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- Keyword
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- 1999 Kocaeli Earthquake (1)
- 2011 Van Earthquake (1)
- ABAQUS; Characterization; Dynamic loads; Elasticity; Finite element method; Hot rolling; Pavements; Sensitivity analysis (1)
- Aggregate gradation (1)
- Asphalt; Characterization; Cost benefit analysis; Cost effectiveness; Costs; Fatigue of materials; Fatigue testing; Mixtures; Polymers; Software testing; Sustainable development (1)
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- Axle loading (1)
- Climate extremes (1)
- Copper (1)
- Copper deposits (1)
- Copper mines (1)
- Copula (1)
- Dams (1)
- Dependence analysis (1)
- Disaster Management. (1)
- Drought (1)
- Embankment dams (1)
- Expansive soils (1)
- Expert system (1)
- Fatigue Cracking (1)
- Faulting (1)
- Fiber (1)
- Flood frequency (1)
- Flood response coordination (1)
- Flood response management (1)
- Flood response training (1)
- Heatwaves (1)
- Jointed Plain Concrete Pavement (JPCP) (1)
- Knowledge management (1)
- Lime (1)
- MCMC (1)
Articles 1 - 14 of 14
Full-Text Articles in Engineering
Prediction Of Average Annual Surface Temperature For Both Flexible And Rigid Pavements, Karthikeyan Loganathan, Mena I. Souliman
Prediction Of Average Annual Surface Temperature For Both Flexible And Rigid Pavements, Karthikeyan Loganathan, Mena I. Souliman
Civil Engineering Faculty Publications and Presentations
The surface temperature of pavements is a critical attribute during pavement design. Surface temperature must be measured at locations of interest based on time-consuming field tests. The key idea of this study is to develop a temperature profile model to predict the surface temperature of flexible and rigid pavements based on weather parameters. Determination of surface temperature with traditional techniques and sensors are replaced by a newly developed method. The method includes the development of a regression model to predict the average annual surface temperature based on weather parameters such as ambient air temperature, relative humidity, wind speed, and precipitation. …
Dense-Graded Aggregate Base Gradation Influencing Rutting Model Predictions, Issam I. A. Qamhia, Liang Chern Chow, Debakanta Mishra, Erol Tutumluer
Dense-Graded Aggregate Base Gradation Influencing Rutting Model Predictions, Issam I. A. Qamhia, Liang Chern Chow, Debakanta Mishra, Erol Tutumluer
Civil Engineering Faculty Publications and Presentations
This paper presents findings from an ongoing research study at the University of Illinois focused on developing and calibrating an improved permanent deformation model for unbound aggregate materials through laboratory testing and characterization. The project scope included testing sixteen aggregate materials, commonly used in the state of North Carolina for pavement base courses, in the laboratory through monotonic and repeated load triaxial testing. This paper primarily focuses on quantifying effects of aggregate gradation on permanent deformation behavior. To accomplish this, four materials were tested at both: (1) “source gradations,” i.e. original gradations from quarry, and (2) an “engineered gradation,” i.e., …
Mechanical And Economical Impacts Of Adding Polymers Into Asphalt Mixtures, Mena Souliman, Waleed Zeiada, Lubinda Walubita
Mechanical And Economical Impacts Of Adding Polymers Into Asphalt Mixtures, Mena Souliman, Waleed Zeiada, Lubinda Walubita
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 polymers to the asphalt mixture. A laboratory testing program was performed on two gap-graded mixtures: unmodified and polymer-modified asphalt mixtures. Strain controlled fatigue tests were conducted according to the AASHTO T321 procedure. The results from the beam fatigue tests …
An Expert System For Local Flood Response Coordination And Training, Xiaoyin Zhang, Gary Moynihan, Andrew Ernest, Joseph Gutenson
An Expert System For Local Flood Response Coordination And Training, Xiaoyin Zhang, Gary Moynihan, Andrew Ernest, Joseph Gutenson
Civil Engineering Faculty Publications and Presentations
Flood response is an essential component of flood management to rescue people, reduce property loss, and limit the impact to the environment. Effective flood response depends on a sound coordination structure with unified responsibilities, smooth communications, and scalable response plans. An efficient coordination system, including command and management structures, is built on a thorough understanding of the responsibilities and actions of each role for delivering the response core capabilities. Collecting, sharing, using, and handling the knowledge require great efforts in knowledge management. To further enhance such efforts, an expert system for local flood response coordination and training (LFRS) was developed …
Increasing Probability Of Mass-Mortality During Indian Heatwaves, Mojtaba Sadegh
Increasing Probability Of Mass-Mortality During Indian Heatwaves, Mojtaba Sadegh
Civil Engineering Faculty Publications and Presentations
