Title: Shear and Flexural Behavior of Autoclaved Aerated Concrete Confined Masonry Walls
Author(s): J. Varela-Rivera, L. Fernandez-Baqueiro, R. Alcocer-Canche, J. Ricalde-Jimenez, and R. Chim-May
Publication: Structural Journal
Appears on pages(s): 1453-1462
Keywords: autoclaved aerated concrete; confined masonry walls; flexural behavior; in-plane reverse cyclic loads; shear behavior
A total of seven full-scale autoclaved aerated concrete confined walls were tested in the laboratory under reverse cyclic loads: four with shear behavior and three with flexural behavior. In the first case, the study variable was the wall aspect ratio, and in the second, the wall axial compressive stress. The performance of walls with shear behavior was characterized by diagonal and flexure-shear cracks. Performance of walls with flexural behavior was defined by yielding of steel longitudinal reinforcement followed by flexure-
shear and diagonal cracks. Cracking patterns and lateral loaddrift ratio curves are presented. Equations for shear strength and flexure-shear strength based on experimental data are provided. Flexural strength of walls was validated using flexural theory. Wall drift ratios increased as the aspect ratio increased. Displacement ductilities increased as the axial load decreased.