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Impact of mineralization in Hevea brasiliensis fibers on the production of extruded fiber-cements with cellulosic micro/nanofibrils (MFC/NFC) and quartzite residues J. Build. Eng. (IF 6.7) Pub Date : 2024-07-10 Felipe Gomes Batista, Dayane Targino de Medeiros, Danillo Wisky Silva, Adriano Reis Prazeres Mascarenhas, Mário Vanoli Scatolino, Ianca Oliveira Borges, Lorran de Sousa Arantes, Maria Alice Martins, Francisco Tarcísio Alves Junior, Gustavo Henrique Denzin Tonoli, José Benedito Guimarães Junior, Lourival Marin Mendes
New processes and applications for waste generated in forestry and mineral activities favor the circular economy and reduce pressure on conventional raw materials, thus promoting the sustainability of activities. This research aimed to apply quartzite powder to replace limestone and fibers and cellulosic micro/nanofibrils (MFC/NFC) from as reinforcement in extruded fiber-cement. To improve fiber/matrix
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Properties of fresh and hardened cement-based materials with waste glass as supplementary cementitious material: A review J. Build. Eng. (IF 6.7) Pub Date : 2024-07-10 V.A. Franco-Luján, S. Ramírez-Arellanes, A. Gomez-Sanchez, A.E. Pérez-Ramos, E.S. Cruz-García, H. Cruz-Martínez
The demand for cement is constantly growing; however, the industry is facing many challenges due to the excessive extraction of raw material, water demand, and CO emissions. To mitigate these challenges, cement can be partially substituted by recycled materials such as waste glass with pozzolanic properties. This substitution allows for the production of Portland cement (PC)-based materials that are
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Graphene family (GFMs), carbon nanotubes (CNTs) and carbon black (CB) on smart materials for civil construction: Self-cleaning, self-sensing and self-heating J. Build. Eng. (IF 6.7) Pub Date : 2024-07-09 Isis Nayra Rolemberg Prudente, Hericles Campos dos Santos, Jander Lopes Fonseca, Yslaine Andrade de Almeida, Iara de Fátima Gimenez, Ledjane Silva Barreto
The development of building materials capable of combining structural features with additional functionalities is a modern demand for creating smart and multifunctional structures. This involves integrating properties such as self-cleaning, self-sensing, and self-heating with the conventional functions of building structures, including facades, structural elements, roadways, among others. The arising
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Effect of recycled concrete aggregates on the punching strength of slab-column connections without shear reinforcement J. Build. Eng. (IF 6.7) Pub Date : 2024-07-09 Maurício P. Ferreira, Iana I.R. Damasceno, Manoel J.M. Pereira Filho, Aarão F. Lima Neto, Marcos H. Oliveira, Jayron A. Ribeiro Júnior
This paper presents the results of tests on six reinforced concrete slab-column connections. The slabs were octagonal, centrally supported on square columns, and concentrically loaded at their borders. The tests investigated the effects of replacing natural coarse aggregates with recycled concrete aggregates. The experimental results were also compared to resistance estimates from ACI 318 (2019) and
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Dynamic mechanical properties of one-part ultra-high performance geopolymer concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-07-09 Yuanzheng Lin, Chaobin Yang, Hanyuan Shi, Yingfan Wang, Zhouhong Zong, Haimin Qian, Shenyang Hou, Shaolong Li, Tianle Chen, Jingming Cai
Geopolymer has been recognized as a promising construction material offering performance comparable to traditional cementitious materials while significantly reducing carbon dioxide emissions. Notably, the recent development of “one-part geopolymer”, which transforms the alkaline activator solution into a solid activator powder, has greatly enhanced construction convenience. One-part ultra-high performance
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Exploring impacts of thermal and lighting conditions on office workers’ subjective evaluations, cognitive performance and EEG features in multi-person offices J. Build. Eng. (IF 6.7) Pub Date : 2024-07-09 Rui Sun, Shuangyu Xu, Yunsong Han, Dian Zhuang, Bin Yan, Cheng Sun
Modern office workers spend lots of time in multi-person offices. For human-centered building design and operation, it is essential to investigate the influence of coupled physical environments on occupants' well-being and task performance. In this study, to assess impacts of thermal and lighting environments on brainworkers, experiments were conducted under 64 conditions of different temperature,
