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Evaluation of the thermal stability of metakaolin-based geopolymers according to Si/Al ratio and sodium activator Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-26 Gyeongryul Kim, Seongmin Cho, Sumin Im, Jin Yoon, Heongwon Suh, Manabu Kanematsu, Akihiko Machida, Takahisa Shobu, Sungchul Bae
The thermal stability of geopolymer pastes with different Si/Al ratios (1.5–3.0) and sodium activators (NaSiO and/or NaOH) were evaluated in this study. The inclusion of NaSiO induced an active geopolymer reaction, enhancing pre-heating compressive strength, but gradually reduced from 300 °C due to vapor pressure and microstructural deterioration caused by entrapped physically bound water. Conversely
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Component‐level point cloud completion of bridge structures using deep learning Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-26 Gen Matono, Mayuko Nishio
Point cloud of existing bridges provides important applications in their maintenance and management, such as to the three‐dimensional (3D) model creation. However, point cloud data acquired in actual bridges are caused missing parts due to occlusions and limitations in sensor placements. This study proposes a learning method to realize the point cloud completion of such structure: the component‐wise
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Aggregation formulation for on‐site multidepot vehicle scheduling scenario Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-26 Yi Gao, Yuanjie Tang, Rengkui Liu
The multidepot vehicle scheduling problem (MDVSP) is a fundamental public transport challenge. To address the large‐scale model and inherent solution symmetry associated with the traditional trip‐to‐trip connection‐based approach for MDVSP, a new trip‐to‐route (T2R) connection‐based approach is proposed. Considering real‐world problem characteristics with numerous trips sharing common origin–destination
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Rapid pedestrian‐level wind field prediction for early‐stage design using Pareto‐optimized convolutional neural networks Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-26 Alfredo Vicente Clemente, Knut Erik Teigen Giljarhus, Luca Oggiano, Massimiliano Ruocco
Traditional computational fluid dynamics (CFD) methods used for wind field prediction can be time‐consuming, limiting architectural creativity in the early‐stage design process. Deep learning models have the potential to significantly speed up wind field prediction. This work introduces a convolutional neural network (CNN) approach based on the U‐Net architecture, to rapidly predict wind in simplified
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Lightweight object detection network for multi‐damage recognition of concrete bridges in complex environments Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-26 Tianyong Jiang, Lingyun Li, Bijan Samali, Yang Yu, Ke Huang, Wanli Yan, Lei Wang
To solve the challenges of low recognition accuracy, slow speed, and weak generalization ability inherent in traditional methods for multi‐damage recognition of concrete bridges, this paper proposed an efficient lightweight damage recognition model, constructed by improving the you only look once v4 (YOLOv4) with MobileNetv3 and fused inverted residual blocks, named YOLOMF. First, a novel lightweight
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Multistage charging facility planning on the expressway coordinated with the power structure transformation Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-25 Tian‐yu Zhang, En‐jian Yao, Yang Yang, Hong‐Ming Yang, Dong‐bo Guo, David Z. W. Wang
This study presents a novel multistage expressway fast charging station (EFCS) planning problem coordinated with the dynamic regional power structure (PS) transformation. Under the prerequisite of the EFCS network's sustainable operation, network accessibility, and orderly construction, a three‐step planning method oriented to the enhancement of energy saving and emission reduction (ESER) benefits
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Enhancing carbonation and thermal insulation of reactive magnesium oxide cement (RMC)-based 3D printable pastes with cenospheres Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-24 Xiangyu Wang, Padmaja Krishnan, Kemal Celik
Reactive magnesium oxide cement (RMC) has been proposed as a sustainable alternative to ordinary Portland cement (OPC) due to its lower production temperature and ability to permanently sequester carbon dioxide (CO) through carbonation. However, mixtures with only RMC can have significantly reduced CO absorption capacity due to limited CO diffusion, thereby compromising the performance of RMCs. This
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Production of vaterite via wet carbonation of carbide residue: Enhancing cement properties and CO2 sequestration Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-24 Yeqiang Zhou, Fengshun Wu, Lei Jinag, Bao Lu, Guihua Hou, Jianping Zhu
The influence of limestone powder (primarily composed of calcite) on hydration and properties of concrete has been extensively researched. However, there is limited understanding of how different calcium carbonate (CC) polymorphs affect cement hydration due to the difficulty in formation of vaterite. Therefore, preparing calcite and vaterite from solid waste carbide residue (CS) by wet carbonation
