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Experimental and numerical investigation of a real-scale air to multiple PCM heat exchanger J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Bashir Eskander Kareem, Ahmed Mohammed Adham, Banipal Nanno Yaqob
Energy consumption by residential sectors has proliferated due to urbanization and lifestyle changes. Passive cooling and heating systems can reduce energy consumption and CO emissions in residential and commercial sectors. Phase change materials provide an efficient solution for passive energy storage, addressing a building's needs for free cooling and heating. These materials absorb and release heat
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Design and optimization of double-layer structure for improved electromagnetic wave absorbing characteristic of single-layer foam cement-based materials containing carbon black J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Huawei Li, Muwang Wei, Yuying Song, Rong Wang, Feiyu Liu, Feng Liu
Electromagnetic wave (EMW) absorbing properties are increasingly needed in cement-based materials; however, lightweight and broadband absorption properties are challenging to realize. This study aims to create lightweight, broadband, and highly efficient EMW-absorbing materials by investigating a foam cement-based material with single- and double-layer structures containing carbon black (CB). The results
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The study on uniaxial compression constitutive model of shape memory alloy fiber-reinforced concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Mingfang Shi, Guangping Xu, Jitao Zhao, Lidan Xu, Jiaqi Yuan, Ming Chen
The use of shape memory alloy (SMA) fiber can not only improve the compressive strength of concrete but also make it have a unique self-recovery function. In this paper, the uniaxial compression test of shape memory alloy fiber reinforced concrete (SMA-FRC) was carried out. The effect of fiber content and temperature on compressive strength was investigated. The predictive and constitutive models for
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Improving the efficiency of the trombe wall by integrating multi-fold glazing and sustainable materials: Ifrane, Morocco as a case study J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Hasna Oukmi, Badr Chegari, Ouadia Mouhat, Mohamed Rougui, Mohammed EL. Ganaoui, Marwane Cherkaoui
The Trombe wall is renowned for its effectiveness in passive heating during winter, but it can lead to overheating in summer. To address this issue, this study investigates a Trombe wall with fully opening glazing during the summer season, employing multi-fold glazing. The research, conducted in Ifrane, Morocco, focuses on a residential building using the Conduction Finite Difference Method within
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Experimental and theoretical study on flexural behavior of prestressed concrete beams strengthened by CFRP tendons with external unbonded retrofit system J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Longlong Chen, Xuhong Qiang, Peiyu Sun, Shiyou Zhang, Xu Jiang
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Image augmentation for nondestructive testing in engineering structures based on denoising diffusion probabilistic model J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Wei Shen, Dongyang Zeng, Yang Zhang, Xi Tian, Ziqi Li
The performance of data-driven deep learning models relies on the quantity and quality of training data available. The scarcity of data in structural damage detection having been an important restriction for its rapid development. An image data augmentation method based on the denoising diffusion probabilistic model (DDPM) is proposed to focusing on structural damage detection task in this study. This
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Durability study of seawater and sea-sand concrete under the combined effects of carbonation and chloride redistribution J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Yongqiang Li, Wei Liu, Tangwei Mi, Xiaobo Ding, Luping Tang, Feng Xing
This study presents experimental and numerical investigations to comprehensively assess the impact of carbonation on the durability of chloride-blended seawater and sea-sand concrete. It reveals that carbonation leads to a reduction in pH and results in chloride redistribution along the carbonation depth. The microstructure of concrete after carbonation exhibits increased compaction, reduced porosity
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Assessing the influence of external curing on the early drying shrinkage of ultra-high-performance concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Yang Du, Yanwei Zang, Xiaogang Li, Yi Li, Weiyong Wen, Shaoqin Ruan
