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Studies on foamed concrete micropores and their effects on stress distribution and heat conduction J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Yajing Bie, Siteng Ba, Shoukai Chen
Further research on the pore structure of foamed concrete contribute to expand the application of energy-efficient buildings. In this paper, the micropore structure features of foamed concrete were characterized by nuclear magnetic resonance. It is found that the pore size of foamed concrete ranged from 1 nm to 74.84 μm. In order to understand the effect of micropores on the performance of foamed concrete
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Impact factors and peaking simulation of carbon emissions in the building sector in Shandong Province J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Shouxin Zhang, Meiping Wang, Haiyong Zhu, Huanzhi Jiang, Jiazhen Liu
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Life cycle cost analysis and life cycle assessment of ETFE cushion integrated transparent organic/perovskite solar cells: Comparison with PV glazing skylight J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Qingxiang Li, Tingjun Li, Alara Kutlu, Alessandra Zanelli
ETFE cushion integrated transparent solar cell (EC-TSC) systems have gained more attention in recent years due to their lightweight structure, reduced material consumption, and renewable energy production. In this study, innovative EC-TSC systems are applied as the skylight for the atrium of a commercial building to replace the current PV glazing skylight. The environmental and economic sustainability
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Relationship between indoor and outdoor temperatures in winter in the Hot Summer and Cold Winter Zone of China - Considering two sources of outdoor temperatures and different indoor heating methods J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Yuchen Hou, Yingxin Zhu, Xiuqing Cui, Jing Wang, Xinyu Jia, Bin Cao
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Simultaneous analysis and design optimization for seismic retrofitting of hysteretic structures with fluid viscous dampers J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Nicolò Pollini
Fluid viscous dampers, if properly sized and placed, can significantly improve the performance and safety of existing structures during an earthquake. This has motivated the development of several approaches to optimize the design of fluid viscous dampers. The optimization approaches available typically have an iterative nature, and in every iteration, expensive time-history analyses are performed
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Biofabrication in architecture: 3D bioprinting of nature-sourced multi-material powder hydrogels, material testing, and prototyping J. Build. Eng. (IF 6.4) Pub Date : 2024-03-26 Hyoung-In Choi, Hwang Yi
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Enhancing performance evaluation of low-cost inclinometers for the long-term monitoring of buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-03-25 F. Lozano, S. Emadi, S. Komarizadehasl, J. González-Arteaga, Y. Xia
The development of low-cost structural and environmental sensors has revolutionized monitoring practices across numerous fields, enabling cost-effective solutions for infrastructure and building health assessment. However, a critical challenge associated with these sensors is their long-term durability and reliability. Surprisingly, despite the significant interest in these low-cost devices, the literature
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Effectiveness of enhanced roof ventilation unit (ERU) based on venturi cap in different wind environments and new evaluation models: A numerical study J. Build. Eng. (IF 6.4) Pub Date : 2024-03-25 Lei Tian, Wanxiang Yao, Zu-An Liu, Qiong Shen, Lili Zhang, Fan Fei, Yueqiu Xia, Hiroatsu Fukuda
Reasonable building ventilation design can effectively improve indoor thermal comfort and reduce energy consumption. Therefore, an enhanced roof ventilation unit (ERU) was developed for this study, and its performance and influence law under various wind speeds and directions were explored through numerical simulation. Additionally, a new evaluation method for ERU was proposed through data fitting
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Shaking table test of a dry-connection fully precast frame structure system J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Ruijun Zhang, Tong Guo, Yifeng Wu, Aiqun Li, Ruizhao Zhu, T.Y. Yang
In view of the construction difficulties and ecological environment sensitivity of building construction in extremely cold and high seismic intensity areas, a new type of dry-connection fully precast frame structure system was proposed. The connections of the structure are easy to assemble, which can greatly improve the construction efficiency and provide convenience for the upgrading and replacement
