A Review Of Different Aspects Of Applying Asphalt And Bituminous Mixes Under A Railway Track,
2020
University of Nevada, Las Vegas
A Review Of Different Aspects Of Applying Asphalt And Bituminous Mixes Under A Railway Track, Kazem Jadidi, Morteza Esmaeili, Mehdi Kalantari, Mehdi Khalili
Civil and Environmental Engineering and Construction Faculty Research
Asphalt is a common material that is used extensively for roadways. Furthermore, bituminous mixes have been used in railways, both as asphalt and as mortar. Different agencies and research institutes have investigated and suggested various applications. These studies indicate the benefits of bituminous material under railways, such as improving a substructure’s stiffness and bearing capacity; enhancing its dynamic characteristics and response, especially under high-speed train loads; waterproofing the subgrade; protecting the top layers against fine contamination. These potential applications can improve the overall track structure performance and lead to minimizing settlement under heavy loads. They can also guarantee an appropriate …
An Assessment Of Research Trends On Fiscal Policy,
2020
Prince Sultan University, Riyadh, Saudi Arabia
An Assessment Of Research Trends On Fiscal Policy, Shabir Hussain Khahro, Shoail Farooq, Tauha Hussain Ali Dr, Nafees Ahmed Memon Dr, Qasim Hussain Khahro
Library Philosophy and Practice (e-journal)
Fiscal policy has been a topic of research interest for researchers. It plays a very important role in the economic growth of any country. Fiscal policy does not only achieve economic development, but eliminates the hindrances that assist economic stability. Based on the significance of the term. This paper evaluates the research output of the term fiscal policy since 1970 in different fields using the Scopus database. The data was collected from the Scopus database and were analyzed using Microsoft Excel to analyze the research trends on fiscal policy. It is concluded that fiscal policy has been a topic of …
Expanding The Concept Of Comprehensive Area Ratio Parameter To The South-Central States Towards Simplifying The Structural Evaluation Of Flexible Pavements At The Network Level,
2020
University of Texas at Tyler
Expanding The Concept Of Comprehensive Area Ratio Parameter To The South-Central States Towards Simplifying The Structural Evaluation Of Flexible Pavements At The Network Level, Nitish R. Bastola
Civil Engineering Theses
The surface deflection bowl data collected through Non-Destructive Testing (NDT) has been widely utilized by various Department of Transportation (DOTs) in the South-Central States and other places. The primary purpose of using deflection-based NDTs in network-level assessment is to identify a weak pavement section that requires further analysis at the project level. The falling weight deflectometer (FWD) test is one of the common NDT based tests utilized by highway agencies in assessing the performance of the flexible pavement. However, a robust method to evaluate pavement sections utilizing FWD data from all the sensors are seldom developed. There is always a …
Laboratory Testing And Mechanistic Analysis Of Treated Subgrade Soils,
2020
University of Texas at Tyler
Laboratory Testing And Mechanistic Analysis Of Treated Subgrade Soils, Hari Kumar Reddy Yarrapureddi
Civil Engineering Theses
Calcium-based stabilizing agents such as cement and lime have been extensively used to improve the engineering properties of base and subgrade layers of pavement systems. Recently, polymers and chemical stabilizers have become popular due to cost efficiency, ease of application, and fast curing times. In this study, California Bearing Ratio (CBR) values of polymer and chemical treated soils were compared with the CBR values of soils treated with conventional stabilizers. Parametric sensitivity analyses was carried out on key parameters including the type of subgrade soil, stabilizing agent, stabilizing agent treatment levels, and moisture conditioning. Additionally, numerical analyses was performed to …
Bio-Binder—Innovative Asphalt Technology,
2020
Technological University Dublin
Bio-Binder—Innovative Asphalt Technology, Amir Tabakovic
Articles
The global road network spans 16.3 million km [1], of which 5 million km is in the EU. These road networks fulfil major economic and social goals by facilitating the movement of goods and people throughout the EU, and are therefore of the utmost importance to the economic and social life of the EU [2]. National governments invest heavily in their road networks, e.g., in 2014, EUR 53.33 billion was invested in the development and maintenance of the EU road network [3]. Each year, the world produces 1.6 trillion tonnes of asphalt [4], of which 218 million tonnes is produced …
