EP2640676A1 - Dry mortar and its use as render - Google Patents
Dry mortar and its use as renderInfo
- Publication number
- EP2640676A1 EP2640676A1 EP11784629.5A EP11784629A EP2640676A1 EP 2640676 A1 EP2640676 A1 EP 2640676A1 EP 11784629 A EP11784629 A EP 11784629A EP 2640676 A1 EP2640676 A1 EP 2640676A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dry mortar
- weight
- plaster
- mortar according
- dispersion powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000006185 dispersion Substances 0.000 claims abstract description 25
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 16
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 14
- 229920001897 terpolymer Polymers 0.000 claims abstract description 13
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 11
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 239000011505 plaster Substances 0.000 claims description 50
- 150000003839 salts Chemical class 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 239000006004 Quartz sand Substances 0.000 claims description 6
- 239000010451 perlite Substances 0.000 claims description 5
- 235000019362 perlite Nutrition 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000008262 pumice Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 4
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- -1 Rheologieverbesserer Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- VVMMWNAWPFMQBA-UHFFFAOYSA-N chloroethene ethene ethenyl dodecanoate Chemical compound C(CCCCCCCCCCC)(=O)OC=C.C(=C)Cl.C=C VVMMWNAWPFMQBA-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 150000004756 silanes Chemical class 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 229910021532 Calcite Inorganic materials 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- 239000004890 Hydrophobing Agent Substances 0.000 claims description 2
- 229920001732 Lignosulfonate Polymers 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 2
- 239000010428 baryte Substances 0.000 claims description 2
- 229910052601 baryte Inorganic materials 0.000 claims description 2
- 239000000378 calcium silicate Substances 0.000 claims description 2
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 239000010459 dolomite Substances 0.000 claims description 2
- 229910000514 dolomite Inorganic materials 0.000 claims description 2
- 239000012784 inorganic fiber Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 239000002557 mineral fiber Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 108090000623 proteins and genes Chemical class 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 235000007173 Abies balsamea Nutrition 0.000 claims 1
- 239000004857 Balsam Substances 0.000 claims 1
- 244000018716 Impatiens biflora Species 0.000 claims 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 claims 1
- 235000010981 methylcellulose Nutrition 0.000 claims 1
- 238000009418 renovation Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000012266 salt solution Substances 0.000 description 7
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000006253 efflorescence Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 206010037844 rash Diseases 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 description 1
- 241000021559 Dicerandra Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000010654 Melissa officinalis Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000865 liniment Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000005625 siliconate group Chemical group 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- HSFQBFMEWSTNOW-UHFFFAOYSA-N sodium;carbanide Chemical group [CH3-].[Na+] HSFQBFMEWSTNOW-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- UWZSHGZRSZICIW-UHFFFAOYSA-N triethoxy(2,4,4-trimethylpentyl)silane Chemical compound CCO[Si](OCC)(OCC)CC(C)CC(C)(C)C UWZSHGZRSZICIW-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0057—Polymers chosen for their physico-chemical characteristics added as redispersable powders
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B40/0042—Powdery mixtures
Definitions
- the present invention relates to a dry mortar which is suitable for producing a plaster for a building surface. Furthermore, the use of 0.2 to 5 wt .-% of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymers, based on the dry mortar, in a Sanierputz, disclosed for accelerated construction of the hydrophobic properties of the plaster after application.
- Sanierputze special plasters for moist and saline building surfaces are on the market, which are also referred to as Sanierputze.
- Sanierputze are sold in the form of dry mortars and are suitable for the production of plasters with high porosity and water vapor permeability while reducing the capillary water pipe.
- Minimum requirements for renovation plasters and renovation plaster systems in terms of building physics are specified in DIN EN 998-1, further requirements in WTA leaflet 2-9-04.
- Sanierputze usually consist of cements, hydrated lime, sand, mineral lightweight aggregates and various additives, such as air entraining agents and
- the renovation plaster has two major effects. On the one hand, the evaporation level for moisture present in the masonry is shifted into the restoration plaster, and on the other hand, the salts present in dissolved form in the masonry are absorbed into the pores of the restoration plaster.
