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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 ...
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 ...
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 ...
Field investigation of pumping air entrained concrete and validation of the SAM test on lightweight aggregate concrete mixtures
(2020-05)
The use of a pump to transport concrete is one of the most common and widely accepted methods to distribute and place concrete. An air-entraining admixture can be added to fresh concrete to prevent freeze-thaw durability ...
Nondestructive testing for corrosion assessment of epoxy coated rebar
(2020-12)
The corrosion of reinforcement is a leading cause of structural deficiency and the reduction of a structure's service life. To enhance structural performance and ensure that each structure meets its intended design life, ...
Molecular methods to detect regulatory genes in anaerobic ammonia oxidizing bacteria
(2020-05)
Anaerobic ammonia oxidizing bacteria (anammox) are a group of bacteria capable of using nitrite (NO2-) as their electron acceptor and ammonium (NH4+) as their electron donor to produce Nitrogen gas (N2) in anaerobic ...
Modeling the impacts of erosion and sediment control practices for roadway construction sites on water quality in Oklahoma
(2020-05)
Construction typically requires mass clearing and grading, causing project site areas to be unstable. As a result, they lack ground cover to protect against rainfall and runoff, which results in soil degradation and erosion. ...