Construction Engineering and Management Commons^™

การประยุกต์ใช้เหล็กกล่องเติมด้วยคอนกรีตกำลังสูงเป็นเสาในโครงสร้างที่พักอาศัย, พีรดนย์ ลอออรรถพงศ์

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาและประเมินสิทธิภาพของโครงสร้างเหล็กกล่องเติมด้วยคอนกรีตกำลังสูง (High-Strength Concrete-Filled Steel Tube, HSCFST) สำหรับการประยุกต์ใช้กับบ้านพักอาศัย อันเป็นการตอบสนองต่อปัญหาการขาดแคลนแรงงานฝีมือ การเพิ่มขึ้นของค่าแรง และความจำเป็นในการลดระยะเวลาการก่อสร้างและต้นทุน การศึกษาได้พิจารณากรณีบ้านพักอาศัยสูง 3 ชั้น จำนวน 4 หลัง โดยทำการจำลองโครงสร้างด้วยโปรแกรม ETABS เพื่อตรวจสอบพฤติกรรมการรับแรงในแนวดิ่งและแรงจากแผ่นดินไหวของโครงสร้าง ซึ่งการออกแบบเสาเหล็กกล่องเติมด้วยคอนกรีตกำลังสูงอ้างอิงมาตรฐาน AISC 360-22 (LRFD) ผลการออกแบบพบว่าสามารถลดขนาดเสาให้เล็กลงเหลือ 125 มิลลิเมตร และ 150 มิลลิเมตร เพื่อให้มีขนาดไม่เกินความหนาของผนังบ้านได้เมื่อใช้คอนกรีตที่มีกำลังรับแรงอัดสูงกว่า 60 เมกะปาสคาล ร่วมกับเหล็กกล่องชนิดที่มีจำหน่ายในท้องตลาด โดยโครงสร้างที่ได้ออกแบบทั้ง 4 หลัง พบว่ามีประสิทธิภาพในการรับน้ำหนักบรรทุกและแรงแผ่นดินไหวดีกว่าโครงสร้างคอนกรีตเสริมเหล็กแบบเดิมในทุกด้าน ทั้งยังพบว่ามีต้นทุนการก่อสร้างที่ต่ำกว่าเสาคอนกรีตเสริมเหล็กอย่างมีนัยสำคัญ นอกจากนี้ยังได้ทำการทดสอบเสาเหล็กกล่องเติมด้วยคอนกรีตกำลังสูงในห้องปฏิบัติการ เพื่อเปรียบเทียบกำลังรับแรงอัดกับค่าที่ได้จากสมการทำนายตามมาตรฐาน AISC 360-22 พบว่าค่าที่ได้จากการคำนวณมีค่าต่ำกว่าผลการทดสอบจริงค่อนข้างมาก ส่งผลให้เกิดความมั่นใจยิ่งขึ้นต่อการนำเสาเหล็กกล่องเติมด้วยคอนกรีตกำลังสูงไปใช้จริงในงานก่อสร้างบ้านพักอาศัย

Leveraging Product And Process Characteristics Across The Concrete Pavement Life Cycle To Integrate Global Warming Potential Into Project Procurement Processes, Michelle Annette Cooper

Dissertations, Master's Theses and Master's Reports

The objective of this research is to support sustainable procurement of concrete pavements by linking materials-level global warming potential (GWP) to the project-level. Infrastructure owners require reliable environmental product declarations (EPDs) and methodologies for integrating GWP into the procurement process to ensure equitable decision-making. This work provides insights into current EPD reliability by assessing the sensitivity of concrete GWP to materials-level contributors to recommend a level of supply chain specificity needed to effectively communicate GWP. A benchmarking methodology was developed and implemented to establish reference values for procuring sustainable products. Having provided evidence towards EPD reliability, this work presents a …

Development Of A Spss-Based Prediction Model To Evaluate ‎Volatile Organic Compounds During Trenchless Cured-In-Place Pipe Method, Salar Bavili Nezhad

Civil Engineering Dissertations - Archive

The Cured-in-Place Pipe (CIPP) method is a widely implemented trenchless technology for the rehabilitation of deteriorated pipelines, offering benefits such as cost-effectiveness and reduced surface disruption. However, the CIPP installation process, particularly during curing, raises concerns over the emission of Volatile Organic Compounds (VOCs), which can adversely impact worker safety, public health, and environmental standards. This dissertation aims to address these concerns by evaluating VOC emissions during CIPP installations and developing a predictive model to guide emission management practices.