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Experimental studies on bond behaviour of steel rebar with different rib patterns in concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-07-09 S. Krishnaveni, Senthil Rajendran
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Indoor PM2.5 and building energy consumption in nine typical residential neighborhoods in Nanjing under different ventilation strategies caused by traffic-related PM2.5 dispersion J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Hanning Wang, Xin Guo, Junlu Yang, Zhi Gao, Mingjie Zhang, Fusuo Xu
Traffic-related PM seriously endangers human health and affects the energy consumption of building ventilation systems. This study investigates the impact of different ventilation strategies caused by traffic-related PM dispersion on indoor PM concentration and building energy consumption of nine typical residential neighborhoods in Nanjing using EnergyPlus software. Results of a third-floor apartment
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Crossflow microsand filtration in cooling tower systems to control fouling in heat exchanger devices J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Vaishali Ashok, Faezeh Absalan, Alain Silverwood, Etienne Robert, Dominique Claveau-Mallet, Emilie Bédard
In the context of global warming, there is a growing need for high-performance heat, ventilation and air conditioning systems. Fouling is a challenge, affecting heat exchanger operational and energetic performance. Side stream filtration can be used to improve water quality by reducing particle concentration in the system. The aim of this study was to assess a crossflow microsand filtration unit's
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A contextual approach to estimate household activities in instrumented dwellings J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Ly Huynh Phan, Thomas Recht, Jérôme Malvestio, Hugo Viot, Stéphane Ploix, Laurent Mora
Occupants and their activities are important in computer-aided systems such as energy management or energy simulation in residential buildings. Numerous studies have extensively examined detailed household activities at the population level using time-use surveys. Despite the considerable influence of contexts on occupants' activities, a limited number of studies focus on individual households due
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Retrofitting HVAC systems for enhanced energy performance and resilience in university data center room J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Nitesh Singh, Indra Permana, Alya Penta Agharid, Fu-Jen Wang
Data centers have been extensively implemented globally to satisfy the increasing need for IT services. Small data centers with insufficient cooling require much power to keep IT equipment running reliably. As a result, retrofitting has become an efficient method to increase energy efficiency and save operating costs. This study examines the impact of retrofitting on energy efficiency in a data center
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Use of Semi-Indirect Evaporative Cooling in HVAC systems: experimental study J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Luca Socci, Javier M. Rey-Hernandez, Andrea Rocchetti, Fernando Dominguez-Muñoz, Alberto Rey-Hernandez, Francisco J. Rey-Martínez
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Elucidating the role of recycled concrete aggregate in ductile engineered geopolymer composites: Effects of recycled concrete aggregate content and size J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Changqing Wang, Zhiyu Zhang, Xin Liu, Youchao Zhang, Zhiming Ma
Utilizing recycled fine aggregate (RFA) as silica sand replacement for ductile engineered geopolymer composites (EGC) provides a high value-added approach to recycling concrete waste and reduces the needs for high-cost silica sand. RFA contains abundant active alkaline substances which can promote the secondary geopolymerization of EGC. Substituting RFA for silica sand can improve EGC micro-characteristics
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Performance of fly ash/GGBFS based geopolymer concrete with recycled fine and coarse aggregates at hot and ambient curing J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Shahzadi Irum, Faisal Shabbir
The incorporation of recycled aggregates in geopolymer concrete (GPC) exhibits higher environmental sustainability due to its ability to utilize industrial by-products and construction and demolition (C&D) waste. This study investigates the combined effect of fine and coarse recycled aggregates on the behavior of GPC. In this research, fly ash (FA) and ground granulated blast furnace slag (GGBFS) were
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Unraveling polycarboxylate superplasticizer (PCE) compatibility in muscovite-blended cement paste through aggregation mechanisms J. Build. Eng. (IF 6.7) Pub Date : 2024-07-08 Huihai Chi, Chong Wang, Yi Tian, Zonglin Xie, Qiang Yuan, Zheng Chen, Xiaohong Zhu