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Effect of steel fibre with different orientations on mechanical properties of 3D-printed steel-fibre reinforced concrete: Mesoscale finite element analysis Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-24 Yekai Yang, Pengyuan Lu, Zhongxian Liu, Liang Dong, Jianjun Lin, Ting Yang, Quanchang Ren, Chengqing Wu
It is widely recognized that steel fibres exhibit directional distribution during the preparation of 3D-printed steel fibre reinforced concrete (SFRC). The degree of fibre orientation varies due to several factors, such as nozzle size and layer height. This variation in fibre orientation range may result in different mechanical performance exhibited by 3D-printed SFRC at hardened state. To explore
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Reactive UAV-based automatic tunnel surface defect inspection with a field test Autom. Constr. (IF 10.3) Pub Date : 2024-04-24 Ran Zhang, Guangbo Hao, Kong Zhang, Zili Li
This work addresses the problem of automatic tunnel surface defect inspection using unmanned aerial vehicles (UAVs). The research aims at proposing a robust and efficient monitoring method for image data acquisition and processing in complex and dark tunnel environments. A method, called Proximity Move-Pause-Photo for Surface Defect Inspection (PMPP-SDI), is proposed by combining reactive flying control
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An intelligent optimization method for the facility environment on rural roads Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-24 Weixi Ren, Bo Yu, Yuren Chen, Kun Gao, Shan Bao, Zhixuan Wang, Yuting Qin
This study develops an intelligent optimization method of the facility environment (i.e., road facilities and surrounding landscapes) from drivers’ visual perception to adjust operation speeds on rural roads. Different from previous methods that heavily rely on expert experience and are time‐consuming, this method can rapidly generate optimized visual images of the facility environment and promptly
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Virtual trial assembly of large steel members with bolted connections based on multiscale point cloud fusion Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-24 Zeyu Zhang, Dong Liang, Haibin Huang, Lu Sun
Virtual trial assembly (VTA) using 3D laser scanning as the digital carrier can overcome the shortcomings of time‐consuming and costly physical preassembly. However, its application in large steel structures with bolted connections remains limited. First, this study introduces a novel approach for acquiring multiscale point cloud data of large steel members using terrestrial laser scanners (TLSs) and
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Fundamental effects of using power ultrasound to accelerate C3S hydration Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-23 Ricardo Remus, Christiane Rößler, Simone Peters, Thomas Sowoidnich, Horst-Michael Ludwig
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Alkali-activated blast furnace ferronickel slag for Cr immobilization Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-23 Dengquan Wang, Bin Ma, Lang Pang, Qiang Wang
Efficiently managing and utilizing Cr-containing slags and wastes is a global urgency. Alkali-activated materials offer a sustainable and cost-effective solution. This study investigated eco-friendly alkali-activated blast furnace ferronickel slag (AA-BFFS) for both self-stabilization/solidification (SS) of Cr-containing BFFS and immobilization of external Cr ions. Our investigation involved comprehensive
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TBM tunneling strata automatic identification and working conditions decision support Autom. Constr. (IF 10.3) Pub Date : 2024-04-23 Kang Fu, Daohong Qiu, Yiguo Xue, Tao Shao, Gonghao Lan
It has become an important research topic to ensure the safe and efficient tunnel boring machine (TBM) tunneling in the construction of long distance and deep buried tunnels. This study aims to construct an assistant decision support system that integrates surrounding rock classification identification and tunneling parameters prediction optimization, providing quantitative decision guidance for driving
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Design of curvilinear sections in vertical alignment of roads and railways using general transition curves Autom. Constr. (IF 10.3) Pub Date : 2024-04-23 Andrzej Kobryń
Creation of road and railway routes in general and also design of vertical alignment in particular constitute an significant engineering problem. The vertical alignment of roads, and especially of railways, is of great importance for passenger comfort under high-speed driving conditions. This requires alignment smoothness to a greater extent. In practice, the dominant tendency is to consider vertical
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Effect of three-dimensional space on progressive collapse resistance of reinforced concrete frames under various column removal scenarios J. Build. Eng. (IF 6.4) Pub Date : 2024-04-22 Fei-Fan Feng, Hyeon-Jong Hwang, Yun Zhou, Jing-Ming Sun, Hu-Zhi Zhang, Jun-Ho Roh, Su-Min Kang, Wei-Jian Yi
