Browsing by Author "Barnes, Robert W."

Now showing items 1-20 of 23

Bond Behavior of Prestressed Reinforcement in Beams Constructed with Self-Consolidating Concrete

Levy, Kelly (2007-05-15)

Accurate behavioral characteristics of self-consolidating concrete (SCC) should be established prior to its widespread implementation in prestressed members. This thesis describes an investigation of bond behavior of ...

Catenary Action in Steel Framed Structures with Autoclaved Aerated Concrete Infill & Buckling Restrained Braces

Eletrabi, Haitham (2014-12-04)

The progressive collapse of structures is considered a major concern for designers since the Ronan Point incident. Preventing and mitigating progressive collapse has become a serious issue for all types of buildings. ...

Compressive Strength and Modulus of Elasticity Relationships for Alabama Prestressed Concrete Bridge Girders

Hofrichter, Andric (2014-07-09)

The state of Alabama constructs many of its bridges using precast, prestressed concrete bridge girders. There is a desire to more accurately predict girder cambers through the time of deck placement. Proper understanding ...

Connection Demand Prediction for the Design of Precast Concrete Wall Panels Subjected to Blast Loads

Consunji, Anthony (2015-01-09)

One challenge in design of structures for highly impulsive loading is accurately predicting the peak transient shear and the corresponding connection force demand at supports. Single-degree-of-freedom (SDOF) approaches ...

Early-age cracking of mass concrete structures

Meadows, Jason (2007-05-15)

Early-age cracking is a recurring problem in many mass concrete structures. Currently agencies tend only to limit the maximum temperature difference that may develop in a mass concrete structure in an attempt to mitigate ...

Effect of Core Geometry and Size on Concrete Compressive Strength

Carroll, Adam (2014-11-06)

To evaluate the in-place concrete strength for acceptance for a structural member with potentially substandard strength, the compressive strength of cores may be required for assessment. Depending on the geometry and size ...

Effectiveness of Silane in Mitigating Alkali-Silica Reaction in the Bibb Graves Bridge

Johnson, Darren (2013-11-11)

The Bibb Graves Bridge is in Wetumpka, Alabama, and it has severe damage caused by alkali-silica reaction (ASR) in two of its fourteen reinforced concrete arches. A silane-based, ASR mitigation procedure was developed and ...

Evaluation of In-Place Concrete Strength by Core Testing

Grubbs, Aaron (2014-12-16)

When the average compressive strength of molded cylinder specimens do not meet the minimum required strength for a batch of concrete, testing must be performed on the in-place concrete to evaluate its strength. There are ...

Evaluation of Self-Consolidating Concrete for Use in Prestressed Girder Applications

Roberts, James (2005-12-15)

Self-consolidating concrete (SCC) is a highly flowable, yet cohesive, concrete that is able to fill formwork and completely encapsulate any reinforcement without the need for external vibration. The use of SCC may help ...

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 ...

Fiber-Reinforced Polymer Strengthening of War Memorial Bridge—Installation, Load Testing, and Analysis

Carmichael, Benjamin (2005-12-15)

An assessment of the rehabilitation of a reinforced-concrete bridge using carbon fiber reinforced polymer (FRP) laminate materials is presented. The installation of FRP strips to girder bottoms in the positive moment section ...

Finite Element Simulation of Precast/Prestressed Insulated Sandwich Panels Optimized for Construction of Government Facilities

Nickerson, Joseph (2014-05-02)

This report discusses the development of finite element modeling methodologies for the static and dynamic response of insulated sandwich panels to uniform pressure loads. Experimental testing, which included solid panel ...

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 ...

Full-Scale Implementation and Testing of Non-Prestressed Full-Depth Precast Bridge Deck Panels with Continuous Shear Pockets

Mante, David M. (2012-08-16)

The Alabama Department of Transportation (ALDOT) currently has over three miles of major interstate bridges near downtown Birmingham involving approximately 600,000 square feet of deck area with significant levels of ...