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Revaluation of occupancy duration for live load using big data of enterprise credit information J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Yang Li, Jun Chen, Jie Li
The occupancy duration is an essential variable in establishing the time-varying model of the live load. The manual questioning and inquiries, which are the common survey methods for occupancy duration, suffer from being expensive and time-consuming. This has hindered the updating of the data basis and progress in live load research. This study proposes a novel big data survey method, which utilizes
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Evaluation of rheological properties of sustainable self-compacting recycled aggregate concrete produced by two-stage mixing approach J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Romio Mandal, Sarat Kumar Panda, Sanket Nayak
The rheological properties such as static yield stress (), dynamic yield stress (), and plastic viscosity () play an important role in controlling the fresh state activities of self-compacting concrete (SCC). In the present investigation, these rheological parameters of self-compacting recycled aggregate concrete (SCRAC) prepared by two-stage mixing approach (TSMA) are determined as a function of recycled
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Bond behavior of the FRP grid-concrete interface with geopolymer mortar as an adhesive J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Mengke Lei, Xin Wang, Jinghui Chen, Huang Huang, Jinghui Lin, Zongxue Yan, Zhishen Wu
This study conducts an investigation into the effect of the geopolymer mortar (GPM) thickness on the bond behavior of the FRP grid-concrete interface. Eighteen specimens were tested under the single-lap shear loading to evaluate the effect of the mortar thickness (8/10/15/20/25 mm) and macro fiber reinforcement from failure mode, load response, strain distribution, and bond stress distribution. The
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Investigation of solar accommodation via storage configuration in district heating system based on granularity analysis J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Yuting Zhou, Nan Zhang, Xiaojie Lin, Shaoxiong Liu, Wei Zhong, Chunyang Jiang, Xuxiu Wang, Bin Ni
In the pursuit of achieving carbon neutrality, it is essential to advance the broad accommodation of renewable energy for the realization of a low-carbon district heating system (DHS). The heat storage configuration serves as an effective assurance for facilitating the accommodation of renewable energy in DHS. This paper analyzes the impact of heat storage configuration on the accommodation of solar
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Effects of textile type on the flexural properties of prefabricated hollow-core slabs strengthened with PVA fibers-improved TRM J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Shifei Song, Mingke Deng, Yangxi Zhang
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3D-printable construction and demolition waste-based geopolymer: Investigating the effects of additives on engineering properties J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Hüseyin İlcan, Adnan Yılmaz Külak, Mustafa Şahmaran
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Effect of moisture content on properties, microstructure and carbon sequestration of CO2-cured cement mortar mixed with chelator J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Ronghua Zhuang, Ying Li, Quantao Liu, Yanheng He, Tianwei Zhang, Shangheng Zeng, Hao Duan, Jianying Yu
Chelator has the effect of improving the mineralization curing degree of cement-based materials. However, the moisture content in the pores of concrete will affect the permeability and dissolution of CO as well as the complexation and migration of Ca by chelator, thus influencing the performance of CO-cured concrete containing chelator. To obtain optimal moisture content for CO-cured cement mortar
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Corrosion resistance of cement-based materials with sugarcane bagasse ash-metakaolin-Portland cement binder under carbonic acid water environment J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Junmin Zhu, Mingtao Li, Jianhui Liu, Leping Liu, Zheng Chen, Shuqing Zhang, Fakang Yang, Caijun Shi
This paper investigated the corrosion process of sugarcane bagasse ash (SCBA)-metakaolin (MK)-Portland cement (PC) system under carbonic acid water environment. The phases of cement paste before and after corrosion and microstructure were analyzed by X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy and scanning electron microscope. The results showed that the addition
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Enhancing performance of concrete with glass fiber-reinforced polymer short rebars as coarse aggregates by confinement J. Build. Eng. (IF 6.4) Pub Date : 2024-03-24 Zheng-Duan Li, Shi-Qi Huang, Yu-Xuan Feng, Cai-Shu Cheng, Bing Fu