In this study, high fidelity finite element (FE) model was adopted to investigate the progressive collapse resistance of reinforced concrete (RC) frame structures under various column removal scenarios. The validity of the numerical model was verified by comparing with the existing experimental results. Afterwards, to facilitate the research on possible simplified boundary conditions served for further
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Development of ReShadS, a climate-responsive shading system: Conception, design, fabrication, and small-scale testing J. Build. Eng. (IF 6.4) Pub Date : 2024-04-22 Gabriel de Bem, Eduardo Krüger, Pablo La Roche, Alexandre A.A.M. de Abreu, Lina Luu
Integrating computational technologies to produce dynamic and intelligent architecture that can enhance building thermal performance and meet users' requirements and routines is broadly classified as responsive architecture. This seems to be a viable solution for façades, reducing energy demand during the building operational phase. However, scientific content regarding responsive components' fabrication
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Impact of aluminate cements on the durability and mechanical performance of strain-hardening cementitious composites J. Build. Eng. (IF 6.4) Pub Date : 2024-04-22 Chung-Chan Hung, Anggun Tri Atmajayanti, Valentine Chronica Domaria Meiji, Terry YP. Yuen, Doo-Yeol Yoo
Strain-hardening cementitious composites (SHCCs) are durable, ductile, fiber-reinforced cement-based materials. While fly ash (FA) is often used to partially replace Portland cement in SHCCs to enhance material performance, it can lead to long setting times and slow strength development. To address these limitations, this study investigates the use of aluminate cement as partial replacements for Portland
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Transformer‐based framework for accurate segmentation of high‐resolution images in structural health monitoring Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-21 M. Azimi, T. Y. Yang
High‐resolution image segmentation is essential in structural health monitoring (SHM), enabling accurate detection and quantification of structural components and damages. However, conventional convolutional neural network‐based segmentation methods face limitations in real‐world deployment, particularly when handling high‐resolution images producing low‐resolution outputs. This study introduces a
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Research on concrete early shrinkage characteristics based on machine learning algorithms for multi-objective optimization J. Build. Eng. (IF 6.4) Pub Date : 2024-04-21 Jianqun Wang, Heng Liu, Junbo Sun, Bo Huang, Yufei Wang, Hongyu Zhao, Mohamed Saafi, Xiangyu Wang
Cracking phenomena in tunnel side wall structures (TSWS) increasingly jeopardize their longevity due to water leakage, reinforcement corrosion, and eventual collapse. The primary contributor, early-age shrinkage (EAS) induced by hydration reactions, significantly undermines structural stability and durability. The integration of expansion agents (EA) and fibers presents a low-cost, efficient strategy
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Exploring the nonlinear behavior of flow through cracked concrete by water permeability test Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-20 Sailong Hou, Kai Li, Xiang Hu, Caijun Shi
This study investigates the nonlinear behavior of flow passing through 28 crack topographies in concrete at various pressure gradients using water permeability test. Artificial cracks were generated and quantified by point-cloud matching technique. Results indicate Darcy's law becomes biased for calculating an apparent transmissivity of cracked concrete at a high Reynolds number. As an alternative
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Effects of mixing conditions and activator anionic species on the rheology of silicate-activated slag concrete Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-20 Yubo Sun, Manu K. Mohan, Xiaodi Dai, Yiyuan Zhang, Guang Ye, Geert De Schutter
The proper control of the rheological performance of silicate-based alkali-activated slag (AAS) mixtures is problematic, as the conventional superplasticizers become less effective in alkaline media. Nevertheless, several methods have been proposed to improve the workability of silicate-activated AAS, such as by extending the mixing time, and replacing sodium silicate with sodium carbonate activators
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Flexural fatigue behavior of ultra-high performance concrete under low temperatures Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-20 Xin Tian, Zhi Fang, Shaokun Liu, Yu Xiang, Qimu Zhu, Yi Shao
Ultra-high performance concrete (UHPC) shows superior mechanical performance, which leads to increasing applications in infrastructure constructions that are subjected to different loading (i.e., flexure, tension, compression, etc.) and environmental conditions (ambient, freeze, etc.). Among them, the flexural performance of UHPC under low temperatures (i.e., sub-zero temperature) is still little understood
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A unified tensile constitutive model for mono/hybrid fibre-reinforced ultra-high-performance concrete (UHPC) Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-20 Shack Yee Hiew, Keat Bin Teoh, Sudharshan N. Raman, Chung-Chan Hung, Ya Xuan Chaen, Daniel Kong, Milad Hafezolghorani
