Foamed glass ceramic composite materials and a method for producing the same
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United States of America Patent
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Jun 28, 2016
Grant Date -
Aug 23, 2007
app pub date -
Feb 17, 2006
filing date -
Feb 17, 2006
priority date (Note) -
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Abstract
A method of making a foamed glass composite, including crushing a vitreous precursor material, such as waste glass, frit, metallurgical slag or the like, sizing the crushed vitreous precursor to segregate an amount of crushed particles of a predetermined size and pelletizing the crushed particles. The pellets are preheated and passed through a high-temperature flame to foam the pellets. The foamed pellets are air-quenched to a temperature below their dilatometric softening point and then cooling to room temperature. The foamed pellets are then mixed with Portland cement and water to form a composite material. The flame temperature is at least about 1300° C. and the pellets are preheated to within no more than about 25° C. of their dilatometric softening point. The pellets have a volume of between about 0.05 and about 1 cubic centimeter and reside in the flame for between about 0.5 to about 10 seconds.
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