Browsing Auburn Theses and Dissertations by Author "Timm, David"

Now showing items 21-40 of 43

Evaluation of the Use of Reclaimed Asphalt Pavement in Stone Matrix Asphalt Mixtures

Vargas, Adriana (2007-12-15)

Mixtures that contain reclaimed asphalt pavement (RAP) can typically perform as well or better than conventional HMA mixes. However, use of RAP has generally not been extended to stone matrix asphalt (SMA) production. This ...

Evaluation, Local Calibration, and Validation of Performance Prediction Models in AASHTOWare Pavement ME Design Software Using NCAT Test Track Data

Guo, Xiaolong (2017-04-26)

The AASHTOWareTM Pavement ME Design software was adopted by the American Association of State Highway and Transportation Officials (AASHTO) for structural pavement designs. The performance prediction models in the software ...

Field-Based Strain Thresholds for Flexible Perpetual Pavement Design

Willis, James (2009-05-15)

In the recent years, there has been a push towards designing roadways which will sustain 50 years of trafficking without having any structural fatigue damage. These --Y´perpetual pavements¡ are designed using mechanisti ...

FULL-SCALE MECHANISTIC AND PERFORMANCE INVESTIGATION OF A FLEXIBLE PAVEMENT WITH A STABILIZED FOUNDATION

Nakhaei, Mostafa (2021-06-21)

The current study aimed to develop a mechanistic understanding of the behavior of flexible pavements with stabilized foundations through full-scale testing, instrumentation, and simulation. In pursuit of this objective, a ...

Insitu Measurement of Pavement Distress and Causal Mechanisms in Expansive Soil along Alabama Highway 5

Jackson, Dan (2016-12-07)

Alabama Highway 5 is a farm-to-market road built directly on an expansive clay subgrade. Moisture fluctuations cause the soil to shrink and swell, resulting in severe pavement distress. Laboratory testing has been performed ...

An Investigation into Dynamic Modulus of Hot-Mix Asphalt and Its Contributing Factors

Robbins, Mary (2009-04-16)

One of the key elements of mechanistic-empirical (M-E) flexible pavement design is the characterization of material properties. One material property in particular, the dynamic modulus of HMA, E*, influences tensile strain ...

Investigation of Deflection Basins to Identify Structural Distresses within Flexible Pavements

Vrtis, Michael (2017-04-21)

Cracking in pavements is often considered a random phenomenon that is difficult to predict and diagnose. It would be beneficial to pavement managers to identify pavements that are likely to have cracking in the near future ...

Laboratory and Field Characterization of Additive-Modified Asphalt Concrete Mixtures

Kmetz, Matthew (2023-11-27)

There is a need for a more rapid system of evaluation and implementation for new and existing asphalt additives, especially due to the prohibitive cost of full-scale performance evaluations. To help to meet this need, ...

Laboratory Refinement of 4.75 mm Superpave Designed Asphalt Mixtures

Rausch, David (2006-12-15)

In 2004 a pooled fund study was initiated to refine mix design criteria for 4.75mm NMAS Superpave designed mixes and field validate design criteria. Nine states were participants in this study, Alabama, Connecticut, Florida, ...

Mechanistic Characterization of Resilient Moduli for Unbound Pavement Layer Materials

Taylor, Adam (2008-08-15)

In recent years, there has been an industry shift in pavement design methodology from purely empirically based methods (e.g. The AASHTO Guide for the Design of Pavement Structures) to design methods that combine both ...

Moisture Content Monitoring using a Nuclear Moisture Gauge and Preliminary Findings at Alabama Highway 5

Jones, Dylan (2017-04-20)

Expansive soils cause damage to lightly loaded foundations and structures across the world. Alabama Highway 5 was built directly on an expansive clay soil. In past years it has experienced tremendous amounts of damage ...

A New Concept Design of Directional Rumble Strips for Deterring Wrong-way Freeway Entries

Yang, Lingling (2016-05-03)

Wrong-way driving (WWD) on freeways has been identified as a serious traffic safety problem. Drivers who make wrong-way entries onto freeways pose a serious risk to the safety of other motorists and themselves. This study ...

New Methods for Predicting Critical Tensile Strains in an M-E Framework

Robbins, Mary (2012-12-06)

As mechanistic-empirical pavement design comes to the forefront of design, the accurate prediction of critical tensile strains at the bottom of the asphalt concrete (AC) becomes increasingly more important to predict fatigue ...

Predicting Field Performance on the NCAT Pavement Test Track

Powell, Raymond (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 ...

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

Cardinal, Kaylyn (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 ...

Quantifying Pavement Preservation Performance Using Probabilistic Deterioration Modeling

Jalali, Farhang (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 ...

Recalibration of the Asphalt Layer Coefficient

Davis, Kendra Peters (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

Tutu, Kenneth (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), ...

Relationships Between Laboratory Measured Characteristics of HMA and Field Compactability

Leiva, Fabricio (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 ...

A Review of the Alabama Department of Transportation’s Policies and Procedures for Life-Cycle Cost Analysis for Pavement Type Selection

Musselman, Mark (2015-05-11)

This thesis examines the process of life-cycle cost analysis for pavement type selection and gives specific consideration to the policies and procedures used by the Alabama Department of Transportation as of June 2013. ...