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How information asymmetries exacerbate building defects risks for purchasers of Australian residential multi-owned properties Build. Res. Inf. (IF 3.9) Pub Date : 2024-03-15 Laura Crommelin, Martin Loosemore, Hazel Easthope, Bill Randolph
Increasing urbanization is driving rapid growth in residential multi-owned properties (RMOPs) worldwide. Concerns about the quality of these buildings are also growing in many countries. Yet resear...
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Seismic bearing capacity of strip footings placed on reinforced soil slopes using slip line method Geotext. Geomembr. (IF 5.2) Pub Date : 2024-03-15 Majd Tarraf, Ehsan Seyedi Hosseininia
This study investigates the seismic vertical bearing capacity of strip footings positioned on reinforced soil structures employing a two-phase approach and the slip line method. The investigation aims to establish a slip line field and determine the critical slip surface without any assumptions of predefined surfaces. The obtained results are compared with previous studies, demonstrating a good agreement
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Occupant experience of domestic kitchen environments in low-energy social and affordable housing in Scotland Build. Res. Inf. (IF 3.9) Pub Date : 2024-03-13 Janice A. Foster, Anna Poston
New housing design has changed rapidly due to legislative requirements for energy-efficiency improvements. While housing energy efficiency is improving, little attention is given to individual indo...
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Enriching BIM models with fire safety equipment using keypoint-based symbol detection in escape plans Autom. Constr. (IF 10.3) Pub Date : 2024-03-13 Phillip Schönfelder, Angelina Aziz, Frédéric Bosché, Markus König
In the context of fire safety inspections, Building Information Modeling (BIM) models enriched with Fire Safety Equipment (FSE) components can be used to complete compliance checks and other analyses. However, BIM models often lack the required FSE information. To address this issue, escape plans are a convenient source of data, as they show the position and type of FSE on floor plans. Therefore, this
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3D object recognition using deep learning for automatically generating semantic BIM data Autom. Constr. (IF 10.3) Pub Date : 2024-03-13 Kay Rogage, Omar Doukari
The successful reuse of Building Information Model (BIM) data is reliant on the use of clearly defined objects. File formats such as the Industry Foundation Classes (IFC) along with classification systems offer approaches to standardising semantic BIM data. Inconsistent application of these standards during BIM authoring results in objects that are unable to be reused across systems. This research
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Comparison of pull-out capacities of robotically and manually drilled and set fasteners Autom. Constr. (IF 10.3) Pub Date : 2024-03-13 Maximilian Ortner, Michael Schwenn, Benjamin Kromoser
The performance of post-installed fasteners in concrete can be affected by the chosen drilling and setting techniques. In the context of the development of a drilling robot for construction site implementation the impact of an automated setting process on the pull-out loads of fastening systems was evaluated. This article investigates the effect of two different fixing systems, drop-in expansion and
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Multiple-type distress detection in asphalt concrete pavement using infrared thermography and deep learning Autom. Constr. (IF 10.3) Pub Date : 2024-03-13 Fangyu Liu, Jian Liu, Linbing Wang, Imad L. Al-Qadi
Artificial intelligence, particularly Convolutional Neural Network (CNN), has emerged as a highly effective methodology for detecting pavement distresses. This study aimed to apply infrared thermography (IRT) and deep learning to multiple-type distress detection. The dataset encompassed five image types (visible images, infrared images, and fusion images with varying infrared ratios) along with five
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Experimental evaluation of geosynthetic-modular block connection loads Geotext. Geomembr. (IF 5.2) Pub Date : 2024-03-13 F.H.M. Portelinha, P.V.C. Figueiredo, J.G. Zornberg
The design of segmental geosynthetic mechanically stabilized walls with masonry block facing is often governed by the loads that develop at the connection between the facing and geosynthetic. Yet the current understanding of the mechanisms involved in the mobilization of such connection loads is, at best, incomplete. The testing apparatus developed as part of this study facilitates simulating the transference
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Intelligent green retrofitting of existing buildings based on case-based reasoning and random forest Autom. Constr. (IF 10.3) Pub Date : 2024-03-12 Tianyi Liu, Guofeng Ma, Ding Wang, Xinming Pan
The decision-making on green retrofitting of existing buildings relies on both explicit and implicit knowledge, and its efficiency and reliability need improvement. Intelligent approaches that can sufficiently utilize the text information of existing projects are required to provide more suitable strategies for green retrofitting. This paper describes a decision-making approach combining Case-Based
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Computer-aided rotary crane stability assessment Autom. Constr. (IF 10.3) Pub Date : 2024-03-12 Paweł Kwiatoń, Dawid Cekus, Paweł Waryś