Cutting glass fiber-reinforced polymer (GFRP) waste into aggregate-size reinforcing bars (short rebars) as coarse aggregates in concrete shows to be an effective approach for recycling waste GFRP composites. The resulting concrete with such short rebars however exhibits a reduction in the compressive strength comparing to the corresponding normal concrete, making it unable to be directly used for structural
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Experimental investigation of flexural bond behavior of sand-coated GFRP rebar embedded in concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-23 Gökhan B. Sakcalı, İsa Yüksel, Serkan Sağıroğlu
Steel rebars used in Reinforced Concrete (RC) elements may be subjected to corrosion due to aggressive environmental conditions. Rebar corrosion reduces the durability and the structural capacity of RC elements. On the other hand, since the steel rebars affect the magnetic fields, it is not preferred to be used in RC structures which is used to carry the equipment that propagate magnetic waves such
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Advancing carbon nanomaterials-engineered self-sensing cement composites for structural health monitoring: A state-of-the-art review J. Build. Eng. (IF 6.4) Pub Date : 2024-03-22 Xi Jiang, Dong Lu, Binbin Yin, Zhen Leng
Cement concrete is a ubiquitous material used extensively in infrastructure worldwide. However, cement concrete would degrade during its long-term service life. The limited real-time detection tools and condition assessment techniques lead to safety risks, and thus shorten the service life of concrete infrastructures and affect their resilience. To address this issue, the development of carbon-based
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Crack pattern identification in cementitious materials based on acoustic emission and machine learning J. Build. Eng. (IF 6.4) Pub Date : 2024-03-22 Xiao Wang, Qingrui Yue, Xiaogang Liu
The cracking patterns in cementitious materials before failure are closely related to acoustic emission (AE) monitoring signals. Traditional rise angle-average frequency analysis methods rely on empirical judgment for boundary line determination, lacking effective automated recognition methods to distinguish between tensile, shear, and mixed crack types. This paper presents an unsupervised crack-type
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Design–operation gap caused by parameter variance in HVAC system control sequences: A simulation-based study on energy efficiency and temperature controllability J. Build. Eng. (IF 6.4) Pub Date : 2024-03-22 Akari Nomura, Shanrui Shi, Shohei Miyata, Yasunori Akashi, Masashi Momota, Takao Sawachi
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A study of some relevant properties of concrete incorporating waste ceramic powder as a cement replacement agent J. Build. Eng. (IF 6.4) Pub Date : 2024-03-22 Le Li, Paul Joseph, Xuelin Zhang, Lihai Zhang
Cement, the key ingredient in concrete, is responsible for 8% of the world's CO2 emissions. Thus, reducing the amount of cement used in concrete is highly desirable to lower the total embodied carbon in concrete manufacturing. Furthermore, an increasing amount of ceramic waste powder (CWP) is generated during the ceramics manufacturing process, which can result in severe environmental problems such
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Capillary water absorption and free shrinkage characterization for seawater sea-sand concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Du Pan, Keyou Chen, Ditao Niu, Christopher Kin Ying Leung, Zongjin Li
The durability of seawater sea-sand concrete (SSC) and/or sea-sand concrete (SC) structures exposed to harsh marine environments is crucial to their service life. In this study, we investigated the capillary water absorption of SSC, SC, and ordinary concrete (OC) with different water–binder ratios (i.e., 0.38 and 0.28) in deionized water and composite saline solutions. The results showed that the cumulative
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Characteristics of the non-uniform corrosion of the steel bars extracted from the marine transportation infrastructures J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Wenjun Zhu, Yi Ren, Zhongxu Yu, Fan Tang, Yude Xu, Yuye Xu
This paper investigates the spatial morphological characteristics of non-uniform corrosion of reinforced concrete in coastal areas. A series of naturally corroded reinforced concrete specimens were retrieved from marine transportation infrastructure. Non-destructive tests were conducted by X-ray computed tomography (CT). The morphological propagations of the corrosion pits were explored, and the spatial
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A novel resilient system of self-centering precast reinforced concrete walls with external dampers J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Nouraldaim F.A. Yagoub, Xiuxin Wang, Aamir Dean, Amr M.A. Moussa, Elsadig Mahdi
The seismic vulnerability of concrete structures has prompted the development of innovative approaches to enhance earthquake resistance. Recent earthquakes have demonstrated the challenges of repairing concrete buildings damaged beyond feasible restoration. In response, research in structural engineering has increasingly focused on damage-resisting reinforced concrete walls, offering improved self-centering