Muscovite is a common harmful mineral in manufactured sand, and has always led to the poor compatibility of superplasticizers in fresh concrete. Currently, the failure mechanism is usually explained by competitive adsorption and interlayer adsorption. In addition to the adsorption point of view, as a kind of surfactant, the self-aggregation conformation of superplasticizers in solutions also requires
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Thermodynamic performance assessment of a solar-driven desiccant evaporative air cooling system (SDEAC) for outdoor environments- a dynamic study J. Build. Eng. (IF 6.7) Pub Date : 2024-07-07 Liang Chun, Zicheng Liao, Yao Xiao, Guoqiang Wang
In this work, a novel dynamic model of a solar-driven desiccant evaporative air cooling system for outdoor environments is proposed, namely the SDEAC system. The effects of operating and designing parameters on the performance of the SDEAC system are analyzed. The results indicate that the sensible cooling capacity, the latent cooling capacity, and the COP decrease monotonically as the rotational speed
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Data-driven automation of HVAC systems: An experimental study in a university study room J. Build. Eng. (IF 6.7) Pub Date : 2024-07-07 Serena Summa, Luca Tarabelli, Costanzo Di Perna, Francesca Stazi
This study proposes a framework for controlling HVAC systems for university study rooms that includes a data-driven model capable of identifying the probability of user interaction with air conditioning and ventilation systems, depending on the thermal sensation vote (TSV), perceived air quality (PAQ) and microclimate parameters (air and operative temperature, air velocity, relative humidity and CO)
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Study on properties of re-dispersible latex powder and polypropylene fiber-reinforced lightweight foam concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-07-07 Xinxin Shi, Baokuan Ning, Fangxi Na, Weifeng Zhao, Chunzheng Zhang
Foam concrete has a broad application prospect due to its lightweight, convenient construction and other characteristics. However, the low strength and tensile toughness limit the application range of foam concrete. In this study, re-dispersible latex powder and polypropylene fiber were used to improve the mechanical properties of foam concrete. The effects of re-dispersible latex powder and polypropylene
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MnO2 with/without Ni doped films on carbon fibers by for enhancing compression and thermoelectric performances of cement J. Build. Eng. (IF 6.7) Pub Date : 2024-07-07 Yu-fan Song, Xin-bo Xiong, Jun Ma, Jianfeng Huang
A microwave anodic deposition process was developed to prepare MnO/Ni-doped MnO films on carbon fibersfor the fillers of cement composites (CFRC) to enhance both thermoelectric and compression performances simultaneously. The resulting CFRCs were designated as M-MnO/CFRC and M-Ni-MnO/CFRC, respectively. The results showed that the M-Ni-MnO/CFRC exhibited the best thermoelectric performance at 313K
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Experimental study on freeze-thaw resistance of mortar: An attempt to modify hydrophobic materials with hydrophobic nano-silica J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Yuyang Pang, Hailiang Wang, Lin Yang, Qun Tang, Haofei Li, Jinliang Zhang
In this study, a novel superhydrophobic additive (MPSANS) was developed to enhance the freeze-thaw (F-T) resistance of mortar by modifying mica powder with stearic acid and hydrophobic nano-silica. Firstly, the effects of hydrophobic nano-silica content on the hydrophobic properties of MPSANS modified mortar were studied, and MPSA10NS5 exhibited the best hydrophobic property, the water absorption and
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Sulfate resistance of UHPC during dry-wet cycling and energy dissipation under compression J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Shun Yang, Yuan Qin, Jialiang Kou, Minghan Duan, Xianwei Zhang, Heng Zhou, Xiangnan Cheng
To study the sulfate resistance of ultra-high performance concrete (UHPC) in saline soil area of western China, four kinds of sulfate solution concentrations (0 %, 5 %, 10 %, 15 %) and 18 dry-wet cycle tests for 540 days were carried out on UHPC specimens. The effects of sulfate dry-wet cycles on the evolution of UHPC strength and energy were studied, the characteristic stress points during uniaxial
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Improved mechanical properties and fiber dispersion of limestone calcined clay cement (LC³) mortars by adjusting the mixing methods J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Yimiao Huang, Jianhao Zhang, Wenyu Zhang, Hui Li, Zhu Pan, Guowei Ma
