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Novel methods of quantifying curing influence and freeze thaw cycles in the field
(2022-05)
This work developed a flexible resistivity sensor that provides a novel perspective to develop a deep understanding of two important problems for concrete, i.e. curing influence on concrete hydration and freeze-thaw cycles ...
Development of precast, prestressed concrete pavement technology
(2013-12)
Precast prestressed concrete pavement (PPCP) can provide many advantages over other pavement alternatives whether asphalt or concrete. The possible advantages are thinner pavement, faster construction, increased durability, ...
Quantifying the efficiency and quality of air void distributions in concrete
(2022-05)
This work establishes new ways to measure and examine the air bubble distribution within concrete. This is important to provide freeze thaw durability and resistance to oxychloride formation. These bubbles decrease the ...
Response of Entrained Air-Void Systems in Cement Paste to Pressure
(Oklahoma State University, 2011-07-01)
Determine the response of entrained air-void systems in fresh cement paste to applied pressures by utilizing micro-computed tomography. Compare results to those suggested by the ASTM C231 Type B pressure meter calibration ...
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 ...
Assessing the Bond Quality of Prestressing Strands Using Nasp Bond Test
(Oklahoma State University, 2006-05-01)
In prestressed concrete, effective transfer of the prestressing force to the surrounding concrete is essential to achieve the strength and integrity within the structure. Bonding of the prestressing strands with concrete ...
Investigation of the Quality Control of Waste Products for Concrete
(2019-05)
This work uses testing for the quality of waste products in the production of concrete. This work will look at two different waste products. The first is Pulp Cure, a recently developed method for wet curing concrete. The ...
Investigating resistivity testing as a method for quality control of concrete mixtures
(2018-05)
Concrete is a composite material. It is a mixture of cement, sand, rocks and water. It is the second largest consumable product in the world. Unfortunately, many of the concrete structures before completing the designed ...
Influence of time dependent properties and temperature effects on the performance of composite bridge girders
(2019-12)
This dissertation seeks to understand the mechanical properties of concrete, and its interaction with steel bridge girders with the purposes of deepening our understanding of the behavior of steel girder bridges made ...