Check out my article in Engineering Structures Volume 252 from February 2022 titled Hybrid fiber reinforced concrete special shear wall boundary element in compression. This paper comes from the second chapter of my dissertation and was published with the help of Carlos Arteta, Yi Shao, and Claudia Ostertag.
Abstract
Post-earthquake observations and laboratory tests reveal the needs for innovative solutions that can enhance the concrete compression ductility in the boundary elements of special structural walls. This study proposes a new boundary element design by utilizing hybrid fiber reinforced concrete (HyFRC). One full-scale HyFRC boundary element is tested in uniaxial compression and compared to three full-scale conventional concrete boundary elements that are compliant with ACI-318 codes. Results demonstrate that replacing conventional concrete by HyFRC can (1) control the early-stage surface damage, (2) improve the confinement for concrete core, and (3) delay the onset of longitudinal bar buckling. Relative to the conventional concrete boundary elements, which lose load capacity after spalling, the HyFRC boundary element exhibits a unique post-spalling load plateau and improves the compression toughness by more than 150%.
Hybrid fiber reinforced concrete special shear wall boundary element in compression - ScienceDirect