Browsing by Department "Civil Engineering"
Now showing items 301-320 of 394
Predicting Field Performance on the NCAT Pavement Test Track
(2006-08-15)
An experimental facility has been constructed near the campus of Auburn University for the purpose of conducting research to extend the life of flexible pavements. Experimental sections on the 2.8 kilometer Pavement Test ...
Predicting Time-Dependent Deformations in Prestressed Concrete Girders
(2014-11-05)
A prestressed concrete girder camber prediction program, which utilizes a time-step approach, was improved to a new version including modifications, new features, and the fib Model Code 2010 material prediction model. The ...
A preliminary study on removing vanadium (V) from groundwater using Fe–Mn oxide nanoparticle with different stabilizers
(2018-11-16)
The Vanadium V5+ removal from water body and soil is an important issue for environmental protection and conservation. Nanoparticles as adsorption and the stabilizer against nanoaprticle aggregating have become the key ...
Preparation, Characterization, and Applications of Polysaccharide-stabilized Metal Nanoparticles for Remediation of Chlorinated Solvents in Soils and Groundwater
(2007-12-15)
Removal of chlorinated solvents in groundwater and soils represents one of the most challenging environmental issues. Highly reactive palladized iron (Fe-Pd) nanoparticles offer the potential to migrate in the soil and ...
Process Control Factors for Continuous Microbial Perchlorate Reduction in the Presence of Zero-Valent Iron
(2011-05-11)
Water is a staple of civilization, and in the event of drinking water contamination the use of the contaminant’s source should be discontinued. Alternatively, a technology that can remove the contaminant from the water ...
Proposed Improvements to Overlay Test for Determining Cracking Resistance of Asphalt Mixtures
(2014-04-25)
There is an increasing need in evaluating the cracking resistance of asphalt mixtures as more recycled materials are used in the mixes. A promising method that has been used to evaluate the mixture cracking resistance is ...
A Protocol to Assess the Impact of Crude Oil and Fuel Price Fluctuations on Future Asphalt Prices in the State of Alabama: A Stochastic Risk Assessment Approach
(2018-07-18)
Since the introduction of asphalt in the year 1870, it has become one of the main components of horizontal construction. According to the National Asphalt Paving Association (NAPA), asphalt covers approximately 94 percent ...
Qualifying the Saturated Hydraulic Conductivity and Corresponding Infiltration Processes
(2019-12-05)
Many engineering systems such as the hydraulic barriers and infiltration practices are designed based on the understanding of water infiltration through the subsurface. Among the soil hydraulic properties, the saturated ...
Quality Control, Sensitivity Analysis, and Development of Traffic Factors for Mechanistic-Empirical Pavement Design
(2013-11-15)
The Mechanistic-Empirical Pavement Design Guide (MEPDG) is well-recognized as the next generation of pavement design. State transportation agencies across the U.S. are moving toward this method by implementing the MEPDG ...
Quantifying Flow and Sediment Yield of an Ungauged Catchment using a Combination of Continuous Soil Moisture Accounting and Event-based Curve Number Method
(2017-08-17)
A serious aggradation problem has been identified in the Soapstone branch, a tributary to Little Choctawhatchee River. A study of historical aerial imageries shows deforestation of the catchment by a significant amount in ...
Quantifying Pavement Preservation Performance Using Probabilistic Deterioration Modeling
(2020-07-14)
Throughout the last few decades, the pavement industry has slowly transitioned from construction and rehabilitation to pavement preservation. Pavement preservation can be described as a proactive approach for protecting ...
Quantifying the Fatigue Damage Accumulation in Bridges
(2019-12-05)
Many of the existing bridges in the United States were built during the interstate era and are reaching the end of their life cycle. Traffic-induced loadings are one of the primary factors affecting the service and fatigue ...
Recalibration of the Asphalt Layer Coefficient
(2009-07-21)
The Alabama Department of Transportation (ALDOT) currently uses the 1993 DARWin version of the 1986 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Design of Pavement Structures ...
A Recursive Pseudo Fatigue Cracking Damage Model for Asphalt Pavements
(2018-07-24)
Bottom-up fatigue cracking in asphalt pavements is a complex distress mechanism influenced by traffic, structural and environmental conditions. Fatigue damage itself changes the properties of the asphalt concrete (AC), ...
Refining a Laboratory Procedure to Characterize Change in Hot-Mix Asphalt Surface Friction
(2010-12-15)
The surface of asphalt pavements gradually lose friction resistance as a result of changes in surface texture and aggregate polishing with repeated traffic application. The loss of pavement friction is a major safety ...
Relationship between Asphalt Binder Fatigue Properties and Mixture Fatigue Performance
(2018-07-25)
Fatigue cracking caused by repeated traffic loading is one of the major distresses in asphalt pavement. To control fatigue cracking, the current Superpave binder specification requires a maximum value of 5,000 kPa for the ...
Relationships Between Laboratory Measured Characteristics of HMA and Field Compactability
(2007-12-15)
Compactability of HMA mixtures is often used to describe how easy or difficult a mixture is to compact on a roadway. Several asphalt researchers have proposed laboratory measured parameters of mixtures and/or their ...
Reliability of Shear-Critical Reinforced Concrete Members
(2020-05-13)
Recent research on one-way shear strength and strut-and-tie design approach has led to updates in the ACI 318 Building code requirements for structural concrete. The changes in one-way shear design provisions in ACI 318-19 ...
Reliability-Based Calibration of the Code for Steel Girder Bridges
(2019-02-12)
Accurate evaluation and design of bridge structures can maximize the performance-to-cost ratio, which is one of the most critical aspects in infrastructure maintenance and expansion. The author of this dissertation presents ...
Removal and Immobilization of Arsenic in Water, Ion Exchange Brine, and Soil
(2010-12-07)
Removal of arsenic, As(III) and As(V), in water and soils is one of the most challenging environmental issues. Six polymeric ligand exchangers (PLEs) were synthesized by functionalizing various polymeric matrices (known ...