Text

theses

High performance concrete (HPC) is being used on daily basis by the construction industry, due to its suburb properties. HPC attains high strength and durability that made it out preform other concrete mixes. With the extensive use of HPC in all type of infrastructures, challenges tended to arise, and shrinkage issues became obvious, and accelerated curing was needed by the construction industry. Shrinkage in HPC resulted into cracking, which made the steel reinforcement in all the structures vulnerable to corrosion. Fiber reinforcement in concrete became one of the practices to minimize shrinkage cracks, and avoid corrosion concerns. Moreover, accelerator admixtures started gaining popularity because it allowed faster construction, which resulted in shorter traffic closures, as well as lowering construction costs.
Effects on creep and shrinkage behaviors with the use of fibers and accelerator liquid admixtures in HPC remains in question. Although fiber reinforced HPC and high early strength (HES) concrete is being frequently used, there is not enough research preformed to understand their creep and shrinkage phenomena.
The objective of this research study is to investigate the effects of polypropylene fibers and accelerated admixtures to creep and shrinkage deformations in HPC. Several theoretical models will also be modeled, analyzed and evaluated with comparison to the experimental results. Finally, adjustments to the models will be suggested to improve creep predictions.

ETD_9836

M.S.

Includes bibliographical references

doi:10.7282/t3-1rzk-q910

ETD graduate

The author owns the copyright to this work.