Browsing by Author "Hughes, Mary"

Now showing items 21-36 of 36

Evaluation of the Maturity Method to Estimate Concrete Strength

Wade, Samuel (2005-12-15)

The strength of a newly constructed concrete structure or roadway is critically important to contractors and engineers who must decide when to safely allow construction loads, prestressing operations, or opening to traffic ...

Evaluation of the Maturity Method to Estimate Concrete Strength in Field Applications

Nixon, Jeffrey (2006-05-15)

Estimating the strength of concrete is essential to contractors and engineers to allow concrete construction operations to proceed safely and expediently. The maturity method is a technique that allows the in-place concrete ...

Finite Element Modeling of Skewed Reinforced Concrete Bridges and the Bond-slip Relationship Between Concrete and Reinforcement

Li, Xin (2007-12-15)

A bridge deck on US 331 near Montgomery, AL developed transverse and longitudinal cracking a few months after construction was completed. A refined finite element model of this continuous, skewed, composite bridge was ...

Finite-Element Modeling of a Damaged Prestressed Concrete Bridge

Shapiro, Kelli (2007-05-15)

Spans 10 and 11 of the Interstate Highway 565 bridge structure in Huntsville, Alabama were noticed to be cracked shortly after their construction. Alabama Department of Transportation (ALDOT) employees investigated and ...

Impact of Vertical Ground Motion on Seismic Response of Steel Frame Structures

Wu, Hongyang (2016-02-05)

It is a well-known fact that all earthquakes have three orthogonal components of acceleration including two horizontal and one vertical acceleration. Current design practice for design of structures in United States only ...

Nondestructive Evaluation of Prestressed Concrete Structures by Means of Acoustic Emissions Monitoring

Xu, Jian Gong (2008-12-15)

The acoustic emission (AE) technique has been found to be an informative nondestructive testing (NDT) method for evaluation of structures constructed with certain materials. While AE evaluation procedures and evaluation ...

The Origins and Use of Various Code Specifications and Design Guides for Concrete Slabs-on-Ground in Hangar Applications

Morgan, Ciara (2018-12-13)

Research focused on the origins and applications of various code specifications and design guides used in the design of concrete slabs-on-ground in airplane hangar foundations. This thesis investigates the mathematical ...

Quantifying the Fatigue Damage Accumulation in Bridges

Ramesh Babu, Anjan Mogali (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 ...

Resistance of Multi-Wythe Insulated Masonry Walls Subjected to Impulse Loads

Browning, Robert (2008-12-15)

The overall objective of this project was to define the dynamic flexural resistance of multi-wythe insulated masonry walls with specific emphasis placed on determining the potential application of foam insulation as a ...

Shear Strengths of End Regions of Prestressed Self-Consolidating Concrete Beams

Gurbuz, Mustafa (2008-05-15)

Understanding of the shear and bond performance of self-consolidating concrete (SCC) is vital to fully implement SCC usage in structures. State highway structures are a potential application for prestressed SCC systems ...

Stability of Highway Bridges Subject to Scour

Walker, James (2008-12-15)

A common design/construction procedure for highway bridges in Alabama is the use of steel HP piles driven into a firm stratum with a length above ground/water up to the level of a concrete bent cap which supports the bridge ...

Stability of Timber Bridges Subject to Scour

Schambeau, Mary (2012-07-25)

Because scour is responsible for most disastrous bridge failures, bridge scour monitoring is necessary for the safety of public roads. While much attention is paid to the amount of bridge scour at a foundation, the ...

Static Load Testing of a Damaged, Continuous Prestressed Concrete Bridge

Fason, William (2009-05-15)

Shortly after the completion of interstate highway I-565 in Huntsville, Alabama, cracks were discovered in the continuous end of many of the prestressed concrete bulb-tee girders. Alabama Department of Transportation ...

Structural Performance of Self-Consolidating Concrete in AASHTO Type I Prestressed Girders

Boehm, Kurtis (2008-08-15)

As part of a larger investigation sponsored by the Alabama Department of Transportation (ALDOT) into the use of self-consolidating concrete (SCC) in bridge girders, this thesis documents a structural investigation of SCC ...

Transfer Length in Prestessed Self-Consolidating Concrete

Swords, Jesse (2005-12-15)

Over the years much research into the transfer lengths of prestressed beams cast with conventional-slump concrete has been performed, but very little has been done in regard to beams cast with self-consolidating concrete ...

The Utilization of Alternative Fuels in the Production of Portland Cement

Swart, Dustin (2007-08-15)

The production of portland cement converts many different raw materials into clinker, in the presence of temperatures on the order of 1,500 degrees Celsius. Historically, nonrenewable fossil fuels have been used to maintain ...