Journal of building engineering最新文献

{"title":"Synergistic effect of micro and nano cellulosic fillers on thermal insulation and mechanical strength properties of compressed earth bricks from phosphate mining by-products","authors":"Khaoula Mouih ,&nbsp;Rachid Hakkou ,&nbsp;Mohammed Mansori ,&nbsp;Jaafar Ghanbaja ,&nbsp;Yassine Taha ,&nbsp;Hamid Kaddami","doi":"10.1016/j.jobe.2025.112023","DOIUrl":"10.1016/j.jobe.2025.112023","url":null,"abstract":"<div><div>The present research explores the feasibility of reusing phosphate mining waste rocks in the production of sustainable, and eco-friendly compressed earth bricks (CEBs). The study focuses on evaluating the combined impact of incorporation of date palm fibers (DPF) and commercial cellulose nanocrystals (CNCs) on the physical, mechanical, and thermal properties of CEBs, opening up prospects for potential applications in the field of sustainable construction. The key findings indicate that incorporating 10 % DPF into the brick matrix led to a significant reduction of 36 % in dry compressive strength and increased water absorption, while thermal conductivity significantly decreased by 74.76 %. However, the strength reduction can be mitigated by controlling DPF size, with 500 μm microfibers yielding a compressive strength of 14.10 MPa and reduced water absorption (13.20 g/cm²·min¹/²). Furthermore, the addition of small amounts of CNC induced a reinforcing effect, substantially, improving the mechanical properties of the bricks. A hybrid reinforcement approach using 0.8 % CNC and 10 % DPF resulted in CEBs with a very low water absorption coefficient, indicating excellent resistance to water-related degradation. Microstructural analysis via SEM and BET validated these findings, showing the formation of macropores with 10 % DPF and decreased pore diameter with CNC inclusion. These findings highlight the potential of DPF/CNC reinforcement in transforming phosphate mining waste rocks into high-performance, sustainable building materials, offering a pathway to reduce reliance on conventional energy-intensive materials while addressing resource management challenges.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112023"},"PeriodicalIF":6.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349140","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}

{"title":"Seismic damage recognition of structural and non-structural components based on convolutional neural networks","authors":"Weiping Wen ,&nbsp;Tingfei Xu ,&nbsp;Jie Hu ,&nbsp;Duofa Ji ,&nbsp;Yanan Yue ,&nbsp;Changhai Zhai","doi":"10.1016/j.jobe.2025.112012","DOIUrl":"10.1016/j.jobe.2025.112012","url":null,"abstract":"<div><div>Image-based rapid recognition of seismic damage of structural and non-structural components is significant for the emergency response and recovery decision making in the post-earthquake environment. A novel seismic damage rapid recognition method of structural and non-structural components based on convolutional neural networks (CNNs) is proposed in this study. Firstly, a seismic damage image dataset of reinforced concrete (RC) frame structural and non-structural components is built. Secondly, the damage recognition method of transfer learning (TL)-based AlexNet is proposed, which is proven to be superior through the contrast experiment with GoogLeNet and ResNet. Based on it, the optimal ceiling damage recognition model with an accuracy of over 93 % is established through studying the hyperparameters. Thirdly, an improved TL-based AlexNet is proposed to further enhance the accuracy of identifying seismic damage to components, achieving optimal recognition accuracies of 91.0 %, 95.5 %, and 80.8 % for beams and columns, ceilings, and infill walls, respectively. Finally, a graphical user interface (GUI) is designed and developed to break down professional barriers and broaden the user base. This study realizes the goal of damage recognition of multiple components of structures rationalistically and normatively.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112012"},"PeriodicalIF":6.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349169","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}