A comprehensive field study was conducted, collecting air samples from 15 pipeline rehabilitation sites that utilized different site-specific conditions using non-Styrene …

Development Of Supervised Machine Learning-Based Life-Cycle Cost Estimation And Prediction Models For Comparative Sewer System Rehabilitation Using Open-Cut And Trenchless Cured-In-Place Pipe Methods, Gayatri R. Thakre

Civil Engineering Dissertations - Archive

Aging wastewater infrastructure in the United States demands renewal strategies that balance cost-effectiveness, sustainability, and minimal social disruption. Conventional open-cut pipeline installation (OCPI) involves extensive excavation and restoration, whereas trenchless alternatives such as Cured-in-Place Pipe (CIPP) Renewal Technology offer reduced surface disturbance and environmental impacts. However, existing studies primarily focus on Construction Costs (CC), neglecting integrated life-cycle evaluations that also account for Environmental Costs (EC) and Social Costs (SC).

The primary objectives of this research are to develop supervised machine-learning (ML) models to estimate and predict CC in 2025 US dollars (USD) per linear foot of OCPI and CIPP Renewal …

Development Of A Drone-Assisted Pavement Management Framework Based On The Pavement Condition Index For University Parking Lots, Omesh Pasuluru

Civil Engineering Theses - Archive

Efficient pavement management is essential for keeping university parking lots in good condition. At the University of Texas at Arlington, parking areas experience heavy use and environmental wear, which can cause damage if not addressed early. Traditional methods for assessing pavement conditions are time-consuming, interrupt daily activities, and are expensive. Hence, there is a need for better solutions. This study introduces a drone-based pavement management approach that uses the Pavement Condition Index (PCI) system. The PCI is a numerical scale from 0 to 100 that rates pavement quality based on surface condition. A high PCI score (85-100) indicates the pavement …

Field-Curing Methods For Evaluating The Strength Of Concrete Test Specimens, Pranshoo Solanki, Haiyan Xie

Faculty Publications – Technology

The purpose of this combined laboratory and field study was to evaluate field-curing methods of concrete specimens for estimating the early opening strength of an in-place concrete item. One Illinois Department of Transportation (IDOT) class PV mix was used to cast cylinders, beams, and in-place concrete slabs in October 2021 and February 2022. Concrete cylinders were cured using three methods: ambient air (method #C1), an insulated box/cooler (method #C2), and a power-operated box (method #C3). Beams were cured using two methods: ambient air (method #B1) and an insulated plywood box (method #B2). The cast-in-place specimens from each slab and cylinder …

พฤติกรรมการเปลี่ยนช่องจราจรบริเวณจุดรับส่งผู้โดยสาร, ศุภวิชญ์ มัธยมนันทน์

Chulalongkorn University Theses and Dissertations (Chula ETD)

ในสภาพการจราจรจริง การไหลของกระแสจราจรมักถูกรบกวนจากยานพาหนะที่จอดเพื่อรับ–ส่งผู้โดยสาร ส่งผลให้ยานพาหนะที่ขับขี่ตามมามีสองทางเลือก ได้แก่ การรอให้ยานพาหนะด้านหน้าเคลื่อนตัวต่อไป หรือการเปลี่ยนช่องจราจรไปยังช่องที่สามารถเคลื่อนที่ได้ ซึ่งทั้งสองทางเลือกล้วนทำให้ประสิทธิภาพการไหลของจราจรลดลงเมื่อเทียบกับกรณีที่ไม่มีการรบกวนดังกล่าว ในปัจจุบัน การใช้แบบจำลองจราจรช่วยให้สามารถทำความเข้าใจและคาดการณ์สภาพการจราจรได้โดยไม่ต้องทดลองในพื้นที่จริง แต่แบบจำลองทั่วไปยังขาดความเฉพาะเจาะจงเมื่อต้องเผชิญสถานการณ์เฉพาะทาง โดยมักใช้พฤติกรรมพื้นฐานเพียงชุดเดียวในการแทนพฤติกรรมผู้ขับขี่ทุกกรณี งานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาพฤติกรรมการเปลี่ยนช่องจราจรของผู้ขับขี่เมื่อแล่นตามหลังรถที่จอดรับ–ส่งผู้โดยสาร จากนั้นนำพฤติกรรมที่ได้จากภาคสนามไปใช้ในการพัฒนาแบบจำลองสภาพจราจรใน PTV VISSIM และทำการเปรียบเทียบกับพฤติกรรมจริง ข้อมูลภาคสนามถูกเก็บรวบรวมด้วยการบันทึกวิดีโอและประมวลผลด้วย Video Analytics ก่อนนำไปสร้างแบบจำลอง ผลการศึกษาพบว่า แบบจำลองสามารถจำลองพฤติกรรมการเริ่มต้นเข้าสู่การเปลี่ยนช่องจราจรได้ใกล้เคียงกับข้อมูลจริง โดยช่องว่างเชิงเวลา (Lag Gap) ของยานพาหนะที่ขับขี่ตามมามีค่าเฉลี่ย 0.425 วินาทีในภาคสนาม และ 0.375 วินาทีในแบบจำลอง อย่างไรก็ตาม แบบจำลองยังไม่สามารถสะท้อนพฤติกรรมการเปลี่ยนช่องจราจรได้ครบถ้วนทุกด้าน ซึ่งเป็นประเด็นที่ควรได้รับการพัฒนาเพิ่มเติมในงานวิจัยอนาคต