This paper introduces a computer-aided approach for evaluating the stability of rotary cranes. Utilizing the Motion add-in within the SolidWorks package, a comprehensive numerical stability analysis was carried out. The interaction dynamics between the crane’s support system and the ground were modeled employing linear springs, while the rope system was characterized by a blend of linear spring and
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Electric shovel trajectory tracking with inversion sliding mode based on Lyapunov functions Autom. Constr. (IF 10.3) Pub Date : 2024-03-12 Zeren Chen, Wei Guan, Jianbo Guo, Duomei Xue, Zhengbin Liu, Guoqiang Wang, Long Quan
The harsh actual working environment and heavy weight of the electric shovel pose a great challenge to its trajectory tracking performance. Taking into account the strong robustness and anti-interference performance of the sliding mode control method and the global stability of the inversion control method, a Lyapunov-based inversion sliding mode trajectory tracking method is proposed in this paper
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Nuclear containment damage detection and visualization positioning based on YOLOv5m-FFC Autom. Constr. (IF 10.3) Pub Date : 2024-03-12 Jian Yu, Yaming Xu, Cheng Xing, Jianguo Zhou, Pai Pan, Peng Yang
This paper designs an acquisition system that automatically captures images of the nuclear containment and proposes a new automatic defect detection technology based on the YOLOv5 model to detect the damage of the nuclear containment. The proposed model combines YOLOv5 and Focal NeXt block to improve the feature extraction ability of the model, adds attention mechanism to suppress the interference
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Prior knowledge‐infused neural network for efficient performance assessment of structures through few‐shot incremental learning Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-03-12 Shi‐Zhi Chen, De‐Cheng Feng, Ertugrul Taciroglu
Structural seismic safety assessment is a critical task in maintaining the resilience of existing civil and infrastructures. This task commonly requires accurate predictions of structural responses under stochastic intensive ground accelerations via time‐costly numerical simulations. While numerous studies have attempted to use machine learning (ML) techniques as surrogate models to alleviate this
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Autonomous flight strategy of an unmanned aerial vehicle with multimodal information for autonomous inspection of overhead transmission facilities Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-03-12 Munsu Jeon, Joonhyeok Moon, Siheon Jeong, Ki‐Yong Oh
This study proposes an innovative method for achieving autonomous flight to inspect overhead transmission facilities. The proposed method not only integrates multimodal information from novel sensors but also addresses three essential aspects to overcome the existing limitations in autonomous flights of an unmanned aerial vehicle (UAV). First, a novel deep neural network architecture titled the rotational
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Investigation into the effect of rounded building corner on wind loads of flat-roof-mounted solar arrays J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 S.F. Dai, H.J. Liu, H.Y. Peng
Wind tunnel tests were performed to investigate the wind loading on flat-roof-mounted solar arrays. Effects of panel parameters (panel location and tilt angle ) and building parameters (parapet height and rounded building corner) were examined. Moreover, the aerodynamic mechanism was investigated by computational fluid dynamics (CFD) simulations. The largest most critical mean loads fluctuated greatly
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Material and structural properties of recycled coarse aggregate concrete made with seawater and sea-sand: A review J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Kaijian Zhang, Qingtian Zhang, Wenqiang Lin, Junrui Ou
This paper presents a review of the research on seawater sea-sand recycled coarse aggregate concrete (SSRAC), which offers a solution to the scarcity of river sand and freshwater while also promoting the reuse of waste concrete. The study reveals that the conventional mix proportion design method underestimates the compressive strength of SSRAC at 28 days. The incorporation of seawater and sea-sand
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Secondary durability implications: Steam cured, carbonated concrete containing limestone filler, and GGBFS J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Runxiao Zhang, Daman K. Panesar
The motivation of this work is three-fold: jurisdictions are moving from general use (GU) cement to general use limestone (GUL) cement or Portland cement (PC) to Portland limestone cement (PLC), in addition; ‘carbonation curing regimes’ are being widely considered/studied/implemented; and modular construction using precast elements are all possible means to achiever ‘lower concrete’ systems. This study
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Prediction of non-uniform shrinkage of steel-concrete composite slabs based on explainable ensemble machine learning model J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Shiqi Wang, Jinlong Liu, Qinghe Wang, Ruihong Dai, Keyu Chen
