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Factors Affecting Arsenic Mobilization in Experimental Subsurface Systems
(2008-09-09)
Elevated concentrations of arsenic (As) in groundwater is a widespread problem
that affects millions of people around the world. Other than the adverse affects on human
health, this problem often raises economic, social ...
A Sensitivity Analysis of the Mobility-Related Benefits of the Alabama Service and Assistance Patrol
(2008-09-09)
The Alabama Service and Assistance Patrol (ASAP) was developed by the Alabama Department of Transportation in an attempt to reduce non-recurring congestion in the Birmingham region of Alabama. This Freeway Service Patrol ...
Finite Element Modeling of Skewed Reinforced Concrete Bridges and the Bond-slip Relationship Between Concrete and Reinforcement
(2008-09-09)
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 ...
Evaluation of the Maturity Method to Estimate Concrete Strength in Field Applications
(2008-09-09)
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 ...
Evaluation of Restraint Stresses and Cracking in Early-age Concrete with the Rigid Cracking Frame
(2008-09-09)
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 ...
Verification of the Superpave Gyratory Ndesign Compaction Levels
(2008-09-09)
The original Superpave Ndesign table contained 28 levels based on a limited laboratory experiment. This was later consolidated to 4 levels based on the sensitivity of mixture volumetric properties to Ndesign; however, ...
Preparation, Characterization, and Applications of Polysaccharide-stabilized Metal Nanoparticles for Remediation of Chlorinated Solvents in Soils and Groundwater
(2008-09-09)
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 ...
Numerical Model Evaluations of Cumulative Contraction Scour at a Bridge Site with Cohesive Soils
(2008-09-09)
The objective of this study was to perform 2-Dimensional numerical contraction
scour calculations at an actual bridge site with cohesive soils. The 2-D model used in the
analysis was the Finite Element Surface Water ...
Construction Site Utilization Planning Best Practices
(2014-03-31)
Construction site utilization planning has implications for project safety, construction efficiency, scheduling, and budgetary performance of a project. An important aspect not identified in past research efforts are the ...
Effectiveness of Silane in Mitigating Alkali-Silica Reaction in the Bibb Graves Bridge
(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 ...