-
An efficient Bayesian method with intrusive homotopy surrogate model for stochastic model updating Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-16 Hui Chen, Bin Huang, Heng Zhang, Kaiyi Xue, Ming Sun, Zhifeng Wu
This paper proposes a new stochastic model updating method based on the homotopy surrogate model (HSM) and Bayesian sampling. As a novel intrusive surrogate model, the HSM is established by the homotopy stochastic finite element (FE) method. Then combining the advanced delayed‐rejection adaptive Metropolis–Hastings sampling technology with HSM, the structural FE model can be updated by uncertain measurement
-
Integrated corridor management by cooperative traffic signal and ramp metering control Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-16 Abdullah Al Farabi, Rasool Mohebifard, Ramin Niroumand, Ali Hajbabaie, Mohammed Hadi, Lily Elefteriadou
This paper formulates a cooperative traffic control methodology that integrates traffic signal timing and ramp metering decisions into an optimization model to improve traffic operations in a corridor network. A mixed integer linear model is formulated and is solved in real time within a model predictive controller framework, where the cell transmission model is used as the system state predictor.
-
Traffic prediction via clustering and deep transfer learning with limited data Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-15 Xiexin Zou, Edward Chung
This paper proposes a method based on the clustering algorithm, deep learning, and transfer learning (TL) for short‐term traffic prediction with limited data. To address the challenges posed by limited data and the complex and diverse traffic patterns observed in traffic networks, we propose a profile model based on few‐shot learning to extract each detector's unique profiles. These profiles are then
-
A lightweight Transformer‐based neural network for large‐scale masonry arch bridge point cloud segmentation Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-15 Yixiong Jing, Brian Sheil, Sinan Acikgoz
Transformer architecture based on the attention mechanism achieves impressive results in natural language processing (NLP) tasks. This paper transfers the successful experience to a 3D point cloud segmentation task. Inspired by newly proposed 3D Transformer neural networks, this paper introduces a new Transformer‐based module, which is called Local Geo‐Transformer. To alleviate the heavy memory consumption
-
Data‐driven out‐of‐order model for synchronized planning, scheduling, and execution in modular construction fit‐out management Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-12 Yishuo Jiang, Mingxing Li, Benedict Jun Ma, Ray Y. Zhong, George Q. Huang
Fit‐out operations in modular construction exhibit unique features, such as limited room space and diversly distributed operations in the building. These features pose significant challenges to planning, scheduling, and execution (PSE) of fit‐out activities due to operational parallelism, distributional diversity, and narrower constrained time window in modular construction. Hence, logistics‐operation
-
Multi-domain adaptive analysis of intelligent compaction measurement value for subgrade construction Autom. Constr. (IF 10.3) Pub Date : 2024-04-11 Xuefei Wang, Wei Lu, Jiale Li, Jianmin Zhang, Guowei Ma
Intelligent Compaction (IC) utilizes the Intelligent Compaction Measurement Value (ICMV) to assess compaction quality in real-time. However, current engineering practices rely on a fixed ICMV for evaluation, overlooking material variations and different compaction stages. The choice of ICMV is often dictated by the manufacturer, lacking rationality. This paper presents a multi-domain ICMV system to
-
Estimation of load for tunnel lining in elastic soil using physics‐informed neural network Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-11 G. Wang, Q. Fang, J. Wang, Q. M. Li, J. Y. Chen, Y. Liu
A reverse calculation method termed soil and lining physics‐informed neural network (SL‐PINN) is proposed for the estimation of load for tunnel lining in elastic soil based on radial displacement measurements of the tunnel lining. To achieve efficient and accurate calculations, the framework of SL‐PINN is specially designed to consider the respective displacement characteristics of surrounding soil
-
The effect of depth-dependent carbonation on the interfacial strength between GFRP reinforcement bar and reactive magnesia cementitious composites Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-10 Bo Wu, Peng Wang, Xianjun Su, Weiwen Li, Christopher K.Y. Leung, Jishen Qiu
