Construction Engineering and Management Commons^™

Verifying The Calcium Oxychloride Threshold In Cementitious Pastes, Fatoumata Traore

Graduate Theses and Dissertations

Calcium oxychloride (CAOXY) formation is a serious deterioration mechanism known to cause joint damage in concrete pavements. CAOXY is the product of a chemical reaction between calcium chloride (CaCl2) or magnesium chloride (MgCl) deicing salts and calcium hydroxide in the cementitious matrix. Currently, the accepted CAOXY threshold at which deterioration is mitigated in cementitious paste is 15 g/100 g paste (15 oz/100 oz paste); however, this limit was developed using flexural strength testing. For this investigation, the current threshold was evaluated using compressive strength and mass change over time in paste specimens exposed to CaCl2. Fly ash is used to …

Comparing The Effectiveness Of Osha-10 Online And In-Person Safety Courses: Case Study, Timothy R. Bartolomei

Construction Management

Since 1970, the Occupational Safety and Health Act (OSHA) was designed to create a safe workplace for everyone, has increased safety awareness, and decreased occurrences of injury and death on construction-related job sites. Until 2001, construction safety education was taught through face-to-face interaction between an instructor and an employee. However, in 2001, safety courses became available through multiple online platforms with the ability to be completed virtually. Online safety courses provide an alternative from face-to-face training and allow the employee to complete the training at their own pace. However, some research indicates that online safety courses are not as effective …

Case Study: Diesel-Powered Loaders Compared To Hybrid Loaders In Heavy Civil Construction, Jesus O. Pena

Construction Management

With the construction industry constantly changing, the environmental impacts of greenhouses gases have become a huge concern. Many contractors are adapting and switching over to hybrid powered systems to allow for more energy saving methods for heavy equipment, an increase in productivity, and efficient construction equipment that comply with emission regulations. The goal for this paper is to analyze the feasibility of heavy civil construction companies switching over from conventional diesel-powered wheel loaders to hybrid wheel loaders. Due to the competitive and saturated market in roadwork construction, many contractors have already begun to invest into hybrid systems. This provides cost …

Bs News July/August

Building Services Engineering

No abstract provided.

Project Risk Management In Malaysian Oil And Gas Industry: Implementation By Epc Local Contractor, Che Rosli Zaim Aiman

Student Works (2020-2029)

The megaproject in Downstream Sector of Oil and Gas Industry only achieve 50% success rate which warrants attention by researchers. The Owners and Contractors are not fully aware on the full range of project risks and only few have demonstrated the knowledge and expertise in managing risk effectively. The common understanding had by the EPC Contractor is they are having the full flexibility and freedom in performing execution work by maximizing profit while still complying towards client’s requirement as the contract price has been fixed during award stage. However, there is a hidden risk which seldomly being placed attention by …

The Critical Success Factors Of Cloud Based Application Implementation In Construction Management, Sukiman Mohd Asfahani

Student Works (2020-2029)

Design and construction are information intensive activities, involving a great number of people collaborating to produce complex, one-off developments. Whilst historically, information may have been managed and communicated using paper-based systems and verbal instructions, the integration of the supply chain, the introduction of computer aided design (CAD) and building information modelling (BIM) and the development of cloud computing application means that information communications technology (ICT) is becoming a fundamental part, not just of the design office, but also of the construction site. Cloud computing is a relatively new phenomenon in the construction industry. It allows the delivery over the 'cloud' …

The Study On The Use Of Project Success Framework Among Project Personnel, Suring Joshua

Student Works (2020-2029)

Projects, programs and portfolios are essential for human endeavors since time immemorial. However, project success rates in various sectors are dismal and not up to expectations. This research aims to investigate the use of a multilevel project success framework among project personnel in various sectors to identify essential success levels and criteria and determine any weaknesses and gaps for enhancing the framework. This is a qualitative study during which a conceptual framework was developed and tested with data gathered using a questionnaire survey with open-ended questions which was distributed to project personnel based on snowball sampling. A total of 52 …

Improving Client-Consultant-Contractor Communication In Construction Industry Through Whatsapp Application, Muhammad Hafizul Taib

