Title: Evaluation of Autoclaved Aerated Concrete Floor Diaphragms Subjected to In-Plane Loads
Author(s): Vanessa L. Storlie, Cody K. Parker, and Jennifer E. Tanner
Publication: Structural Journal
Appears on pages(s): 199-206
Keywords: autoclaved aerated concrete (AAC); floor diaphragm; strutand- tie; testing
Autoclaved aerated concrete (AAC) is a cellular concrete with consistent material properties. AAC structures have many advantages including ease of construction, low density, and high fire
and thermal resistance. In this study, a suite of 14 scaled floor diaphragms were tested to determine physical behavior of the system subjected to either monotonic and cyclic loads. Next, a simple strut-and-tie model (STM) was used as a mechanism to predict the strength of floor diaphragms subject to in-plane lateral loads. Testing validated that although the model violates the minimum angle of 25 degrees, individual panel movement and nodal confinement permit sufficient rotation. Test results indicate that the STM provides conservative predictions for the strength of floor diaphragms.