An emerging cement, limestone calcined clay cement (LC³), reduces CO emissions by using less clinker in manufacture, promoting sustainability. Compared with OPC, LC³ binders (with the same water-to-binder ratio) show reduced flowability, leading to poor fibre dispersion in the matrix. This paper attempts to improve the flowability by adding different amounts of superplasticizer and using an innovative
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Experimental study on mechanical and microstructure properties of cemented tailings-waste rock backfill with continuous gradation J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Bingwen Wang, Mingchao Kang, Chenyi Liu, Lei Yang, Qianlong Li, Senlin Zhou
To reduce the risk of engineering disasters and improve the comprehensive utilization rate of solid waste from mines, cementitious tailings-wasted rock filling as a green and safe technology has been widely used in mines. Mechanical properties and microstructural characterization of cementitious tailings-wasted rock backfill (CTWRB) prepared with gradation coefficients () of 0.3–0.7 and waste rock
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Effect of multiscale fibers and cenospheres on the uniaxial tensile behavior of ultra-high performance concrete subjected to high temperatures J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Yibo Chen, Yao Zhang, Weigang Zhao, Zhiguo Yan
Exposure to high temperatures causes a significant deterioration in the mechanical properties of ultra-high-performance concrete. Considering the characteristics of multiscale defects, it is expected to improve the residual tensile performance of ultra-high-performance concrete by incorporating multiscale fibers (including polyethylene fibers, steel fibers, calcium sulfate whiskers, carbon fibers,
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Automated identification and long-term tracking of modal parameters for a super high-rise building J. Build. Eng. (IF 6.7) Pub Date : 2024-07-06 Shenghui Fu, Jie Wu, Qilin Zhang, Bo Xie
Structural modal parameter identification plays an important role in wind resistance design, damage identification, and health monitoring. At present, the modal identification process still suffers from low automation and low computational efficiency, which are not conducive to the continuous processing of monitoring data. To address this, an automated modal parameter identification approach is proposed
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Experimental investigations on prefabricated interlocking prestressed tendon composite joint and its application to beam-column connection J. Build. Eng. (IF 6.7) Pub Date : 2024-07-05 Yingnan Ding, Weibing Xu, Jin Wang, Yanjiang Chen, Xiuli Du, Botan Shen, Zhuo Zhao
This study proposes an interlocking prestressed tendon composite joint (I-PTCJ) that can be applied to a beam–column connection of the multi-story structure. First, the main structure and prefabrication process of the I-PTCJ were introduced. Next, three beam–column specimens using local and integral I-PTCJs (named specimens PT1 and PT2) and a traditional interlocking joint (I-J, specimen named TG1)
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Preparing autoclaved aerated concrete using molybdenum tailings J. Build. Eng. (IF 6.7) Pub Date : 2024-07-05 Wenli Quan, Wei Huang, Wenzhen Mao, Xiuyuan Yu, Xinglei Zhou, Xinwei Miao, Lina Hou
Due to the background of the difficulty in molybdenum tailings disposal and the shortage of siliceous sand for autoclaved aerated concrete (AAC), molybdenum tailings were used for AAC production in this study. The main process parameters including the quicklime-cement ratio (Q/C), the molar calcium-silicon ratio (C/S), the water-solid materials ratio (W/S), the aluminum powder dosage, the autoclaved
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Synergistic effect of iron tailings, steel slag and red mud cementitious materials on mechanical and microstructure properties J. Build. Eng. (IF 6.7) Pub Date : 2024-07-05 Jiaqi Xu, Pan Chen
Utilizing industrial solid waste for cementitious materials addresses ecological environmental pollution, and contributes significantly to reducing carbon emission, thus fostering sustainable development. The cementitious materials were prepared using three types of solid waste: red mud (RM), iron tailings (IR) and steel slag (SS) in this study. The impact of the synergistic interaction between RM-IR-SS
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Informative design exploration of tower building geometry typology and solar potential using SOM-MLPNN with generalized form-description-based parametric modelling J. Build. Eng. (IF 6.7) Pub Date : 2024-07-05 Minghao Xu, Wang Pan
