Preparation of concrete accelerator
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United States of America Patent
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Feb 17, 2004
Issued Date -
N/A
app pub date -
Jun 6, 2002
filing date -
Dec 8, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An alkali-free accelerator for sprayed concrete is prepared by dissolving aluminium sulphate and amorphous aluminium hydroxide in water which optionally contains one amine, and optionally adding at least one stabiliser, selected from hydroxycarboxylic acid and phosphoric acids and non-alkaline salts thereof, and at least one defoaming agent.
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