Toward Autonomous Pavement Inspection: An End-To-End Vision-Based Framework For Pci Computation And Robotic Deployment,
2025
The British University in Egypt
Toward Autonomous Pavement Inspection: An End-To-End Vision-Based Framework For Pci Computation And Robotic Deployment, Nada El Desouky, Ahmed Torky, Mohamed Elbheiri, Mohamed Eid, Mohamed Ibrahim
Civil Engineering
Advancements in robotics and computer vision are transforming how infrastructure is monitored and maintained. This paper presents a novel, fully automated pipeline for pavement condition assessment that integrates real-time image analysis with PCI (Pavement Condition Index) computation, which is specifically designed for deployment on mobile and robotic platforms. Unlike traditional methods that rely on costly equipment or manual input, the proposed system uses deep learning-based object detection and ensemble segmentation to identify and measure multiple types of road distress directly from 2D imagery, including surface weathering, a key precursor to pothole formation often overlooked in previous studies. Depth estimation is …
Seeing What Matters: Safety-Critical Semantic Segmentation Via Transfer Learning On Construction Sites,
2025
Louisiana State University and Agricultural and Mechanical College
Seeing What Matters: Safety-Critical Semantic Segmentation Via Transfer Learning On Construction Sites, Obiora J. Odugu
LSU Master's Theses
Autonomous robots are increasingly deployed on construction sites for tasks such as progress monitoring, inspection, and safety assessment. For these robots to operate effectively, they must perceive and interpret complex, dynamic environments populated by workers, machinery, and unstructured terrain. Achieving reliable perception depends on high performing semantic segmentation models trained on large volumes of annotated data—an expensive and logistically challenging requirement in construction due to privacy restrictions, variable site access, and slow digitalization. This research addresses the challenge of limited labeled data by investigating transfer learning as a label-efficient approach for construction-site segmentation. Specifically, it explores whether road construction imagery—abundant …
Sustainable Robotic Construction: A Computational Particle Packing Approach For The Development Of Sustainable, Low-Cement 3d Printable Materials,
2025
Louisiana State University and Agricultural and Mechanical College
Sustainable Robotic Construction: A Computational Particle Packing Approach For The Development Of Sustainable, Low-Cement 3d Printable Materials, Aranya Aumit Paul
LSU Master's Theses
Construction 3D Printing (C3DP) holds great potential for automated construction but faces key challenges, including the high Portland cement content of its printing materials. The high cement content raises material costs, causes shrinkage and thermal cracking, and increases its carbon footprint. This study introduces a novel hybrid computational pipeline that combines image based automated gradation analysis with 2D stochastic particle packing simulation, to design low-cement printable materials with minimal experimental testing. The image-based gradation system achieved a mean absolute error under 3.64% across six fine and coarse aggregate types. The particle packing simulation demonstrated an average error of less than …
An Integrated Decision Support System For Bim Level 3 Implementation,
2025
American University of Sarjah
An Integrated Decision Support System For Bim Level 3 Implementation, Lama Abumoeilak, Salwa Beheiry, Serter Atabay
Civil and Environmental Engineering Faculty Publications
The Architecture, Engineering, and Construction (AEC) sector accounts for 39% of greenhouse gas emissions, 40% of solid waste, and 12% of potablewater usage globally, underscoring the need for sustainable, efficient practices. Building Information Modeling (BIM) offers a digital framework to address these challenges through lifecycle management, collaboration, and efficiency gains. However, most organizations remain at BIM Level 2 maturity, which limits their potential for full integration. This study proposes a comprehensive Decision Support System (DSS) to facilitate the adoption of BIM Level 3, with an emphasis on collaboration, sustainability, and data interoperability. The DSS integrates Structural Equation Modeling (SEM), Analytical …
Building Services Engineering September/October 2025,
2025
Technological University Dublin
Building Services Engineering September/October 2025
Building Services Engineering
No abstract provided.
