Method for selecting a pozzolan intended to be incorporated into a composite material comprising cement and glass
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United States of America Patent
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-
Feb 19, 1991
Grant Date -
N/A
app pub date -
Jul 6, 1989
filing date -
Jul 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
According to the invention a pozzolan is selected which exhibits a capacity for fixing lime during the Chapelle test at 90.degree. C. greater than 700 mg of CaO per gram of pozzolan, a capacity for fixing lime during the Chapelle test at 50.degree. C. greater than 200 mg of CaO per gram of pozzolan and a ratio of the quantity of CaO fixed during the 50.degree. C. Chapelle test to the specific surface area of the pozzolan which is greater than about 10 mg of CaO per square meter of pozzolan. The composite material obtained is used in construction to produce facade elements, for example, which have improved resistance to aging.
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Cited Art Landscape
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