Reactive magnesia cement (RMC) is an emerging class of low-alkaline and CO-sequestering binder, which can mitigate the deterioration of GFRP reinforcements induced by a high-alkaline environment, e.g., in Portland cement. This study investigated the slip behavior of GFRP rebar embedded in RMC composite, which varies with carbonation depth significantly. The variation of the interfacial bond was determined
-
Automatic deflection measurement for outdoor steel structure based on digital image correlation and three-stage multi-scale clustering algorithm Autom. Constr. (IF 10.3) Pub Date : 2024-04-10 Haobo Sun, Yongqi Huang
-
Smartphone‐based method for measuring maximum peak tensile and compressive strain Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-10 Xixian Chen, Huan Li, Chenhao Zhao, Guangyi Zhou, Weijie Li, Xue Zhang, Xuefeng Zhao
This paper proposes an innovative smartphone‐based strain sensing method (named MaxCpture) for measuring maximum peak tensile and compressive strains. The MaxCpture method is able to record the maximum peak strain of a structure without continuous power supply and real‐time monitoring. This method combines the maximum peak strain sensor, a smartphone, and the microimage sensing algorithm. Crucially
-
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
-
Intrinsic chloride ion transport behavior in porous space of pure C-S-H Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-09 Lianyao Xiong, Zhe Zhang, Yuchen Hu, Guoqing Geng
-
A kinetic Monte Carlo study of the C[formula omitted]S dissolution mechanism Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-09 Pablo Martin, Juan J. Gaitero, Xabier M. Aretxabaleta, Mohammad Javad Abdolhosseini Qomi, Hegoi Manzano
Understanding the mechanism that controls cement hydration and its stages is a long-standing challenge. Over a decade ago, the mineral dissolution theory was adopted from geochemistry to explain the hydration rate evolution of alite. The theory is not fully accepted by the community and deserves further investigation. In this work, we apply Kinetic Monte Carlo (KMC) simulations with the mineral dissolution
-
Critical strain measurements of hydrating Portland cement pastes: A new understanding of microstructure development Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-09 Palash Badjatya, Shiho Kawashima
Small amplitude oscillatory sweep (SAOS) techniques have been identified as valuable non-destructive methods to investigate the microstructure of cement pastes, but relatively few studies exist in the literature. Moreover, these studies focused primarily on the evolution of storage modulus over time, while change in the critical strain parameter has remained unexplored. In this investigation, an ordinary
-
Evaluation of novel copper-based antimicrobial admixtures for biocorrosion mitigation of cement paste Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-09 Weichao Ying, Hailong Ye
Copper-based antimicrobial admixtures have been favoured for mitigating microbially induced concrete corrosion (MICC) owing to their practical bactericidal abilities. However, concerns regarding the leachability of hazardous components and the long-term efficacy of these admixtures have hindered their industrial application, with limited understanding of their comparative antimicrobial performance
-
The industrial SO2-induced corrosion: Investigation of the corrosion onset Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-09 Jie Huang, Ditao Niu, Hongqu Wu, Yao Lv, Qiang Fu
The stability of the passivation film on reinforcing steel is significantly influenced by the internal chemical environment of concrete under industrial sulfur dioxide (SO) corrosion. This study aimed to investigate the electrochemical state of the reinforcing steel and the internal chemical environment (corrosion products, phase composition, and pore structure) of concrete by conducting indoor simulations
-
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
-
A new accelerated testing scheme to evaluate the potential oxidation reaction of sulfide-bearing aggregates in concrete specimens Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-08 R. Castillo Araiza, A. Rodrigues, B. Fournier, J. Duchesne
-
Understanding the rheological behavior of reactive magnesia-metakaolin system in the context of digital construction Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-08 Yiming Peng, Cise Unluer
Application of 3D printing in building projects can enhance construction efficiency and productivity. Rheological properties play a key role in defining the suitability of different cement-based mixes for digital construction. In this study, the rheological behavior of the MgO-SiO system involving metakaolin (MK) as the silica source was thoroughly investigated. Mixes with two different MgO/MK ratios
-