Student Works (2020-2029)

A Smooth and effective communication is very important in construction industry to prevent iteration and rework which will cause money. Since there are a lot of parties involve in construction,it is important to have a good communication platform. In the current world, people are using the technology advancement to enhance the effectiveness of communication amongst people who work in construction industry. Though there are a lot of mobile application designed for construction purpose, WhatsApp is the most commonly used by all. However, there are no studies done to identify the effectiveness of it. This thesis will gather respond from client, …

Challenges In E-Tendering Implementation In Ministry Of Youth And Sports Malaysia, Azis Ahmad Zamie

Student Works (2020-2029)

The Ministry of Youth and Sport, like most ministries in Malaysia, tenders its projects through the traditional paper-based tendering process, which has many weaknesses, including bureaucracy and lack of transparency. In 2008, e-Tender was one of government incentive under e-Government application was introduced to replace manual tendering system in public agencies to systematic procurement which using internet as platform of transaction. Like any other transition project, implementation of e-tender in Ministry of Youth and Sport, is associated with several challenges. This research aims to explore the challenges facing the implementation of the e-tender system in the Ministry of Youth and …

Engineering Properties And Microstructural Characteristics Of Cement And Geopolymer Based Mortars Using Nontraditional Supplementary Cementitious Materials, Mathialagan Sumesh

Student Works (2020-2029)

The concrete repair and rehabilitation industry grows rapidly due to deterioration, damage and defects in concrete structures. For various reasons, the concrete construction industry is not sustainable; because it consumes huge quantities of virgin materials, the usage of Portland cement as prime binder. The production of cement is a major contributor to greenhouse gas emissions. In addition, the high cost of commercial repair material. Therefore, it is necessary to develop cost-effective alternative repair materials for concrete repairs. There have been many standard repair materials available in the market, which are costly and not affordable to common people. However, research works …

Automatic Delamination Segmentation For Bridge Deck Based On Encoder-Decoder Deep Learning Through Uav-Based Thermography, Chongsheng Cheng, Zhexiong Shang, Zhigang Shen

Department of Construction Engineering and Management: Faculty Publications

Concrete deck delamination often demonstrates strong variations in size, shape, and temperature distribution under the influences of outdoor weather conditions. The strong variations create challenges for pure analytical solutions in infrared image segmentation of delaminated areas. The recently developed supervised deep learning approach demonstrated the potentials in achieving automatic segmentation of RGB images. However, its effectiveness in segmenting thermal images remains under-explored. The main challenge lies in the development of specific models and the generation of a large range of labeled infrared images for training. To address this challenge, a customized deep learning model based on encoder-decoder architecture is proposed …

Evaluating Cracking Performance Of Polymer Enhanced And Fiber Reinforced Microsurface Mixtures Using Asphalt Laboratory Testing, George Joseph Shackil

Theses and Dissertations

This study presents a method to improve and evaluate the cracking resistance of microsurfacing mixtures using common asphalt laboratory testing. A preliminary optimal timing study and a study to evaluate improvements to cracking performance were conducted. The control mixture was based on NJDOT standard mix design specifications. Three mixtures were tested in this study: a fiber reinforced mixture using one-quarter inch glass fibers, an emulsion with increased SBR (polymer) contents, and a mixture using the one-quarter inch glass fibers combined with the increased polymer contents. Three laboratory tests were used to evaluate three different cracking resistance parameters: crack initiation (Semi-Circular …

Trades And Apprenticeship Survey 2020: Focus On Wet Trades, Roisin Murphy

Reports

CIF commissioned the Trades and Apprenticeship Survey 2020 – Focus on Wet Trades report to investigate the causes and implications of the low numbers entering wet trades (Bricklaying, floor and wall tiling, Painting and Decorating and Plastering). The objective for commissioning expert research was to fully understand whether the current model is appropriate for the sector or simply requires a new approach.

The research, carried out by Dr. Róisín Murphy, undertook a multi-stakeholder analysis, to determine the causes and challenges facing wet trades and apprenticeship in Ireland.