Risk Allocation Model For Price Escalations In Construction Projects: Integrating Bargaining Game Theory And Probabilistic Bayesian Modeling,
2025
Missouri University of Science and Technology
Risk Allocation Model For Price Escalations In Construction Projects: Integrating Bargaining Game Theory And Probabilistic Bayesian Modeling, Yasser Jezzini, Rayan H. Assaad, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Economic market uncertainties, like those witnessed during pandemics and supply chain-related challenges, introduce complexity in ascertaining precise price estimates for construction materials. Despite some studies on risk allocation in construction projects utilizing quantitative and qualitative approaches, these studies fail to explain the underlying process of risk allocation due to a lack of theoretical support, indicating a need for a more structured and theoretically grounded approach to understanding risk allocation, specifically under volatile market conditions. To bridge this knowledge gap, this study proposes a novel game-theoretical model integrating Bayesian statistics and bargaining game theory dynamics, offering a robust framework for optimal …
Labor Productivity Losses Across Construction Trades: A Machine Learning Approach,
2025
Missouri University of Science and Technology
Labor Productivity Losses Across Construction Trades: A Machine Learning Approach, Tamima Elbashbishy, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Labor productivity is a major concern in the construction industry. Existing research on construction labor productivity (CLP) within specific trades has produced inconsistent findings due to differences in the factors analyzed. This lack of consistency makes it difficult to identify the most critical drivers of productivity losses across trades. To address this gap, this study adopts a cross-trade analytical approach to systematically identify and evaluate the inefficiencies impacting labor productivity in multiple construction trades. Specifically, the study (1) identified common organizational and project-level inefficiencies that influence labor performance; (2) conducted an expert-based survey to measure the frequency and perceived impact …
Price Adjustment Clauses: Enhanced Price Volatility Forecasting For Construction Materials,
2025
Missouri University of Science and Technology
Price Adjustment Clauses: Enhanced Price Volatility Forecasting For Construction Materials, Ahmed Shiha, Mariam Elazhary, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Price adjustment clauses (PACs) are used by state departments of transportation (DOTs) to share the risk of material price fluctuations. Existing models that depict the price fluctuations of materials forecast a mean within a horizon while relying on the assumption of a constant volatility throughout that horizon. However, none of them examine whether the prices of construction material exhibit similar volatility following a sudden price surge or a price drop. The prospect of PACs and their associated trigger values is hindered in the absence of empirical assessments of their capacity to capture the volatilities in material prices. This paper fills …
Exploring The Adoption Of Construction Technologies In Infrastructure Projects: Bridging Perceptions Of Experts With Real Project Data,
2025
Missouri University of Science and Technology
Exploring The Adoption Of Construction Technologies In Infrastructure Projects: Bridging Perceptions Of Experts With Real Project Data, Fareed Salih, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Infrastructure projects have progressively adopted construction technologies, yet previous studies have not fully explored technology utilization by comparing the perceptions of experts with actual project data. This research fills this knowledge gap. The authors (1) developed, distributed, and collected a survey completed by 52 construction practitioners to investigate the use of these technologies and their associated benefits; (2) checked the survey reliability and validity using Cronbach's alpha test; (3) investigated the perceptions of utilizing construction technologies across industry sectors; (4) explored the perceptions of benefits across industry sectors; (5) analyzed the impact of construction technologies on project objectives and phases …
Guiding State-Specific Studies On Highway Disasters: Examining Differences In Postdisaster Funding,
2025
Missouri University of Science and Technology
Guiding State-Specific Studies On Highway Disasters: Examining Differences In Postdisaster Funding, Mariam Elazhary, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The highway sector is frequently and severely impacted by natural disasters. To mitigate these effects and reduce the need for large relief budgets or emergency funds, it is crucial to study the resilience of the transportation network. As such, defining resilience in absolute terms is not enough; instead, it is equally important to analyze specific case studies and build a lessons-learned rapport. This is critical because it helps identify unique vulnerabilities and strengths that might be overlooked in broader analyses. However, current research on highway resilience often lacks empirical evidence to support the selection of these unique and significant case …
Temporal Evolution Of Workforce Fatality-Linked Factors In The Transportation Construction Sector,
2025
Missouri University of Science and Technology