Providing a representative and reliable tensile constitutive model for ultra-high-performance concrete (UHPC) has been challenging in the past due to the absence of standardised test methods. In this paper, the authors have proposed a unified constitutive model calibrated to the most commonly used types of steel fibres within the practical range of fibre content. While the novel model serves as the
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Utilization of waste foam concrete with MPCM as a substitution material for cement in mortars J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Barbara Klemczak, Jacek Gołaszewski, Grzegorz Cygan, Małgorzata Gołaszewska, Henk Jonkers, Dmitry Zhilyaev, Eduardus A.B. Koenders
Given the rising popularity of foam concrete (FC) for both structural and insulating purposes, evaluating the feasibility of recycling after its lifespan is crucial in the context of the growing emphasis on sustainable building practices. One approach to recycling FC incorporating microencapsulated phase change material (MPCM) involves utilizing recycled foam concrete powder (RFCP) as an additive in
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Hierarchical-stochastic model predictive control for a grid-interactive multi-zone residential building with distributed energy resources J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Felix Langner, Moritz Frahm, Weimin Wang, Jörg Matthes, Veit Hagenmeyer
Using Model Predictive Control (MPC) is a promising method for enabling grid-interactive efficient buildings. Since MPC relies on a building model and the forecasts of external disturbances to derive optimal inputs, the uncertainties due to forecast errors and model inaccuracies can deteriorate the control performance. Most existing MPC studies for the built environment are deterministic MPC without
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Optimizing HVAC systems for semiconductor fabrication: A data-intensive framework for energy efficiency and sustainability J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Hsiao-Ping Ni, Wai Oswald Chong, Jui-Sheng Chou
This paper presents a detailed comparative analysis of the performance and energy consumption of heating, ventilation, and air conditioning (HVAC) systems as standalone units and integrated systems, specifically focusing on semiconductor manufacturing facilities (SMFs). Highlighting the urgent need for HVAC system optimization to minimize energy waste and reduce greenhouse gas emissions, the study
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Prefabricated concrete sandwich and other lightweight wall panels for sustainable building construction: State-of-the-art review J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Tilak Prasad Sah, Andrew William Lacey, Hong Hao, Wensu Chen
Prefabricated (or prefab) construction has become popular in recent years worldwide, owing to its advantages, including speed of construction, less wastage of materials, reduced labour demand, fabrication in a quality-controlled environment, and so on. Moreover, the current focus is on developing energy-efficient and sustainable buildings to reduce carbon emissions. To achieve this, prefab external
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Experimental study on preparation and performance of the Corn Straw Fiber (CSF) reinforced EPS concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Zheng Wu, Xiuli Wang, Zhihua Chen
With the full factor experimental design method carried out, 20 sets of EPS concrete specimens with different mass fractions of Corn Straw Fiber (CSF) and Expanded-Polystyrene (EPS) particles were designed to study their density, water absorption, compressive strength, flexural strength, splitting tensile strength, mass loss and strength loss after freeze-thaw cycles, and changes in thermal conductivity
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Evaluating the impact of virtual energy storage under air conditioning and building coupling on the performance of a grid-connected distributed energy system J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Baohong Jin, Zhichao Liu
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Vibration transmission model of buildings based on virtual spring model and energy functional variation principle J. Build. Eng. (IF 6.4) Pub Date : 2024-04-20 Yanming Chen, Qingsong Feng, Qingjie Liu
In recent years, the “metro depot + over-track buildings” development model has witnessed rapid growth in China, driven by its advantages of high land utilization and investment return rate. However, the issue of vibration and noise caused by trains entering and exiting the depot has become a major impediment to its sustainable development. To predict the vibration of over-track buildings induced by
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Colloidal nanosilica promotes high-density calcium-silicate-hydrates in fine recycled concrete aggregate mortar Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-19 Nathanial Buettner, Gass Iyacu, Ange-Therese Akono
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Effect of particle size on cement foams Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-19 Qiang Zeng, Shan Chen, Rongjia Wen, Yu Peng, Zhendi Wang, Yang Zhao
