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Now showing items 21-30 of 103
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 ...
Sorption and Biodegradation of Pharmaceutical Compounds in Biological Wastewater Treatment Process
(2009-02-23)
This study was performed to investigate the removal mechanisms of pharmaceutical compounds (PhACs) in biological treatment processes. The removal efficiencies and byproducts of three model compounds including 17a-ethinylestradiol ...
An Evaluation of the Use of Self-Consolidating Concrete (SCC) for Drilled Shaft Applications
(2009-02-23)
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 ...
Conditions Contributing to Poor Coagulation and Sedimentation Performance in Municipal Water Treatment
(2009-02-23)
The failure of the Auburn Water Works municipal water treatment coagulation and sedimentation process causing the plant to shut down from June 29, 1999 to July 2, 1999 was investigated. The investigation proceeded in two ...
Transferring Alabama's Smoothness Specifications from PI-based to IRI-based
(2009-02-23)
Currently, Profilograph Index (PI) is deployed as the pavement smoothness evaluation index in the Alabama DOT’s smoothness specifications. The specifications set the incentive, full and disincentive payment levels to ...
The Fate and Transport of the Antimicrobials Sulfadimethoxine and Ormetoprim in the Environment
(2009-02-23)
Over the past decade, there have been increasing concerns regarding antimicrobial contaminants in the environment. To date, there exists limited research regarding the fate of these compounds in the environment once ...
Evaluation of the Use of Reclaimed Asphalt Pavement in Stone Matrix Asphalt Mixtures
(2008-09-09)
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 ...