SYMPOSIA PAPER Published: 01 January 1983
STP29482S

Glass-Mica Composite: A New Structural Thermal-Insulating Material for Building Applications

Source

Homogeneous, rigid glass-mica composites have been synthesized from mixtures of Canadian natural mica flakes of the phlogopite type and ground glass powders prepared from recycled soda-lime waste glasses by a simple sintering process. By means of selection of compositions and processing techniques, composites can be fabricated into products that exhibit a cellular structure, a highly densified structure, and multilayer and sandwich structures. The cellular structure composite has a thermal conductivity in the range of 0.165 to 0.230 W/m·°C when measured over the temperature range 25 to 180°C, and a compressive strength of about 0.874 MPa; the highly densified composite, on the other hand, has a thermal conductivity in the range of 0.155 to 0.330 W/m·°C, a compressive strength in excess of 40 MPa, and an instantancous coefficient of thermal expansion of 5.8 × 10−6/°C at 100°C. These glass-mica composites exhibit qualities such as insulating efficiency, safety, mechanical strength, and durability that are suitable for engineering applications in building structures or other systems.

Author Information

Low, NMP
Center for Building Studies, Concordia University, Montreal, Quebec, Canada
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Details
Developed by Committee: C16
Pages: 715–729
DOI: 10.1520/STP29482S
ISBN-EB: 978-0-8031-4856-7
ISBN-13: 978-0-8031-0230-9