- Restoration plasters are predominantly used in the renovation of old buildings, both indoors and outdoors, as well as for the regeneration of moistened and salty walls; especially where it depends on particularly vapor-permeable plaster, such. As in wet rooms, cellars, bathrooms, laundries, but also in Räu- which are only occasionally heated, such as churches, apartments, halls and similar buildings.
- Repair plasters are usually applied in two layers in thicknesses of 1.5 to 3 cm. After sufficient hardening and drying of the restoration plasters, a coat or top coat can be applied. As paints but only systems may be used that are adapted to the building physics and chemical values of Sanierputzen, the water vapor permeability and hydrophobic features play thereby the decisive role.
- a cleaning system which has a buffer plaster between a sprayed-on mortar layer applied to the masonry and a restoration plaster layer.
- the buffer plaster contains surfactants as air entraining agents and absorbent lightweight aggregates, resulting in an open pore space of at least 30% by volume. Hydrophobing agents in the buffer plaster prevent a stronger water absorption. Salts present in the masonry can migrate into the buffer plaster without resulting in damage to the finally applied redeveloping plaster.
- the hydrophobizing agent used is sodium oleate. From DE 2917263 a plaster is known, which is suitable in terms of its properties, such as possible water vapor diffusion, frost resistance and prevention of condensation of water vapor on the surface as Sanierputz.
- This mortar contains a hydrophobic additive and a nonionic surfactant.
- a hydrophobic additive for example, a mixture of sodium methyl silanolate and organostannate is mentioned.
- the chemical additives must be precisely metered before the actual preparation of the plaster mortar mixture and after the mixed water, the lightweight aggregates and the cement in the mixer to give.
- Restoration render mortars are known from DD 291074 which contain sodium or potassium salts of long-chain organic fatty acids, aqueous alkali siliconate solution, alkyl monosulfonate or an alkylphenyl polyglycol ether as hydrophobizing additive.
- the previously known Sanierputze have the disadvantage that the hydrophobicity of the plaster mortar sets only after the extensive drying of the applied plaster. On heavily salinated substrates and / or under difficult drying conditions, this may cause salts to penetrate the rendering render before the hydrophobicity sets in. This leads to efflorescence of the salts on the plaster surface and can cause lasting damage to the freshly applied restoration plaster. Such problems also occur in difficult drying conditions, in which the room air is already saturated with water vapor, for example in poorly ventilated basement rooms. Furthermore, such problems may also arise because sealing measures are missing or insufficiently formed.
- the object of the present invention was therefore to provide a generic Sanie plaster, which as directly as possible after application to the building surface has sufficient hydrophobicity to prevent penetration of salts by the Sanierputz. Furthermore, performance properties of the restoration plaster such as longevity and adhesion should be improved.
- the dry mortar according to the invention suitable for the production of a plaster for a building surface. Surprisingly, it has been shown here that the plaster according to the invention also exhibits reduced crack formation after drying.
- the dry mortar comprises
- the dispersion powder contains from 0.1 to 5% by weight, based on the dispersion powder, of silanes.
- this may be triethoxy (2,4,4-trimethylpentyl) silane.
- the desired hydrophobic properties of the plaster can be improved immediately after application to the building surface.
- silanes which are suitable for the invention are disclosed, for example, in DE 4402408 on page 3, line 56 to page 4, line 28. Reference is made to DE 4402408 and the content thereof is hereby incorporated into the application.
- a dispersion powder based on an ethylene Vinyl laurate-vinyl chloride terpolymers is used.
- this may contain from 0 to 50% by weight, in particular from 0 to 30% by weight, of at least one further monomer.
- the dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer contains no further monomers.
- the air content in Sanierputzen is preferably at least 20 vol .-%, preferably more than 30 vol .-% of the total volume. This proportion is important because the air pores are important for the permanent deposition of salts in crystalline form. Surprisingly, it has been found in this connection that the sole use of other dispersion powders, for example based on ethylene-vinyl acetate, can not achieve any hydrophobization of the mortar. These dispersion powders also lead to significant disadvantages in terms of application, since the air pores which are important for the restoration plaster can not be kept stable.