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Study of durability and mechanical properties for utilization of cupola slag as a coarse aggregate in M20 grade green concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Rakesh Sikder, Soumyabrata Chakravarty, Debasis Sau, Partha Haldar, Saroj Mandal, Titas Nandi, Goutam Sutradhar
Cupola slag is an industrial waste generated from cupola furnaces during cast iron production. The disposal of cupola slag is a matter of burden for the manufacturers of casting industry. This experimental study aims to reuse cupola furnace slag (CFS) in the construction industry, developing a novel way of solid waste management. In the M20 grade concrete, CFS is used as coarse aggregate (CA), partially
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Development of a time pressure-based model for the simulation of an evacuation in a fire emergency J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Yueyao Ma, Zhichao Zhang, Wenke Zhang, Eric Waiming Lee, Meng Shi
The study of pedestrian behaviour in a fire emergency is essential for effectively reducing the number of casualties. However, most studies only consider the effect of fire on pedestrian behaviour and ignore the effect of a fire emergency on pedestrian psychology. In this study, we introduce a method of assessing the pedestrian time pressure within a cellular automaton model using the available safe
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The influence of ventilation on airborne transmission between stacking toilets J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Tsz-Wun Tsang, Kwok-Wai Mui, Ling-Tim Wong, Yiu-Sum Wong
Multiple COVID-19 outbreaks in high-rise residential buildings have been linked to the vertical spread of the virus along the building. This study aimed to provide empirical evidence and experimental results to evaluate the effects of toilet ventilation on the spread of bathroom aerosols in high-rise residential buildings. This study explored potential transmission pathways by conducting tracer gas
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AHU sensor fault diagnosis in various operating conditions based on a hybrid data-driven model combined energy consumption J. Build. Eng. (IF 6.4) Pub Date : 2024-03-21 Boyan Zhang, Peng Wang, Guangyu Liu, Zhongjiao Ma, Tianyi Zhao
Data-driven methods has the inspiring potential for sensors fault detection in heating, ventilation, and air-conditioning (HVAC) intelligence control system. However, the interpretability of pure data-driven methods is relatively poor. Moreover, pure data-driven methods heavily rely on quality of HVAC sensor data that causes pure data driven methods have inconsistent detection efficiency in various
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Application of lime mud as a sustainable alternative construction material: A comprehensive review of approaches J. Build. Eng. (IF 6.4) Pub Date : 2024-03-20 Prabhat Vashistha, Yanchen Oinam, Jinyan Shi, Sukhoon Pyo
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Sulfate resistance of carbonated basic oxygen furnace slag-metakaolin-Portland cement blends J. Build. Eng. (IF 6.4) Pub Date : 2024-03-20 Xiaofeng Zhou, Qiang Yuan, Lou Chen, Keren Zheng, Shihua Wei, Yusra Iftikhar
Basic oxygen furnace slag (SS) is prone to carbonation due to its alkaline properties. The combined use of carbonated basic oxygen furnace slag (CSS) with metakaolin (MK) as a composite supplementary cementitious material (CSS-MK) can improve the reactivity of CSS and significantly lower the overall embodied CO emission. However, the impact of CSS-MK on the resistance of external sulfate attack (ESA)
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Design of a thermoelectric generator-assisted photovoltaic panel hybrid harvester using microencapsulate phase change material J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Yong-Kwon Kang, Jaewon Joung, Seheon Kim, Junseok Park, Jae-Weon Jeong
Building-integrated photovoltaic (BIPV) systems represent a highly promising renewable energy technology to realize zero-energy cities. However, BIPV systems have disadvantages such as the absence of an optimal angle and reduced efficiency due to temperature rise. Various methods and studies have been proposed to address these issues, including heat utilization and enhancement of solar or heat radiation
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Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Meixia Qiao, You-Xin Ma, Tat Ching Fung, Kang Hai Tan
Concrete-encased concrete-filled steel tube (CECFST) structural system has gained popularity in recent years due to its several advantages over conventional structures. Additionally, precast technology has become an effective way of improving construction efficiency and environmental performance. Therefore, it is essential to investigate the structural behaviour of precast concrete (PC) beam-to-CECFST