The non-uniform shrinkage (NUS) of steel-concrete composite slabs has been proved to significantly affect the long-term performance of composite slabs. But the reliable analysis method has not yet been proposed due to the multi-factor coupling mechanism of material composition and boundary conditions. A database containing 782 samples was established in this paper, and the indicator set containing
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The elderly wayfinding performance in an informative healthcare design indoors J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Amir Ehsan Pouyan, Abdul Hamid Ghanbaran, Abbas Hosseinzadeh, Amir Shakibamanesh
This study examines the influence of architectural design elements and age on the wayfinding performance (WP) of older adults in healthcare circulation patterns. The study was conducted at Milad Hospital in Tehran, Iran, and included the Emergency, Outpatient, Clinics, and Inpatient wards. The study used a quantitative research method to investigate and virtual reality (VR) to simulate. Wayfinders
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Experimental research of photovoltaic-valley power hybrid heating system with phase change material thermal storage J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Qunli Zhang, Tao Liu, Xuanrui Cheng, Yimo Liu, Wenjing Zhang, Qiuyue Zhang
The widespread integration of high-ratio distributed photovoltaic (PV) systems in buildings calls for flexible load management to align with municipal power peaks and PV variability. To address the timing and demand mismatches between PV generation and building energy needs, energy storage systems are used to manage PV excess, aid in grid peak shaving, and support building heating. This research develops
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Durability assessment of geopolymeric and cementitious composites for screed applications J. Build. Eng. (IF 6.4) Pub Date : 2024-03-12 Joud Hwalla, Hilal El-Hassan, Joseph J. Assaad, Tamer El-Maaddawy
This research aims to assess the mechanical, durability, and microstructure properties of screed flooring composites produced with different binding materials. Ordinary Portland cement and fly ash were used to produce the cement-based materials, while fly ash and ground granulated blast furnace slag were activated by alkaline solution to formulate the geopolymers. Dune sand and crushed limestone sand
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Electroosmosis of gold tailings under multiple electrokinetic geosynthetics electrodes Geotext. Geomembr. (IF 5.2) Pub Date : 2024-03-12 Changbo Du, Ben Niu, Fu Yi, Meng Wang, Xinqi Jiang
In dry-stack tailing ponds with high fine-grained content, a high long-term saturation line can lead to dam failure. Electroosmotic consolidation is an effective method for reducing dam saturation lines. However, traditional electrodes have low corrosion resistance and poor contact, which limits the development of electroosmotic drainage technology for tailings. In this study, an electroosmotic drainage
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Review of simultaneous localization and mapping (SLAM) for construction robotics applications Autom. Constr. (IF 10.3) Pub Date : 2024-03-11 Andrew Yarovoi, Yong Kwon Cho
With the increasing affordability of robot technologies and the reduction in size and weight of autonomous systems, the deployment of autonomous robotic systems on construction sites has gained significant attention. One major challenge faced by these systems is the accurate mapping and localization within an environment that constantly evolves on a daily basis. This computational problem, known as
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In‐fleet structural health monitoring of roadway bridges using connected and autonomous vehicles’ data Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-03-11 Hoofar Shokravi, Mohammadreza Vafaei, Bijan Samali, Norhisham Bakhary
Drive‐by structural health monitoring (SHM) is a cost‐efficient alternative to the direct SHM of short‐ to medium‐size bridges requiring no sensors to be installed on the structure. However, drive‐by SHM is generally known as a short‐term monitoring technique due to the challenges associated with using multiple passages of instrumented vehicles for a long time. This paper proposes combining the potentiality
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Advancing the white phase mobile traffic control paradigm to consider pedestrians Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-03-11 Ramin Niroumand, Leila Hajibabai, Ali Hajbabaie
Current literature on joint optimization of intersection signal timing and connected automated vehicle (CAV) trajectory mostly focuses on vehicular movements paying no or little attention to pedestrians. This paper presents a methodology to safely incorporate pedestrians into signalized intersections with CAVs and connected human‐driven vehicles (CHVs). The movements of vehicles are controlled using
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Sustainable off-grid residential heating and desalination: Integration of biomass boiler and solar energy with environmental impact analysis J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Jing Zhu, Tirumala Uday Kumar Nutakki, Pradeep Kumar Singh, Barno Sayfutdinovna Abdullaeva, Xiao Zhou, Yasser Fouad, Laith H. Alzubaidi