Quality Control In Concrete Pavement: Early Detection Of Near-Surface Honeycombing With Gpr,
2020
University of Nebraska-Lincoln
Quality Control In Concrete Pavement: Early Detection Of Near-Surface Honeycombing With Gpr, Theresa Mccabe
Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research
This thesis presents utilization of Ground Penetrating Radar (GPR) for the assessment of highway pavements to gain a better understanding of this NDE method’s capabilities in terms of early detection of consolidation-caused air voids in brittle materials. The objectives are to first, determine the earliest time during the dormant, setting, and early hardening periods of concrete’s set that GPR can be used to detect shallow air voids. Secondly, the change in dielectric constant will be tracked over the first 24 hours of concrete setting in order to quantify the impact of the dielectric constant assumptions in early detection. Two different …
Benefits Of Pre-Construction Analysis: Cet Senior Capstone Expands Understanding Of An Urban Refuge At Gallopnyc Sunrise Stables,
2020
CUNY New York City College of Technology.
Benefits Of Pre-Construction Analysis: Cet Senior Capstone Expands Understanding Of An Urban Refuge At Gallopnyc Sunrise Stables, Aalaa Mohammed
Publications and Research
For any construction project, there exists a phase of planning known as “pre-construction.” This initial phase of the project provides a definition of the project, identification of potential issues, planning and scheduling, scope, cost estimation, and analysis of needs for the job. My research analyzes a pre-construction case study conducted for Gallop NYC’s Stable in Howard Beach, Queens. The findings suggest that the practice of construction planning is effective in order to avoid delays in construction itself and ensure successful project completion. Supporting literature examines some of the best practices for pre-construction analysis. These include but are not limited to: …
Cement Stabilized Crushed Stone Base Course Strength And Stiffness Analysis,
2020
University of Arkansas, Fayetteville
Cement Stabilized Crushed Stone Base Course Strength And Stiffness Analysis, Andrew Deschenes
Graduate Theses and Dissertations
Approximately 70 – 80% of state departments of transportations (DOTs) utilize the 1993 AASTHO Guide for Design of Pavement Structures (1993 AASHTO) [1] for structural design of pavements. A growing portion of DOT’s are beginning to implement the Mechanistic-Empirical Pavement Design Guide (MEPDG), referred to as AASHTOWare Pavement ME [2]. The 1993 AASHTO flexible guide applies empirically derived unitless strength values referred to as structural layer coefficients and structural numbers (SN) to pavement thickness and pavement types. The 1993 AASHTO rigid flexible guide utilizes the depth and strength of the concrete pavement, with the composite spring constant (kc), which is …
Seismic Loading Effects Within Orthogonally Connected Steel Lateral Force Resisting Systems,
2020
University of Arkansas, Fayetteville
Seismic Loading Effects Within Orthogonally Connected Steel Lateral Force Resisting Systems, Alhussin Faraj Aliwan
Graduate Theses and Dissertations
Steel buildings located within seismically active regions require special design considerations to ensure public safety and prevent collapse during an extreme seismic event. Two commonly used steel systems are special moment frames (SMFs) and buckling-restrained braced frames (BRBFs). When two seismic systems share a common column in an orthogonal configuration (such as at a building corner), design specifications currently consider a 100+30 rule wherein the shared column is designed for 100% fuse demand in one direction, plus 30% fuse demand from the other direction. While this rule has been shown to be reasonable for elastic building response, a few studies …
Using Bcsa Cement To Repair Waterway Transportation Structures,
2020
University of Arkansas, Fayetteville
Using Bcsa Cement To Repair Waterway Transportation Structures, Anazaria Johanis Ortega Gonzalez
Graduate Theses and Dissertations
Many maritime structures (e.g., locks, dams, ports) in the US are either reaching or are past their design lives, and there are limited funds for the necessary maintenance activities which can lead to repairs that requires closures. These structures are not easy to detour and often require dewatering before repairs can be made, closures can cause delays and business-related losses which can have a large effect on the nation’s economy. Thus, it is advantageous to reduce the repair time for maritime structures. BCSA (belitic calcium sulfoaluminate) cement is a promising material to perform this type of repair due to its …
