng Ma , Junjie Wang , Linhai Lu , Haihua Zhang , Han Han , Dingyi Zhou , Weida Wang

{"title":"Evaluation of seismic performance of novel prefabricated metro station roof-to-wall connection nodes","authors":"Zhenghao Liu , Xianfeng Ma , Junjie Wang , Linhai Lu , Haihua Zhang , Han Han , Dingyi Zhou , Weida Wang","doi":"10.1016/j.jobe.2025.112508","DOIUrl":"10.1016/j.jobe.2025.112508","url":null,"abstract":"<div><div>To further reduce construction time and costs, minimize construction risks, and mitigate the environmental impacts of prefabricated metro stations, this study proposes a novel connection structure for such stations. In this structure, the enclosure is utilized to participate in the load-bearing of the main structure, uniquely retaining temporary internal concrete support as part of the roof. To investigate the seismic performance of this novel node, three groups of scaled quasi-static model tests were conducted. These tests analyzed and compared the effects of three different connection methods (namely, retaining the first concrete support as part of the roof structure, using a cast-in-place roof structure, and employing a prefabricated roof structure) on the seismic performance of the node. The test results indicate that the primary failure mode of the node is localized compressive failure of the concrete at the connection points between the internal nodes. Compared to cast-in-place and prefabricated roof connections, the novel structure exhibits significant advantages in terms of seismic performance. Retaining the first concrete support and incorporating it as part of the roof enhances the overall integrity and ductility of the node area, thereby improving its seismic performance. This result provides a new perspective for the seismic design and construction of prefabricated metro stations, promoting the application of innovative prefabricated structures in such facilities.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112508"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anatomy of methods for measuring life cycle carbon emission of built environment

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112506

Haoran Lei , Wei Yang , Kevin Zhang , Chun-Qing Li

{"title":"Anatomy of methods for measuring life cycle carbon emission of built environment","authors":"Haoran Lei , Wei Yang , Kevin Zhang , Chun-Qing Li","doi":"10.1016/j.jobe.2025.112506","DOIUrl":"10.1016/j.jobe.2025.112506","url":null,"abstract":"<div><div>The built environment, e.g., buildings and infrastructures, is responsible for over 79 % of global carbon emissions, prompting an urgent need to reduce its carbon emissions. Adopting life cycle assessment for buildings and infrastructures to measure their whole life carbon emission is crucial in achieving carbon neutrality. This paper critically examines methods explicitly measuring life cycle carbon emissions of built environment. Various life cycle carbon emission assessment standards are analysed and compared and their differences are quantified in two case studies. It is found that the inconsistent system boundary definitions, biogenic carbon calculation methods and end-of-life modelling methods are obstacles to measuring and managing carbon emissions of the built environment. It is also found that the necessity of developing a unified life cycle carbon emission assessment method for buildings and infrastructure is compelling. Future directions of developing a consistent and accurate life cycle carbon emission assessment method are pointed out. These outcomes will raise the awareness of inconsistency in various methods with a view to accurately measuring carbon emissions of the built environment.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112506"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746988","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

Punching shear behavior of GFRP-reinforced concrete flat slabs using finite element analysis

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112507

Aroob Alateyat, Raghad Awad, Abdulrahman Metawa, M. Talha Junaid, Salah Altoubat, Mohamed Maalej, Samer Barakat

{"title":"Punching shear behavior of GFRP-reinforced concrete flat slabs using finite element analysis","authors":"Aroob Alateyat, Raghad Awad, Abdulrahman Metawa, M. Talha Junaid, Salah Altoubat, Mohamed Maalej, Samer Barakat","doi":"10.1016/j.jobe.2025.112507","DOIUrl":"10.1016/j.jobe.2025.112507","url":null,"abstract":"<div><div>Glass fiber-reinforced polymer (GFRP) bars are an alternative to traditional steel reinforcement, which is increasingly used in flat slab applications. A better understanding of the punching shear response of such slabs is needed to promote further confidence in using GFRP bars as reinforcement for flat slabs. The current paper uses finite element analysis (FEA) software to develop a 3D model with the appropriate element type and mesh and constitutive modeling of concrete and reinforcement to investigate the punching shear behavior of interior GFRP-reinforced concrete flat slabs. The developed FEA model is calibrated and verified by ten slabs experimentally tested for punching shear, including two calibration samples tested by the authors and eight verification samples from the literature. The proposed FEA model accurately predicts the ultimate load, cracking patterns, reinforcement strains, load-deflection curves, and overall slab behavior consistent with the experimental results. The punching shear capacity predicted by the proposed FEA model is compared against three international design codes. The study found that the FEA model is a reliable tool for predicting the punching shear behavior of GFRP-reinforced flat slabs.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112507"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Imaging-based detection and classification of corrosion damages in reinforced concrete using ultrasonic shear waves

IF 6.7 2区工程技术

Journal of building engineering Pub Date : 2025-03-28 DOI: 10.1016/j.jobe.2025.112490

Sai Teja Kuchipudi , Debdutta Ghosh , Abhijit Ganguli

{"title":"Imaging-based detection and classification of corrosion damages in reinforced concrete using ultrasonic shear waves","authors":"Sai Teja Kuchipudi , Debdutta Ghosh , Abhijit Ganguli","doi":"10.1016/j.jobe.2025.112490","DOIUrl":"10.1016/j.jobe.2025.112490","url":null,"abstract":"<div><div>Corroded steel reinforcements in concrete members reduce the structural capacity and compromise safety. Prior detection of rebar corrosion and severity assessment of affliction helps in understanding durability and safety of Reinforced Concrete structures. An ultrasonic shear wave imaging-based approach is presented in this paper to determine the severity of rebar corrosion on a laboratory scale. The scattered wave data in the time domain is used for subsurface image reconstruction using a variant of the Synthetic Aperture Focusing Technique. The rebar has been subjected to an accelerated corrosive environment, and simultaneously, the deterioration process has been monitored using ultrasonic imaging at different stages of corrosion. The image amplitudes of the rebar signatures are clustered by the k-means technique to classify the corrosion severity. The observed changes in reconstructed rebar patterns at the final stage of corrosion are corroborated by examining the condition of extracted rebars from the test specimens. The measured corrosion potential measurements at the end of each stage support the ultrasonic imaging results. The deterministic imaging-based workflow presented in this study serves as a useful technique to assess and classify the severity of corrosion in reinforced concrete structures.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"105 ","pages":"Article 112490"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0