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Full-Text Articles in Engineering

Factors Affecting Social Sustainability In Highway Projects In Missouri, Mohamed Abdel-Raheem, Charles Ramsbottom Dec 2016

Factors Affecting Social Sustainability In Highway Projects In Missouri, Mohamed Abdel-Raheem, Charles Ramsbottom

Civil Engineering Faculty Publications and Presentations

Sustainability focuses on the interaction between a given project and the social, environmental, and the economic dimensions of the system enclosing it. The majority of the studies conducted focused mostly on the environmental aspects of sustainability rather than the economic ones, while very few studies discussed the social dimension. Social sustainability promotes the concepts of respect, awareness, diversity, vitality, and responsibility toward the workforce and the society by keeping them healthy and safe from harm during the different phases of a project. Highway projects are one of the most critical infrastructure projects in the construction industry. This is due to …


Cost-Effectiveness Of Rubber And Polymer Modified Asphalt Mixtures As Related To Sustainable Fatigue Performance, Mena I. Souliman, Michael Mamlouk, Annie Eifert May 2016

Cost-Effectiveness Of Rubber And Polymer Modified Asphalt Mixtures As Related To Sustainable Fatigue Performance, Mena I. Souliman, Michael Mamlouk, Annie Eifert

Civil Engineering Faculty Publications and Presentations

Load associated fatigue cracking is one of the major distress types occurring in flexible pavements. Flexural bending beam fatigue laboratory test has been used for several decades and is considered an integral part of the Superpave advanced characterization procedure. One of the most significant solutions to sustain the fatigue life for an asphaltic mixture is to add sustainable materials such as rubber or polymers to the asphalt mixture. A laboratory testing program was performed on three gap-graded mixtures: unmodified, Asphalt Rubber (AR) and polymer-modified. Strain controlled fatigue tests were conducted according to the AASHTO T321 procedure. The results from the …


Impact Of Image Resolution On Pavement Distress Detection Using Picucha Methodology, Reus Salini, Bugao Xu, Mena I. Souliman Apr 2016

Impact Of Image Resolution On Pavement Distress Detection Using Picucha Methodology, Reus Salini, Bugao Xu, Mena I. Souliman

Civil Engineering Faculty Publications and Presentations

An accurate and regular survey of the road surface distresses is a key factor for pavement rehabilitation design and management, allowing public managers to maximize the value of the continuously limited budgets for road improvements and maintenance. Manual pavement distress surveys are labor-intensive, expensive and unsafe for highly-trafficked highways. Over the years, automated surveys using various hardware devices have been developed and improved for pavement field data collection to solve the problems associated with manual surveys. However, the reliable distress detection software and the data analysis remain challenging. This study focused on the analysis of a newly-developed pavement distress classification …


Mechanistic And Economical Characteristics Of Asphalt Rubber Mixtures, Mena I. Souliman, Annie Eifert Mar 2016

Mechanistic And Economical Characteristics Of Asphalt Rubber Mixtures, Mena I. Souliman, Annie Eifert

Civil Engineering Faculty Publications and Presentations

Load associated fatigue cracking is one of the major distress types occurring in flexible pavement systems. Flexural bending beam fatigue laboratory test has been used for several decades and is considered to be an integral part of the new superpave advanced characterization procedure. One of the most significant solutions to prolong the fatigue life for an asphaltic mixture is to utilize flexible materials as rubber. A laboratory testing program was performed on a conventional and Asphalt Rubber- (AR-) gap-graded mixtures to investigate the impact of added rubber on the mechanical, mechanistic, and economical attributes of asphaltic mixtures. Strain controlled fatigue …


A Framework To Utilize Shear Strength Properties For Evaluating Rutting Potentials Of Unbound Aggregate Materials, Issam Qamhia, Erol Tutumluer, Liang Chern Chow, Debakanta Mishra Jan 2016

A Framework To Utilize Shear Strength Properties For Evaluating Rutting Potentials Of Unbound Aggregate Materials, Issam Qamhia, Erol Tutumluer, Liang Chern Chow, Debakanta Mishra