Context‐aware hand gesture interaction for human–robot collaboration in construction Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-08 Xin Wang, Dharmaraj Veeramani, Fei Dai, Zhenhua Zhu
Construction robots play a pivotal role in enabling intelligent processes within the construction industry. User‐friendly interfaces that facilitate efficient human–robot collaboration are essential for promoting robot adoption. However, most of the existing interfaces do not consider contextual information in the collaborative environment. The situation where humans and robots work together in the
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
BIM-based automated rule-checking in the AECO industry: Learning from semiconductor manufacturing Autom. Constr. (IF 10.3) Pub Date : 2024-04-06 Wawan Solihin, Ziwen Liu, Yujie Lu, Lai Wei
The Architecture, Engineering, Construction and Owner-operated (AECO) industry faces an array of productivity challenges, in part stemming from limited interoperability and suboptimal management of building information across project lifecycles. This paper investigates the application of rule-based systems from the manufacturing industry, especially as used in the semiconductor manufacturing sector
-
Impact of coarse aggregate morphology andseparation distance on concrete properties based on visual learning J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Wu Zheng, Zhonghe Shui, Zhengzhong Xu, Xu Gao, Kui Gao
The morphology of coarse aggregates plays a significant role in concrete performances. This study conducted a quantitative analysis on the morphology of coarse aggregates using visual learning technology, aiming to explore their effects on fluidity, rheology and mechanical properties of fresh concrete. The parameters of flatness, angularity, roughness, roundness, sphericity and coarse aggregate separation
-
Development of geopolymer-based lightweight high-strength concrete and properties at different temperatures J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Borui Wu, Yao Yao
In the current study, a green and high-strength lightweight concrete is developed. Geopolymer-based lightweight concrete (G-LWC) is an innovative green building material that combines the advantages of geopolymers and lightweight concrete. Building upon existing research, to achieve low density, a lightweight aggregate, expanded glass powder (EGP), is used, resulting in the development of geopolymer-based
-
Biochar-enhanced concrete mixes: Pioneering multi-objective optimization J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Yifei Chen, Zhenjie Zou, Xueli Jin, Junsong Wang, Kanghao Tan
The incorporation of biochar (BC) as a partial substitute for cement in concrete formulations provides a promising pathway for mitigating the environmental impacts associated with carbon dioxide emissions during cement production. To achieve optimal composition of BC-enhanced concrete, multiple objectives including mechanical strength, economic factors, and embodied CO must be balanced while considering
-
Incorporation of clay brick wastes and calcium hydroxide into geopolymers: Compressive strength, microstructure, and efflorescence J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Allan G. Borçato, Marisa Thiesen, Ronaldo A. Medeiros-Junior
This study aimed to evaluate the incorporation of clay brick waste (CBW) into geopolymers for the production of sustainable building materials. Eight mixtures were prepared with and without the incorporation of calcium hydroxide (CH) and with 0 %, 25 %, 50 %, and 75 % of the mass of metakaolin (MK) replaced by CBW. Physical-mechanical tests evaluated the macrostructural properties and scanning electron
-
Accelerated carbonation curing of concrete incorporating calcium carbide residue J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Jad Bawab, Hilal El-Hassan, Amr El-Dieb, Jamal Khatib
The synergic effect of accelerated carbonation curing and cement replacement by calcium carbide residue (CCR) on the carbon sequestration potential and performance of concrete was examined. The concrete mixes included 0, 5, 10, and 20 % (by mass) CCR as partial cement replacement and were subjected to different initial air curing durations (0, 4, and 20 h) and subsequent carbonation curing durations
-
Numerical simulation of 3D concrete printing derived from printer head and printing process J. Build. Eng. (IF 6.4) Pub Date : 2024-04-06 Ying Wei, Song Han, Ziwei Chen, Jianxin Lu, Ziang Li, Shiwei Yu, Wenbo Cheng, Mingzhe An, Peiyu Yan
-
Weaving the next-level structure of calcium silicate hydrate at the submicron scale via a remapping algorithm from coarse-grained to all-atom model Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-05 Ao Zhou, Juntao Kang, Renyuan Qin, Huali Hao, Tiejun Liu, Zechuan Yu