Early drying shrinkage significantly impacts UHPC's cracking risks and structural stability in practical applications. This study uses a simulated curing system to explore how different external curing durations affect UHPC's early drying shrinkage, as well as its hydration degree and pore structures. The objective is to correlate pore sizes with shrinkage behaviors of UHPC under varying curing durations
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Void geometry analysis and multifaceted characterisation of cementitious mortar reinforced with short carbon and glass fibres – A comparative study J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Y. Tao, S.A. Hadigheh, Z. Wang
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Temperature dependence of concrete drying and a method for estimating the effect of temperature on the relative humidity in concrete pores J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Pauli Sekki, Petteri Huttunen, Timo Karvinen, Juha Vinha
In northern climates, the drying temperature of concrete floors under construction can range from 5 °C to 60 °C, covering average outdoor temperatures and potential increases to enhance drying. Given that the internal relative humidity (RH) of concrete is temperature-dependent, its effect on RH should be considered to eliminate the risk of moisture damage. The hygrothermic coefficient , which characterizes
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Determination of the trend and spatial distribution of microbial levels based on space and occupant characteristics J. Build. Eng. (IF 6.4) Pub Date : 2024-04-16 Dahae Seong, Mark H. Weir, Shamia Hoque
For buildings to move beyond the conventional criteria of comfort, we require more metrics and tools to design spaces that enhance health and safety where microbes play a significant role. The knowledge gaps that exist with respect to the indoor environment and microbes mean we have not been able to monitor microbial health in real time or inform building design to create infection-resilient indoor
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Analyzing recent active and passive cool roofing technology in buildings, including challenges and optimization approaches J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Ho Mun Ling, Ming Chian Yew, Ming Kun Yew, Lip Huat Saw
The escalating ambient temperatures are exacerbating indoor temperatures in every building. Within each building, the roofing system functions as the primary heat absorber. Traditionally, roofing systems were designed to protect physical assets. Given the rising demand for indoor quality, there is a growing need for roofing systems equipped with sustainable cooling features, namely cool roofing technology
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Techno-economic analysis of grid-connected PV and second-life battery systems for net-zero energy houses J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Özgür Özcan, A. Can Duman, Ömer Gönül, Önder Güler
Net-zero energy houses (ZEHs) rely on energy-efficient building design and the incorporation of distributed generation and battery energy storage units. Nevertheless, two primary concerns arise: high investment cost of these units and harmful environmental impact of batteries. Using second-life batteries can overcome these concerns by reducing the cost of photovoltaic (PV)-battery systems and mitigating
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Investigation on chloride releasing from coral aggregates to cement paste in coral aggregate concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Siyu Lin, Junjie Wang, Kefei Li, Bo Ran, Lei Xu, Rong Huang, Huiyu Tang, Zhe Ye
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Freezing-thawing durability and chemical characteristics of air-entrained sustainable concrete incorporated high-calcium fly ash in high-volume J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Dinil Pushpalal, Sunjidmaa Danzandorj, Bayarjavkhlan Narantogtokh, Tomoya Nishiwaki, Uuganbayar Sashka, Saruulbuyan Erdenebat, Chuluunbaatar Sambuu
This study purposed to find the maximum fly ash replacement ratio, which can provide guaranteed freezing and thawing durability if the air is appropriately entrained, as well as an understanding of how increments of fly ash replacement influence the hydration products. Compressive strength and freezing-thawing durability were measured on concrete specimens. X-ray diffraction, thermogravimetric analysis
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Numerical modelling on moisture and sulfate ion transport in unsaturated concrete slab under dry-wet cycles J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Guang-Ji Yin, Lin-Bin Li, Xiao-Dong Wen, Ling Miao, Sai-Sai Wang, Xiao-Bao Zuo