- the plaster according to the invention may contain, in addition to the dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer, further additional dispersion powders, in particular based on vinyl acetate, ethylene-vinyl acetate, ethylene-vinyl acetate-vinyl versatate, ethylene-vinyl acetate-vinyl chloride, ethylene-vinyl chloride , Vinyl acetate-vinyl versatate, ethylene-vinyl acetate (meth) acrylate, vinyl acetate-vinyl versatate (meth) acrylate, (meth) acrylate, styrene-acrylate and / or styrene-butadiene, wherein vinyl versatate is a C 4 - Cn vinyl ester , wherein the other dispersion powders are preferably used in an amount of 0 to 5 wt .-%, in particular 0 to 3 wt .
- the hydraulic binder used in the plaster may be at least one of Portland cement, alumina cement and pozzolana cement, in particular Portland cement CEM I (according to DIN EN 197) and / or composite cement CEM II (according to DIN EN 197).
- the dry mortar according to the invention contains between 0 and 40 wt .-% further components, wherein the other components to at least one of the series thickener, water retention agents, dispersants, Rheologievertropicer, air entrainers, retarders, accelerators, water repellents, additives, pigments, organic or inorganic fibers.
- At least one of the series tall and balm resins, alkyl sulfates and / or salts thereof, lignosulfonates, gas formers, carboxyl compounds and / or their salts and protein acids is preferably used as the air entraining agent, in particular in one Amount of 0.01 to 0.5 wt .-% based on the dry mortar, which is preferably sodium lauryl sulfate.
- the gas formers may be metals, in particular aluminum and zinc, which form hydrogen in the applied mortar.
- fibers can be added to the plaster, preferably being at least one of the series of cellulose fibers, carbon fibers, mineral fibers and plastic fibers, in particular glass fibers.
- the water retention agent may in particular be methylcellulose and / or a water-soluble or water-swellable sulfo-containing copolymer, in particular in an amount of 0.05 to 2 wt .-%, preferably 0.1 to 1, 0 wt .-%.
- the sulfo-containing copolymers may, for example, be compounds as described in DE 10037629. With regard to the sulfo-containing copolymers contained, reference is made to the patent applications DE 10037629, WO 20081 13460 and WO 2005090424, the content of which is hereby incorporated into the application.
- the desired hydrophobic properties of the plaster can be further improved by the addition of the known water repellents.
- it is at least one hydrophobizing agent from the series fatty acids and / or their salts and silicones.
- the hydrophobizing agents in an amount of 0.05 to 1, 0 wt .-%, preferably 0.1 to 0.5 wt .-%, based on the dry mortar, containing, in particular sodium oleate, zinc stearate, magnesium stearate and / or aluminum stearate.
- a large proportion of the dry mortar may consist of fillers, preferably at least one of chalk, quartz sand, quartz powder, calcite, dolomite, talc, kaolin, mica, barite, pumice, perlite, mineral foam, foam beads, pumice, expanded glass, Hollow glass beads, vermiculite and calcium silicate hydrate is.
- the dry mortar contains light fillers, in particular perlite, pumice and vermiculite. As a result, additional pore space can be introduced into the plaster.
- Light fillers are preferably used in amounts of 2 to 20 wt .-%, in particular 3 to 10 wt .-%.
- dry mortar according to the invention When used dry mortar according to the invention are mixed with water, per kilogram of dry mortar about 420 ml of water are used.
- the addition of the water is carried out in a cleaning machine or in a container with vigorous stirring with appropriately suitable stirring devices, e.g. one
- a basket stirrer which is attached to a slow-moving drill (about 400 revolutions per minute). gen / min.).
- a particular advantage of the plaster according to the invention is that it can be applied in one layer and a buffer plaster or ground plaster is not necessary.
- the plaster according to the invention is preferably applied to the building surface in layer thicknesses of between 1.5 and 5 cm, preferably 2 and 4 cm.