Software Literacy In Construction, Aidan Cazares

Williams Honors College, Honors Research Projects

The construction industry increasingly relies on software like Bluebeam Revu for their quantity takeoff, document management, and collaboration needs. This project will outline pertinent information obtained through their Bluebeam professional training program and reflect it with a detailed estimate of a real life construct project.

Influence Of Deck Area And Average Daily Traffic On The Deterioration Of Bridge Superstructures., Faysal Ahamed

Graduate Theses, Dissertations, and Problem Reports (ETD)

State Departments of Transportation (DOTs) are responsible for maintaining approximately 623,000 bridges across the United States. Effective bridge management requires a comprehensive understanding of the factors influencing structural deterioration. Numerous studies have explored the effects of average daily traffic (ADT) and deck area (DA) on bridge deck deterioration. Given the interdependence between bridge decks and superstructures, it is plausible that ADT and DA significantly influence superstructure condition ratings and deterioration trends. However, their impact on superstructures remains insufficiently studied. In addition, existing studies primarily focus on overall bridge deterioration without adequately differentiating between superstructure designs and materials and maintenance authorities. …

Centralized Deep Reinforcement Learning For Homogeneous Multi-Component Maintenance Optimization, Joseph W. Wittrock

Theses and Dissertations

This thesis explores an application of reinforcement learning (RL) in maintenance optimization. Recent advances in hardware-accelerated computation and deep learning have made RL a powerful tool for solving optimization problems which are too complex for traditional methods. Maintenance optimization involves improving the efficiency and effectiveness of maintenance activities through data-driven approaches, ultimately reducing costs and increasing asset availability. Making informed maintenance decisions is crucial to long-term sustainability.

A desirable maintenance policy maximizes a utility signal while minimizing the cost of maintenance. Techniques in sequential decision making such as dynamic programming (DP) and RL have found success in optimizing these maintenance …

Evaluating The Effectiveness Of Stay-In-Place Forms To Improve The Tosional Stability Of Box Beam Bridges During Erection, Karl E. Barth, Michael W. Seek, Gregory K. Michaelson, Dimitra Pyrialakou, Brook T. Woldegabriel

Engineering Technology Faculty Publications

Cold-formed tub girders provide an effective steel solution for short-span bridges. The girders are often delivered with an open top with stay-in-place forms installed on site. Walkways may be installed to the side of the girder that can induce significant torsion rotations in the open cross section. Full scale tests on girder specimens have shown that installing one or two panels of stay in place forms at the ends of the girder can significantly reduce the torsion rotation of the girder by providing warping resistance. Cantilever tests on the stay in place forms are performed to investigate the influence of …

Building Obsolescence: Key Factors Influencing Demolition Decisions For Commercial Buildings, Azlan Shah Ali, Zakaria Norhanim, Zulkifly Umi-Kalsum, Zaki Faiz

Research Publications (2021 to 2025)

Buildings, while primarily serving to provide shelter, can deteriorate over time without proper maintenance and planning, leading to obsolescence, a significant threat to their functionality. This study investigates the factors contributing to building obsolescence and how they influence the selection of adaption strategies, focusing on commercial buildings as a case study. Questionnaire data were gathered from 386 business owners and occupants of obsolete buildings in Klang Valley, Malaysia, to capture their perspectives on the issue. Principal Component Analysis (PCA) and Multiple Linear Regression (MLR) were employed to rank obsolescence factors and solution options on strategies on obsolescence factors. PCA results …

A Comprehensive Guide To Construction Documentation: From Hand Drafting To Bim, Cesar Salazar

Open Educational Resources

The construction industry relies heavily on precise and clear documentation to ensure the successful completion of projects. This book is a comprehensive guide to creating construction drawings, focusing on the principles and best practices that lead to high-quality outputs. Unlike manuals that teach specific software tools, this book emphasizes the effective use of various drawing tools to produce detailed graphic narratives that support the entire construction process, from inception to completion.