{"title":"Integration of BIPV technology with modular prefabricated building - A review","authors":"Yuxin Bao ,&nbsp;Changying Xiang","doi":"10.1016/j.jobe.2025.111940","DOIUrl":"10.1016/j.jobe.2025.111940","url":null,"abstract":"<div><div>The sustainable transformation of the building industry is crucial for achieving regional and global energy goals. Among various emerging low-carbon technologies for the reduction of carbon emissions in buildings' life cycles, modular prefabricated buildings demonstrate significant energy-saving potential during the design and construction phases, while Building-integrated photovoltaics (BIPV) technology can harness solar energy for electricity generation during the operational phase. This paper reviewed 63 empirical studies on BIPV envelope prototypes over the past decade. It explored the potential for these prototypes to evolve into prefabricated modules, considering design applications and performance outcomes. 80 papers related to modular prefabricated buildings were briefly reviewed to get a general view of the research focus in this field. The review examines 12 existing studies on prefabricated BIPV technology based on practical applications to assess the technical feasibility and energy-saving advantages of integrating modular prefabricated buildings with BIPV systems. Lastly, based on different stages in a project, potential opportunities and challenges have been analyzed and future development directions were outlined as well.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111940"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348738","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":"An overview of practical challenges and current advances related to the use of calcium aluminate cement in various concrete applications","authors":"Waqas Latif Baloch ,&nbsp;Hocine Siad ,&nbsp;Mohamed Lachemi ,&nbsp;Mustafa Sahmaran","doi":"10.1016/j.jobe.2025.112015","DOIUrl":"10.1016/j.jobe.2025.112015","url":null,"abstract":"<div><div>Calcium aluminate cement (CAC) offers a promising alternative to Portland cement, particularly in applications requiring rapid setting, high early strength, and lower CO₂ emissions. However, its broader adoption has been hindered by challenges related to the conversion process and the formation of unstable hydrates, which impact its long-term performance and durability. This review focuses on addressing these challenges by investigating the potential of various strategies to mitigate the conversion process, optimization of hydration dynamics, and durability of CAC-based materials. Specifically, the review seeks to review how can hybrid systems containing gypsum, supplementary cementitious materials (SCMs), and nanomaterials be leveraged to improve the conversion resistance, phase assemblage, and long-term durability of CAC, while also highlighting the role of these additives in enhancing the microstructural stability. The paper also consolidates recent research on fresh mix properties of CAC-systems while also addressing susceptibility to shrinkage and porosity. Furthermore, the paper explores CAC's potential for sustainable applications, including its compatibility with industrial waste materials, its role in reducing carbon emissions, and its use in innovative construction technologies such as 3D printing and geopolymer systems. Despite these promising advancements, the review identifies gaps in understanding the long-term performance of CAC in real-world environmental conditions, particularly its behavior in aggressive environments. Future research is needed to address these gaps, optimize the formulation of CAC systems, and to develop more effective strategies for large-scale applications.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112015"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349138","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}

{"title":"Stability of double-skin truss-reinforced composite shear wall under axial compression","authors":"Ying Qin ,&nbsp;Yang Liu ,&nbsp;Guolin Yang ,&nbsp;Guangen Zhou ,&nbsp;Xiongliang Zhou ,&nbsp;Arumi Izaazwazini Ramli","doi":"10.1016/j.jobe.2025.111930","DOIUrl":"10.1016/j.jobe.2025.111930","url":null,"abstract":"<div><div>Traditional reinforced concrete shear walls have the disadvantages of significant weight, limited ductility, and prolonged construction cycles. Double-skin composite shear walls, which consist of two steel plates and the infilled concrete, effectively address these issues. However, these walls feature thinner cross-sections than traditional concrete shear walls and thus, the stability of the walls under axial compression is quite important especially at the bottom of the high-rise buildings. In this paper, the stability of a newly proposed double-skin truss-reinforced composite shear wall under axial compression was investigated. Axial compressive tests were conducted on seven specimens and the failure modes were obtained. The influences of wall thickness, wall width, steel plate thickness, and boundary condition on the stability of the specimens were evaluated. Finite element models were established using ABAQUS, and the accuracy of the model was verified by comparing with the experimental results. Parametric analysis was further performed to investigate the influences of parameters such as wall height, wall width, wall thickness, steel plate thickness, and truss spacing on the ultimate strength of the wall. Meanwhile, the influences of wall width, wall thickness, steel plate thickness, and truss spacing on the stability coefficient <span><math><mrow><mi>φ</mi></mrow></math></span> were explored according to the stability coefficient <span><math><mrow><mi>φ</mi></mrow></math></span>-normalized slenderness ratio <span><math><mrow><msub><mi>λ</mi><mi>n</mi></msub></mrow></math></span> curves. It was also found that the current design codes, including GB 50936-2014, ANSI/AISC 360-22, EN 1994-1-1, CECS 624–2019, and T/CECS 926–2021, cannot be applied for the design of stability of the double-skin truss-reinforced composite shear walls. Therefore, a method for the design of stability of this type of composite shear walls was proposed. Good agreement was observed between the predictions by the established equations and the data from both tests and finite element results.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111930"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334791","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}

