Synthetic aggregate and method of producing the same
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United States of America Patent
Stats
-
Mar 4, 2003
Grant Date -
Dec 6, 2001
app pub date -
Jul 18, 2001
filing date -
Dec 19, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A synthetic aggregate having a multiplicity of uses such as for mixing with a cementing material to form concrete, mortar or plaster is disclosed. The aggregate includes crushed fragments of a size which are capable of passing through mesh screen having sieve openings ranging from between about 19 mm and 75 microns. The aggregate fragments are made by curing and then crushing a compressed product. The compressed product is made by compressing an aqueous cementitious mixture comprising cement and at least one member selected from the group consisting of bottom ash and non-cementitious fly ash. The compressed product is cured so that it has a compressive strength of at least 600 psi.
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