The spatio-temporal evolution of sulfate ion in concrete is important for the durability assessment of the structures under external sulfate attack (ESA) and dry-wet cycles. In this paper, the transport behavior of moisture and sulfate ion in unsaturated concrete under dry-wet cycles is numerically simulated. Firstly, the time-varying equation of sulfate ion concentration in concrete is firstly established
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Numerical investigation of the performance improvement of instantaneous gas water heater by introducing new geometries for the heat exchanger J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Alireza Parsaei, Koorosh Goudarzi
Tankless gas water heaters are known for their efficient energy consumption, as they only heat water on demand, resulting in reduced energy usage compared to traditional storage tank water heaters. A typical water heater uses a U-shaped heat exchanger. To enhance the performance of instantaneous gas water heaters, as well as reduce energy consumption and save energy in residential buildings, a numerical
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Enhancing the hygrothermal performance of corn cob residue-based eco-friendly building materials through biochar and microencapsulated phase change material incorporation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-15 Ji Yong Choi, Jihee Nam, Hyeonseong Yuk, Sungwoong Yang, Sumin Kim
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Prohibiting pure and saline water infiltration into organic-nano-coated calcium silicate hydrates surface: A nanoscale mechanisms analysis J. Build. Eng. (IF 6.4) Pub Date : 2024-04-14 Xiao-Dong Zhu, Ali Zaoui, W. Sekkal
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A review of the role of lightweight aggregates in the development of mechanical strength of concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Jan Fořt, Ayodele Afolayan, Igor Medveď, Lenka Scheinherrová, Robert Černý
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Analyzing energy performance in American low income households: A DataDriven approach with machine learning insights J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Sorena Vosoughkhosravi, Shaya Sheikh, Ehsan Kamel, Amirhosein Jafari
The energy burden within low-income households presents a significant societal challenge that necessitates a thorough understanding for developing effective and sustainable policies. However, very few studies analyze and model energy-related factors among low-income individuals. Thus, this study critically investigates the relationship between various buildings' characteristics and four distinct energy-related
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Analysis of structural integrity through the combination of non-destructive testing techniques in heritage inspections: The study case of San Segundo's hermitage (Ávila, Spain) J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Mercedes Solla, Miguel Ángel Maté-González, Cristina Sáez Blázquez, Susana Lagüela-López, Ignacio Martín Nieto
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A systematic review on studies of thermal comfort in building transitional space J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Guoying Hou, Xuanyi Zhai, Yiming Kuai, Ping Shu, Ping Zhang, Shen Wei
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How to promote carbon emission reduction in buildings? Evolutionary analysis of government regulation and financial investment J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Wei Wang, Shaojie Hao, Hua Zhong, Zhi Sun
Buildings account for a significant portion of global carbon emissions, necessitating strategies to accelerate decarbonisation in the construction sector. This research aims to analyse the behavioural strategies and interactions among governments, construction enterprises, and financial institutions in promoting building carbon emission reduction (CER) through an integrated regulatory and market-driven
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Mitigating train-induced building vibrations with rubber bearings designed for horizontal earthquake isolation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-12 Chunhui Wang, Jian Wang, Hao Chen, Jinping Ou
As rail transportation, including high-speed railways and urban metros, rapidly expands, its proximity to residential areas decreases, raising concerns about ground-borne vibrations. This study investigates the main characteristics of ground-borne vibrations induced by high-speed railways and metros through substructure method based on 2.5D FEM-MFS (finite element method-the method of fundamental solutions)
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Seismic performance assessment of a low-rise thin reinforced concrete wall building with unconnected fiber reinforced elastomeric isolators using real-time hybrid simulations J. Build. Eng. (IF 6.4) Pub Date : 2024-04-11 Bryan Castillo MSc., Sharick M. Vides MSc, Johannio Marulanda PhD., Albert R. Ortíz PhD., Peter Thomson PhD.
