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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

Volume: 117

Issue: 3

Appears on pages(s): 199-206

Keywords: autoclaved aerated concrete (AAC); floor diaphragm; strutand- tie; testing

DOI: 10.14359/51724554

Date: 5/1/2020

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.