This work attempts to elucidate the foaming kinetics, hierarchical structures, engineering properties and mechanisms of cement foams with high-volume quartz powder (QP) of different fineness from 200 to 2000 meshes. Comprehensive experiments were conducted to measure the fresh slurry properties, foaming process, penetration strength, and structure of the foams and skeletons. Foaming kinetics was analyzed
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Environmental performance analysis of textile envelope integrated flexible photovoltaic using life cycle assessment approach J. Build. Eng. (IF 6.4) Pub Date : 2024-04-19 Qingxiang Li, Carol Monticelli, Alara Kutlu, Alessandra Zanelli
The textile envelope integrated flexible photovoltaic (TE-FPV) system is an emerging technology to promote building sustainability due to its lightweight structure, textile recovery easily, and renewable energy production. We develop six novel TE-FPV prototypes to determine their advantages of environmental performance. Especially, the systems with the solar cells directly printed on the textile are
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An innovative intelligent design method of alkali-activated foamed geopolymer: Mixture optimization and performance prediction J. Build. Eng. (IF 6.4) Pub Date : 2024-04-19 Yue Li, Jiale Shen, Hui Lin
The complex design parameters and lack of standard mix design methods generate a difficulty in the high efficiently preparation of alkali-activated foamed geopolymer (AAFG). Therefore, this paper proposes an innovative intelligent design method of AAFG based on machine learning (ML) and Metaheuristic Optimization Algorithms (MOA). The effects of twelve factors on drying density (DD) and compressive
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Shaking table tests on inclined collapse mechanism of RC frame structures subjected to earthquakes J. Build. Eng. (IF 6.4) Pub Date : 2024-04-19 Zhe Xu, Feng Lin, Xiang-Lin Gu
Inclined collapse of structures under strong earthquakes threatens the adjacent infrastructures. The collapse mode and collapse direction should be considered with caution to curb the secondary disaster in the urban area. However, current studies on the inclined collapse mechanism are predominantly limited to the qualitative and intuitive understanding. To fill this gap, this study presents an insight
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Piezoresistive performance of cement-based composites with two-dimensional MXene subjected to various loading conditions and water content Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-18 Zhengxiang Lin, Xiaodan Tang, Weizhun Jin, Xinyi Zhao, Jinghui Zhang, Hongqiang Chu, Linhua Jiang
Two-dimension MXene was applied in cement to fabricate MXene cement-based sensor used in structural health monitoring. The effect of MXene content on the piezoresistive performance of MXene cement-based composites (MCBC) was investigated. The fractional change in resistivity () under different loading rate, water content and failure load were also measured. Microanalysis results proves that MXene can
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Effects of sodium aluminate on fleeting semi-dry carbonation and properties of steel slag powders in low concentration CO2 atmosphere Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-18 Shuo Yang, Liwu Mo, Duyou Lu
Accelerated carbonation suffers from the limitation of low efficiency when CO supply is inadequate. This study aims at proposing a carbonation accelerator of sodium aluminate (SA) to stimulate the reaction between steel slag and CO. Additionally, a fleeting semi-dry carbonation is proposed and mixed gas with 20 vol% CO was used to simulate the CO concentration of flue gas. According to the MGC results
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Construction metaverse: Application framework and adoption barriers Autom. Constr. (IF 10.3) Pub Date : 2024-04-18 Zhen-Song Chen, Jun-Yang Chen, Yue-Hua Chen, Witold Pedrycz
This paper addresses the limited research on the metaverse's application in the construction industry. It aims to investigate how the metaverse can empower construction, identify adoption barriers, and determine the most significant barriers. We propose a novel application framework of construction metaverse based on cyber-physical-social systems, identify 17 barriers using the political-economic-
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High-resolution infrastructure defect detection dataset sourced by unmanned systems and validated with deep learning Autom. Constr. (IF 10.3) Pub Date : 2024-04-18 Benyun Zhao, Xunkuai Zhou, Guidong Yang, Junjie Wen, Jihan Zhang, Jia Dou, Guang Li, Xi Chen, Ben M. Chen
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Performance comparison of linear and nonlinear compliant liquid dampers-inerter in controlling across-wind response of benchmark tall building J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Anupam Das, Arnab Banerjee, Dipti Ranjan Sahoo, Vasant Matsagar
The potential of compliant liquid dampers-inerter (CLDI) for response control of tall buildings, capitalizing on the mass amplification property of the inerter, has been explored. However, the influence of the compliance connection on the damper displacement, energy dissipation, and inerter force is never addressed. The present work introduces a nonlinear compliant liquid damper-inerter (NCLDI), in