- a further aspect of the present invention provides 0.2 to 5 wt .-% of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymers, based on the dry mortar, in a Sanierputz to use for accelerated construction of the hydrophobic properties of the plaster after application ,
- the restoration plaster according to the invention is in particular a restoration render as defined by WTA Leaflet 2-9-04. It is preferably a plaster based on a dry mortar according to the invention.
- the plaster according to the invention forms the hydrophobic properties very quickly, even in wet and / or very wet substrates and / or difficult drying conditions.
- the plaster according to the invention has sufficient hydrophobic properties already after 10 days, preferably 5 days, in particular 3 days and particularly preferably 2 days.
- the hydrophobic properties of the plaster can be measured by various methods. Particularly suitable for this purpose are the "modified salt test” and the “visual test for checking the hydrophobicity", as described in the examples.
- Amount of mixing water 440 g / kg powder
- Dry mortar 2 (according to the invention):
- Amount of mixing water 420 g / kg powder
- Disc-shaped specimens are produced on a flat, non-absorbent surface without release agent.
- the specimens are first placed in the mold for 2 days in a humidity chamber at 95 ⁇ 5% relative humidity or tightly enclosed in a plastic bag. Then they are disassembled and stored for 5 days on a grid with triangular bars under the same conditions. This is followed by a 21-day storage at 65 ⁇ 5% relative humidity. The storage temperature is 20 ⁇ 2 ° C.
- the dimensions of the specimens are:
- WTA salt solution contains the multiple amount of salts which in practice is considered to be harmful and is prepared as follows: The following quantities of salt are added to 1 liter of deionized water:
- the specimens are first dried for 3 days in a drying oven at 40 ° C. They are then placed with the formwork side down on three superimposed filter plates (Schleicher + Schull, Order No. 2727), which are located in a shallow dish with non-profiled bottom. Afterwards, WTA salt solution is carefully poured in at the edge of the bowl so that the bottom of the pane is wetted. The trays are covered with a plate having recesses the size of the test discs. Storage is carried out under standard conditions (20 ⁇ 1 ° C and 65% relative humidity). During the test period, so much salt solution must be added so that the underside of the disc is constantly wetted.
- Test specimen preparation for modified salt test :
- Disc-shaped specimens are produced on a flat, non-absorbent surface without release agent.
- the specimens are placed in the mold for 2 days in a humidity chamber at 95 ⁇ 5% relative humidity or tightly enclosed in a plastic bag.
- the storage temperature is 20 ⁇ 2 ° C.
- several test specimens are produced and discarded with a higher mass deviation.
- the dimensions of the specimens are: - Discs, diameter> 100 mm, thickness 20 mm
- WTA Saline Solution contains the multiple amount of salts that is considered harmful in practice and is prepared as follows:
- test specimens are placed with the formwork side down on three filter plates (Schleicher + Schüll, Order No. 2727) one above the other, which are located in a shallow dish with non-profiled bottom. Afterwards, WTA salt solution is carefully poured in at the edge of the bowl so that the bottom of the pane is wetted. The trays are covered with a plate having recesses the size of the test discs. Storage is carried out under standard conditions (20 ⁇ 1 ° C and 65% relative humidity). During the test period, so much salt solution must be added so that the underside of the disc is constantly wetted.
- test specimen prepared according to WTA leaflet (6.1 .3) was broken after 24 hours storage in two halves of approximately equal size and a drop of water was applied to the fracture site by means of a syringe with needle (cannula inside diameter: 0.5 mm). The suction behavior and the contact angle of the water droplet were observed.
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Abstract
The invention relates to a dry mortar suitable for producing a render for a surface of a building, which comprises from 0 to 50% by weight of hydraulic binders, from 0 to 35% by weight of calcium hydroxide, from 20 to 86% by weight of fillers, from 0.2 to 5% by weight of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer and from 0 to 40% by weight of further components, where hydraulic binders and calcium hydroxide together make up at least 8% by weight of the dry mortar. Furthermore, the use of from 0.2 to 5% by weight of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer, based on the dry mortar, in a renovation render for accelerated buildup of the hydrophobic properties of the render after application is disclosed.
