Browsing by Author "Schindler, Anton"

Now showing items 21-40 of 41

Evaluation of Lightweight Aggregate Concrete For Precast, Prestressed Driven Piles

Belk, Neill (2013-05-13)

Driven piles, specifically, precast, prestressed (PCPS) piles are concrete foundation elements used to transmit heavy structural loads and moments to an adequate bearing layer and reduce total settlement. ...

Evaluation of Methods to Assess the Strength of Soil Cement Base

McLaughlin, Justin (2017-07-28)

Soil cement is a mixture of soil, portland cement, and water that, once compacted and cured, forms a strong and durable pavement base. Construction practices and variance among core strength data have led to questions ...

Evaluation of Nondestructive Test Methods for Concrete Bridge Deck Condition Assessment

Coleman, Zachary (2021-07-14)

To facilitate locating subsurface concrete bridge deck defects and determining their corresponding severity, departments of transportation are switching to nondestructive test (NDT) methods. However, the difficulty in ...

Evaluation of Nondestructive Testing Methods to Assess the Condition of Concrete Bridge Decks

Jetzel, Christian (2021-08-02)

Bridges are critical parts of the transportation infrastructure in the United States and throughout the world. During their lifecycle, reinforced-concrete bridge decks can experience distresses and defects in the form of ...

Evaluation of Restraint Stresses and Cracking in Early-age Concrete with the Rigid Cracking Frame

Whigham, Jared (2005-08-15)

Early-age cracking problems are common in a wide variety of concrete structures, ranging from bridge decks and piers, to pavements used for highways and airport runways. Numerous surveys conducted by state and federal ...

Evaluation of Semi-Adiabatic Calorimetry to Quantify Concrete Setting

Weakley, Richard (2009-12-14)

Although setting is routinely measured in practice, current methods for determining concrete setting have been criticized for being impractical, arbitrary, and lacking correlation to field data. In recent years attempts ...

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 ...

An Evaluation of the Use of Self-Consolidating Concrete (SCC) for Drilled Shaft Applications

Bailey, Joseph (2005-08-15)

In drilled shaft construction, the recent development of sophisticated techniques for integrity and load testing has lead to the ability to assess the quality of drilled shaft foundations in terms of integrity and load ...

The Feasibility of Using Alternative Fuels to Produce Portland Cement

Thompson, Rutherford (2012-02-08)

The production of cement involves a combination of numerous raw materials, strictly monitored system processes, and temperatures on the order of 1500 °C. Immense quantities of fuel are required for the production of ...

Field Evaluation of Near-Surface Mounted, Fiber-Reinforced Polymer Strips for Strengthening of a Continuous Reinforced Concrete Bridge

Childs, William (2016-04-27)

The Letohatchee bridge is a continuous, reinforced concrete, deck-girder bridge maintained by the Alabama Department of Transportation (ALDOT) along AL 97 over I-65 near Letohatchee, Alabama. The bridge is deficient in ...

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 ...

Immediate Deflections of Simply Supported, Bonded, Class T and Class C Prestressed Concrete Beams

Hughes, Hayden (2023-04-17)

Design practice for prestressed members has moved toward allowing partially prestressed members, which are allowed to crack under service loads. To define design requirements, the ACI 318 Building Code explicitly defines ...

Mitigation of Alkali-Silica Reaction in the Bibb Graves Bridge

Warnock, Robert (2012-07-23)

The Bibb Graves Bridge in Wetumpka, AL has severe damage due to alkali-silica reaction (ASR) in two of its reinforced concrete arches. A mitigation procedure developed in the summer of 2010 by the FHWA, ALDOT, and ...

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 ...

Prediction of Creep and Shrinkage in the I-59/I-20 Segmental Bridge in Birmingham, Alabama

Beauchamp, Paul (2023-11-27)

The objective of this research is to accurately predict concrete creep and shrinkage in the I-59/I-20 segmental bridge in Birmingham, Alabama. Concrete samples were collected on four sampling dates throughout the bridge’s ...

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 ...

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 ...

Strength Assessment of Soil Cement Base in Alabama

Scales, Matthew (2020-07-30)

Soil cement is a mixture of soil, portland cement, and water that is compacted and cured to form a strong, durable pavement base. Variances among construction practices and core strength data have led to questions concerning ...

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 ...

Use of Optimized Aggregate Gradations and Dust-of-Fracture Mineral Filler for Concrete Applications

Harrigan, Christopher (2015-12-04)

Many proportioning methods exist to help the designer achieve a well-graded, or optimized aggregate gradation in the concrete industry, but not all are effective. The Shilstone Method and percent retained chart have been ...