SYMPOSIA PAPER Published: 01 January 1996
STP16293S

Effects of Accelerated Weathering on Architectural Laminated Glass in a Windstorm Environment

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An experimental study was conducted to assess the serviceability and ultimate limit state behavior of a fully glazed architectural laminated glass system under accelerated weathering conditions. Glazed specimens included heat-strengthened laminated glass with a low-emissivity, metallic solar coating on one glass surface next to the polyvinyl butyral interlayer. The laminated glass units were anchored to the aluminum curtain wall frame with a perimeter anchor bead of medium-modulus structural silicone sealant. Accelerated weathering was performed in a manner similar to the provisions of ASTM E773-88 and E774-92. All specimens (weathered and unweathered) were then subjected to a severe windstorm simulation test, i.e., windborne missile impacts followed by an extensive positive/negative pressure spectrum. Results indicated that the accelerated weathering had demonstrable effects on both the PVB laminated glass and the structural silicone anchor bead. However, complete resistance to glass fallout during the pressure spectrum was achieved when the inboard glass ply remained unbroken after completion of the windborne missile impacts.

Author Information

Behr, RA
Civil Engineering and Senior Investigator at the Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO
Minor, JE
the Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO
Kremer, PA
Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO
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Details
Developed by Committee: C24
Pages: 27–45
DOI: 10.1520/STP16293S
ISBN-EB: 978-0-8031-5339-4
ISBN-13: 978-0-8031-2044-0