Rising global temperatures are causing increases in the frequency and severity of extreme climatic events such as floods, droughts, and heatwaves. Here, we analyze changes in summer temperatures, the frequency, severity and duration of heatwaves, and heat-related mortality in India between 1960 and 2009, using data from the India Meteorological Department. Mean temperatures across India have risen by more than 0.5 °C over this period, with statistically significant increases in heatwaves. Using a novel probabilistic model, we further show that the increase in summer mean temperatures in India over this period corresponds to a 146% increase in the probability of …
Multivariate Copula Analysis Toolbox (Mvcat): Describing Dependence And Underlying Uncertainty Using A Bayesian Framework, Mojtaba Sadegh, Elisa Ragno, Amir Aghakouchak
Multivariate Copula Analysis Toolbox (Mvcat): Describing Dependence And Underlying Uncertainty Using A Bayesian Framework, Mojtaba Sadegh, Elisa Ragno, Amir Aghakouchak
Civil Engineering Faculty Publications and Presentations
We present a newly developed Multivariate Copula Analysis Toolbox (MvCAT) which includes a wide range of copula families with different levels of complexity. MvCAT employs a Bayesian framework with a residual-based Gaussian likelihood function for inferring copula parameters and estimating the underlying uncertainties. The contribution of this paper is threefold: (a) providing a Bayesian framework to approximate the predictive uncertainties of fitted copulas, (b) introducing a hybrid-evolution Markov Chain Monte Carlo (MCMC) approach designed for numerical estimation of the posterior distribution of copula parameters, and (c) enabling the community to explore a wide range of copulas and evaluate them relative …
Target Reliability Approach To Study The Effect Of Fiber Reinforcement On Ucs Behavior Of Lime Treated Semi-Arid Soil, Arif Ali Baig Moghal, Bhaskar C.S. Chittoori, B. Munwar Basha, Mosleh Ali Al-Shamrani
Target Reliability Approach To Study The Effect Of Fiber Reinforcement On Ucs Behavior Of Lime Treated Semi-Arid Soil, Arif Ali Baig Moghal, Bhaskar C.S. Chittoori, B. Munwar Basha, Mosleh Ali Al-Shamrani
Civil Engineering Faculty Publications and Presentations
This paper evaluates the effectiveness of stabilizing expansive soil with two different types of fibers, Fiber Mesh® (FM) and Fiber Cast® (FC), in conjunction with chemical stabilization. The intention of this study is to evaluate the effect of these fibers and lime in stabilizing expansive soil by improving its UCS behavior. The effect of varying lengths (6 mm and 12 mm) and amounts (0.2, 0.4 and 0.6% dosage by weight of soil) of FC and FM fibers and curing periods (0, 7, 28, 60, 120, 180 and 360 days) on the UCS and on secant modulus of a semi-arid expansive …
Effects Of Tire Inclination (Turning Traffic) And Dynamic Loading On The Pavement Stress-Strain Responses Using 3-D Finite Element Modeling, Xiaodi Hu, Abu N.M. Faruk, Jun Zhang, Mena I. Souliman, Lubinda F. Walubita
Effects Of Tire Inclination (Turning Traffic) And Dynamic Loading On The Pavement Stress-Strain Responses Using 3-D Finite Element Modeling, Xiaodi Hu, Abu N.M. Faruk, Jun Zhang, Mena I. Souliman, Lubinda F. Walubita
Civil Engineering Faculty Publications and Presentations
In this study, ABAQUS finite element (FE) modeling in three-dimensional (3-D) loading mode was utilized to analytically investigate and quantify the effects of tire inclination and dynamic loading on the stress-strain responses of a pavement structure under varying loading and environmental conditions. The input variables for modeling consisted of actual laboratory and field data obtained from an in-service highway US 59 and included the in-situ pavement structure, material properties (i.e., modulus and shear strength), traffic, and climatic (i.e., temperature) data. Computational modeling and sensitivity analyses were conducted through variation of the following two input variables with a focus on the …
A Mechanistic-Empirical Impact Analysis Of Different Truck Configurations On A Jointed Plain Concrete Pavement (Jpcp), Lubinda F. Walubita, Tito P. Nyamuhokya, Stefan A. Romanoschi, Xiaodi Hu, Mena I. Souliman
A Mechanistic-Empirical Impact Analysis Of Different Truck Configurations On A Jointed Plain Concrete Pavement (Jpcp), Lubinda F. Walubita, Tito P. Nyamuhokya, Stefan A. Romanoschi, Xiaodi Hu, Mena I. Souliman
Civil Engineering Faculty Publications and Presentations
Until the last decade, the 1993 American Association of State Highway and Transportation Officials (AASHTO) design guide has been traditionally used for the design of flexible and rigid pavements in the USA and some parts of the world. However, because of its inability to meet the new traffic and material challenges, a Mechanistic Empirical Pavement Design Guide (MEPDG) was introduced based on an NCHRP 1-37 A study conducted in 2004. This study used the MEPDG software and associated models to determine, through comparative truck damage analysis, the effects of nine different truck configurations on a 12 inch-jointed plain concrete pavement …
