Title:
Precast Concrete Corbels for Insulated Wall Panels
Author(s):
Mohamed Elkady, Maher K. Tadros, Mark Lafferty, George Morcous, and Doug Gremel
Publication:
Concrete International
Volume:
37
Issue:
10
Appears on pages(s):
45-50
Keywords:
wythe, reinforcement, creep, ductility
DOI:
10.14359/51688214
Date:
10/1/2015
Abstract:
For insulated wall panels, a common practice is to connect the two concrete wythes with a solid concrete block through the insulation at the corbel location. The resulting thermal bridge significantly reduces the energy efficiency of the wall panel. Depending on the climate and building use, the accumulation of moisture on the surfaces can lead to degradation of indoor air quality or the appearance of the panel. These effects are the main reasons for the research summarized in this article.
Related References:
1. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 519 pp.
2. PCI Handbook Committee, PCI Design Handbook: Precast and Prestressed Concrete, seventh edition, Precast/Prestressed Concrete Institute, Chicago, IL, 2010, 804 pp.
3. “Minimum Design Loads for Buildings and Other Structures (ASCE/SEI 7-10),” American Society of Civil Engineers, Reston, VA, 2013, 636 pp.
4. ACI Committee 440, “Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer (FRP) Bars (ACI 440.1R-15),” American Concrete Institute, Farmington Hills, MI, 2015, 83 pp.
5. Elkady, M., “Precast Concrete Insulated Wall Panel Corbels without Thermal Bridging,” MS thesis, University of Nebraska-Lincoln, Lincoln, NE, 2013.
6. Morcous G., and Tawadrous, R., “Testing of THiN Wall Corbels,” final report, University of Nebraska-Lincoln, Lincoln, NE, June 2015, 56 pp.