The report proposes six recommendations and addresses an Apprenticeship model review, Education and …

A Case Study On How Insulated Concrete Forms Can Prevent Structure Loss During Wildfires, Charles Myron Ackley

Construction Management

ICFs are a building material with unique thermal insulating and non-combustible properties that have shown great potential at protecting a structure during a wildfire. To prove the hypothesis that ICFs can effectively prevent structure damage or loss during a wildfire, an analytical case study on an ICF home that survived the Camp Fire was conducted. The goal was to understand how ICFs unique thermal insulating and non-combustible properties protect structures from wildfires and how this assembly system can be a lot more effective than a traditional frame structure. Additional objectives for the project included highlighting the growing threat of wildfires …

Contrasting Lifestyles In Commercial And Heavy Civil Construction, Michael Rios

Construction Management

The construction industry has different sectors that students can apply for when it comes to acquiring the chance for an internship or a full-time job. The two main sectors many students from the construction management department apply for are commercial construction and heavy civil construction. Information about each sector is provided in each lab, such as what type of projects each sector builds, the type of environment the project can be in and the magnitude in scale of each project. One thing that seems to be a high influence on which industry the students decide to work for is the …

Apple Homekit Application And Cost Breakdown, Nicholas E. Fifield

Construction Management

A principle part of the American dream is to own a home. The definition of an American home is constantly changing, and smart home technology gives more functionality and control over a person’s space. With devices updating constantly and with newer devices coming out every day, having an organized, well-connected smart home can define a person’s home. Apple’s HomeKit ecosystem gives users a single application interface to operate smart home technology for an entire, organized home opposed to other similar ecosystems without necessary functions run by other companies like Google or Amazon. Starting or remodeling a smart home can be …

Supply Chain Management: Fragmented Adoption In Practice, Tayler J. Yoshimura

Construction Management

Every day the construction industry develops new ideas and theories toward innovation in increased efficiency and quality for its projects. One method is supply chain management, which focuses on the relationships between partnerships along the supply chain. The theory was first developed in the manufacturing industry and this paper will highlight the reasons behind its fragmented adoption in the construction industry. The overall supply chain typically contains short supply chains that are dismissed upon project completion. Some companies have partially adopted the theory into their work practices but has been unable to fully adopt the theory as a whole. There …

The Effects Of Covid-19 On The Commercial Construction Industry In California: A Case Study, Emily G. Bohannon

Construction Management

As a result of the COVID-19 pandemic, construction companies across California have been forced to quickly adapt to new protocols and regulations. Since certain areas of California have been more impacted by the pandemic, construction companies in those counties have been forced to comply with stricter coronavirus guidelines. Between the regions researched in this case study, the Bay Area has been affected the most by COVID-19 shutdowns and regulations. Then, Los Angeles County and San Diego County, which faced similar restrictions. The least restrictive area to build during the pandemic is the Central Valley, where there were less reported cases. …

Wooden Bridge Demolition And Reconstruction, Josh Simon Rogers

Construction Management

The Conejo Recreation and Park District (CRPD) is a nonprofit city government organization that maintains the parks and hiking trails in Thousand Oaks, California. They were informed that one of the bridges at the Stagecoach Inn, a landmark park located in Thousand Oaks California, was old and sagging in a way that made interfered with the flow of the creek it spanned over. A plan to demolish the current bridge was created. Utilizing ArchiCAD and Microsoft Excel a design and an estimate were developed for a new bridge that would be built in its place. This bridge would be tall …

The Emma Family Backyard Deck – Thousand Oaks, Ca, Christopher Walter Farkas

Construction Management

This paper outlines the planning, design, and construction of an 80 square foot deck/outdoor patio. The main purpose of this project was to assist an elder couple fund and construct a new deck in their backyard. Due to the current world pandemic, COVID-19 the Emma Family was practicing social distancing and adhering to the State and County wide stay at home order. The project plan was to design a deck for Emma family in the design, construction it and receive funding. The deck was a rectangular 8’ x 10’ and raised 6” off the ground. In addition to the deck …