To synchronize designers early in the design process and help them understand the building forms and performance metrics needed to meet both qualitative and quantitative requirements is crucial for sustainable building designs. While the prevalent design exploration technique, which integrates self-organizing mapping with a Supervised Learning-based Agent Model (SOM-MLPNN), offers insights into design
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Dynamic responses of rubberised concrete: A study using short-length F-shape barriers subjected to pendulum impact J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Xin Lyu, Hongyu Ran, Mohamed Elchalakani, Adam Wittek, Ghulam Mubashar Hassan, Pouria Ayough, Thong M. Pham
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Design strategies of cementitious metamaterials (CMs) with tunable bandgaps: Density customization and geometric optimization J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Peng Dong, Jiayi Hu, Zhi Gong, Yuanlong Li, Jinlong Liu, Jinrui Cao, Chen Lin, Weijian Ding
The propagation of low-frequency elastic waves may exert significant stress on both human health and environmental safety. This study presents a new kind of cementitious metamaterials (CMs) characterized by tunable bandgaps for efficient absorption of low-frequency elastic waves. A dynamic system model is employed to examine and analyze the eigenfrequencies of these CMs. Herein, the porous alkali-activated
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A comprehensive model to predict the fire performance of intumescent fire-retardant coating on steel substrate J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Liang Yi, Saiya Feng, Zhengyang Wang, Yan Ding, Tianyang Chu, Yanzhen Zhuang
Intumescent fire-retardant coatings (IFRC) are widely used in the fire protection of timber and steel buildings. An accurate evaluation of its fire performance is the key to predicting the fire behaviors of buildings. Although many endeavors have been made, a facile and accurate IFRC model with sufficient reaction details is highly desired. ThermaKin can simulate the thermal decomposition of polymers
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Workforce forecasting in the building maintenance and repair work: Evaluating machine learning and LSTM models J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Nan Cao, Michael C.P. Sing
Effective workforce forecasting is critical to strategic management in construction projects, particularly ensuring staffing is optimized for efficient and timely project completion. This aspect holds particular importance in densely populated urban environments, where the complexity and scale of high-rise building construction exacerbate the need for proactive maintenance strategies. This research
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Study on the performance of coal gangue ceramsite steel fiber high strength concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Renliang Shan, Tianyu Han, Weiping Zhao, Haotian Wu, Yao Bai, Zhenyu Xu, Dongjie Qiao, Guoye Jing
Our study aims to use coal gangue ceramsite (CGC) as coarse aggregate and add an appropriate volume fraction of steel fiber to prepare high strength concrete with lighter weight and meeting pumping requirements. The effects of (w/b) ratio, CGC content, the volume fraction of steel fiber, and water reducing agent content on the properties of coal gangue ceramsite steel fiber concrete (CGCSFC) were analyzed
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Study on the mechanical properties of recycled brick coarse aggregate concrete based on finite element modeling J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Yu Zeng, Hui Guo, Jinsong Lei, Yanbo Hu, Zhenchao Yang
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Field investigation of indoor air quality and its association with heating lifestyles among older people in severe cold rural China J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Lin Liu, Jianwen Gao, Zhiwen Luo, Jing Liu, Lei Wang, Ye Yuan
Persistent extreme cold in Northeast China, spanning six months, has led to unique adaptive heating practices among rural residents. Practices such as using solid fuels and maintaining airtight living spaces are linked to compromised indoor air quality (IAQ) and have implications for public health. This study investigated the IAQ and heating lifestyles in six typical rural dwellings in Northeast China
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An investigation using resampling techniques and explainable machine learning to minimize fire losses in residential buildings J. Build. Eng. (IF 6.7) Pub Date : 2024-07-04 Zenghui Liu, Yingnan Zhuang