{"title":"Silk fibroin as a multifunctional admixture: Exploring the synergistic effects with nanomaterials in cementitious composites","authors":"Wentao Yang ,&nbsp;Xuanzhe Zhang ,&nbsp;Xianfeng Wang ,&nbsp;Zhipeng Fu ,&nbsp;Guangming Zhu ,&nbsp;Feng Xing","doi":"10.1016/j.jobe.2025.112000","DOIUrl":"10.1016/j.jobe.2025.112000","url":null,"abstract":"<div><div>The synthesis of silk fibroin (SF) composite for eco-friendly concrete additives addresses the growing need for sustainable building materials. This study investigated the role of SF in modifying the hydration and mechanical properties of silicate cement, and the potential of SF as a multifunctional admixture in cementitious composites. The incorporation of SF into silicate cement modifies key properties, acting effectively as a water reducer, retarder, and air-entraining agent, thus facilitating the optimisation of pore structure and matrix uniformity. Building upon these advantages, the study further investigates the synergistic effects of SF combined with nanosilica (NS) or Ti₃C₂T_x (MXene) concerning rheological properties, pore distribution, cement hydration kinetics, and microstructure. Rheological evaluations indicate that the SF-SiO₂ group substantially decreased the yield stress and viscosity of the cement paste to approximately 24.8 Pa and 0.13 Pa s, while conserving about 20 % of water resources. In the SF-MXene group, the proportion of gel pores significantly increased to 84.7 % at 28 days, refining pore distribution by minimising deleterious pores and improving gel pore uniformity. Concurrently, the additional nucleation sites were supplied by NS and MXene with a high specific surface area, accelerating the hydration process and affecting subsequent exothermic reactions. This study highlights the viability of SF composites in promoting cleaner production within the construction industry, presenting a sustainable alternative.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112000"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348329","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}

{"title":"Enhancing temperature resistance of calcium aluminate cement through carbonated steel slag","authors":"Zhaohou Chen ,&nbsp;Jiangshui Cui ,&nbsp;Yang Liu ,&nbsp;Xiaohuan Jing ,&nbsp;Bingyang He ,&nbsp;Daqiang Cang ,&nbsp;Lingling Zhang","doi":"10.1016/j.jobe.2025.111956","DOIUrl":"10.1016/j.jobe.2025.111956","url":null,"abstract":"<div><div>The conversion from metastable phase to stable phase in calcium aluminate cement (CAC) caused by temperature increase can lead to an increase in porosity and a decrease in compressive strength. This study investigated the effects of carbonated steel slag (CSS) on the hydration, microstructure, and resistance to temperature fluctuations of CAC at temperatures ranging from 20 °C to 70 °C. The results showed that the incorporation of CSS leads to the formation of carbonate-AFm (or AFt) phases (hemicarboaluminate (Hc) and monocarboaluminate (Mc)). The increase of CSS content promotes the hydration of CA and CA₂ to Hc and Mc (Hc/Mc), and weakens the hydration to C₃AH₆ and AH₃ at 70 °C. Therefore, the impact of the conversion from CAH₁₀ phase to C₃AH₆ phase on CAC is weakened. As the CSS content increases from 0 to 40 %, the loss of compressive strength of the samples decreases from 45.7 % to 10.4 % at 70 °C for 7 days, corresponding to a 77.2 % increase in temperature fluctuation resistance. Meanwhile, the addition of CSS can alleviate the increase in pore volume of CAC at 70 °C, and even lead to a decrease in CSS-40 sample.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111956"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158320","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}

