WO2002090287A1 - Waterproofed cementitious compositions and method of making the same - Google Patents
Waterproofed cementitious compositions and method of making the same Download PDFInfo
- Publication number
- WO2002090287A1 WO2002090287A1 PCT/EP2002/004940 EP0204940W WO02090287A1 WO 2002090287 A1 WO2002090287 A1 WO 2002090287A1 EP 0204940 W EP0204940 W EP 0204940W WO 02090287 A1 WO02090287 A1 WO 02090287A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- group
- general formula
- carbon atoms
- emulsion
- Prior art date
Links
- 0 CC(CC(CC1)*#*)C1O Chemical compound CC(CC(CC1)*#*)C1O 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Definitions
- This invention relates to the waterproofing of porous cementitious materials and to admixtures for waterproofing.
- cementitious materials such as cement and concrete and various artificial building stones based on these are frequently made into walls, floors, roofs and the like, where they will be exposed to water. As such materials are always inherently porous, water can penetrate them. Although appropriate formulation can do much to reduce this inherent porosity, it can never completely get rid of it. There is therefore a substantial industry that seeks to provide waterproofing to such cementitious surfaces.
- the internal methods involved adding a waterproofing substance to a fluid cementitious mix before hardening.
- the materials that have been most commercially successful in this regard have been known water-repellent, fatty acid-based materials, typically stearates and oleates. However, relatively large quantities of such materials are needed.
- the external treatments have involved coating the surface of the hardened cementitious material with a waterproofing substance.
- a waterproofing substance contain materials that are highly water repellent and are of low viscosity, to allow them to penetrate into the cementitious material.
- Particularly successful types of waterproofing materials are those based on organosilicon materials. Aqueous emulsions are most frequently encountered, but solvent- based preparations and even organosilicon materials that are inherently sufficiently fluid have also been used. Multiple applications are needed for best effect, and the cost of applying such treatment to large structures can be very high.
- organosilicon materials as admixtures to cementitious mixes, in an attempt to utilise the good waterproofing properties of the surface- applied materials to the convenience of use of the stearates and oleates.
- the materials used have been aqueous hydroly sable silane emulsions.
- the invention therefore provides a method of conferring water impermeability on a hardened cementitious composition which is formed from a fluid cementitious mix, by the addition to the mix of an aqueous emulsion of organosilicon material, which material comprises from 0.25-4.5% by weight of the emulsion of an alkoxysilane and from 0.1-2.0% of an alkoxysiloxane.
- the invention also provides a waterproof hardened cementitious composition comprising internally an alkoxysilane and an alkoxysiloxane, which had been added as an admixture to a cementitious mix from which the hardened composition was formed.
- the emulsion is one that contains
- R ⁇ is an alkyl group with 3 to 12 carbon atoms; and R 2 is a methyl or ethyl group;
- R 3 is an alkyl group with 1 to 6 carbon atoms, a is 0.8 to 1.2 and b is 0.2 to 1.2;
- some of the water may be replaced by from 0.001-0.5% by weight of an emulsifier, 0.001% by weight of filler with an effective surface area of at least 40M 2 /g.
- the emulsion contains
- R 1 is an alkyl group with 1 to 16 carbon atoms
- R 2 is an alkyl group with 1 to 4 carbon atoms
- R 2 has the meaning already given, and R 3 is an aminoalkyl group with 1 to 6 carbon atoms or a group of the general formula
- n is a whole number from 1 to 5
- the ratio of bl to b2 being such that more than 1 and up to 3 OR 2 groups of compound bl correspond to one SiOH group of compound b2,
- materials suitable for preparing aqueous emulsions for use in this invention include products such as RHEOMIX® 790 ex Feb MBT. Such materials typically have solids contents of 30% or more and have to be diluted to make a composition for use in this invention.
- the emulsions are added to a cementitious mix at a rate of from 0.1 - 2.0%, preferably from 0.5 - 1.5% by weight emulsion by weight of cement.
- the hardened cementitious product containing the emulsion as admixture has a waterproofing performance that is noticeably superior to anything currently available.