Civil Engineering Faculty Publications and Presentations

This paper presents shear strength and permanent deformation trends of four unbound aggregate materials, commonly used for base and subbase layers in the state of North Carolina, USA, studied through repeated load triaxial testing, using the University of Illinois FastCell equipment. A testing and modeling framework has been established to develop a proper permanent deformation prediction model, referred to herein as the UIUC rutting model, with number of load applications. According to the framework, the unbound aggregate shear strength properties are incorporated into the model using the ratio of the applied wheel load shear stress to the mobilized shear strength, …


Impedance-Based Water-Quality Monitoring Using The Parallel-Plate Method, Ali Nazari, Arvin Farid, Ken Cornell Jan 2016

Impedance-Based Water-Quality Monitoring Using The Parallel-Plate Method, Ali Nazari, Arvin Farid, Ken Cornell

Civil Engineering Faculty Publications and Presentations

The application of electromagnetic (EM) waves to measure the electrical properties (dielectric constant and loss tangent) of materials is a well-known approach. The electrical properties can be used to indirectly measure several physical properties of solutions in water such as the concentration and chemical composition of contaminants in water, as a representative of the liquid phase in soil. A capacitive method of measuring dielectric properties of solutions is proposed to detect and determine low-concentration chemical and biological contaminations in water. The primary objective of this project is to design a low-cost sensor that would require small volumes of samples to …


Effect Of Fiber Reinforcement On Cbr Behavior Of Lime Blended Expansive Soils: Reliability Approach, Arif Ali Baig Moghal, B. Munwar Basha, Bhaskar Chittoori, Mosleh Ali Al-Shamrani Jan 2016

Effect Of Fiber Reinforcement On Cbr Behavior Of Lime Blended Expansive Soils: Reliability Approach, Arif Ali Baig Moghal, B. Munwar Basha, Bhaskar Chittoori, Mosleh Ali Al-Shamrani

Civil Engineering Faculty Publications and Presentations

Use of synthetic fibers as reinforcement to stabilize expansive soils is gaining momentum. As a contribution towards this growing field of research two different types of synthetic fibers, Fiber Mesh® and Fiber Cast®, were evaluated as a stabilization alternative for expansive soils in the presence of lime. California Bearing Ratio (CBR) is chosen as a performance indicator as it is a good pointer towards pavement effectiveness. Variables such as length and amount of the fibers as well as curing period were studied. Both deterministic and probabilistic (or reliability) analysis is presented in this paper. While the deterministic analysis helps in …


Performance Of Aggregate Subgrade Layers In Low Volume Roads Constructed With Unconventional Recycled Aggregates, Hasan Kazmee, Erol Tutumluer, Debakanta Mishra Jan 2016

Performance Of Aggregate Subgrade Layers In Low Volume Roads Constructed With Unconventional Recycled Aggregates, Hasan Kazmee, Erol Tutumluer, Debakanta Mishra

Civil Engineering Faculty Publications and Presentations

With transportation sector accounting for approximately 27% of total greenhouse gas emissions, transportation agencies all over United States have made sincere efforts to reduce such carbon footprint by incorporating more recycled materials in design mixes. In Illinois, recycled materials commonly include large sized unconventional aggregates used to stabilize weak subgrade soils that are abundantly found in wet of optimum conditions and prone to frost effects. To facilitate increased use of such “aggregate subgrade” materials, IDOT has recently introduced new gradation bands. However, performance of such recycled aggregate subgrade materials within the bounds of current design framework is largely unknown. To …


Numerical Model Water Quality For Hidalgo County, Texas; Main Drainage System, Jose Orvyl Gonzalez, Grimaldo Carrillo, Jungseok Ho Jan 2016

Numerical Model Water Quality For Hidalgo County, Texas; Main Drainage System, Jose Orvyl Gonzalez, Grimaldo Carrillo, Jungseok Ho

Civil Engineering Faculty Publications and Presentations

Increasing urbanization, water intake, and human water interaction of drainage canals of the Hidalgo County watershed seals the drainage basin and expands floodplains along the canal-side. Incremental use of drainage systems affects the amounts of nutrients that can cause an exposure to residues of agriculture chemicals, water related parasitic diseases, and fecal diseases. Proper water quality management is crucial for pollutant transport detection, estimation of non-point source discharge, and prediction of pollutant discharge at water endpoints. This research seeks to improve the understanding stormwater quality and quantity that is influenced by the frequency of human-water contacts and associated with treatment …