Asphalt Rubber Chip Seals A Cost Effective And Sustainable Solution For Road Infrastructure,
2025
California Polytechnic State University, San Luis Obispo
Asphalt Rubber Chip Seals A Cost Effective And Sustainable Solution For Road Infrastructure, Gunnar C. Bertsch
Construction Management
Asphalt Rubber Chip Seals provide a durable, cost effective, and environmentally friendly alternative to traditional paving methods by incorporating recycled waste tires. This study evaluates Asphalt Rubber Chip Seals implementation in Arizona and Michigan comparing its effectiveness to conventional paving approaches and the current applications in California. Variations in state funding for road maintenance significantly impact infrastructure quality and longevity, influencing the choice of paving solutions. ARCS has demonstrated resilience in extreme weather conditions, making it a viable option for expansion to states like Arizona and Michigan, where climate variations pose challenges for pavement longevity. The research assesses construction costs, …
Exploration Of Mental Health Stressors And Proposing Interventions Among Heavy-Civil Construction Workers,
2025
California Polytechnic State University, San Luis Obispo
Exploration Of Mental Health Stressors And Proposing Interventions Among Heavy-Civil Construction Workers, Enrrique Zarate
Construction Management
The mental health of heavy civil construction workers is an often-overlooked issue. Long hours, job insecurity, physically demanding work, and workplace culture contribute to significant stress, anxiety, and other mental health challenges among workers in this industry. This research aimed to assess the mental health conditions of heavy civil construction workers, identify key stressors, and propose effective intervention strategies to improve overall well-being. Using a combination of surveys and interviews, this study gathered both quantitative and qualitative data to gain a comprehensive understanding of workers’ mental health. The surveys provided broad insights into common stressors and overall mental health of …
Cal Poly Construction Spanish Class,
2025
California Polytechnic State University, San Luis Obispo
Cal Poly Construction Spanish Class, Josue E. Basilio
Construction Management
This project develops a Construction Spanish & Communication course for Cal Poly’s Construction Management program to address the growing need for bilingual communication on job sites. The course equips students with essential Spanish language skills for safety meetings, work instructions, and team coordination, improving job site efficiency and inclusivity. Deliverables include a detailed course outline in preparation for the semester conversion, curriculum, course catalog entry, and a first-day lecture presentation. The course blends lecture-based instruction with hands-on activities like role-playing, translation exercises, and real-world simulations. Assessments include scenario-based quizzes, a reflection essay, participation grading, and a final exam to ensure …
Development Of A Work Plan For The Mass Timber Installation Phase In The Gateway Decathlon,
2025
California Polytechnic State University, San Luis Obispo
Development Of A Work Plan For The Mass Timber Installation Phase In The Gateway Decathlon, Eduardo Contreras
Construction Management
This project was the development of detailed work plan for the installation of mass timber components in the Gateway Decathlon project, which emphasizes sustainable construction practices aimed at reducing environmental impact. The work plan provides a step-by-step guide for the efficient and safe assembly of structural elements, covering the sequence of tasks, necessary materials and tools, safety procedures, and quality checks to ensure proper execution. By connecting theoretical design concepts with practical construction activities, the plan addresses various logistical challenges encountered during building phases. It highlights the advantages of using mass timber, such as reduced carbon emissions and reliance on …
The Utilization Of Ai To Improve Efficiency In Construction Management,
2025
California Polytechnic State University, San Luis Obispo
The Utilization Of Ai To Improve Efficiency In Construction Management, Sam Balestreri
Construction Management
The construction industry is undergoing a technological transformation, with artificial intelligence emerging as a tool to enhance efficiency, communication, and decision-making. However, the industry has been slow to adopt these advancements due to challenges in integrating new technologies with traditional workflows. This research examines the potential of AI to improve construction management by automating processes such as submittal logs and scope of work documents. The study evaluates ProjectEngineer.ai, an AI-powered co-pilot, to determine its impact on workflow efficiency, writing enhancement and precision, and project outcomes. An analysis of AI-assisted document management methods was conducted in CM 411 Specialties Construction Management, …
Satisfaction And Retention Analysis Of A 4/10 Workweek In Construction,
2025
California Polytechnic State University, San Luis Obispo
Satisfaction And Retention Analysis Of A 4/10 Workweek In Construction, Daniel C. Choy
Construction Management
The traditional 40-hour workweek, structured as five 8-hour days (5/8), has been a long-standing standard in the American workforce since Henry Ford implemented it in 1922. However, in recent years, many industries, including construction, have begun reevaluating this model to determine whether alternative schedules could offer better efficiency and employee satisfaction. One of the most discussed alternatives is the four-day, 10-hour workweek (4/10). This research examines the potential advantages and challenges of adopting the 4/10 schedule, particularly for specialty contractors, through an employee survey conducted at Western Specialty Contractors in Seattle, Washington. The study explores how this schedule affects worker …
Bike Lane Improvement Proposal On Foothill Boulevard,
2025
California Polytechnic State University, San Luis Obispo
Bike Lane Improvement Proposal On Foothill Boulevard, Victor Wan
Construction Management
This project focuses on improving bike lane safety on Foothill Boulevard, a critical commuter route in San Luis Obispo. Outdated and unprotected lanes pose serious risks to cyclists due to high vehicle speeds, faded markings, and a lack of physical separation. This proposal introduces safety improvements, including steel bollards and armadillo humps for protection, high-visibility thermoplastic lane markings, and concrete refuge islands at key intersections. The study evaluates engineering challenges, material selection, installation methods, and cost implications to enhance cyclist safety and promote sustainable transportation.