Temporal Evolution Of Workforce Fatality-Linked Factors In The Transportation Construction Sector, Mariam Elazhary, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Despite advancements in safety measures, fatalities in the transportation sector remain disproportionately higher than in other industries. Transportation sector fatalities arise from a combination of demographic, environmental, and occupational factors that amplify the overall risk. While strides have been made in understanding the factors contributing to fatalities, there remains a critical gap in research focused on their temporal evolution. The goal of this study is to investigate the temporal evolution of fatality-linked association factors in the transportation construction sector. The methodology encompassed three stages. Stage 1 was preprocessing the data: the US Census of Fatal Occupational Injuries, covering 3,792 fatality …
Hybrid Forecasting Of University Electricity Demand Using Time Series And Deep Learning,
2025
Kennesaw State University
Hybrid Forecasting Of University Electricity Demand Using Time Series And Deep Learning, Minsoo Baek, Youngguk Seo
Faculty Articles
University buildings are energy-intensive and operate on complex schedules, making electricity demand forecasting particularly challenging. This study develops and evaluates monthly forecasting models for a public university campus in Georgia using six years of data (January 2019–December 2024) that integrate weather variables and academic calendar indicators. Three modeling approaches are compared: Seasonal Autoregressive Integrated Moving Average (SARIMA), SARIMA with exogenous variables (SARIMAX), and a hybrid SARIMAX–Long Short-Term Memory (LSTM) model. Feature selection methods, correlation analysis, Granger causality, Random Forest importance, Recursive Feature Elimination (RFE), and Least Absolute Shrinkage and Selection Operator (LASSO) regression, were applied to optimize input relevance. The …
A Review On Connection Forms Between Bridge Guardrails And Bridge Decks,
2025
Research Institute of Highway Ministry of Transport , Beijing 100088 , China
A Review On Connection Forms Between Bridge Guardrails And Bridge Decks, Li Wei, Li Rutao, Jia Ning, Lu Jian
Journal of China & Foreign Highway
In recent years,with the continuous expansion of highway bridge construction in China,there has been a growing public demand to enhance road safety and the protective capabilities of highway bridges.To meet the engineering application requirements of various bridge forms and bridge guardrails,diverse connection structures between bridge guardrails and bridge decks have been studied both domestically and internationally.However,in current engineering practice,the selection of these connection forms remains challenging,lacking clear reference criteria.Using the analytic hierarchy process and supported by experimental data,this paper comprehensively analyzed the advantages and disadvantages of these connection forms by considering factors such as guardrail protection effectiveness,load-bearing reliability,construction convenience,and ease …
Effect Of Granite Machine-Made Sand Properties On Concrete Performance,
2025
School of Civil Engineering , Hebei University of Engineering , Handan , Hebei 056038 , China ;Research Institute of Highway , Ministry of Transport , Beijing 100088 , China
Effect Of Granite Machine-Made Sand Properties On Concrete Performance, Wang Jiliang, Wei Xinyuan, Yu Bo
Journal of China & Foreign Highway
As an important stone resource in China,granite is widely used in the preparation of machine-made sand and other building materials due to its stable physical properties and favorable mechanical performance.In order to promote the better application of granite in machine-made sand for cement concrete,this paper analyzed the mineral composition,particle grading,and mica content of granite machine-made sand.It systematically summarized the influence of these characteristics on the mechanical properties,durability,and volumetric stability of concrete.The results show that the concrete performance declines with increasing mica and stone powder content in granite machine-made sand.Properly limiting their content can improve the mechanical properties and durability of …
Wind Tunnel Test Study On Vortex-Induced Vibration Performance Of Cable-Stayed Bridge With Double-Side Box Open Section Composite Main Girder,
2025
Hubei Communications Planning and Design Institute Co ., Ltd., Wuhan , Hubei 430051 , China
Wind Tunnel Test Study On Vortex-Induced Vibration Performance Of Cable-Stayed Bridge With Double-Side Box Open Section Composite Main Girder, Zhou Guohua, Du Guoqiang, Pei Shan, Ding Wangxing, Zhu Zhiwen
Journal of China & Foreign Highway
In order to evaluate the vortex-induced vibration (VIV ) performance of a single-tower ground-anchored cable-stayed bridge with a double-side box open section composite main girder,sectional model wind tunnel tests were conducted under different wind angles of attack and wind speeds.The results show that the torsional stiffness of the π-shaped open section main girder is significantly higher than its vertical bending stiffness.The dominant vibration mode of the main girder is the obvious vibration of the main span,while the ground-anchored abutment effectively stabilizes the cable tower through the back stays.At the damping ratio level specified in the code,within the range of prevailing …
Research On Crack Identification Technology Based On Sobel + Matched Filter Joint Algorithm,