As global energy demand rises and the environmental impact of fossil fuel-based heating systems becomes increasingly evident, transitioning to renewable energy sources like solar and biomass for residential use is imperative. This is further underscored by the growing scarcity of freshwater resources, especially in arid urban environments. This study introduces an innovative off-grid system that effectively
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Optimal energy dissipation ratio of base-rocking walls J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Arman Abdollahi, Abouzar Jafari, Esmaeil Mohammadi Dehcheshmeh
Base-rocking walls (BRWs) were excellent in maintaining enhanced post-earthquake serviceability and decreasing repair costs and downtime. However, little research has been aimed at finding the optimal range of energy dissipation ratio for designing BRWs. In this study, an approach was developed first for designing BRWs to obtain an intended level of energy dissipation capacity. Using the proposed approach
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Experimental and numerical investigations on fire development in a timber-based compartment with identification of characteristic events J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Haowei Hu, Zhenyao Qi, Jingjun Shi, Hang Li, Jie Ji
An experiment and numerical simulations were carried out to investigate the mechanism of the incipient and growth stages of a building fire. The building, constructed in the 1980s with wooden components, has one compartment and one opening. The average fire load density was 1495.3 MJ/m, including the wooden columns, beams, furniture, etc. The evolution of indoor temperature, gas concentration, gas
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An interpretable feature selection method integrating ensemble models for chiller fault diagnosis J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Jian Bi, Hua Wang, Mei Hua, Ke Yan
Timely diagnosis of chiller faults is crucial for indoor comfort and building energy saving with the number of sensors being minimized. To address this challenge and select the top important features for chiller diagnosis (FD), a novel feature selection method (FSM) with interpretability is proposed for chiller FD. The proposed method integrates four ensemble models, namely, random forest, XGBoost
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Cross-physical field prediction method for smoke field distribution in commercial building fire based on distributed optical fiber sensor J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Lan Wang, Hansong Lu, Guanhua Qu, Lei Ren, Zongwu Xu, Gang Liu, Ming Yan, Zenghui Liu
In modern commercial building spaces, the smoke generated during indoor fires poses a substantial safety threat to individuals attempting to evacuate. This study leveraged a distributed optical fiber temperature sensing system as the technological foundation. A series of commercial building space models were constructed by employing fire dynamics simulations, and a comprehensive database of simulated
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A drone-based approach to enhance spatial insight into surrounding air pollutant distributions for healthier indoor environments J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Murat Bakirci
Current investigations into the interplay between indoor and outdoor air quality in buildings often rely on limited measurements of a small subset of air pollutants taken outside the structure. Implicit in this methodology is the assumption of a homogeneous distribution of air pollutants around the building, a premise that may not accurately reflect real-world conditions. This study introduces a more
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Understanding the influence of ultrasonic power on the hydration of cement paste J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Guangqi Xiong, Yuanliang Ren, Xiaolong Jia, Zheng Fang, Keke Sun, Qian Huang, Chong Wang, Shuai Zhou
This paper studied the dispersion and hydration of cement paste prepared by power ultrasound (PUS)-assisted mixing technology. The ultrasonic power used were 0 W, 480 W and 912 W. The hydration process and microstructure were tested by using isothermal calorimetry, X-ray diffraction (XRD), thermogravimetric-differential scanning calorimetry (TG-DSC), solid-state nuclear magnetic resonance silicon (Si-NMR)
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Chloride binding of barium-containing zeolite corrosion inhibitor in Portland cement mortar J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Zhongtao Luo, Han Pan, Xiaohai Liu, Tianyi Zhi, Kunpeng Yin, Mingkang Gao, Yifan Yang, Mengxiao Ge, Guixun Li
The use of sea sand is limited in reinforced concrete due to the presence of corrosive free chloride ions. In this study, a barium-containing zeolite corrosion inhibitor was designed and added into mortar to improve the chloride binding ability by avoiding the interference of SO in forming chloroaluminate salts under the condition of ensuring the necessary setting time of the mortar. Ion dissolution
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Application of green agro-based nanoparticles in cement-based construction materials: A systematic review J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Safiki Ainomugisha, Moses Matovu, Musa Manga
Nanoparticles (NPs) based on agro-wastes and plant extracts have recently gained attention as supplementary cementitious materials (SCMs) in cement-based construction materials (CBMs) because they are environmentally friendly, low-energy consuming, and affordable. However, the sources, synthesis methods, characteristics, and effects of these materials on the performance of CBMs have not been thoroughly