Dynamic Modulus Of Sbs-Modified Asphalt Mixtures Added With Ground Tire Rubber Content, Azharul Islam

College of Graduate Studies: Theses & Dissertations

The study investigates the improvement of the dynamic shear modulus in the base and styrene butadiene styrene (SBS) modified asphalt mixture by accumulating varying amounts of ground tire rubber through an Asphalt mixture performance tester (AMPT). This thesis specifically explores how different percentages of ground tire rubber (GTR) influence the mechanical properties and durability of the asphalt mixture articulated with two grades, PG 64-22 and PG 76-22. The experimental framework consisted of preparing asphalt mixtures blended with 10% to 15% of the binder for PG 64-22 and 3% to 8% of GTR for PG 76-22. The laboratory testing involved using …

Temporal Analysis Of Construction Safety Incidents In Southeastern U.S. Using Machine Learning Techniques, Mayowa O. Oladele

College of Graduate Studies: Theses & Dissertations

Construction safety incidents remain a significant concern, particularly in the Southeastern U.S. due to the high-risk nature of the industry. Analyzing patterns in these incidents can help improve safety practices and reduce accidents. Machine learning (ML) techniques were employed in this study to identify temporal patterns in construction safety incidents, aiming to enhance proactive safety management. The machine learning methods used in this research included logistic regression, decision trees, random forest, support vector machine (SVM), and K nearest neighbors (KNN).

The objective of the study was to analyze temporal trends in safety incidents and identify the most effective machine learningtechnique …

Comparative Analysis Of Lidar And Close-Range Photogrammetry Techniques For Inspection Of Mse Walls In Two Georgia Bridges, Md. Mehrab Hossain

College of Graduate Studies: Theses & Dissertations

Mechanically Stabilized Earth (MSE) retaining walls are durable, settlement tolerant, easy to install, and present cost-effectiveness, in highway bridges. Nevertheless, the cost of repairing MSE walls is high, and it is crucial to have an accurate, quantitative, and scalable inspection method for early detection of potential problems. This study aims to analyze and evaluate undesired displacements that may affect these walls over time. For this, two remote-sensing technologies are considered: Light Detection and Ranging (LiDAR) and 3D Close Range Photogrammetry (CRP). Their performances are compared against an accurate Robotic Total Station (RTS) device, serving as the benchmarking instrument. This work …

Evaluating The Effectiveness Of Lidar And Photogrammetry For Inspecting Mse Walls In Bridges, Shakil Ahmed

College of Graduate Studies: Theses & Dissertations

Mechanically Stabilized Earth (MSE) retaining walls are vital components of transportation infrastructure, providing structural support for embankments and bridge approaches. As many walls approach or exceed their design life, concerns regarding long-term stability, settlement, and displacement have increased. Traditional visual inspection remains the most common assessment method; however, it is subjective and often unable to detect subtle geometric changes that may precede structural distress or failure. This study evaluates Terrestrial LiDAR (Light Detection and Ranging) Scanning (TLS) and Close-Range Photogrammetry (CRP) as nondestructive, noncontact alternatives for detecting displacement in MSE retaining walls. Three representative sites were investigated: a Control Wall …

Individual Design Task Final Report Security Design, Ciarrah Bell

Honors Academy

"The Environmental Services Campus project is a comprehensive development designed to support the City of Springfield’s Environmental Services operations, with a focus on functionality, sustainability, and safety. The campus includes administrative office space, staff parking, a maintenance vehicle garage, and educational facilities aimed at community outreach. A component of the project is establishing site-wide security that not only protects personnel and assets but also integrates seamlessly with the architectural and environmental goals of the facility.