Thin reinforced concrete wall (TRCW) buildings have become one of the most cost-effective and fastest options for housing construction. However, the performance of the TRCW building under seismic loads has limited energy dissipation capacity and is characterized by brittle failures with dimensions below those limited in international standards, which classifies these walls as ultra-thin. By contrast
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Empirical modelling of the acoustic behavior of sheep wool/soy protein biocomposites J. Build. Eng. (IF 6.4) Pub Date : 2024-04-11 Marta Urdanpilleta, Romina del Rey, Itsaso Leceta, Juan C. Rodríguez, Jesús Alba, Pedro Guerrero
Many synthetic materials used as sound absorbers in building industry require many resources in their manufacturing process; therefore, searching for sustainable and eco-friendly alternatives, such as biocomposites with natural fibers embedded in a polymer matrix, is a promising option. In this work, soy protein was combined with 10, 15 and 20 wt % sheep wool by freeze-drying in order to develop porous
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Investigation of electromagnetic interference shielding performance of ultra-high-performance mortar incorporating single-walled carbon nanotubes and steel fiber J. Build. Eng. (IF 6.4) Pub Date : 2024-04-11 Serkan Subaşı, Muhammet Seis, İlker Tekin, Syed Minhaj Saleem Kazmi, Muhammad Junaid Munir, Osman Gencel, Togay Ozbakkaloglu, Muhammed Maraşlı
For security amenities and key infrastructure, construction materials with extraordinary mechanical, durability, and electromagnetic interference (EMI) shielding performance are essential. This study investigates the EMI shielding performance of ultra-high performance mortar (UHPM) incorporating single-walled carbon nanotubes (SWCNT) and steel fibers. Currently, no such work is present in the existing
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Effects of air-entraining agents and glass powder on the electromagnetic wave transmission and mechanical performances of sulfoaluminate cement J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Zigeng Wang, Yonghao Shen, Yue Li, Yaping Cheng
This study prepared a sulfoaluminate cement with high electromagnetic wave transmission performance by adding air entraining agent and glass powder and revealed the related mechanism. The test results showed the air-entraining agents and glass powder cannot affect the type of hydration products of the sulfoaluminate cement. The addition of the air-entraining agents and glass powder reduced the dielectric
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Effect of steel fiber orientation on punching shear resistance of steel fiber reinforced cementitious composites round slabs J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Ru Mu, Shaolin Mei, Jiao Chen, Xiaowei Wang, Na Liu, Xiangshang Chen, Longbang Qing, Yongxing Shi
The slab-column structure is commonly used in civil engineering. At the slab-column joints, the load from the slab is transmitted to the column. In the extreme state, punching shear failure may occur at the joints, and the failure is brittle without warning. When the punching shear failure occurs at the joint of round slab and column, usually the cracking is a conical shape because the direction of
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Damage and fracture investigation of self-compacting concrete in the filling layer of CRTS-III using three-point bending tests J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Leiyang Pei, Chengchao Guo, Jin Tang, Zhiwen An, Lei Qin, Xuanxuan Chu, Haibo Wang, Zhichuang Shi
Literature about filling layer self-compacting concrete (FLSCC) has indicated that FLSCC plays a crucial role in its application to Chinese railway track system III (CRTS-III). It is apparent that the damage characteristics of FLSCC have not been clearly investigated, as the actual working conditions are not considered enough. There exists a remaining gap about the mechanical properties and fracture
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Effects of macro basalt fibers on the tensile behavior of ultra-high performance concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Zhiyuan Chen, Xin Wang, Lining Ding, Kaidi Jiang, Chang Su, Qingguo Ben, Zhishen Wu
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Active and passive monitoring of corrosion state of reinforced concrete based on embedded cement-based acoustic emission sensor J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Rui Guo, Xiaofang Zhang, Xiujuan Lin, Shifeng Huang
In this paper, a cement-based acoustic emission sensor is embedded in reinforced concrete, and the corrosion damage inside the concrete is activated by swinging ball impact. The changes of low frequency and high frequency acoustic emission signals are captured and analyzed by the sensor, and the concept of low-high-frequency () is proposed. The changes of acoustic emission characteristics during the
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An improved stochastic subspace identification approach for automated operational modal analysis of high-rise buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Haoran Pan, Yi Li, Ting Deng, Jiyang Fu