2025
Sichuan Lexi Expressway Co .,Ltd., Xichang , Sichuan 615099 , China
Research On Crack Identification Technology Based On Sobel + Matched Filter Joint Algorithm, Wen Yan, Guo Xiaoqian, Tang Youzhi, Yang Enhui, Qiu Yanjun
Journal of China & Foreign Highway
To address the problems of hollow recognition results,high noise,and poor crack continuity in pavement crack identification using the Sobel algorithm,this paper proposed a joint algorithm combining the Sobel algorithm and matched filter for three-dimensional crack recognition of asphalt pavement.A matched filter in the form of a sine function was designed,and the matched filter was used to extract crack features from the results of the Sobel algorithm.The matched filter results were subjected to threshold filtering and connected domain analysis to effectively solve the hollow recognition problem,while also reducing noise and improving crack continuity.The test results show that the Sobel + matched …
Research On Prefabrication Scheme Of Concrete Barrier Based On Anchorage In Cast-In-Situ Layer,
2025
Zhongshan Donghuan Expressway Co ., Ltd., Zhongshan , Guangdong 528400 , China
Research On Prefabrication Scheme Of Concrete Barrier Based On Anchorage In Cast-In-Situ Layer, Liang Xiaochong, Kang Hanjing, Luo Yongchuan, Wen Zhiquan, Deng Bao
Journal of China & Foreign Highway
In order to improve the on-site construction efficiency of bridge concrete barriers,a prefabrication scheme for bridge concrete barrier installation was proposed.A structure scheme was developed by anchoring transverse steel bars at the bottom of prefabricated wall panels into the integrated cast-in-situ layer,adopting tongue-and-groove connections between adjacent wall panels,and optimizing the structural configuration and reinforcement of the panels.According to the requirements of the Level VI protection standard,full-scale impact tests using a large bus and a large truck were organized in turn.The results show that the prefabricated concrete bridge barrier can effectively withstand continuous impacts from both large buses and trucks.Its structural …
Application Of Grouted Steel Pipe Micropile Composite Structure In Highway Landslide Treatment,
2025
Sichuan Communication Surveying & Design Institute , Co., Ltd., Chengdu , Sichuan 610017 , China
Application Of Grouted Steel Pipe Micropile Composite Structure In Highway Landslide Treatment, Wu Bing, Liang Yao, Li Jie, Zhao Honghu
Journal of China & Foreign Highway
To optimize the calculation methods and application schemes for reinforcing landslides using grouted steel pipe micropile composite structures,the composition of single-pile composite structures and the combination forms of pile group structures were described.By taking the Bishop method as an example,a stability analysis method and the anti-sliding principle of side (sliding ) slopes reinforced with grouted steel pipe micropile composite structures were proposed,and a calculation formula for the allowable shear resistance of the composite pile was derived.By taking a landslide case from a section of Lijiang‒Panzhihua Expressway as an example,landslide stability analysis and landslide thrust calculation were carried out.The grouted steel …
Settlement Calculation Method For Composite Foundations Reinforced With Geo-Encased Stone Columns,
2025
Hunan Yanhu Construction Engineering Co ., Ltd., Yueyang , Hunan 414002 , China
Settlement Calculation Method For Composite Foundations Reinforced With Geo-Encased Stone Columns, Long Jun, Tan Jingpeng
Journal of China & Foreign Highway
Geo-encased stone columns (GESCs ),known for their cost-effectiveness and simple construction,are widely employed in the reinforcement of soft soil foundations in practical engineering,and the analysis of their settlement serves as a crucial foundation for the design process.However,existing research mainly focuses on experimental and numerical methods,with relatively limited progress in theoretical calculations.Based on the load transfer mechanism of GESC-reinforced composite foundations and the bulging deformation of the pile body within a certain depth of the pile top under vertical loading,the reinforced zone was divided into a bulging section and a non-bulging section,and the total settlement of the pile was regarded as …
Study On Deformation Characteristics Induced By Deep Foundation Pit Excavation Sharing Diaphragm Wall With Existing Subway Station,
2025
School of Civil and Environmental Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
Study On Deformation Characteristics Induced By Deep Foundation Pit Excavation Sharing Diaphragm Wall With Existing Subway Station, Ling Tonghua, Zou Nanwei, Zhou Kun, Feng Wei, Wu Xing, Zhang Liang
Journal of China & Foreign Highway
To investigate the deformation induced by deep foundation pit excavation sharing a diaphragm wall with an existing subway station,this study took the foundation pit project of Gongming Square Station of Shenzhen Metro as an example.A three-dimensional numerical model was established by FLAC3D software to analyze the deformation characteristics of the surrounding ground surface,retaining structures,and the subway station during the excavation process.In addition,field monitoring was conducted to measure the vertical and horizontal displacements of the pit sidewall and the subway station sharing the diaphragm wall.The results show that after excavation,the ground surface settlement behind the retaining wall exhibits an approximately elliptical …