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Self-healing of macroscopic cracks in concrete by cellulose fiber carried microbes J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Emmanuel Igbokwe, Samuel Ibekwe, Patrick Mensah, Ogad Agu, Guoqiang Li
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Physico-mechanical, thermal insulation properties, and microstructure of geopolymer foam concrete containing sawdust ash and egg shell J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Mohamed Abdellatief, Yasser M. Ahmed, Mohamed Taman, Ezzat Elfadaly, Yunchao Tang, Aref A. Abadel
Recently, energy conservation through building thermal insulation has gained significant importance in solving sustainability-related issues. In this context, this study investigates the potential for manufacturing geopolymer foam concrete (GFC) containing eggshell powder (ESP) and sawdust ash (SDA) using aluminium (Al) powder as a foaming agent. The role of Al-powder percentages on the mechanical
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Performance assessment of blended self-compacting concrete with ferrochrome slag as fine aggregate using functional ANOVA J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Elizabeth Sherly George, Rahesh Hari, Mini K. Madhavan
The current study explored the feasibility of re-use of ferrochrome slag (FS), a waste byproduct from the ferrochrome industry as a replacement to fine aggregate in self-compacting concrete (SCC) with cement and fly ash as binders. The study investigated the mechanical and durability characteristics of SCC of M25 grade, incorporating FS in lieu of fine aggregate, up to 60 % replacement levels. Albeit
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Behavior of ultra-high-performance concrete under combined tensile and bending action J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Zilong Tang, Zhi Fang, Fei Peng, Haoqin Luo, Xinhua Liu, Qi Liu
This paper attempts to investigate the mechanical behavior of ultra-high-performance concrete (UHPC) under combined tensile and bending action. For this purpose, a total of 72 specimens were tested under axial tension, pure bending, and eccentric tension loads, respectively. The test parameters included the steel fiber content (0 %, 1 %, 2 %, and 3 %) and eccentricity ratio (0, 0.1, 0.2, 0.4, 0.8,
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Dynamic compressive properties of UHPC under one-dimensional stress wave: The influence of steel fiber morphology and curing regime J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Mingzhe Li, Jize Mao, Lei Li, Junlei Wang, Lingqi Meng, Chunxiao Zhang
The low matrix strength and insufficient toughness of conventional concrete structures seriously threaten the service performance when subjected to intensive compressive waves. This study aims to comprehensively investigate the impact of steel fiber morphology and curing regime on the dynamic compressive properties of Ultra-high performance concrete (UHPC) under one-dimensional stress wave. Seeking
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Influence of pore property and alkalinity on the bio-deposition treatment efficiency of recycled aggregates J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Jianyun Wang, Rui Zhang, Fuxing Hou, Guang Ye
Microbial induced calcium carbonate precipitation (MICP) technology has been successfully used to enhance the properties of recycled concrete aggregates. However, the complex source and varied physical and chemical properties of recycled aggregates may have influence on the modification efficiency since microbes are often sensitive to the surroundings. In this study, two representative types of recycled
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Lateral behavior of wood frame shear wall using PVC wood-plastic composite (WPC) veneer panels J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Zixuan He, Hai Fang, Xincheng Zhang, Chunyan Shen
With the growing awareness of environmental protection and green ecology, there has been significant attention on the utilization of new energy-saving and environmentally friendly materials in building structures. This article proposes a novel structure for PVC wood-plastic composite wall panels. The structure comprises Polyvinyl Chloride (PVC) wood-plastic composite materials as the facing panel and
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Passivation of cold-sprayed zinc-coated steel bars in simulated concrete pore solution J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Liang Fan, Peng Li, Wei Shen, Baoyin Sun
Hot-dip galvanized coating is proved to be effective in preventing chloride ion induced corrosion on steel bars, however, highly-toxic substances generated during the plating process seriously pollute the surrounding environment. Cold-sprayed zinc as an environment-friendly technology is an alternative to the hot-dip galvanized technology, but it has not been applied to steel bars in the alkaline environment
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A review on enhancing energy efficiency and adaptability through system integration for smart buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Um-e-Habiba, Ijaz Ahmed, Muhammad Asif, Hassan Haes Alhelou, Muhammad Khalid