Behavior Of Concrete Structures Reinforced With High Strength Steel,
2020
University of Arkansas, Fayetteville
Behavior Of Concrete Structures Reinforced With High Strength Steel, Rahman S. Kareem
Graduate Theses and Dissertations
The structural strength and corrosion resistance of concrete members are improved when A1035 steel is used as the main reinforcement. The enhancement of A1035 is achieved by the modification of the composition and microstructure of the steel. Therefore, the behavior of concrete structures reinforced with high-performance steel (A1035) is different from those reinforced with the regular steel (A615). Concrete bridge decks reinforced with different amounts of A1035 were studied in this research program. The structural behavior of twelve concrete bridge decks reinforced with A615 Grade 420 (60 ksi) and A1035 Grade 830 (120 ksi) steel was investigated at both service …
Improving Tolerance Control On Modular Construction Project With 3d Laser Scanning And Bim: A Case Study Of Removable Floodwall Project,
2020
North China University of Water Resources and Electric Power
Improving Tolerance Control On Modular Construction Project With 3d Laser Scanning And Bim: A Case Study Of Removable Floodwall Project, Huimin Li, Chengyi Zhang, Siyuan Song, Sevilay Demirkesen, Ruidong Chang
Faculty Publications
Quality control is essential to a successful modular construction project and should be enhanced throughout the project from design to construction and installation. The current methods for analyzing the assembly quality of a removable floodwall heavily rely on manual inspection and contact-type measurements, which are time-consuming and costly. This study presents a systematic and practical approach to improve quality control of the prefabricated modular construction projects by integrating building information modeling (BIM) with three-dimensional (3D) laser scanning technology. The study starts with a thorough literature review of current quality control methods in modular construction. Firstly, the critical quality control procedure …
The Feasibility Of Real Time Location Systems In Construction,
2020
California Polytechnic State University, San Luis Obispo
The Feasibility Of Real Time Location Systems In Construction, John O. Brouse Iv
Construction Management
The construction industry is becoming increasingly sophisticated by implementing new computer-based technologies to improve safety, efficiency, accountability, and many other aspects. One new type of technology that is becoming increasingly popular in other labor based industries is real time locating systems. These systems allow for managers to keep accountability of a variety of assets in a manufacturing facility or industrial center. Recent research has shown the benefits and potential uses of these systems on construction jobsites. This paper seeks to analyze the potential for Real Time Location Systems (RTLS) to be used on construction jobsites and compare the different RTLS …
Application Of Autonomous Equipment In Heavy Civil Construction,
2020
California Polytechnic State University, San Luis Obispo
Application Of Autonomous Equipment In Heavy Civil Construction, Roman J. Ruffino
Construction Management
The prevalence of autonomous vehicles in our everyday lives is continually growing. Automobile manufacturers such as Tesla have made great strides in building a car that can safely navigate the world around it and respond to sudden changes. There is great potential in the heavy civil construction industry for equipment such as bulldozers, scrapers, and transport vehicles to add another level of safety and efficiency to the worksite. The goal of this research will be to determine whether a contractor would actually apply this technology, or if it isn’t practical for everyday use. This paper will examine the current state …
The Discipleship Home Pergola And Firepit Area,
2020
California Polytechnic State University, San Luis Obispo
The Discipleship Home Pergola And Firepit Area, Andreas V. Rasmussen
Construction Management
This report illustrates the complete process of the implementation of an outdoor space consisting of a hardscaped firepit area covered by a pergola in the backyard of the Discipleship Home in Oceano, CA. This project was carried out by two construction management students, Andreas Rasmussen and Logan Smith. Logan Smith’s primary focus was the pergola while I was in charge of the hardscaping and natural gas firepit directly underneath the structure. The project was completed in December of 2020 with the use of quality materials purchased from local businesses and the help of local equipment rental store, Grover Tool & …
