Date of this Version
Luebke, J. (2021). Out-Of-Plane Behavior of Concrete Insulated Wall Panels with 2-Inch, 8-Inch, and 10-Inch Insulation [Master's thesis, University of Nebraska-Lincoln].
Insulated concrete sandwich wall panels provide structurally and thermally efficient building envelopes and are becoming more popular as energy regulations tighten. To continually adapt to an ever-changing building market and new energy regulations, insulated concrete wall panels are being constructed with thinner wythes, thicker insulation, and relying on partial composite action to decrease material costs and increase thermal and structural efficiency. Numerous methods of the design of partially composite insulated concrete sandwich wall panels have been introduced in recent decades and have been verified by comparing their results to existing experimental testing. Existing testing data for insulated concrete sandwich wall panels does not contain adequate experimental testing for thin wythe and thick insulation sandwich wall panels; therefore, the current methods of design have not been adequately verified for the design of such sandwich wall panels.
This project aimed to validate current methods of design of sandwich wall panels for the use of thin wythe and thick insulation concrete sandwich wall panels. The study concluded that current methods of design adequately predict behavior of thin wythe and thick insulation concrete sandwich wall panels within the elastic region but do not adequately predict the ultimate capacity of thin wythe and thick insulation concrete sandwich wall panels.
The predictions of two existing methods, which predict elastic shear stiffness of connectors, were compared to the results of 15 double shear tests for three unique connectors with agreeable results. The predictions of three methods, which predict elastic behavior and two methods, which calculate ultimate capacity, were compared to the testing results of six full-scale panels. All methods predicting elastic behavior proved to be accurate and one method adequately predicted ultimate panel capacities.
Advisor: Marc Maguire