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

An alkali-free, alkaline meta-free and chloride-free setting and hardening accelerator for hydraulic binders comprising at least one water soluble fluoride comprising aluminum salt and at least one water soluble sulfate comprising aluminum salt. A method for the production of such an accelerator des...

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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
BUILDING
BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
EARTH DRILLING
FIXED CONSTRUCTIONS
FORMS
GALLERIES
HANDLING BUILDING MATERIALS ON THE SITE
LARGE UNDERGROUND CHAMBERS
LIME, MAGNESIA
METALLURGY
MINING
REFRACTORIES
REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS
SCAFFOLDING
SHAFTS
SHUTTERING
SLAG
TREATMENT OF NATURAL STONE
TUNNELS
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Summary:An alkali-free, alkaline meta-free and chloride-free setting and hardening accelerator for hydraulic binders comprising at least one water soluble fluoride comprising aluminum salt and at least one water soluble sulfate comprising aluminum salt. A method for the production of such an accelerator described herein, where the water soluble fluoride comprising aluminum salt is produced by combining an aluminum compound such as amorphous aluminum hydroxide, crystalline aluminum hydroxide, aluminum oxide or mixtures thereof with hydrofluoric acid, optionally at enhanced temperature, prior to the blending with other components and then optionally drying.
Bibliography:Application Number: NZ20010512250