Users Background And Perception Of Robotic Demolition Equipment,
2020
California Polytechnic State University, San Luis Obispo
Users Background And Perception Of Robotic Demolition Equipment, Matthew Elston Jones
Construction Management
Robotic demolition equipment or demolition robots are robots that resemble excavators without the cab, that can be controlled by an operator at a safe distance. This equipment can access hazardous environments and provides versatility in the demolition methods possible. Robots have become a popular choice for contractors looking for a competitive advantage. Currently there is little research about the demolition robot market and how the industry views the technology. This research first seeks to answer background questions on the users and their experience with demolition robots. The research also answers perception questions such as the benefits, drawbacks, and reasons for …
Reintroduction Of Skilled Trade Programs For High School Students,
2020
California Polytechnic State University, San Luis Obispo
Reintroduction Of Skilled Trade Programs For High School Students, Cristian Ayala-Quirino
Construction Management
The curriculum that incorporated skilled trades has vanished from many high schools, and more students are encouraged to attend college instead of pursuing trades. People view construction labor positions as jobs instead of careers. The construction industry is facing a substantial labor shortage amongst skilled laborers throughout the whole industry. Not enough people know how beneficial a career in the construction labor force can be. If more people knew about these career opportunities, they might have a greater interest in pursuing a career as a skilled tradesperson. To comprehend students’ understanding of the construction industry and examine where we can …
Diversity And Inclusion In The Workplace: A Comparative Analysis Between A Large And Small Company,
2020
California Polytechnic State University, San Luis Obispo
Diversity And Inclusion In The Workplace: A Comparative Analysis Between A Large And Small Company, Andrew K. Hernandez
Construction Management
The construction industry in recent times have seen an increase in inclusivity and diversity among the workplace. The industry seems to make improvements and steps to create an overall accepting workforce. However, there is still a need to produce a more inclusive work environment. There are many organizations and legal requirements that push for improving diversity throughout companies, but still the industry struggles to do so. Improving diversity in the workforce can reach out to more personnel with talent and skill to possibly attack the trade labor shortage in this industry. Analytical research methods in these reports were used to …
Pre-Construction Documents For A Mobile Food Assembling & Distribution Station,
2020
California Polytechnic State University, San Luis Obispo
Pre-Construction Documents For A Mobile Food Assembling & Distribution Station, Winnie He
Construction Management
On Christmas Eve of 2018, Jessica He Liu, a chef in Los Angeles opened her home to friends and family to volunteer and help assemble food boxes and personal hygiene products and distributed these goods out to those in need. What started off as a goal to spread kindness during the holidays, became a yearly traditional non-profit volunteering event for those families involved. In March 2020, the deadly COVID-19 pandemic took the world by surprise, causing a copious amount of social distancing guild lines to be formed and enforced. Although there was still a slight hope that the pandemic would …
Should Teamwork-Based Content Be Taught In The Cal Poly Construction Management Curriculum?,
2020
California Polytechnic State University, San Luis Obispo
Should Teamwork-Based Content Be Taught In The Cal Poly Construction Management Curriculum?, Matthew J. Sharman
Construction Management
At California Polytechnic State University, San Luis Obispo (Cal Poly), in the Construction Management (CM) curriculum, there is a lack of teamwork-based content. This content includes negotiation, conflict resolution, and fundamental skills for working collaboratively with others such as social-emotional intelligence, empathy, and communication. The nature of the Cal Poly CM Program is to teach students about the aspects of the construction process, however what is missed is teaching how to work effectively in teams. They fail to teach this because of the strict curriculum of focusing on learning objectives rather than teaching individuals how to be effective construction managers. …