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Particulate matter and black carbon exposure in Seoul subway: Implications for human health risk J. Build. Eng. (IF 6.7) Pub Date : 2024-07-03 Debananda Roy, Hyunsoo Lim, Seunga Kim, Seungyeon Song, Joonhong Park
Air pollution and the associated health risks to humans caused by exposure to particle matter in enclosed subway systems are currently concerns. This research first time investigated the substantial health hazards (cancerous, non-cancerous, relative risk, and excess mortality rates associated with all-cause, cardiovascular, and respiratory mortality) posed by metals and black carbon (BC) bound to particulate
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Reinforcement learning for HVAC control in intelligent buildings: A technical and conceptual review J. Build. Eng. (IF 6.7) Pub Date : 2024-07-03 Khalil Al Sayed, Abhinandana Boodi, Roozbeh Sadeghian Broujeny, Karim Beddiar
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An automatic building façade deterioration detection system using infrared-visible image fusion and deep learning J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Pujin Wang, Jianzhuang Xiao, Xingxing Qiang, Rongwei Xiao, Yi Liu, Chang Sun, Jianhui Hu, Shijie Liu
Diverse building façade deteriorations occurring both externally and internally within the materials have emerged as substantial challenges to the structural durability and the occupant safety. Nevertheless, prevailing evaluation and detection endeavors for these deteriorations have predominantly hinged on the scrutiny of surface-level visual data, overlooking the integrative potential offered by the
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Perceptions of built environment professionals on intelligent office buildings: The interplay between technology, design for sustainability and responsiveness J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Handan Gündoğan, İrem Dikmen, Güzide Atasoy
The confluence of technological advances, climate mitigation efforts, and evolving user expectations has significantly transformed how the built environment is conceptualized, designed, and delivered; Intelligent Buildings (IBs) are not an exception. The systematic literature review revealed that there have been limited studies exploring the perspectives of Building Environment (BE) professionals on
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Experimental-FEA investigation of the structural performance of steel box connector in precast concrete connection J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Khoa Vo Anh Pham, Yong-Nam Kim, Sungwoo Woo, Sung Jig Kim, Gayoon Lee, Kihak Lee
In this study, the steel box connector is proposed as a solution to improve the response of a precast structure under static and dynamic loads, especially the intermediate moment frame of a beam–column structure. The performance of the steel box connector with steel reinforcement and beam structure was investigated by experiment and finite element analysis. A steel box connector (SBC) designed with
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Seismic residual displacement for structural system with partial self-centering ability J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Shaowei Wu, Jianzhong Li, Xu Chen, Zhongguo Guan
Structural systems with hybrid connections are generally equipped with both unbonded post-tensioning (PT) tendons and energy dissipation (ED) devices, while the relative contributions between initial PT force and ED device determine the self-centering ability of the system. Extensive investigations have been conducted on the system with relatively large initial PT force possessing full self-centering
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A prediction method for railway-induced vibrations in building structures using modal properties in limited modes J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Jinzhe Xie, Wanming Zhai, Yumeng Hua
This paper proposes a prediction method to estimate vibrations in building structures induced by to-be-constructed railways. The method derives modal equations of motion for building modeling by using the natural frequencies in limited modes, the corresponding damping ratios and mode shapes at selected locations. The participation vector for input ground motions is approximated by the corresponding
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Study on seismic performance of RC frame with UHPC cladding panels and two-level friction damping connections J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Huiling Sha, Xun Chong, Linlin Xie, Li He, Qing Jiang, Jun Gao