The increasing need for reducing carbon emissions and promoting smart, energy-saving buildings is fueling the rising trend of sophisticated control systems. This study provides comprehensive evaluations of advanced controls specifically designed for such buildings. The topics covered are diverse, encompassing big data, data collection, automation in construction, digitalization of energy, and modeling
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Axial compression behavior of concrete-filled prefabricated aligned steel fiber UHPC tubes J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Yongming Xiong, Ming Yang, Heng Shi, Jiankai Zhao, Yan Yuan, Xiaoyue Guo
This study presents an innovative composite column system featuring exceptional ductility and versatility, suitable for replacing traditional concrete columns or UHPC composite columns. The composite column, comprised of concrete-filled aligned steel fiber ultra-high performance concrete (UHPC) tubes (ASFUTs), offers superior mechanical properties. Apart from its function as a formwork, the ASFUT provides
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Mechanical properties of multi-recycled coarse aggregate concrete, with particular emphasis on experimental and numerical assessment of shrinkage at different curing temperatures J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Oualid Belabbas, Farid Bouziadi, Bensaid Boulekbache, Mostefa Hamrat, Abdelkader Haddi, Sofiane Amziane
This study investigates the behaviour of concrete manufactured with recycled coarse aggregate (RCA) derived from multiple recycling cycles, with a particular emphasis on experimental and numerical assessment of shrinkage at different curing temperatures (20, 40, and 60 °C). Four types of concretes have been produced: a natural aggregate concrete (NAC) with 100 % natural coarse aggregate (NCA) and three
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Investigation on laminated steel slit shear walls with low yield steel J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Yangchao Ru, Liusheng He
To improve the energy dissipation capacity of steel slit shear walls made of thin plates and mitigate the adverse effects from the large out-of-plane deformation and potential local buckling failure, a novel laminated steel slit (LSS) shear wall assembled from two single-layer steel slit (SSS) shear walls is proposed in this study. First, the theoretical analysis method for predicting the shear strength
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Development and performance evaluation of a novel anti-friction agent for H-beam extraction in soil mixing walls J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Yanchao Liu, Feng Huang, Yanhui Cao, Guihe Wang, Ji Huang, Wei Hou
This study focuses on the development and assessment of an innovative anti-friction agent designed to reduce the extraction force required for H-beams in Soil Mixing Walls (SMW). The composition of the new formula for the anti-friction agent was determined using orthogonal experimental methods: vaseline (25 g), paraffin (300 g), rosin (65 g), polytetrafluoroethylene powder (9.75 g), ZDDP (10 g), benzoic
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Comparative fracture properties of ambient-cured geopolymer concrete containing four different fibers in mono and hybrid combinations using digital image correlation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Hongen Zhang, Prabir Kumar Sarker, Qingyuan Wang, Bei He, Zhengwu Jiang
This paper presents an investigation on the effects of four different fibers (polypropylene (PP), polyvinyl alcohol (PVA), recycled polypropylene (RPP), and steel (S) fibers) on the fracture behaviour of ambient-cured fly ash geopolymer concrete (GPC). The four fibers were added into GPC by both mono at 1.0% volume and hybrid combinations with steel fiber at 0.5% of each other type of fiber. The full-field
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The influence of secondary aluminum ash sintering and grinding fine powder on the mechanical properties and shrinkage characteristics of Portland cement matrix J. Build. Eng. (IF 6.4) Pub Date : 2024-04-18 Zheyang Ma, Hongrui Ma, Mingfang Ba, Siyi Fang, Yang Wang
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Fast vapour migration next to a depressurizing interface: A possible driving mechanism of explosive spalling revealed by neutron imaging Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-17 Roberto Felicetti, Ramin Yarmohammadian, Stefano Dal Pont, Alessandro Tengattini
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Sustainability and building information modelling: Integration, research gaps, and future directions Autom. Constr. (IF 10.3) Pub Date : 2024-04-17 Saeed Akbari, Moslem Sheikhkhoshkar, Farzad Pour Rahimian, Hind Bril El Haouzi, Mina Najafi, Saeed Talebi
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Material augmented semantic segmentation of point clouds for building elements Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-17 Houhao Liang, Justin K. W. Yeoh, David K. H. Chua
Point clouds are utilized to enable automated engineering applications for their ability to represent spatial geometry. However, they inherently lack detailed surface textures, posing challenges in differentiating objects at the texture level. Hence, this study introduces a 2D–3D fusing approach, leveraging material properties recognized from registered images as an augmented feature to enhance deep