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Now showing items 1-10 of 24
Developing Predictive Models for Fuel Consumption and Maintenance Cost Using Equipment Fleet Data
(2019-07)
The state departments of transportation (DOTs) possess a big construction equipment fleet that is engaged in various highway maintenance and repair activities all over the state. Fleet managers are called upon to give the ...
Characterizing pavement skid resistance for roadway crash prediction in Oklahoma
(2019-07)
Skid resistance is critical for roadway safety. This study investigates two approaches to characterizing skid resistance based on pavement texture data and further exploring its effects on roadway crashes in Oklahoma. Skid ...
Durability evaluation of concrete sealed with polyurea polyaspartic coatings
(2020-05)
For this project, the performance of various polyaspartic coating materials was investigated. Motivation for this study was to assess various options for the containment of concrete within bridge parapet walls to prevent ...
Evaluating the behavior of axial lap steel connections made in combination of slip-critical bolts and longitudinal fillet welds under direct tension and fatigue
(2021-07)
Steel building and bridge connections have traditionally relied on either bolts or welds only to carry the required load from member to member. Due to the historical use of bolts or welds only, the combination of bolts and ...
Creation of cracks of known sizes in reinforced concrete beams and performance evaluation of silane in concrete bridge decks
(2020-05)
Cracks are a major concern for the durability of concrete as they allow the harmful chemicals from outside to penetrate the concrete surface. Investigating the effect of various crack sizes is vital to further evaluate the ...
Effect of soil pH and texture on the ratio of denitrification end products
(2022-12)
Nitrous oxide (N₂O) is a potent greenhouse gas that contributes to stratospheric ozone depletion and global climate change. Denitrification has two potential end products, N₂O and dinitrogen (N₂), and the ratio of these ...
Application of nonlinear autoregressive neural networks with exogenous inputs (NARX) in seismic fragility analysis of buildings
(2020-07)
Rapidly growing societal needs in urban areas are increasing the demand for tall buildings with complex structural systems. Many of these urban areas are located in zones characterized by high seismic activity. Quantifying ...
Comparing the variability of sample consolidation methods on low workability concrete
(2020-05)
Quality control and assurance testing for concrete provides quantitative information about the quality of the concrete being placed. Yet, improperly consolidating the fresh concrete sample can negatively affect the testing ...
Dual statistical approach for correlation of shear wave velocity with the SCPTu parameters
(2022-07)
Over 30 years of research in the field of shear wave velocity (Vₛ) estimation, scores of researchers were successful in modeling Vs using the Seismic Cone Penetration Test (SCPT) parameters. Through this research work, by ...
Camber, prestress loss, and determination of distribution factors in pretensioned concrete girder bridges
(2022-12)
This research investigates prestress losses and camber of Prestressed Concrete bridge beams (PC Beams), and the performance and load testing of the SH 4 Bridge over the North Canadian River in Canadian County, OK. The ...