- a B C dosage (% by weight 1.8 NA 1.1 on cement) capillary 0.13 4.0 0.1 absorption (mg/mm 2 )
- the stone according to the invention was superior to the stones which used stearate and sprayed siloxane.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02724306A EP1390318A1 (en) | 2001-05-08 | 2002-05-03 | Waterproofed cementitious compositions and method of making the same |
IL153588A IL153588A (en) | 2001-05-08 | 2002-12-22 | Waterproofed cementitious compositions and method of making the same |
NO20030070A NO20030070L (en) | 2001-05-08 | 2003-01-07 | Cement-containing compositions made waterproof and method of making the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0111145.9A GB0111145D0 (en) | 2001-05-08 | 2001-05-08 | Admixture |
GB0111145.9 | 2001-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002090287A1 true WO2002090287A1 (en) | 2002-11-14 |
Family
ID=9914166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/004940 WO2002090287A1 (en) | 2001-05-08 | 2002-05-03 | Waterproofed cementitious compositions and method of making the same |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1390318A1 (en) |
GB (1) | GB0111145D0 (en) |
IL (1) | IL153588A (en) |
NO (1) | NO20030070L (en) |
WO (1) | WO2002090287A1 (en) |
YU (1) | YU703A (en) |
ZA (1) | ZA200300162B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009935A2 (en) | 2005-07-15 | 2007-01-25 | Dow Corning Corporation | Hydrophobing minerals and filler materials |
DE102008063965A1 (en) | 2008-12-19 | 2010-06-24 | Evonik Goldschmidt Gmbh | Hydrophobic cementitious compositions |
DE202008018525U1 (en) | 2008-12-19 | 2016-02-01 | Evonik Degussa Gmbh | Hydrophobic cementitious compositions |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0570203A (en) * | 1991-09-10 | 1993-03-23 | Shin Etsu Chem Co Ltd | Cement composition containing alkoxysilanes for extrusion molding |
US5556915A (en) * | 1991-12-20 | 1996-09-17 | Toyo Ink Manufacturing Co., Ltd. | Water-based organosilicon composition |
US5702509A (en) * | 1995-12-22 | 1997-12-30 | Minnesota Mining And Manufacturing Company | Masonry treatment composition |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9605706D0 (en) * | 1996-03-19 | 1996-05-22 | Dow Corning | Method for hydrophobing gypsum |
GB9614978D0 (en) * | 1996-07-17 | 1996-09-04 | Dow Corning | Gypsum mixture containing hydrophobic additive and method for hydrophobing gypsum |
US6403163B1 (en) * | 2000-06-27 | 2002-06-11 | Chemrex, Inc. | Method of treating surfaces with organosilicon water repellent compositions |
-
2001
- 2001-05-08 GB GBGB0111145.9A patent/GB0111145D0/en not_active Ceased
-
2002
- 2002-05-03 WO PCT/EP2002/004940 patent/WO2002090287A1/en not_active Application Discontinuation
- 2002-05-03 YU YU703A patent/YU703A/en unknown
- 2002-05-03 EP EP02724306A patent/EP1390318A1/en not_active Withdrawn
- 2002-12-22 IL IL153588A patent/IL153588A/en not_active IP Right Cessation
-
2003
- 2003-01-07 NO NO20030070A patent/NO20030070L/en not_active Application Discontinuation
- 2003-01-07 ZA ZA200300162A patent/ZA200300162B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0570203A (en) * | 1991-09-10 | 1993-03-23 | Shin Etsu Chem Co Ltd | Cement composition containing alkoxysilanes for extrusion molding |
US5556915A (en) * | 1991-12-20 | 1996-09-17 | Toyo Ink Manufacturing Co., Ltd. | Water-based organosilicon composition |
US5702509A (en) * | 1995-12-22 | 1997-12-30 | Minnesota Mining And Manufacturing Company | Masonry treatment composition |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 391 (C - 1087) 22 July 1993 (1993-07-22) * |
See also references of EP1390318A1 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009935A2 (en) | 2005-07-15 | 2007-01-25 | Dow Corning Corporation | Hydrophobing minerals and filler materials |
WO2007009935A3 (en) * | 2005-07-15 | 2007-04-05 | Dow Corning | Hydrophobing minerals and filler materials |
JP2009501123A (en) * | 2005-07-15 | 2009-01-15 | ダウ・コ−ニング・コ−ポレ−ション | Hydrophobized minerals and filler materials |
AU2006271743B2 (en) * | 2005-07-15 | 2012-03-15 | Dow Corning Corporation | Hydrophobing minerals and filler materials |
US8142856B2 (en) | 2005-07-15 | 2012-03-27 | Dow Corning Corporation | Hydrophobing minerals and filler materials |
DE102008063965A1 (en) | 2008-12-19 | 2010-06-24 | Evonik Goldschmidt Gmbh | Hydrophobic cementitious compositions |
EP2202210A2 (en) | 2008-12-19 | 2010-06-30 | Evonik Goldschmidt GmbH | Hydrophobic cementitious composition |
US7931747B2 (en) | 2008-12-19 | 2011-04-26 | Evonik Goldschmidt Gmbh | Hydrophobized cement-containing compositions |
DE202008018525U1 (en) | 2008-12-19 | 2016-02-01 | Evonik Degussa Gmbh | Hydrophobic cementitious compositions |
DE102008063965B4 (en) * | 2008-12-19 | 2017-05-18 | Evonik Degussa Gmbh | Hydrophobic cementitious compositions |
DE102008063965C5 (en) | 2008-12-19 | 2019-02-21 | Evonik Degussa Gmbh | Hydrophobic cementitious compositions |
Also Published As
Publication number | Publication date |
---|---|
ZA200300162B (en) | 2004-03-10 |
NO20030070D0 (en) | 2003-01-07 |
GB0111145D0 (en) | 2001-06-27 |
IL153588A (en) | 2009-09-22 |
EP1390318A1 (en) | 2004-02-25 |
NO20030070L (en) | 2003-03-10 |
IL153588A0 (en) | 2003-07-06 |
YU703A (en) | 2005-11-28 |
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