Effect Of Wall Assemblies On Wi-Fi 6e Signal Strength,
2025
California Polytechnic State University, San Luis Obispo
Effect Of Wall Assemblies On Wi-Fi 6e Signal Strength, Connor C. Borges
Construction Management
This project investigates the signal strength of Wi-Fi signals through different wall assemblies under the new Wi-Fi 6E standard. The project focuses on measuring the signal strength (-dBm) at three distinct frequencies, 6 GHz, 5 GHz, and 2.4 GHz. The 2.4 GHz and 5 GHz frequencies serve as a baseline for comparison with the emerging 6E standard. Wi-Fi 6E offers much higher speeds at the cost of high signal attenuation. The primary objective is to analyze how different construction materials impact Wi-Fi signal strength and to provide comprehensive data on wall assembly attenuation. Wi-Fi 6E signals experience significantly greater attenuation …
Understanding The Underlying Trends In Us Construction Labor Wages: A Data-Driven Mixed-Method Computational Approach,
2025
Missouri University of Science and Technology
Understanding The Underlying Trends In Us Construction Labor Wages: A Data-Driven Mixed-Method Computational Approach, Bahaa Chammout, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Precisely forecasting construction costs is crucial for maintaining financial stability for contractors and the broader construction sector. Nonetheless, this task has long been acknowledged as challenging. Recent global events and inflationary pressures have notably driven up construction labor expenses. While existing research examined labor shortages, there remains a gap in understanding the diverse labor wage trends. This paper addresses this research gap following a multistep methodology, which included: (1) gathering construction labor data from 1999 to 2023; (2) conducting trend and statistical analyses to discern the underlying patterns in labor trends; (3) employing clustering analysis to categorize construction occupations based …
Quantifying The Impact Of Highly Corrosive Environments On Fsrm Budgets And Infrastructure Condition At Air Force Bases,
2025
Air Force Institute of Technology
Quantifying The Impact Of Highly Corrosive Environments On Fsrm Budgets And Infrastructure Condition At Air Force Bases, Justin M. Weber
Theses and Dissertations
The Department of Defense (DoD) faces significant challenges in maintaining mission-critical infrastructure within highly corrosive environments, with annual costs exceeding $22.5 billion to combat corrosion. This thesis investigated the interplay between environmental severity, sustainment funding, and infrastructure performance. This research utilized Facility Sustainment, Restoration, and Modernization (FSRM) funding data, statistical analyses, and regression modeling, to evaluate how Environmental Severity Index (ESI) categories influence Base Condition Index (BCI) trends and the efficacy of the Facility Sustainment Model (FSM). The analysis revealed that installations in higher ESI categories required significantly greater investment per square foot to achieve comparable improvements in BCI. The …
Maintenance Strategy And Budgeting Optimization For United States Air Force Facilities,
2025
Air Force Institute of Technology
Maintenance Strategy And Budgeting Optimization For United States Air Force Facilities, Sophia C. Hirtle
Theses and Dissertations
Mission readiness in the United States Air Force (USAF) is critically dependent on the sustainment and maintenance of aging facilities. However, budgetary and manpower constraints have led to a significant backlog of deferred maintenance, estimated at $137 billion. To address these challenges, this research develops an optimization model that aids in prioritizing facility maintenance strategies within a fixed budget. The methodology incorporates existing USAF data from BUILDER, NexGenIT, and financial records to create a simulation-based optimization framework at the base level. The model evaluates four different maintenance strategies—replacement only, preventative maintenance only, corrective maintenance only, and a combination of preventative …
Proof Of Concept: Using Uas Technology To Accomplish Aerial Roof Inspections,
2025
Air Force Institute of Technology
Proof Of Concept: Using Uas Technology To Accomplish Aerial Roof Inspections, Madison R. Fanning
Theses and Dissertations
With the growing use of simulation across industries, the digital twin remains an underexplored research area, particularly in emergency management and response. Its real-time updating capability is often overlooked due to the misconception that "digital twin" is merely a complex term for simulation. This paper highlights its distinctiveness through an evasion exercise involving two independent entities in a collocated environment. Using a highly integrated virtual environment (HIVE) and internet of things (IoT) devices, we link the physical system with an analytical simulation, demonstrating the impact of lag times in high-pressure scenarios. The computational model leverages agent-based modeling (ABM) and discrete-event …