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Virtual reality application to explore indoor soundscape and physiological responses to audio-visual biophilic design interventions: An experimental study in an office environment J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Arianna Latini, Simone Torresin, Tin Oberman, Elisa Di Giuseppe, Francesco Aletta, Jian Kang, Marco D'Orazio
Among the major sources of disturbance in offices, noise and poor acoustics consistently rank at the top. Moreover, the positive impact which connecting with nature has on individuals is well-documented, yet still not investigated in-depth in terms of office soundscapes. In the present study, a methodology using Virtual Reality (VR) technology is employed to analyse the benefits of Biophilic Design
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Investigation on the effect of physical parameters of PCMs on the exothermic properties of energy storage units of bilayer tubes J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Endi Zhang, Xulin Li, Guohui Feng, Qiang Wu, Yuhao Wu, Jiayu Li
Based on the structure of bilayer tube energy storage unit (ESU), the study investigates the effects of physical parameters and arrangement combinations of phase change materials (PCMs) on the heat storage and exothermic performance of the ESU. The control variable method is used to focus on a single physical parameter of the phase change material to analyze its influence on the heat storage and exothermic
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Exploring the influence of calcinated eggshell powder on lightweight foamed concrete: A comprehensive study on freshness, mechanical strength, thermal characteristics and transport properties J. Build. Eng. (IF 6.4) Pub Date : 2024-03-11 Ahmed M. Maglad, Md Azree Othuman Mydin, Samadar S. Majeed, Bassam A. Tayeh, Dina E. Tobbala
This research aimed to explore the feasibility of using calcined eggshell powder (CESP) as a substitute for cement in the production of lightweight foamed concrete (LWFC), considering its high calcium content. Ten LWFC mixtures consisting of two densities of 600 kg/m and 1200 kg/m were produced and tested. Each density comprised mixtures with varying proportions of CESP, ranging from 0% to 20% in increments
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Automated detection of railway defective fasteners based on YOLOv8-FAM and synthetic data using style transfer Autom. Constr. (IF 10.3) Pub Date : 2024-03-10 Shi Qiu, Benxin Cai, Weidong Wang, Jin Wang, Qasim Zaheer, Xianhua Liu, Wenbo Hu, Jun Peng
Fastener damage detection is an integral component of track safety inspections. The lack of balanced dataset caused by insufficient data on defective fasteners poses a significant challenge to the current development of robust fastener detection models. This study proposes the YOLOv8-FAM detection model algorithm, which combines the enhanced capabilities of YOLOv8, and generates realistic images of
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Effects of outdoor activity intensities on college students’ indoor thermal perception and cognitive performance J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Xiaoyan Ma, Yichen Li, Yang Li, Yuange Zheng, Bo Hong
Using neurobehavioral tests, electroencephalogram signal monitoring, and questionnaire surveys, we recruited 158 healthy college students to explore the effects of light, moderate, and vigorous intensity activities on indoor thermal perception, cognitive performance, physical health and emotions in a hot outdoor environment. Our results suggested four principal outcomes: 1) compared with the pre-exercise
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Revealing and optimizing the design of cover installation for outdoor units of air conditioners through CFD simulations and thermodynamic modeling J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Jiyuan Wu, Lan Wang, Tianzhen Hong, Qinran Hu, Wei Wang
When renewing building facades in most Chinese cities, covers are often designed and installed to conceal the outdoor units of residential split air conditioners for congruousness of building facades. However, how those covers impact airflow and energy efficiency should be thoroughly examined. This study investigates two popular designs of cover (louver and circular-hole) and selects Nanjing, renowned
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3D printed sustainable low-cost materials for construction of affordable social housing in Brazil: Potential, challenges, and research needs J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Eduarda A. de Souza, Paulo H.R. Borges, Thorsten Stengel, Behzad Nematollahi, Freek P. Bos
3D Concrete Printing (3DCP) is presented as an important process in the future of civil engineering, as it accelerates the construction process, reduces labor costs, and potentially generates significantly less waste materials. Currently, 3DCP has been delayed as a technical solution for Latin American. However, it could be an important option for tackling the housing deficit in developing countries
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Effect of dry process manufactured sands dust on the mechanical property and durability of recycled concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Yiping Zhu, Peng Wang, Haoping Guo, Rongrong Lou, Weidong Ye, Yuan Liu, Ke Liu
