Fire-proof material
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United States of America Patent
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Sep 5, 2006
Grant Date -
May 27, 2004
app pub date -
Oct 4, 2001
filing date -
Oct 5, 2000
priority date (Note) -
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Abstract
The fire-protection material for constructions made of concrete and prestressed concrete, especially for tunnels, in the form of prefabricated plates or sprayed-on and cured coatings is prepared from hydraulically curing compositions containing aluminous cement, optionally in admixture with Portland cement, fillers and, if desired, fibers, curing accelerators, curing delayers, plasticizing agents and foaming agents, wherein the cured material contains less than 5% by weight of ettringite and wherein the composition contains from 50 to 200 weight parts of aluminous cement and from 10 to 250 weight parts of xonotlite in the uncured composition.
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