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Optimal arrangement of AE sensors for prestressed hollow slabs based on AE propagation characteristics J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Xiao-Qing Zhu, Kang Li, Guang-Ming Wu, Zhen-Bang Jiang, Sheng-Li Li, Chao Wang, Tai-Gang Wang
Acoustic emission (AE) health monitoring is crucial for effective data collection, rational monitoring of results, and economical engineering applications in prestressed hollow slabs. To achieve an optimal sensor arrangement, experiments were performed to measure AE attenuation with different propagation paths in both the longitudinal and transverse directions of a full-scale prestressed hollow slab
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Microwave-absorbing building materials: Assessing thickness and antenna separation in fly ash-ladle furnace slag one-part geopolymer J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Hang Yong-Jie, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Lee Yeng-Seng, Lee Wei-Hao, Phakkhananan Pakawanit, Kong Ern-Hun, Ong Shee-Ween
This paper aims to examine the effect of thickness (20, 40, 60, 80, and 100 mm) and antenna separation (20, 40, 60, 80, and 100 mm) on microwave absorption ability of fly ash-ladle furnace slag one-part geopolymer. The one-part geopolymers exhibited a dense structure with a good compressive strength of 39.2 MPa, which satisfies the minimum requirement for structural building (>28.0 MPa). The geopolymers
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The effect of interlayer adhesion on stress distribution in 3D printed beam elements J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Szymon Skibicki, Piotr Szewczyk, Julia Majewska, Daniel Sibera, Ewa Ekiert, Sang-Yeop Chung, Pawel Sikora
Interlayer adhesion is one of the most pivotal aspects related to mechanical performance and durability of 3D printed concrete. However, due to continuous printing of multi-layered structures, large-scale buildings require long time intervals between layer deposition, with interlayer bond strength decreasing as time intervals between printed layers increase. This study evaluates comprehensively the
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Experimental study on stress-strain relationship of high strength coral concrete (HSCC) J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Jiwang Zhang, Lei Wang, Jin Yi, Qinglong Qin
In recent decades, with the advancement of coral reef construction, the inception of design and production of coral concrete has emerged. However, current research primarily focuses on medium and low strength grades, leaving the exploration of high-strength coral concrete (HSCC) in its infancy. Therefore, in this paper, uniaxial compression test and microscopic mean are utilized to investigate the
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Efficacy of polyacrylate latex nanodispersions as consolidation agents in porous sandstones evaluated by synchrotron X-ray computed microtomography J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Irena Adámková, Radek Ševčík, Jana Machotová, Lucie Zárybnická, Petra Mácová, Lucia Mancini, Alberto Viani
This research describes the effects of two innovative aqueous polyacrylate polymers on the microstructure of porous stone materials. Such latex nanodispersions have been designed (with and without fluorination) as consolidation agents and tested on two types of sandstone, namely, Prague (Mšené) and Obernkirchen, largely used as building materials for valuable Cultural Heritage objects. Quantitative
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Experimental investigation of uncertain factors on the mechanical properties of half-grouted sleeve connected with large-diameter high-strength reinforcement J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Tongxing Wang, Yanchen Song, Lihui Wang, Qiang Han
The half-grouted sleeve connection (HGSC) is widely used to connect reinforcement in precast concrete (PC) structures. While some studies have examined the mechanical behavior of the HGSC, there is still a lack of research on uncertain factors with large-diameter high-strength reinforcement. To fill this gap, an extensive experimental study was conducted to investigate the mechanical properties of
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Effect of unpowered ventilation caps and shaft parameters on fire smoke spread in the natural ventilation tunnel with shafts J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Xueqian Zhao, Junwei Chi, Huan Luo, Ru Zhou, Min Hao, Juncheng Jiang
Shaft-type natural ventilation offer a sustainable and cost-effective alternative to mechanical systems for the mitigation of smoke hazards. This study investigated the behavior of smoke with the application of unpowered ventilation caps in 1/15 scale shallow-buried urban road tunnels with shafts, and analyzed parameters such as the shaft axis wheelbase, shaft width, shaft width-to-height ratio, and
