EP 1019333 A1 20000719 - AQUEOUS SUSPENSION BASED ON ALKALINE ALUMINIUM POLYSULPHATE, PREPARATION METHOD AND USE IN THE FIELD OF BUILDING MATERIALS
Title (en)
AQUEOUS SUSPENSION BASED ON ALKALINE ALUMINIUM POLYSULPHATE, PREPARATION METHOD AND USE IN THE FIELD OF BUILDING MATERIALS
Title (de)
WAESSRIGE SUSPENSION AUF BASIS VON ALKALISCHEM ALUMINIUMPOLYSULFAT, VERFAHREN ZUR HERSTELLUNG UND VERWENDUNG IM BAUSTOFFGEBIET
Title (fr)
SUSPENSION AQUEUSE A BASE DE POLYSULFATE D'ALUMINIUM ALCALIN, SON PROCEDE DE PREPARATION ET SON UTILISATION DANS LE DOMAINE DES MATERIAUX DE CONSTRUCTION
Publication
Application
Priority
- FR 9802122 W 19981005
- FR 9712374 A 19971003
Abstract (en)
[origin: FR2769308A1] The use of an aqueous alkaline composition containing an aluminum polysulfate as a setting and/or thickening accelerator for cement, mortar or concrete slurries is new. An aqueous alkaline composition containing an aluminum polysulfate (derivative) of formula Al(OH)a(SO4)b(SIOx)c (I) is used as a setting and/or thickening accelerator for cement, mortar or concrete slurries. a = 0.8 to 1.7, b = 0.3 to 1.2, c = 0 to 0.1 and x = 2 to 4. Independent claims are also included for (i) the use, as a setting and/or thickening accelerator for cement, mortar or concrete slurries, of an aqueous alkaline composition containing 1.65 mol/l of an aluminum polysulfate (derivative) of formula (I), where a = 0.75 to 2, b = 0.3 to 1.2, c = 0 to 0.1 and x = 2 to 4; (ii) an aqueous silica particle suspension containing an alkali metal sulfate and an aluminum polysulfate of formula (I), where a = 0.8 to 1.7, b = 0.3 to 1.2, c = 0 to 0.1 and x = 2 to 4; (iii) preparation of the aqueous composition or aqueous suspension as described above by stirring an aqueous suspension with an aluminum sulfate and optionally silica and water, adding an aqueous alkali metal silicate solution, homogenizing at ambient temperature, adding an aqueous alkali metal aluminate solution with stirring at ambient temperature and heating at 50-60 deg C to obtain the desired suspension; (iv) use of the above aqueous suspension (ii) as a setting and/or thickening accelerator for cement, mortar or concrete slurries; and (v) a process for spraying a concrete or mortar layer onto a surface, in which the above aqueous composition or aqueous suspension is added just ahead of or into the spraying equipment. Used as a setting and/or thickening accelerator for cement, mortar or concrete slurries, especially spray concrete or mortar mixes.
IPC 1-7
IPC 8 full level
C01B 33/141 (2006.01); C01B 33/26 (2006.01); C01F 7/02 (2006.01); C01F 7/74 (2006.01); C04B 22/00 (2006.01); C04B 22/14 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 103/10 (2006.01)
CPC (source: EP US)
C04B 22/00 (2013.01 - EP US); C04B 22/148 (2013.01 - EP US); C04B 40/0039 (2013.01 - EP US); C04B 2103/12 (2013.01 - EP US); C04B 2111/00155 (2013.01 - EP US)
Citation (search report)
See references of WO 9918045A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
FR 2769308 A1 19990409; FR 2769308 B1 19991224; AU 9445998 A 19990427; CA 2305486 A1 19990415; CA 2305486 C 20030729; EP 1019333 A1 20000719; JP 2001519309 A 20011023; US 6423133 B1 20020723; WO 9918045 A1 19990415; ZA 988997 B 20000403
DOCDB simple family (application)
FR 9712374 A 19971003; AU 9445998 A 19981005; CA 2305486 A 19981005; EP 98947601 A 19981005; FR 9802122 W 19981005; JP 2000514860 A 19981005; US 50978400 A 20000615; ZA 988997 A 19981002