The submicron scale is a critical bridge connecting the nanoscale molecular dynamics simulations to the microscale mechanical experiments like nanoindentation. Here we present a modeling algorithm for submicron structure of calcium silicate hydrate (C-S-H). The algorithm remaps coarse-grained C-S-H models back to all-atom models through Voronoi analysis on packing of disk-like units. The obtained all-atom
-
-
AI‐enabled airport runway pavement distress detection using dashcam imagery Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-05 Arman Malekloo, Xiaoyue Cathy Liu, David Sacharny
Maintaining airport runways is crucial for safety and efficiency, yet traditional monitoring relies on manual inspections, prone to time consumption and inaccuracy. This study pioneers the utilization of low‐cost dashcam imagery for the detection and geolocation of airport runway pavement distresses, employing novel deep‐learning frameworks. A significant contribution of our work is the creation of
-
-
Shear strength prediction of interior RC column and steel beam composite joints using the modified softened strut-and-tie model J. Build. Eng. (IF 6.4) Pub Date : 2024-04-05 Liquan Xiong, Qiang Luo, Jian He, Longfei Cheng
Reinforced concrete and steel (RCS) composite frame systems typically consist of reinforced concrete (RC) columns and steel (S) beams. Such structures have the characteristics of large span, light self-weight, good fire resistance, fast construction speed, excellent lateral stiffness and seismic performance compared with the traditional concrete or steel frames. In this paper, the typical configuration
-
Damping dissipation analysis of damped outrigger tall buildings with inerter and negative stiffness considering soil-structure-interaction J. Build. Eng. (IF 6.4) Pub Date : 2024-04-05 Meng Wang, Chao Liu, Mi Zhao, Fei-Fei Sun, Satish Nagarajaiah, Xiu-Li Du
This paper analyzes the damping dissipation of damped outrigger tall buildings with inerter and negative stiffness considering soil-structure-interaction (SSI). A unified characteristic equation is established concerning different soil conditions and outrigger systems. By solving the unified characteristic equation, the multi-mode damping effect are parametrically investigated to evaluate the influence
-
Accelerated carbonation of recycled concrete aggregate in semi-wet environments: A promising technique for CO2 utilization Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-04 Yining Gao, Yi Jiang, Yong Tao, Peiliang Shen, Chi Sun Poon
The practical implementation of accelerated carbonation for recycled waste concrete is impeded by sluggish carbonation efficiency. In contrast to previous carbonation enhancement schemes using high-pressure gas and/or complex pre-/post-processing, this study introduces a novel semi-wet carbonation method that achieves high-efficiency carbonation of recycled concrete aggregates (RCA) in a practically
-
Computational multiscale modelling of thermally induced dehydration of blended hardened cement paste Cem. Concr. Res. (IF 11.4) Pub Date : 2024-04-04 Simon Peters, Günther Meschke
A multiscale model able to describe the dehydration behaviour in terms of mass loss, porosity increase and Young’s modulus degradation of blended cement pastes at elevated temperatures is proposed. The cement composition and the heating rate are the input of the model. Known stoichiometric chemical dehydration formulas and kinetics of each hardened cement constituent are used to predict the water release
-
Study on the deterioration of concrete performance in saline soil area under the combined effect of high low temperatures, chloride and sulfate salts Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-04 Daming Luo, Fan Li, Ditao Niu
Concrete structures in saline soil regions are prone to degradation due to chloride and sulfate erosion, compounded by the concurrent influences of drying, high and low temperatures, and freeze-thaw cycles. This study establishes a simulation test system for complex saline soil environments, integrating findings from real-world environmental investigations. The investigation focused on the degradation
-
Influence of type and particle size of superabsorbent polymer on early water distribution and internal curing zone properties of cement paste Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-04 Fangyu Chen, Shuai Bai, Xinchun Guan, Jing Qiao, Heqing Gou
The types of commercial superabsorbent polymer (SAP) mainly include ionic-SAP acrylic acid (AA) and nonionic-SAP acrylamide-acrylic acid copolymer (AM), which have different particle sizes due to the limited preparation methods. This study used H low-field NMR to clarify the influence of type and particle size of SAP on the water distribution of cement paste. Backscattering electrons and nanoindentation