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Optimization of solar and heat pump complementary powered desiccant air conditioning system J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Chuang Chen, Huaqiu Yang, Xin Li, Liu Chen, Meng Shi
The effective utilization of renewable heat sources is critical for energy saving in desiccant air conditioning systems. A new solar and heat pump complementary powered desiccant air conditioning system is proposed. The system consists of a solar and water source heat pump complementary reheat subsystem, a two-stage desiccant wheel, a three-stage air cooler, and a two-stage heat pipe exchanger. Simulation
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A high-fidelity digital twin predictive modeling of air-source heat pump using FCPM-SBLS algorithm J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Ruixin Lv, Zhongyuan Yuan, Bo Lei
This paper proposes an innovative Digital Twin (DT) model to predict air-source heat pumps' (ASHP) coefficient of performance (COP) using a combination of fuzzy ( + ) means clustering (FCPM) and the stacked broad learning system (SBLS) algorithm (FCPM-SBLS). The SBLS algorithm is adopted to establish the structure of the DT model, considering the imperative of tracking real-time performance changes
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Integrated sustainability assessment of construction waste-based shading devices for the refurbishment of obsolete educational public building stock J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Torsten Masseck, Oriol París-Viviana, Saeid Habibi, Oriol Pons-Valladares
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Characterization of CDW types by NIR spectroscopy: Towards an automatic selection of recycled aggregates J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Francesco Radica, Gianluca Iezzi, Oriana Trotta, Giuseppe Bonifazi, Silvia Serranti, Jorge de Brito
The petrographic and mechanical heterogeneity of construction and demolition waste (CDW) strongly affects the physic-mechanical performance of new concrete and mortar mixes (RAC: recycled aggregate concrete and RAM: recycled aggregate mortar) made with these recycled aggregates (RA). It is thus extremely important to quickly discriminate and sort them in groups of materials with homogeneous petrography
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Beta functions adaptation on empirical damage for a fragility model of Italian buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Carlo Del Gaudio, Gerardo Mario Verderame
In this study, heuristic vulnerability model is presented providing damage distribution as a function of ground motion severity, through the use of given distribution function.
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The influence of demographic structure on residential buildings' carbon emissions in China J. Build. Eng. (IF 6.4) Pub Date : 2024-03-19 Liu Chen, Kairui You, Gengpei Lv, Weiguang Cai, Jinbo Zhang, Yang Zhang
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Laboratory test and meso-scale discrete element modelling on creep behaviors of concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Gang Ma, Youjun Xie, Guangcheng Long, Zhuo Tang, Xiang Zhou, Haixu Wang, Lixing Wang
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Current knowledge regarding biological recolonization of stone cultural heritage after cleaning treatments J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 B. Prieto, G. Paz-Bermúdez, M.E. López de Silanes, C. Montojo, D. Pérez-Velón
Biocolonization causes physical-chemical and aesthetic biodeterioration, which depreciates the artistic value of outdoor works of art, leading to the use of (often expensive) treatments to remove the colonizing organisms. Such treatments are generally considered successful if they eliminate the biocolonization; however, subsequent recolonization of the cleaned substrate is generally overlooked by both
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Deriving thermal sensitivity across educational stages: Evidence-based definition of Griffiths' coefficient J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Giulia Lamberti, Giulia Torriani, Fabio Fantozzi, Francesco Babich
Thermal sensitivity directly impacts occupants' comfort by influencing neutral temperatures and comfort models. The Griffiths method, commonly used to derive thermal sensitivity, often assumes a constant value of 0.5°C for calculating occupants' neutral temperatures. However, it is important to note that thermal sensitivity can vary depending on factors such as building type, climatic conditions, operation
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Development of a novel extrusion device to improve the printability of 3D printable geopolymer concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Zhaoliang Sheng, Binrong Zhu, Jingming Cai, Xuesen Li, Lingqi Meng, Yamei Zhang, Jinlong Pan
This study explores the printability of 3D geopolymer concrete using a novel extrusion device. Geopolymer, known for its eco-friendliness and rapid curing, offers an eco-friendly alternative to conventional cement in 3D printing. A novel extrusion device, integrating mixing and stirring functions, was developed to blend sodium silicate powder and precursor slurry effectively. Systematic experiments