Manufactured sand dust, a by-product of manufactured sand production, presents a substantial environmental concern. This study explores the viability of utilizing dust derived from three distinct lithologies (diabase, tuff, and basalt) as a supplementary cementitious material. The investigation primarily focuses on the impact of dust type and dosage on various concrete properties, including compressive
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Effect of personalized air curtain combined with mixing ventilation on dispersion of aerosols released at different velocities from respiratory activities during close contact J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Jingcui Xu, Cunteng Wang, Hai Guo
Release velocities of aerosols vary among people and respiratory activities. To better promote the application of personalized air curtain (PAC) in practice, this work investigated the performance of PAC combined with mixing ventilation in terms of dispersion of aerosols released at different velocities using a simulation approach of computational fluid dynamics (CFD). The healthy person (HP) and infected
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Energy performance analysis of alternative building retrofit interventions for the four climatic zones of Greece J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Angeliki Kitsopoulou, Nikolaos Ziozas, Petros Iliadis, Evangelos Bellos, Christos Tzivanidis, Nikolaos Nikolopoulos
Climatic conditions determine which retrofit strategy can result in a satisfactory improvement of a building's thermal performance. This study systematically investigates alternative retrofit actions, as standalone and in combination, and assesses their energy performance. The retrofit actions include i) insulation on the external walls, ii) the incorporation of phase change material (PCM) on the roof
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Flexural fatigue properties of concrete based on different replacement percentage of natural sand with manufactured sand J. Build. Eng. (IF 6.4) Pub Date : 2024-03-09 Qingling Meng, Xiaofeng Jing, Hailiang Wang, Xiaoyu Guo, Jinbo Song, Jiantao Du
Compression and flexural fatigue tests were conducted on concrete specimens with varying strengths under different replacement percentages of natural river sand (R-sand) with manufactured sand (M-sand) at 0%, 30%, 70%, and 100%. The objective was to compare and analyse differences in fatigue damage of concrete across different replacement percentages. Findings were made that when the replacement percentage
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Identifying Chinese students’ perceptions of smart classrooms and their relationships with design features Build. Res. Inf. (IF 3.9) Pub Date : 2024-03-07 Fei Qi, Lin Jiang, Yi Chen, Liwei Zhu, Yilin Jiang
Taking classes in a smart classroom is a novel experience for most college students in China, and comprehensive research on how Chinese students perceive smart classroom environments is limited. Th...
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Deep learning-based structural health monitoring Autom. Constr. (IF 10.3) Pub Date : 2024-03-08 Young-Jin Cha, Rahmat Ali, John Lewis, Oral Büyükӧztürk
This article provides a comprehensive review of deep learning-based structural health monitoring (DL-based SHM). It encompasses a broad spectrum of DL theories and applications including nondestructive approaches; computer vision-based methods, digital twins, unmanned aerial vehicles (UAVs), and their integration with DL; vibration-based strategies including sensor fault and data recovery methods;
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A multiscale model for wood combustion Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-03-08 H. L. Hao, R. Y. Qin, C. L. Chow, D. Lau
Understanding wood combustion has become increasingly critical as fire safety engineering moves toward a performance‐based approach to building design. Although different kinetic models have been developed for wood burning, chemical kinetics remains a significant challenge for accurate prediction. This work has developed a novel multiscale model by implementing kinetic parameters calculated from molecular
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BIM-based automated fault detection and diagnostics of HVAC systems in commercial buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Arash Hosseini Gourabpasi, Mazdak Nik-Bakht
In order to meet the growing demand for effective Automated Fault Detection and Diagnostics (AFDD) for HVAC systems, innovative approaches are needed to address limitations in data diversity and access to contextual information. This study introduces a methodology that leverages Building Information Modeling (BIM) to enhance the development of the AFDD model. Feature engineering techniques are utilized
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Effect of forced ventilation strategy on the thermal performance of finned-Trombe wall J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Shuang-Ying Wu, Hao Zheng, Lan Xiao
Compared with the natural ventilation (NV) strategy, the forced ventilation (FV) strategy has inherent characteristics. However, the research on the effect of FV strategy on the thermal performance of finned-Trombe wall (F-TW) is still lacking so far. To fill this gap, in this study, a 3D numerical model that only takes into account heat loss through the glass cover was created to evaluate the impacts
