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Now showing items 11-20 of 24
Reducing shrinkage through admixtures and aggregate gradation
(2021-05)
A study was conducted into the impacts of shrinkage reducing admixtures (SRAs) and larger nominal maximum coarse aggregate sizes on the properties and performance of concrete mixtures. Bridge deck concrete mixtures with ...
Performance based testing for air entrainment and total heat of reclaimed fly ash
(2021-07)
As coal combustion energy plants are being converted to natural gas, the tons of fly ash produced in the United States has dramatically decreased. The current demand in fly ash supply can be mitigated with the introduction ...
Compaction studies on open-graded aggregate materials: Moving towards deflection-based compaction control
(2022-12)
Compaction quality control of unbound aggregate layers in pavements has been typically based on target density values, which are defined in reference to the highest densities that can be achieved in the lab using standardized ...
Factors that influence end zone cracking in pre-tensioned prestressed concrete bridge beams - A finite element analysis
(2021-05)
The basic problem studied as part of this master's thesis work consists of two main parts.
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, ...
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 ...
Suitability of elutriation for the extraction of microplastics from natural soils
(2022-12)
Microplastics are a class of emerging contaminant which pose serious risks to the health and safety of terrestrial and marine ecosystems. Much research has been conducted regarding the prevalence of microplastics in marine ...
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 ...
Effects of trace metals on chloraminated disinfection byproduct formation of drinking water biofilms
(2021-07)
The use of disinfecting chemicals on public water supplies is a practice conducted around the world today. Disinfectants such as chlorine, chloramine, and ozone can be added to a water supply to eliminate any bacteria and ...