Static Performance And Stability Of A Multi-Span Hybrid Continuous Rigid Frame Bridge With High Piers,
2025
School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China ;China First Highway Engineering Co ., Ltd., Lishui , Zhejiang 323000 , China
Static Performance And Stability Of A Multi-Span Hybrid Continuous Rigid Frame Bridge With High Piers, Huang Yu, Liu Guanyu, Yi Jianbo, Xing Xuan, Su Miao, Peng Hui
Journal of China & Foreign Highway
In order to study the static performance and stability of a steel-concrete composite continuous rigid frame bridge in Suichang,Zhejiang Province,a single girder and girder lattice finite element model for the whole bridge was established by using Midas Civil,and a local solid finite element model was established by using Ansys.A detailed analysis of the structural displacement and stress state of the bridge in use and the local stress in the solid section of the pier and girder under different loads was carried out.The influence of the pile-bottom restraint stiffness and pier-girder connection form on the overall stability of the bridge was …
Influence Of Train Speed On Thermal Insulation And Anti-Thawing Length For Tunnel In Cold Region,
2025
Henan College of Industry & Information Technology , Jiaozuo , Henan 454000 , China
Influence Of Train Speed On Thermal Insulation And Anti-Thawing Length For Tunnel In Cold Region, Huang Huanan, Chen Yong, Wang Yibo, Wu Yaping
Journal of China & Foreign Highway
To study the influence of train speed on thermal insulation and anti-thawing measures for surrounding rock of tunnels in cold regions,it is necessary to analyze the temperature field.By using the Kunlun Mountain Tunnel Project in cold regions as a case study,the effects of external atmospheric temperature,piston wind effects caused by varying train speeds,and the driving resistance on the distribution of the tunnel ’s internal temperature field were considered.A three-dimensional numerical calculation model including the surrounding rock,concrete lining,and tunnel air was established by utilizing the thermo-fluid-structure interaction (TFSI ) technique.The thermal environment variations caused by trains at different speeds were predicted.The …
Parametric Analysis Of Composite Slab With Steel Bar Trusses At Construction Stages,
2025
Changsha University of Science & Technology , Changsha , Hunan 410114 , China ;CCCC-SHEC West China Construction Co., Ltd., Chengdu , Sichuan 611930 , China
Parametric Analysis Of Composite Slab With Steel Bar Trusses At Construction Stages, Zhang Junhao, He Jun, Tan Chao, Feng Sidong, Wang Zitong
Journal of China & Foreign Highway
To clarify the structural behavior of composite slab with steel bar trusses at key construction stages including hoisting and concrete post-pouring,a composite beam bridge with a main span of 60 m in Georgia ’s E60 Highway was investigated.A finite element model was developed by using ABAQUS to simulate the construction process and analyze the influence of parameters such as prefabricated bottom slab material,number of hoisting points,slab thickness,and number of steel bar trusses on the principal stress of concrete and mid-span deflection.The results indicate that ultra-high-performance concrete (UHPC ) prefabricated bottom slabs prevent plastic damage and enhance slab stiffness.Normal concrete (NC) …
Cracking Characteristics Of Cement-Stabilized Macadam With Early Strength Agent Under Variable Temperature And Humidity Curing Conditions,
2025
College of Transportation Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China ;National Engineering Research Center of Highway Maintenance Technology , Changsha , Hunan 410114 , China ;National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment (Changsha ), Changsha , Hunan 410114 , China
Cracking Characteristics Of Cement-Stabilized Macadam With Early Strength Agent Under Variable Temperature And Humidity Curing Conditions, Ge Dongdong, Liu Dingyuan, Lyu Songtao, Jiang Xiangyang, Xue Yanhua, Yu Yang
Journal of China & Foreign Highway
In environments with large temperature variations and low humidity,the curing conditions of cement-stabilized macadam fail to meet the specifications,leading to slow early strength development and increased susceptibility to cracking.This study aimed to investigate the effects of actual environmental temperature,humidity,curing age,and addition of early strength agents on the cracking characteristics of cement-stabilized macadam.Variable temperature conditions were determined based on actual environmental temperature data.Four curing conditions were set by combining temperatures (variable temperature and standard temperature ) with relative humidity of 95%,80%,and 65%,respectively.Three types of specimens were prepared with 0%,10%,and 15% early strength agent contents and cured for 14 and 28 days,respectively.The …