The Stochastic Subspace Identification (SSI) method has attracted significant attention in the field of Operational Modal Analysis (OMA) for large civil engineering structures such as high-rise buildings. State-space-based identification methods often encounter the challenge of spurious modes, leading to extensive efforts to mitigate this issue, commonly through stabilization diagram techniques. Nonetheless
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Analysis of carbon emission differences between Chinese and Japanese buildings based on qualitative and quantitative comparisons J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Qi Wang, Xinghui Zhang, Cheng Guo, Hao Zhou, Yang Zhao, Borong Lin
As the world's largest carbon emitter, China's building-related carbon emissions contributed to 50.9 % of the country's total carbon emissions in 2020, making it an important area for carbon reduction. In contrast, Japan, one of the world's most energy-efficient nations, has already achieved carbon peaking. To further clarify the current status of China's building carbon emissions and explore a reasonable
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Preparation and characterization of double-shell phase change material microcapsules with flame retardancy and temperature regulation capability as low-emission building fillers J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Wei Lin, Chenchen Liang, Jielin Zeng, Jiaji Cheng, Yapeng Wang, Feng Zhang, Shaoxiang Li
The building application of phase change materials (PCMs) has attracted widespread attention due to energy conservation and emission reduction. In this study, designed and prepared by two-step polymerization poly melamine tetramethylene phosphonium sulfate (PMTMPS) coating the raw phase change materials microcapsules (MPCMs), which were novel double-shell microcapsules (D-MPCMs). D-MPCMs further achieved
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Study on the hysteretic characteristics of FRP-reinforced concrete shear wall with innovative friction dampers J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Shiying Xiao, Mengfu Wang, Zixiong Tan
FRP-reinforced concrete shear walls (FRCWs) are able to achieve satisfactory residual deformation and corrosion resistance compared with steel reinforced concrete walls (SRCWs). However, in the FRCWs, the failure of the plastic hinge region brings great challenges to the post-earthquake repair of the structure. Therefore, this paper designed one SRCW and two FRCWs with innovative friction dampers (FDs)
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Acoustic mechanism and noise reduction optimization of globe valve in air conditioning system J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Qianting Wang, Junyu Wang, Hengdong Zhuang, Juncheng Liu, Bo Jiang, Yongxing Song, Kepeng Zhang
The globe ball valve will invariably emit inevitably generates noise during operation. The flow field characteristics and sound field characteristics inside the shut-off throttle were obtained by numerical calculations. In order to suppress the noise, this paper proposes an optimized model for this type of valve. Optimization valves were set up for different simulation groups to identify the appropriate
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Experimental and theoretical analysis of the solar adsorption refrigeration system under south Iraq climate condition J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Rafid M. Hannun, Aqeel Ahmed Abed, Hussein Togun, Hayder I. Mohammed, Zainab A. Lafta, Zahraa N. Abdul hussain, Goodarz Ahmadi
This study investigates the performance of a solar adsorption refrigeration system utilizing activated carbon and methanol as the adsorbent/adsorbate combination in the context of the climate conditions in southern Iraq. The primary aim is to develop an efficient and environmentally friendly refrigeration technology that can operate off-grid, particularly in regions with limited access to electricity
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Effect of peanut and sunflower shell ash on properties of sustainable high-strength concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Mohamed Amin, Abdullah M. Zeyad, Ibrahim Saad Agwa, Ashraf M. Heniegal
The aim of this study is to utilize agricultural waste ash as a partial replacement for cement to create sustainable high-strength concrete (SHSC). A maximum of 40 % of the cement mass was substituted with silica fume (SF), peanut shell ash (PSA), and sunflower shell ash (SSA). Tests were conducted on the fresh, hardened, and transport properties of SHSC, as well as on the microstructure, to evaluate
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Cluster analysis applied to obtaining reference models for building thermal performance studies J. Build. Eng. (IF 6.4) Pub Date : 2024-04-10 Aline Schaefer, Taylana Piccinini Scolaro, Enedir Ghisi
Cluster analysis has often been used to obtain reference models. However, using different methods in each analysis step may yield different results. Furthermore, the validation of the results is often neglected. This study aims to develop a cluster analysis method to obtain reference models for use in thermal performance studies of buildings from different clustering configurations. The procedure proposed