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Relative thermal pleasure model: A unified framework for understanding and predicting thermal comfort in dynamic environments J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Haijiao Cui, Yuxin Wu, Yingdong He, Nianping Li, Baizhan Li, Yu Gao, Angchen Jiang
Thermal comfort within dynamic environments is shaped by a combination of factors including thermal adaptation levels, short-term thermal histories, thermal expectations, and non-thermal stimuli. However, existing thermal comfort models have fallen short in providing a unified theoretical framework capable of elucidating the combined impact of these factors on thermal comfort. Here, we introduce the
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Efficiency assessment of variable speed air source heat pump heating systems: A hybrid data-driven and theoretical approach J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Hao Li, Zhaowei Xu, Qiang Yang, Zhichao Wang, Shuangquan Shao, Ce Xu, Yingxia Yang, Jiandong Li
The laboratory performance evaluations of variable speed air source heat pumps typically adhere to standard steady-state test methods, which neglect the dynamic characteristics associated with actual operation. The evaluation of energy efficiency influencing factors in the actual installed project is crucial for guiding improvements in energy efficiency. The aim of this paper is to identify any loss
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Enhancement of strength and water resistance of macro-defect free (MDF) gypsum modified by pregelatinized starch and hydrogen silicone oil J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Qingyuan Xu, Jingchen Wang, Yuhan Wang, Bao Lu, Zheyu Zhu, Huajun Zhu, Linan Gu
Gypsum, as a building material with renewable and environmentally friendly characteristics, is severely limited due to its poor mechanical properties and water resistance. Here, this paper investigates pregelatinized starch and hydrogen silicon oil modified macro-defect free (MDF) gypsum composite prepared by pressing. The compressive strength, water absorption, and softening coefficients of foamed
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Modeling and optimization method for building energy performance in the design stage J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Cong Li, Youming Chen
Building energy consumption is responsible for 30%–40% of the total society's energy consumption. There is great energy-saving potential in the building design stage. Good building designs can substantially reduce energy consumption in the long term. This study introduces a data-driven, modeling and optimization method for building energy performance in the design stage. The method has four steps:
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Performance improvement of vapor compression heat pump with superhydrophobic finned-tube evaporator J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Ran Li, Zanshe Wang, Yang Zhang, Zhang Li, Xiaowei Luo, Weizhen Lu, Zhaolin Gu
Residential buildings frequently employ vapor compression heat pump for winter heating. Its advantages over electric and coal-fired heating include great energy effectiveness and low emissions. However, the outside evaporator's frosting negatively impacts the performance of heat pump systems in low-temperature and high-humidity environments. To ameliorate the frosting problem, a finned-tube heat exchanger
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Influence of building thermal envelope modeling parameters on results of building energy simulation J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Simon Muhič, Dimitrije Manić, Ante Čikić, Mirko Komatina
The paper investigates the influence of input values for building energy model parameters on simulation results. The methodology is based on dynamic simulations in TRNSYS software, including models for three different buildings, with variations in different parameters such as referent dimensions, infiltration, envelope thermophysical properties, and thermal capacitance of interior space. The method
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Self-cleaning ability of gypsum-cement-pozzolan binders based on thermally processed red gypsum waste of titanium oxide manufacture J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Konstantinos Sotiriadis, Polina I. Kiyko, Tamara N. Chernykh, Mikhail V. Kriushin
A recycling solution for landfilled red gypsum waste originating from titanium oxide manufacture (sulfate method), is proposed. The waste consisted mainly of gypsum, goethite, and free titanium oxide as indicated by thermal and x-ray diffraction analyses, and scanning electron microscopy. Photocatalytically active beta gypsum, with physical properties typical for building gypsum, was obtained by thermal
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Single drone-based 3D reconstruction approach to improve public engagement in conservation of heritage buildings: A case of Hakka Tulou J. Build. Eng. (IF 6.4) Pub Date : 2024-03-08 Qingxiang Li, Guidong Yang, Chuanxiang Gao, Yijun Huang, Jihan Zhang, Dongyue Huang, Benyun Zhao, Xi Chen, Ben M. Chen
Public engagement in protecting architectural heritage is a critical component of sustainable development. This study has developed an innovative single drone-based 3D reconstruction (SD-3DR) approach for public-involved architectural heritage conservation. A new software tool named after CU-Recon is also developed to enable easy access and efficient 3D reconstruction using drone photography. Unlike