Identification And Prediction Model For Traffic Blockage State Of Highways To Xizang,
2025
CCCC First Highway Consultants Co ., Ltd., Xi’an, Shaanxi 710065 , China ;School of Vehicle Engineering , Xihang University , Xi’an, Shaanxi 710077 , China
Identification And Prediction Model For Traffic Blockage State Of Highways To Xizang, Wu Ling, Liu Jianbei, Zhang Zhiwei, Shan Donghui, Chi Gandu
Journal of China & Foreign Highway
To identify the traffic blockage state on highways to Xizang in extreme environments,comprehensive evaluation indicators for traffic blockage state based on the entropy-weighted TOPSIS method were proposed by using the traffic blockage event parameters observed on four major highways to Xizang:Sichuan ‒ Xizang Highway,Yunnan ‒ Xizang Highway,Qinghai ‒ Xizang Highway,and Xinjiang ‒ Xizang Highway.The K-Medoids clustering algorithm was used to categorize the traffic blockage state into different levels.By considering factors such as hazard types,road types,traffic volume,and vehicle type ratios,a classification model for the traffic blockage state on highways to Xizang was constructed based on machine learning algorithms.The results show that …
Seismic Performance Of Bridge Pile Foundation Considering Effects Of Material Freeze-Thaw Deterioration And Permafrost Degradation,
2025
School of Civil Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu 730070 , China
Seismic Performance Of Bridge Pile Foundation Considering Effects Of Material Freeze-Thaw Deterioration And Permafrost Degradation, Zhang Xiyin, Yu Shengsheng, Wang Wanping, Wen Hairong
Journal of China & Foreign Highway
In cold and high-seismic regions,such as the Qinghai‒Xizang Plateau in China,the deterioration of material properties caused by freeze-thaw cycles and permafrost degradation due to climate change have become increasingly severe,posing significant challenges for the seismic performance assessment of bridge pile foundations.To systematically investigate the impact of permafrost degradation and material freeze-thaw deterioration on the seismic performance of bridge pile foundations and ensure proper seismic design,a finite element model was established,considering the dual effects of permafrost degradation and material freeze-thaw deterioration.A comparative analysis was conducted to evaluate the influence mechanisms of various factors on the seismic performance of bridge pile foundations …
Design And Simulation Evaluation Of Converged Toll Collection Schemes For Senegalese Highways,
2025
China Road & Bridge Corporation , Beijing 100011 , China
Design And Simulation Evaluation Of Converged Toll Collection Schemes For Senegalese Highways, Lai Zengcheng, Zhang Ning, Yang Shichun, Ding Xueqi, Ji Yanjie
Journal of China & Foreign Highway
The Senegalese highway toll collection system is inefficient,and significant congestion and delays frequently occur at toll stations in the face of sudden traffic surges during holidays.This paper examined the limitations of the existing toll collection methods on Senegalese highways and combined the image detection algorithm and electronic license plate recognition technology with the existing MTC and ETC toll collection methods to construct a converged toll collection method based on vehicle information recognition.The paper aimed to optimize the Senegalese highway toll collection system,reduce its cost of use,and improve the efficiency of toll collection.The BPV Thiès toll station in Senegal was selected …
Model Test On Bearing Capacity Of Gravity Anchor Foundation Considering Rock Socketed Effect,
2025
Guangdong Province Highway Construction Co ., Ltd., Guangzhou , Guangdong 510623 , China
Model Test On Bearing Capacity Of Gravity Anchor Foundation Considering Rock Socketed Effect, Yin Jingze, Guo Chao, Zhang Xinmin, Li Wei, Shi Haiyang, Fu Baiyong
Journal of China & Foreign Highway
The calculation of the bearing capacity of traditional gravity anchor foundation instructed by Code for Design of Ground Base and Foundation of Highway Bridges and Culverts (JTG D 63—2007 ) only considers the friction effects of the basement and neglects the rock socketed effect of bottom plate,which is simply regarded as a safety margin,on the improvement of bearing capacity.To study the influence of rock socketed effect on the bearing capacity of gravity anchor,this paper designed two groups of indoor scale model tests on non-rock-socketed and rock-socketed gravity anchors with a scale of 1∶50 to discuss the bearing capacity and load …
