Sulfate-free, alkali-free, alkaline metal-free and chloride-free setting and hardening accelerator for hydraulic binders

A sulphate-free and alkali-free or alkaline-metal free, respectively, and chloride-free setting and hardening accelerator for hydraulic binders comprising at least one water soluble fluoride comprising aluminium salt. The aluminium salt may be obtainable from a reaction of an aluminium compound sele...

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Bibliographic Details
Main Authors BURGE, THEODOR A, SOMMER, MARCEL, WOMBACHER, FRANZ
Format Patent
LanguageEnglish
Published 26.11.2002
Edition7
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:A sulphate-free and alkali-free or alkaline-metal free, respectively, and chloride-free setting and hardening accelerator for hydraulic binders comprising at least one water soluble fluoride comprising aluminium salt. The aluminium salt may be obtainable from a reaction of an aluminium compound selected from the group consisting of amorphous aluminium hydroxide, crystalline aluminium hydroxide, aluminium oxide and mixtures thereof with hydrofluoric acid. The accelerator may additionally comprise a complexing agent selected from the group consisting of nitrilotriacetic acid, ethylene diamine tetraacetic acid, hydroxycarboxylic acids and polyhydroxycarboxylic acids, phosphonic acids, polyols, and mixtures thereof.
Bibliography:Application Number: NZ20010512249