Optimizing Fiber Parameters Coupled With Chemical Treatment: Promethee Approach, Arif Ali Baig Moghal, Ateekh Ur Rehman, Bhaskar Chittoori
Optimizing Fiber Parameters Coupled With Chemical Treatment: Promethee Approach, Arif Ali Baig Moghal, Ateekh Ur Rehman, Bhaskar Chittoori
Civil Engineering Faculty Publications and Presentations
In order to combat issues related to expansive soils, chemical stabilization augmented with use of synthetic fibers is gaining focus in recent times. However, in most of these applications, the practicing field engineers face difficulty in selecting the right mix of fiber size, fiber dosage and stabilizer content. The decision becomes more typical, as the target is to achieve or enhance multiple geotechnical properties which differ with fiber dosage and stabilizer content based on governing mechanisms. Addressing these issues, in this study an attempt is made to present an approach for selecting fibre dosage and lime mix for a typical …
Concrete Pavement Service Condition Assessment Using Infrared Thermography, Yang Lu, Aidin J. Golrokh, M.D. Aminul Islam
Concrete Pavement Service Condition Assessment Using Infrared Thermography, Yang Lu, Aidin J. Golrokh, M.D. Aminul Islam
Civil Engineering Faculty Publications and Presentations
Infrared thermography (IRT), an effective nondestructive testing method, is used to obtain an initial evaluation of the concrete pavement surface and near surface in a time effective manner. In this paper, the effect of the depth of delamination inside concrete pavement on infrared thermography technique is studied for bridge decks inspection. To be able to mimic the delamination in subsurface, two Styrofoam cubes have been inserted in different depth near the surface of the concrete cylinder. After heating up the specimen, thermal images were taken from the surface using an infrared thermal camera to evaluate the effect of subsurface defects …
Geotechnical Evaluations Of A Tailings Dam For Use By A Molybdenum And Copper Mine Project In Southern Idaho, Thomas Robbins, Bhaskar C.S. Chittoori
Geotechnical Evaluations Of A Tailings Dam For Use By A Molybdenum And Copper Mine Project In Southern Idaho, Thomas Robbins, Bhaskar C.S. Chittoori
Civil Engineering Faculty Publications and Presentations
A proposed mining project in Boise County, Idaho for the extraction of copper, molybdenum, and silver deposits, required investigations into a possible tailings dam construction that will be built using the processed material from the mine. The mine is located southwest of Lowman Idaho, northeast of Pioneerville Idaho, and directly north of Jackson Peak Mountain. The total area for the proposed project is approximately 12 square kilometers and the estimated material to be excavated is about 1.99 billion cubic meters (BCM) (USDA 2013). Typical investigations into the construction of a tailings dam consist of identifying the types of ore contained …
Evaluating The Ability Of Swell Prediction Models To Predict The Swell Behavior Of Excessively High Plastic Soils, Bhaskar Chittoori, Mir Md. Tamim, Amit Gajurel, Deb Mishra
Evaluating The Ability Of Swell Prediction Models To Predict The Swell Behavior Of Excessively High Plastic Soils, Bhaskar Chittoori, Mir Md. Tamim, Amit Gajurel, Deb Mishra
Civil Engineering Faculty Publications and Presentations
Lightly loaded structures underneath expansive soils encounter severe damage due to the swell/shrink nature of expansive soils resulting from moisture variations. Billions of dollars are spent every year to repair the damages caused by these soils in the U.S. and worldwide. Designing structures to accommodate the swelling strains is a major challenge as predicting the swelling potential of these soils accurately is not easy. A wide variety of swell prediction models have been introduced by various researchers to predict the behavior of these often-problematic expansive soils. These models include various properties of soils such as, plasticity characteristics, compaction conditions, consolidation …
Development Of Disaster Management In Turkey: From 1999 Kocaeli Earthquake To 2011 Van Earthquake, Mert Tolon, Kağan Cenk Mızrak
Development Of Disaster Management In Turkey: From 1999 Kocaeli Earthquake To 2011 Van Earthquake, Mert Tolon, Kağan Cenk Mızrak
Civil Engineering Faculty Publications and Presentations
The natural disasters that have occurred in Turkey are categorized as % 61 earthquakes, followed by landslides, floods, rock falls, fires and storms. Between the years of 1903 and 2000, there have been nearly 150 earthquakes in Turkey which led to damage and this is a challenge for Turkey. The management and plans of these natural disasters in Turkey were first developed in 1959. In 1999, with the magnitude of 7.4, The Kocaeli and Duzce earthquakes affected a region of Turkey that constitutes % 23 of the country’s population. After that, in 2000 necessary laws have been prepared and enacted. …