Construction Engineering and Management Commons^™

Examining The Effects Of Reducing The Cement Content Of Portland Cement Concrete Pavement, Bryan Casillas

Graduate Theses and Dissertations

Portland cement is a significant component in a concrete mixture. For concrete used in portland cement concrete pavement (PCCP), the Arkansas Department of Transportation (ARDOT) specifies a minimum cementitious material content of 564 lb/yd3 and a maximum water-cementitious material ratio of 0.45. Prior research conducted at the University of Arkansas, TRC 0603, indicated concrete mixtures used in five bridge decks throughout Arkansas achieved the required 28-day strength at seven days, and the measured compressive strength at 28 days was 30% greater than required. The use of high strength concrete in pavements throughout the state can increase cracking and consequently reduce …

Quantifying Workability, Compactability, And Cohesion Gain Of Asphalt Emulsion Cold In-Place Recycling, Sadie Casillas

Graduate Theses and Dissertations

To maximize the life and quality of a pavement, proper maintenance and rehabilitation are essential. Strategies for pavement rehabilitation with many sustainable benefits are pavement recycling. This dissertation focuses on two types of in-situ pavement recycling: Cold in-place recycling (CIR) stabilized with asphalt emulsion and full depth reclamation (FDR) stabilized with asphalt emulsion or foamed asphalt. One white paper (Chapter 2), two accepted peer reviewed journal articles (Chapters 3 and 4), and one submitted peer reviewed journal article (Chapter 5) are presented in this document to create better understanding of the unique material characterization of asphalt emulsion cold recycled materials, …

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 …

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 …

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 …

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' …

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 …

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.

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 …

Possible Solution To Housing Problem: Long Term Housing Investment Plan, Tucker Reed

Construction Management

The purpose of this paper is to provide young men and women entering the work force with the ability to invest towards acquiring a large plot of land to live on. In the current housing condition, Americans, more exactly those living in large urban populations are finding it difficult to find a permanent home in the same city as their workplace. This is particularly true for those whose professions require frequent relocation. The research conducted is meant to provide a person with little to no knowledge of construction with the conceptual understanding of the correct channels to purchase land and …

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 …

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 …

The Building Process Of An Affordable And Constructible Tiny House: Preconstruction Process, Alexis Canas

Construction Management

Tiny Houses have become a trend that promotes affordable and sustainable living. Although tiny houses have become a trend, there are still a lot of people who are unaware of the movement. There are people who want to create their own tiny home but do not know how to or where to begin. This paper discusses the preconstruction process of a tiny house to help the reader get a better understanding of what building a tiny home entails. The preconstruction services included are a BIM model of the design, Architectural and MEP plans, construction estimate, and a schedule. The preconstruction …

Bim Immersion Cube, Cory Krok

Construction Management

The construction industry has become one of the largest professions to struggle with effectively implementing technology. As the industry heads into the future, more and more technology will be needed to increase efficiency and reduce cost. Cal Poly, one of the leading universities for industry recruitment, needs to teach the new generation of builders to be able to implement BIM/VDC into the industry. In this project called the BIM Cube, the overall goal is to give Cal Poly students a better understanding of model coordination and clash detection. This paper outlines the preconstruction services required for the eventual construction of …

Feasibility Of Cross Laminated Timber Panels In Construction: A Case Study Of Carbon12, Erik John Graber

Construction Management

Cross Laminated Timber (CLT) is an extremely strong engineered wood panel intended for roof, floor, or wall applications. Currently there is little research comparing CLT to steel and concrete, materials CLT hopes to replace This research uses a detailed literary analysis on CLT and case study on Carbon12, a recently constructed CLT structure in Portland, Oregon, to compare the cost and schedule requirements of CLT with a cast-in-place concrete slab. The case study consisted of a detailed analysis of Carbon12, interview with Scott Noble, senior project manager for Carbon12, and a detailed schedule and cost analysis. Results showed that for …