In this study, a novel two-level friction damping connection (TLFDC) is proposed for connecting the ultra-high performance concrete (UHPC) cladding panels to the main structure. The TLFDC is composed of two parallel friction dampers. During earthquakes, the first- and second-level dampers will be successively activated under the service-level and design-based earthquakes, respectively, which is beneficial
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Seismic behavior of a self-centering beam-to-column joint using low-yield arc steel plates for dissipating energy J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Yangchao Ru, Liusheng He
To improve the seismic performance of the beam-to-column joints in steel moment-resisting frame structures, a new type of self-centering beam-to-column joint assembled with low-yield arc steel plate dampers for dissipating seismic energy is proposed and studied in the current study. One distinctive feature of the joint is the utilization of low-yield steel, which has significant strain hardening and
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Syneristic effects of polypropylene fiber and expansive agent on early age volume stability of concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-07-02 Bei Li, Lifeng Zhang, Yuwei Shen, Guoyi Zhang, Cong Wang, Zhiyong Li, Chenxi Gao
Calcium sulfoaluminate-based expansive agents demonstrate their effectiveness in compensating for shrinkage when proper curing conditions are provided. However, some construction projects may encounter issues with inadequate early curing, preventing the full potential of the expansive agents and making it challenging to prevent early shrinkage. Hence, this study focuses on investigating the combined
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Acid resistance of alkali-activated binders based on clays from phosphate mining by-products J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 S. Mabroum, I. Garcia-Lodeiro, A. El Machi, S. Chhaiba, Y. Taha, M. Benzaazoua, M.T. Blanco-Varela, R. Hakkou
This paper outlines the results of studying the resistance of alkali-activated materials (AAM), based on calcined yellow clay from phosphate mine by-products as a precursor, to an acid attack (with sulfuric and phosphoric acids, 5 %, pH ≈ 0,8–2). Calcined yellow clay (YC850) is used as the source of aluminosilicates, containing montmorillonite, dolomite, and quartz. The alkali-activation of such materials
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Shrinkage separation prediction of concrete-filled steel tube arch bridge: A coupling model concerning multiple factors J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Wen Xu, Rui Yang, Haitao Zhao, Hua Li, Wenqiang Zuo, Jiaping Liu
The shrinkage separation is one of the key factors restricting the development of concrete-filled steel tube (CFST) arch bridge. In this paper, its mechanism and evaluation method concerning multiple factors, including structure, environment, material and construction were investigated. Firstly, the hydration process of in-tube concrete was simulated using the hydration degree as a basic state parameter
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Intelligent design and optimization system for shear wall structures based on large language models and generative artificial intelligence J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Sizhong Qin, Hong Guan, Wenjie Liao, Yi Gu, Zhe Zheng, Hongjing Xue, Xinzheng Lu
Intelligent design technology for shear wall structures has great potential for enhancing design efficiency and addressing the challenges of tedious and repetitive design tasks. Recently, there has been a surge in the development of this technology. However, existing deep learning-based design methods for shear wall structures suffer from poor quality and usability issues. To address these challenges
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Resistance to magnesium sulphate attack of binary and ternary cementless self-compacting alkali-activated mortar J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Merve Şahin Yön, Mehmet Karataş
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Dynamic behavior monitoring of twin supertall buildings during Super Typhoon Soksuri using social sensing data J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Kang Zhou, Ming-Gang Duan, Zong-Long Wu, Lun-Hai Zhi, Feng Hu
This paper presents the dynamic behavior monitoring of the 300-m-tall Xiamen twin towers during Super Typhoon Soksuri by means of social sensing, which involves two individuals equipped with six smart devices to conduct acceleration measurement and video footage filming. The measured acceleration data are first corrected by the resampling technique since the sampling rate of smart-device-based measurement
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Acceleration of chelator on mineralization reaction of cement paste at different CO2 pressures J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Ronghua Zhuang, Ying Li, Quantao Liu, Zizhou Shen, Tianwei Zhang, Yanheng He, Shangheng Zeng, Hao Duan, Jianying Yu, Ruiyang Wang