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Design of chiller system with thermal and battery storage for enhanced integration with on-site PV J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 I. Al-Aali, A. Narayanaswamy, V. Modi
Space-cooling is dominating building energy use in warm regions. Integrating on-site PV generation with cooling systems is a potential building-scale decarbonization solution. However, designing the system to ensure cost-effectiveness and reliability is challenging since it requires solving a highly non-linear design and dispatch problem. This paper proposes a solution strategy to the design problem
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Synergistic effects of graphene oxide and fly ash on rheology, mechanical properties, and microstructure of highly-flowable cementitious grouts J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Cheng Liao, Benhai Lin, Miao Li, Guoqiang Dai, Songtao Hu
Due to their excellent mechanical strength and low pric, cementitious grouts have emerged as the popular for grouting applications. However, excessive use of cement results in significant energy consumption and associated carbon emissions, which is a concern from a sustainability perspective. In this study, inexpensive industrial waste fly ash (FA) was used to enhance the performance of graphene oxide
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Lifetime seismic fragility analysis of long-span spatial structures considering the wind-induced fatigue effect J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Jiacheng Song, Jiting Qu, Linsheng Huo
Long-span spatial structures are susceptible to cumulative fatigue damage over their lifespan due to prolonged exposure to wind loads. The degradation in material properties resulting from fatigue can impact the structure's performance to resist earthquakes. However, previous studies and current design specifications do not address the issue of wind-induced fatigue in long-span spatial structures,
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Assessment of renewable power generation applied in homestay hotels: Energy and cost-benefit considering dynamic occupancy rates and reservation prices J. Build. Eng. (IF 6.4) Pub Date : 2024-03-18 Jianing Luo, Mahmood Mastani Joybari, Yuku Ma, Jianwei Liu, Kee-hung Lai
Increasing the revenue from hotel operations and decreasing the stress on utility grids from hotel energy consumption are two priorities for the modern tourism industry. Dynamic occupancy rate and hotel reservation prices influence their operations revenue, while occupancy rate also impacts real hotel energy consumption. Renewable power generation as an effective measure can benefit hotels not only
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Performance of local supply-exhaust ventilation around stove with numerical simulation in a residential kitchen J. Build. Eng. (IF 6.4) Pub Date : 2024-03-17 Yu Liu, Chong Li, Hongqiang Ma, Xinmei Luo
A large number of fine particulate matters (PM) are generated during cooking, which have negative impacts on kitchen environment. This study proposed a novel ventilation strategy of local supply-exhaust ventilation around stove (LSEVAS) for improving air quality in a residential kitchen during cooking. Five factors affecting the performance of LSEVAS were explored with orthogonal design and computational
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Investigation on heat transfer performance of energy diaphragm walls under groundwater flow condition J. Build. Eng. (IF 6.4) Pub Date : 2024-03-16 Minghao Mi, Guoqing Cai, Xiaoge Li, Hailong Li, Wenjie Zheng, Yehui Shi
The flow of groundwater affects the transport of heat, subsequently impacting the heat transfer performance of energy diaphragm walls. To investigate the effect of groundwater flow on the thermal performance of energy diaphragm walls in the actual project, a three-dimensional finite element model of the thermo-hydro coupling was established. This model's accuracy was confirmed using in-situ experimental
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Acoustic emission for exploring loading rate impact on type I fracture mechanism of engineering cementitious composites after subjected to sub-high temperature J. Build. Eng. (IF 6.4) Pub Date : 2024-03-16 Shuling Gao, Zhaoyang Sun, Yanping Zhu
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Unveiling the performance of graphene nanofiber additives in gypsum plasters: A solid vs liquid perspective J. Build. Eng. (IF 6.4) Pub Date : 2024-03-16 Alejandro Martinez Gordon, María Isabel Prieto Barrio, Alfonso Cobo Escamilla
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Valorization of waste wood fly ash in environmentally friendly lime-based plasters with enhanced strengths for renovation purposes J. Build. Eng. (IF 6.4) Pub Date : 2024-03-16 Jitka Krejsová, Dana Koňáková, Vojtěch Pommer, Lucie Poláková, Robert Černý, Jiří Maděra, Eva Vejmelková