{"title":"Effect of fiber content on fracture behavior of UHPFRCC by acoustic emission technique","authors":"Chen Chen ,&nbsp;Xudong Chen","doi":"10.1016/j.jobe.2025.111979","DOIUrl":"10.1016/j.jobe.2025.111979","url":null,"abstract":"<div><div>The paper aims to study strain-harden and strain-soften fracture behavior of ultra-high performance fiber reinforced cementitious composites (UHPFRCC) with different fiber content based on acoustic emission (AE) technology. Three-point bending fracture test was performed on UHPFRC with 0 %, 1 %, and 2 % fiber content, and the fracture mechanical properties of UHPFRCC were analyzed. Meanwhile, the AE cumulative parameters, location, b-value, and crack mode were used to identify the fracture behavior of UHPFRCC. The result showed that with the increase of fiber content, the peak load and toughness of UHPFRCC increase, but the fiber content has little effect on the peak load displacement and ductility. Furthermore, cumulative AE parameters can distinguish strain-harden stage directly of UHPFRCC. And there is an exponential relationship between cumulative AE parameters and fiber content. Additionally, with the increase of fiber content, the width of fracture process zone and width of damage zone increases, and the reduction of b-value gradually decreases. The tensile crack mode is dominant in the fracture process of UHPFRCC by the k-means method, but the fiber content has little effect on the fracture mode of UHPFCC. This research can provide a theoretical basis for crack propagation and non-destructive testing of UHPFRCC in practical engineering.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111979"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372780","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}

{"title":"Influence of curing regimes and duration on the early strength development of fibers based reactive powder concretes","authors":"Subhash C. Yaragal,&nbsp;Harshkumar V. Annigeri,&nbsp;Nithish Krishna K M,&nbsp;Chandrashekar Allikatti,&nbsp;Gopika Dinesh,&nbsp;M.H. Prashanth","doi":"10.1016/j.jobe.2025.112020","DOIUrl":"10.1016/j.jobe.2025.112020","url":null,"abstract":"<div><div>Curing regimes play a crucial role in enhancing the early strength and overall performance of reactive powder concrete (RPC). This study focuses on the influence of different curing regimes on the early strength development of various fibers based RPC mixes. RPC mixes were produced adopting four-stage mixing method. The hot water curing (HWC) and steam curing (SC) regimes achieved a strength of 84 MPa at 24 and 48 h, respectively, being equivalent to the strength of RPC under 28 days of conventional method of water curing (WC). The combined curing (CC) (1 day HWC at 100 °C followed by 7 days of oven hot air curing at 200 °C) and air curing (AC) resulted in the highest and lowest strength of 120 and 74 MPa, while hot air curing (HAC) gave a strength of 96 MPa. Different fibers adopted showed negligible influence on the variation in strength. SEM results revealed that HWC and SC produced predominantly a plate-like tobermorite and dense thick fibrous tobermorite. The HAC and CC regimes showed the presence of tobermorite and xonotlite in the diffraction pattern, whilst HWC and SC displayed tobermorite alone. Nuclear magnetic resonance spectroscopy (NMR) results showed that there is an increase in the hydration degree for hydrothermally treated curing regimes (SC, HWC, and CC) except heat treated (HAC), resulting in higher strength. At higher temperature, the existing chain-like silicates get converted to sheet-like silicates, increasing the mean chain length of C-S-H and degree of connectivity. In summary, the CC regime can be adopted in the construction industry, as it stands out as the most favourable one among all the curing methods for attaining high early strength.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112020"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372864","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}

{"title":"A unified simplified numerical model for large-scale regional seismic simulation of building structures","authors":"Haifeng Bu ,&nbsp;Huanjun Jiang ,&nbsp;Yasushi Sanada","doi":"10.1016/j.jobe.2025.112004","DOIUrl":"10.1016/j.jobe.2025.112004","url":null,"abstract":"<div><div>To compute seismic responses of a large number of building structures quickly in an area, a unified simplified nonlinear multi-degree-of-freedom finite element model is proposed in this study for reinforced concrete (RC) structures, including frame structures, frame-shear wall structures, and shear wall structures. Corresponding parameter determination method of the simplified model is also provided. Compared with existing models, the proposed model is more convenient to determine parameters for typical RC building structures in large-scale areas. Then, the accuracy and efficiency of the proposed model are verified by comparison between the simulation results and the corresponding experimental results for one RC frame structure and one frame-shear wall structure. Finally, the capability and practicability of the proposed model are verified by a case study of the simulation of seismic responses of over 800 RC building structures in a community.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112004"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349139","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}