@proceedings {28938,
	title = {The Behavior of Curved Post-tensioned Concrete Structures without Out-of-plane Reinforcement},
	year = {2016},
	address = {Conference: ACI fall convention},
	abstract = {Research aimed toward understanding the underlying mechanics and behaviors of curved post-tensioned concrete structures subject to prestressing loads is somewhat limited in the literature. Previous research focused on radial (i.e., out-of-plane normal) stress development has been analytical and, to the research team{\textquoteright}s knowledge, there is no experimental research on this topic currently available in the public domain. As a result, this research study is aimed at producing unique experimental data to gain important insights into the effect of localized tensile stresses and concrete delamination behavior in curved post-tensioned structures. Two curved post-tensioned concrete wall assemblies were constructed and tested to delamination failure under monotonically increasing prestressing loads. In an effort to study the size-effect in delamination failure observed in such elements, all dimensions of the second specimen were double those of the first specimen, while maintaining the reinforcement ratio. The test results showed a size-effect related influence on the delamination failures. Furthermore, the compressive stresses at the onset of the first delamination crack were 0.15 fc{\textquoteright}~0.23 fc{\textquoteright} which are lower than the allowable stress limit for a service load condition in construction, 0.35 fc{\textquoteright}, specified in the ASME BPVC Section III, Division 2. Finally, the friction losses based on ACI 343R underestimated the actual friction measured during testing by 37 to 44 \%. Discussions regarding size effect, indication of delamination failure, stress concentrations around the post-tensioning ducts, and prestressing losses due to a strand bundle effect will be presented.},
	url = {https://www.researchgate.net/publication/317316899_The_Behavior_of_Curved_Post-Tensioned_Concrete_Structures_without_Out-of-Plane_Reinforcement},
	author = {Clint R Woods and Trevor Hrynyk and Oguzhan Bayrak}
}