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Make-up air optimization and demand exhaust rate of commercial kitchens under multiple cookers operation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Chengquan Zhang, Fan Yang, Yunfei Xia, Lianjie He, Yanlei Yu, Lingjie Zeng, Changsheng Cao, Jun Gao
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A novel method for post-earthquake functional evaluation of city building portfolios J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Shuang Li, Binbin Hu, Zhixin Hou, Changhai Zhai
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Enhancing mechanical performance and durability of high strength mortar with incineration bottom ash via Al2O3 micro-powder: An experimental study J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Qun Wang, Hongyan Chu, Jinyang Jiang, Binrong Zhu
The untreated application of municipal solid waste incineration bottom ash (IBA) in cementitious materials can lead to compromised workability, deterioration of mechanical properties, and compromise durability. This paper examines the potential of utilizing AlO micro-powder (ALMP) to enhance the mechanical performance and durability of cementitious materials fabricated with IBA. This paper focuses
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Spatial distribution of CO2 Impact on the indoor air quality of classrooms within a University J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Norhayati Mahyuddin, Emmanuel A. Essah
Indoor air quality (IAQ) remains a public and global concern. While CO does not pose health risks to occupants, high CO levels indicate insufficient ventilation, potentially accumulating pollutant concentrations. In buildings, occupants are identified as the main source of indoor carbon dioxide (CO) through exhalation. Standard classrooms may have occupant density between 1.8 and 2.4m/person. Therefore
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Floor plan reconstruction from indoor 3D point clouds using iterative RANSAC line segmentation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Xiang Gao, Ronghao Yang, Junxiang Tan, Yan Liu
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Enhanced freeze-thaw resilience of cement mortars through Nano-SiO2 and single/hybrid basalt fiber incorporation: Assessing workability, strength, durability J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Soner Guler, Zehra Funda Akbulut, Hocine Siad, Mohamed Lachemi
This study investigated how freeze-thaw cycles (FTC) impact concrete durability and structural integrity, exploring novel approaches like integrating nanomaterials and fibers into concrete compositions. After subjecting the materials to FTC, the study evaluated mortars enriched with nano-SiO (NS) and micro- and macro-basalt (BA) fibers. NS was incorporated by substituting 1 % and 2 % of the cement
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Experimental investigation of the mechanical performance of novel rigid connections in prestressed circular composite precast concrete columns under cyclic lateral loading J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Caiwei Xu, Le Li, Saeed Miramini, Lihai Zhang
The present study introduces an advanced design of Prestressed Circular Composite Precast Concrete Columns (PCCPCCs), which have been applied in real-world structures, equipped with two novel rigid connection types ( the reinforcing-cage connection and the welded-plate connection) to address existing challenges in the design, construction, and quality control of traditional precast concrete (PC) columns
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Comprehensive evaluation of natural ventilation potential of buildings in urban areas under the influence of multiple environment-related factors J. Build. Eng. (IF 6.4) Pub Date : 2024-04-09 Jie Xiong, Baizhan Li, C. Alan Short, Prashant Kumar, Christopher Pain
Realistic natural ventilation potential estimation is critical for energy-efficient building design. For buildings in urban areas, evaluations using design expectations tend to overestimate potential. This study presents a comprehensive framework and corresponding method to predict the natural ventilation potential of buildings, integrating multiple key environmental factors of climate features, local
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Energy analysis of a nonlinear gas-spring dynamic vibration absorber subjected to seismic excitations J. Build. Eng. (IF 6.4) Pub Date : 2024-04-08 Kunjie Rong, Meng Yang, Zheng Lu, Jiawei Zhang, Li Tian, Siyuan Wu
Nonlinear control methods and devices have been widely used in seismic vibration reduction of engineering structures. A nonlinear gas-spring dynamic vibration absorber (NGSDVA) has been recently proposed by the authors and demonstrates a wideband vibration suppression capability across various excitation amplitudes. In this study, an energy analysis method for a multi-story structure with NGSDVA attached
