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1. WO2022002877 - FREE-FLOWING POWDER COMPRISING A POROUS SUBSTRATE FUNCTIONALIZED WITH AT LEAST ONE ACCELERATOR

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Publication Number WO/2022/002877
Publication Date 06.01.2022
International Application No. PCT/EP2021/067743
International Filing Date 28.06.2021
IPC
C04B 20/10 2006.1
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
20Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/-C04B18/159; Treatment of materials according to more than one of the groups C04B14/-C04B18/116; Expanding or defibrillating materials
10Coating or impregnating
C04B 28/02 2006.1
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02containing hydraulic cements other than calcium sulfates
CPC
C04B 20/1022
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
20Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
10Coating or impregnating
1018with organic materials
1022Non-macromolecular compounds
C04B 20/107
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
20Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
10Coating or impregnating
1055with inorganic materials
107Acids or salts thereof
C04B 2103/0075
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2103Function or property of ingredients for mortars, concrete or artificial stone
0068Ingredients with a function or property not provided for elsewhere in C04B2103/00
0075Anti-dusting agents
C04B 2103/12
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2103Function or property of ingredients for mortars, concrete or artificial stone
10Accelerators; Activators
12Set accelerators
C04B 2111/00482
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2111Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
00474Uses not provided for elsewhere in C04B2111/00
00482Coating or impregnation materials
C04B 2111/00672
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2111Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
00474Uses not provided for elsewhere in C04B2111/00
00663as filling material for cavities or the like
00672Pointing or jointing materials
Applicants
  • SIKA TECHNOLOGY AG [CH]/[CH]
Inventors
  • SOUDIER, Jerome
  • HARRATH, Alexandre Ben
Agents
  • SIKA PATENT ATTORNEYS
Priority Data
20305753.403.07.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FREE-FLOWING POWDER COMPRISING A POROUS SUBSTRATE FUNCTIONALIZED WITH AT LEAST ONE ACCELERATOR
(FR) POUDRE À ÉCOULEMENT LIBRE COMPRENANT UN SUBSTRAT POREUX FONCTIONNALISÉ AVEC AU MOINS UN ACCÉLÉRATEUR
Abstract
(EN) The present invention relates to a free-flowing powder composition comprising at least one substrate, said substrate having pores and an external surface between said pores, wherein said external surface is functionalized with at least one accelerator for a hydraulic setting composition, said accelerator being liquid, or hygroscopic or deliquescent, and wherein after 15 minutes of immersion of said free-flowing powder composition in water at 20°C at least 80% in weight of said accelerator is solubilized, provided that said free-flowing powder composition is immersed in an amount of water sufficient so that the saturation concentration of said accelerator cannot be reached. The invention also relates to a method for preparing said free-flowing powder composition. The invention is further directed to the use of said free-flowing powder composition as an additive for mortar or concrete composition so as to provide an accelerating effect, an anti-ageing effect and an anti-dusting effect. The invention additionally concerns a dry mortar or concrete composition comprising a hydraulic binder, said free-flowing powder composition and a granulate, wet mortar or concrete composition and hardened body obtained therefrom.
(FR) La présente invention se rapporte à une composition de poudre à écoulement libre comprenant au moins un substrat, ledit substrat comportant des pores et une surface externe entre lesdits pores, ladite surface externe étant fonctionnalisée avec au moins un accélérateur pour composition à prise hydraulique, ledit accélérateur étant liquide, ou hygroscopique ou déliquescent, et après 15 minutes d'immersion de ladite composition de poudre à écoulement libre dans de l'eau à 20 °C, au moins 80 % en poids dudit accélérateur étant solubilisé, à condition que ladite composition de poudre à écoulement libre soit immergée dans une quantité d'eau suffisante pour que la concentration de saturation dudit accélérateur ne puisse pas être atteinte. L'invention se rapporte également à un procédé de préparation de ladite composition de poudre à écoulement libre. L'invention est en outre relative à l'utilisation de ladite composition de poudre à écoulement libre en tant qu'additif pour une composition de mortier ou de béton de façon à fournir un effet d'accélération, un effet antivieillissement et un effet anti-poussière. L'invention concerne en outre une composition de mortier ou de béton sec comprenant un liant hydraulique, ladite composition de poudre à écoulement libre et un granulat, une composition de mortier ou de béton humide et un corps durci obtenu à partir de cette dernière.
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