-
Enhancing compressive strength in cementitious composites via plasma-treated PET aggregates: Insights into interface mechanics Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-04 Huali Hao, Shan Li, Cheuk Lun Chow, Denvid Lau
Surface modification stands out as a promising solution for augmenting interface bonding of cement-based materials incorporating recycled plastic waste as a substitution for natural aggregates. In this work, plasma treatment was employed for surface modification, and the compressive strength of fabricated mortar with plasma-treated PET particles was improved by approximately 9% after a 28-day curing
-
Enhanced mechanical property of steel slag through glycine-assisted hydration and carbonation curing Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-04 Seohyun Kim, Jaekyun Kim, Dongho Jeon, Jusung Yang, Juhyuk Moon
Steel slag, an industrial by-product from the steelmaking process, has limited utilities primarily due to its low reactivity and grindability. This study proposed a new method to actively utilize steel slag as a cementless binder by adding glycine to enhance the reactivity of steel slag under CO curing condition. Employing glycine as an activator under 1 day of hydration followed by 7 days of carbonation
-
Dynamic behaviors of nickel coated carbon nanotubes reinforced ultra-high performance cementitious composites under high strain rate impact loading Cement Concrete Comp. (IF 10.5) Pub Date : 2024-04-04 Danna Wang, Xinyue Wang, Hailong Ye, Feng Yu, Baoguo Han
Understanding the dynamic mechanical behaviors of materials is a prerequisite for reliably analyzing and predicting the dynamic response of structures, which is of great significance for transportation infrastructure and military engineering subjected to extreme loads, particularly dynamic loads at high strain rates. Nickel coated multi-walled carbon nanotubes (Ni-MWCNTs) show promise as a reinforcement
-
Parallel heterogeneous data‐fusion convolutional neural networks for improved rail bridge strike detection Comput. Aided Civ. Infrastruct. Eng. (IF 9.6) Pub Date : 2024-04-04 Hussam Khresat, Jase D. Sitton, Brett A. Story
Low clearance rail bridges provide vital crossings for freight and passenger trains and are susceptible to frequent strikes from overheight vehicles or equipment. Impact detection systems can help ensure the safety of railroad bridges and their users; such systems streamline monitoring efforts by providing near real‐time strike notifications to rail managers responsible for assessing a bridge after
-
Effect of aggregate sizes on dilation properties and stress−strain behavior of FRP-confined recycled aggregate concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 De-Qing Huang, Peng-Da Li
Aggregate size plays a crucial role in determining the mesoscale uniformity and compactness of concrete, directly influencing its dilation characteristics. This dilation behavior, especially under axial load, has significant implications for the tri-axial stress conditions when the concrete undergoes passive confinement using Fiber-Reinforced Polymer (FRP). This study focuses on comprehensively investigating
-
Optimizing reinforced concrete walls and columns through artificial neural networks with structural neighbor-based features J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Christian E. Soledispa, Pablo N. Pizarro, Leonardo M. Massone
Residential reinforced concrete building design relies on close collaboration between architectural and engineering offices to improve the distribution of living spaces while meeting structural regulatory requirements. Several studies have taken advantage of the vast data generated by both offices to create machine-learning models that streamline design processes and decision-making. Recent research
-
Flexural behaviour of post-tensioned precast beams manufactured with basalt-fibre-reinforced recycled concrete–conventional concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Shiping Li, Yan Sun, Ye Qian, Wujun Chen, Jianhui Hu
To promote the sustainable development of the ecological environment, facilitate the recycling of recycled concrete and explore efficient approaches to enhance the performance of structural components, this study proposes a post-tensioned precast beam model manufactured with basalt-fiber-reinforced recycled concrete–conventional concrete. Flexural performance tests were conducted on 12 beams with different
-