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Reconnaissance report on damage caused by the February 6, 2023, Kahramanmaraş Earthquakes in reinforced-concrete structures J. Build. Eng. (IF 6.4) Pub Date : 2024-04-08 Sedef Kocakaplan Sezgin, Gökhan Barış Sakcalı, Süleyman Özen, Eray Yıldırım, Eyübhan Avcı, Beyhan Bayhan, Naci Çağlar
Two destructive earthquakes occurred in Kahramanmaraş on February 6th, 2023, with magnitudes of Mw = 7.7 and Mw = 7.6, respectively, causing loss of lives and economic loses. A field investigation was carried out in the affected area between February 12th and 26th, 2023, and the findings are detailed in this paper focusing on the damages and causes of failures in reinforced concrete (RC) structures
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A comprehensive analysis of hydration kinetics and compressive strength development of fly ash-Portland cement binders J. Build. Eng. (IF 6.4) Pub Date : 2024-04-08 Rohan Bhat, Taihao Han, Gaurav Sant, Narayanan Neithalath, Aditya Kumar
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Assessment of physical and mechanical properties of concrete with carbon nanotubes pre-dispersed in cement J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 E.D. Reis, H.F. Resende, A.L. Christoforo, R.M. Costa, F. Gatuingt, F.S.J. Poggiali, A.C.S. Bezerra
The expanding field of nanoengineering modification of cementitious materials increasingly supports advances and innovations in science and engineering through nanotechnology. In this context, this research evaluates the physical and mechanical properties of concrete with carbon nanotubes (CNT–concrete), including compressive strength (), tensile strength (), static () and dynamic modulus of elasticity
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Experimental and analytical studies on interfacial shear behavior of socket connections with shear keys J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 Xinyi Zhou, Xin Nie, Ran Ding
Socket connections with shear key interfaces have been widely used in precast building and bridge construction, of which the interfacial shear capacities become the main concern. Despite various previous studies, the force transfer mechanisms of shear key joints in socket connections have not been investigated thoroughly. In this paper, push-off tests were carried out on 16 specimens to investigate
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Assessment of thermal and mechanical properties of fly ash based geopolymer blocks with a sustainability perspective using multi-criteria decision-making approach J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 Supriya Janga, Ashwin Narendra Raut, Anant Lal Murmu
Owing to the raising consciousness about the environment, geopolymers are slowly gaining the trust of researchers globally as the potential alternatives for the conventional building materials. Though, geopolymer emit far less CO than conventional building materials, the distance between the source and production site for a particular raw material can have significant impact on the environment. Thus
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Preparation of geopolymers from thermally activated lithium slag: Activity enhancement and microstructure J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 Xiaofeng Luo, Liang Huang, Libo Yan, Yin Li, Linggang Wei, Zhijun Chen, Yiqun Qu
As an industrial by-product of the lithium extraction process from spodumene, lithium slag (LS) is less reactive, rendering it a chemically infeasible binder. In this study, a thermal activation approach was employed to enhance the reactivity of LS. The underlying mechanisms of LS's thermal activation at various temperatures were thoroughly explored through XRD and ICP. The results indicated that alterations
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Monotonic testing of single shear-plane CLT-to-CLT joint with hardwood dowels J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 Aivars Vilguts, Adam R. Phillips, Ruben Jerves, Chrissi Antonopoulos, Darrin Griechen
Reducing embodied carbon emissions in buildings and striving for carbon neutrality through sustainable design has become a primary goal in the construction industry. The industry is expanding its use of wood-engineered products, such as cross-laminated timber (CLT) to achieve those sustainability goals. Furthermore, replacing steel fasteners with lower embodied carbon alternatives is gaining increased
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An airflow velocity field reconstruction method with sparse or incomplete data using physics-informed neural network J. Build. Eng. (IF 6.4) Pub Date : 2024-04-07 Gang Jing, Huan Wang, Xianting Li, Guijin Wang, Yingying Yang
Velocity field is critical for creating a healthy and comfortable indoor environment but it is difficult to be measured experimentally. Due to the limitations of measurement instruments and site conditions, the captured data are usually sparse, incomplete, and low-dimensional, which limits further research on indoor velocity field. This study proposes a practical reconstruction and super-resolution
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Carbon emission evaluation of eight different prefabricated components during the materialization stage J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Aiyan Xu, Yiyun Zhu, Zhengping Wang