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A new damage identification approach of HFSGCW based on LDV and wavelet packet band energy method J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Haoyang Zheng, Di He, Tong Guo, Zhenyu Chen
This study introduces a damage assessment system and a pivotal detection technique for hidden frame-supported glass curtain wall (HFSGCW) structural sealant. The vibration performance of HFSGCW is evaluated using a laser Doppler vibrometer (LDV). The acquired signals undergo wavelet packet transformation for decomposition. The damage conditions of the structural sealant are analyzed by calculating
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Statistical model and fracture behavior of manufactured sand concrete with varying replacement rates and stone powder contents J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Hua Yang, Yubo Jiao, Jian Xing, Zixian Liu
Manufactured sand (MS) is considered a reliable alternative to natural sand (NS) in concrete due to its wide availability and cost-effectiveness. In this study, the influences of water-cement ratio (0.41, 0.44, 0.47), replacement rate of MS (20 %, 60 %, 100 %) and stone powder content (0 %, 5 %, 10 %) on the mechanical and fracture characteristics of manufactured sand concrete (MSC) were investigated
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Piping network optimization for district heating system using an enhanced Genetic Algorithm searching method J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Lok Shun Chan
Given the substantial construction and operational expenses associated with a district heating system (DHS), achieving an optimal layout for the piping network is paramount for its successful deployment. In this study, the optimization of DHS piping configuration has been explored. Traditional exhaustive search methods for network design are often impractical due to computational constraints, making
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Effect of partition walls on the vibration serviceability of cross-laminated timber floors J. Build. Eng. (IF 6.7) Pub Date : 2024-07-01 Ebenezer Ussher, Angelo Aloisio, Dag Pasquale Pasca, Simen Lysebo Hansen, Roberto Tomasi
The current standards need more specific serviceability criteria for Cross-Laminated Timber (CLT) floors. This paper presents a comprehensive analysis of a relevant case study in Norway, which presented unexpectedly high accelerations in the CLT floors after construction. The lack of a sufficiently detailed design process resulted in the poor vibration performance of the floors, which partially compromised
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Reducing residential cooling demand in a sprawling desert city through vertical urban densification J. Build. Eng. (IF 6.7) Pub Date : 2024-06-29 Carlos Lopez-Ordoñez, Isabel Crespo-Cabillo, Jaime Roset Calzada, Elena Garcia-Nevado, Helena Coch
Traditional desert cities used a compact urban form since it provides benefits in terms of thermal comfort both in urban and interior spaces. However, many current desert cities have shifted to a sprawling model with isolated low-rise buildings, leading to longer travel distances, increased land use, inadequate public space, and higher demand for building cooling. Our study aims to investigate how
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Experimental study on full-scale glass roof panels with embedded laminated connections under the short-term and long-term loading J. Build. Eng. (IF 6.7) Pub Date : 2024-06-29 Michaela Zdražilová, Zdeněk Sokol, Martina Eliášová
This experimental study covers a problematic of full-scale roof panels with four embedded laminated point connections under two types of loads - short-term loads on intact panels, and long-term uniform loads after the fracture of a thermally treated glass pane. Two types of panels consisting either of fully tempered, or heat strengthened glass plies in combination with float glass, were tested, and
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Research on the effect of apparent density on the rheological properties of lightweight and heavyweight concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-06-29 Yue Li, Jinlei Mu, Fazhou Wang, Xiaozhong Wang, Qingjun Ding
This paper investigated the influence from apparent density on rheological property of lightweight and heavyweight concrete. The apparent densities of 1761 kg/m³, 3048 kg/m³ and 3548 kg/m³ were selected. The obtained results showed when the slump for lightweight and heavyweight concrete was controlled in the range of 160 ± 10 mm, the yield stress () and plastic viscosity () increased significantly