The primary focus of the Security IDT is the development and implementation of a comprehensive security strategy for the entire site. This includes designing and …

Reuse Of Calcium Carbonate (Caco3) Recovered From Discarded Carpets As Filler In Fiber-Reinforced Polymer (Frp) Composites, Roshan Devkota

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over four billion pounds of carpet are discarded annually in the United States, making carpet waste a significant environmental concern. Calcium carbonate (CaCo₃) constitutes up to 45% of the mass of most synthetic carpets. Reusing this CaCo₃ as a filler in the rapidly growing fiber-reinforced polymer (FRP) industry, which is projected to reach USD 10.38 billion, presents a low-cost, practical approach to developing a market-based solution to post-consumer carpet waste.

This study investigates the reuse of CaCo₃ recovered from discarded carpet backing as a filler in FRP composites, focusing on its mechanical viability in comparison to virgin CaCo₃. The methodology …

Leaning Pine Arboretum Gazebo, Carson C. Henry

Construction Management

The Leaning Pine Arboretum gazebo provides an aesthetic relaxation space for visitors to the arboretum as well as being a functional structure for faculty as a future event space. This gazebo replaces an existing one, revitalizing the space in conjunction with the arboretum’s planned growth over the coming years. There were many challenges throughout the construction process including permitting issues, design complexities, and coordination with architects and engineers. Persevering through these taught a great deal about project management, the construction industry, and the importance of teamwork. The structure is a total rejuvenation of the prior structure; it is now stronger, …

Developing A 4d Logistics Educational Module With Cmbuilder, Misael Gonzalez Ramirez

Construction Management

The increasing adoption of Building Information Modeling (BIM) in the construction industry has led to a need for its increasing integration into construction management education. While existing curriculum covers various BIM applications, there is often a gap in in-depth instruction on BIM-based site logistics planning. This paper details the development of an educational module designed to address this gap, focusing on 4D site logistics and phasing using cmBuilder. The module aims not only to provide students with technical software skills but also to equip them with practical skills in visualizing, planning, and communicating complex construction site logistics. Through a series …

Analyzing Reciprocating Piston Expander Performance In Small-Scale Caes Considering Expansion Mismatch And Residual Mass Losses, Mehrdad Poursadegh

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Energy storage (ES) has become an essential element of modern energy systems, particularly with the rapid growth of renewable energy sources. While these sources are central to global decarbonization efforts, their intermittent nature creates significant challenges for both grid operators and end users. To address these challenges, a wide range of storage technologies have been developed ranging from large utility-scale to small behind-the-meter units. Among these, Compressed Air Energy Storage (CAES) stands out for its long lifespan, low storage cost per unit of energy, and ability to provide both electricity and thermal energy. However, small- and micro-scale CAES systems, unlike …

Identifying Early Warning Signs Of Construction Labor Shortages, Ahmed Shiha, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Construction labor shortages constrain project-level objectives and national development plans. The goal of this study is to utilize the lagged effects of macroeconomic conditions as early warning signs of construction labor shortages. To this end, the authors adopted a methodology, encompassing (1) retrieval of publicly available data and preprocessing of construction labor shortage as the target variable and macroeconomic measures as the explanatory variables, (2) identification of short-term associations between shortages and economic cycles using the Granger causality test, (3) examination of long-term relationships between labor shortages and economic conditions using the Johansen cointegration test, and (4) estimation of the …

Forecasting State-Level Construction Labor Earnings For Enhanced Project Cost Control: An Econometric And Deep-Learning Analysis Of The Leading Economic Indicators, Ahmed Shiha, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

As a major input to several work packages, the labor element constitutes a critical component for successful performance of construction projects. Localized labor shortages, fundamental changes in prevailing wage laws, and historical shifts in the unionization rates of construction workers impair the adequate estimation of construction labor costs in diverse labor market dynamics. Meanwhile, existing studies have utilized national-level indicators to study the trends of construction labor costs, but the relationship between the multifaceted local economic factors and state-level construction labor costs remains understudied. This paper fills such a knowledge gap. A three-stage methodology is adopted: (1) data collection of …

Material Suppliers’ Perspective On Collaboration In Industrial Construction Projects, Seogjae Choi, William J. O'Brien

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Material suppliers' involvement in construction project planning has been recommended as an effective measure to improve project performance by using their expertise. However, the recommendation is not universal, and some researchers disputed the value of early involvement of suppliers depending on material type. Moreover, prior studies considered main contractors' and owners' perspectives mostly in examining how to increase the involvement of suppliers. To add material suppliers' perspective, this study conducted interviews with experienced professionals from 16 material suppliers including standardized, make-to-order, and custom products. The results are specified by separating the type of materials and sub-phases of planning. The results …