Multiple regional climate model projections to assess building thermal performance in Brazil: Understanding the uncertainty J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Matheus K. Bracht, Marcelo S. Olinger, Amanda F. Krelling, André R. Gonçalves, Ana Paula Melo, Roberto Lamberts
-
Optimizing building energy performance predictions: A comparative study of artificial intelligence models J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Omer A. Alawi, Haslinda Mohamed Kamar, Zaher Mundher Yaseen
The December 2022 Commercial Buildings Energy Consumption Survey conducted by the Energy Information Administration (EIA) found that space heating constitutes 32% of total building end-use energy, with cooling accounting for 9%. It has a significant impact on climate change. In this research, intelligent models were developed to predict the annual heating and cooling loads (HL and CL) of residential
-
Experimental study on the progressive collapse resistance of emulative precast concrete beam-column subassemblies with various anchorage details J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Yihua Zeng, Yanpeng Shen, Mohammad Noori, Gang Wu
In this study, seven emulative precast concrete (PC) beam-column subassemblies with or without connecting bars and one concrete (RC) were fabricated and tested to investigate the effect of various types of anchorage detailing for reinforcing and connecting bars on the progressive collapse resistances. Two anchorage detailing formats for steel bars with bending and straight ends were used in the PC
-
Simplified test method for evaluating progressive collapse resistance of precast concrete frame structures J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Sung-Hyun Kim, Bum-Mu Lee, Su-Min Kang, Hyeon-Jong Hwang, Hajin Choi, Gao Ma
To evaluate the progressive collapse resistance of precast concrete (PC) structures, various test methods have been used in existing experimental studies. However, verification of whether the progressive collapse resistance can be evaluated equivalently by different test methods has been limitedly investigated. In this study, three simplified and three half-frame test specimens were tested under monotonic
-
Characterization and utilization of sawdust waste generated from advanced manufacture for its application as a thermal insulation in sustainable buildings using the blowing technique J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Carlos Rojas-Herrera, Aner Martínez-Soto, Constanza Avendaño-Vera, Juan Pablo Cárdenas-R
The construction industry is vital for economic development, but it accounts for 40% of energy consumption and 45% of global greenhouse gas emissions. In this context, research has focused on reducing energy demand in homes, particularly through the development of insulation materials. Sawdust is a byproduct available annually in Chile in quantities exceeding 4.5 million tons. Therefore, the objective
-
Impact of sand to aggregate ratio on mechanical properties and micro-structures of waste crumb rubber concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Jinxu Mo, Fengming Ren, Shaozu Guo, Shiyu Tian, Weiguang Feng, Han Lu, Jianrong Xiong, Wenmei Zhou
The replacement of natural river sand with crumb rubber (CR) in crumb rubber concrete (CRC) has attracted attention for its remarkable toughness and environmentally friendly properties. Sand to aggregate ratio (SAR) needs special attention as an important parameter in the mix proportions design of CRC as the CR volume fraction will vary with the SAR, affecting the particle packing within the CRC and
-
Investigation of flow generated by the collision of two opposed ceiling-attached jets from radial vortex diffusers J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Darko Smoljan, Dario Pupić
Thermal comfort in rooms with mixing air distribution systems is greatly influenced by air jets issuing from ceiling diffusers. Jets are often attached to ceilings, and as the attached jets collide with each other and generate flow, here called a merged jet, directed vertically and towards the occupied zone. In this research, air velocity and turbulence intensity were measured in the zone of the attached
-
Seismic behavior of a novel steel-encased beam-end connection (SEBC) between precast RC beam-CFST column for simple on-site assembly J. Build. Eng. (IF 6.4) Pub Date : 2024-04-04 Liyu Feng, Xuanding Wang, Yue Liao, Jiepeng Liu, Xuhong Zhou, Xiaohu Chen, Kwok-Fai Chung
A novel steel-encased beam-end connection (SEBC) between concrete-filled steel tubular (CFST) column and precast reinforced concrete (PRC) beam is proposed, to achieve the simple on-site assembly of prefabricated CFST bridge piers. Quasi-static tests were carried out to evaluate the seismic behavior of nine SEBC specimens and the key parameters are the encasement length of U-shaped steel jacket and