Hydraulic Binder
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United States of America Patent
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Issued Date -
Nov 27, 2008
app pub date -
Apr 5, 2005
filing date -
Apr 5, 2004
priority date (Note) -
Abandoned
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Abstract
In a hydraulic binder containing slags, aluminium-silicates and calcium sulphate, slag, in particular furnace slag, in amounts below 50% (w/w) as well as aluminium-silicates different from furnace slag, as for example flue-ash and natural aluminium-silicates, as for example basalt or andesite, in amounts of 5 to 75% (w/w) respectively related to the entire blend with the requirement that the stm of slag and aluminium-silicates is between 82 and 95.9% (w/w) and as one of the activators CaSO.sub.4 in amounts between 4 and 15% (w/w) as essential components are present. Additionally alkali activators, in particular alkali hydroxides and/or carbonates of Na and/or K in amounts from 0.1 to 3% (w/w) are deployed.
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