Description
Trockenmörtel und dessen Verwendung als Putz Dry mortar and its use as plaster
Die vorliegende Erfindung betrifft einen Trockenmörtel, welcher zur Herstellung eines Putzes für eine Gebäudeoberfläche geeignet ist. Weiterhin wird die Verwendung von 0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines Ethylen-Vinyllaurat-Vinylchlorid- Terpolymeren, bezogen auf den Trockenmörtel, in einem Sanierputz, zum beschleunigten Aufbau der hydrophoben Eigenschaften des Putzes nach Applikation offenbart. The present invention relates to a dry mortar which is suitable for producing a plaster for a building surface. Furthermore, the use of 0.2 to 5 wt .-% of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymers, based on the dry mortar, in a Sanierputz, disclosed for accelerated construction of the hydrophobic properties of the plaster after application.
Bei traditionell errichteten Gebäuden kann es infolge fehlender oder schadhafter Hori- zontalsperre und/oder örtlicher Bedingungen, beispielsweise geringer oder periodisch wechselnder Grundwasserspiegel, zur ständigen Durchfeuchtung des Mauerwerks kommen. Dabei werden aus dem Fugenmörtel und den Ziegeln Salze gelöst, die bei der Verdunstung an der Außenseite des Gebäudes gemeinsam mit den im Wasser bereits umweltbedingt gelösten Salzen auskristallisieren. Dies geschieht auf der sicht- baren Oberfläche des eventuell noch vorhandenen Altputzes oder auf der Oberfläche des nackten Mauerwerks. Es kommt dabei nicht nur zu den bekannten störenden Ausblühungen, sondern auch zu einer ständig steigenden Konzentration von bauschädlichen Salzen an der Oberfläche und im oberflächennahen Bereich des Mauerwerks. Der Kristallisationsdruck der im oberflächennahen Bereich befindlichen Salze führt dann in der Regel zum Absprengen des vorhandenen Putzmörtels. In the case of traditionally constructed buildings, permanent or permanent dampening of the masonry can occur as a result of missing or defective horizontal barrier and / or local conditions, such as low or periodically changing groundwater levels. In the process, salts are dissolved out of the joint mortar and the bricks which, on evaporation, crystallize out on the outside of the building together with the salts already dissolved in the water due to the environment. This is done on the visible surface of the existing old plaster or on the surface of the bare masonry. It comes not only to the known disturbing efflorescence, but also to a constantly increasing concentration of destructive salts on the surface and near the surface of the masonry. The crystallization pressure of the salts located in the near-surface region then usually leads to the blasting off of the existing plaster mortar.
Seit etwa 35 Jahren sind Spezialputze für feuchte und salzhaltige Gebäudeoberflächen auf dem Markt, welche auch als Sanierputze bezeichnet werden. Sanierputze werden in Form von Trockenmörteln verkauft und sind zur Herstellung von Putzen mit hoher Porosität und Wasserdampfdurchlässigkeit bei gleichzeitiger Verminderung der kapillaren Wasserleitung geeignet. Mindestanforderungen an Sanierputze und Sanierputzsysteme in bauphysikalischer Hinsicht sind in DIN EN 998-1 festgelegt, weitergehende Anforderungen im WTA- Merkblatt 2-9-04. Sanierputze bestehen in der Regel aus Zementen, Kalkhydrat, Sand, mineralischen Leichtzuschlägen sowie verschiedenen Additiven, wie Luftporenbildnern und For about 35 years, special plasters for moist and saline building surfaces are on the market, which are also referred to as Sanierputze. Sanierputze are sold in the form of dry mortars and are suitable for the production of plasters with high porosity and water vapor permeability while reducing the capillary water pipe. Minimum requirements for renovation plasters and renovation plaster systems in terms of building physics are specified in DIN EN 998-1, further requirements in WTA leaflet 2-9-04. Sanierputze usually consist of cements, hydrated lime, sand, mineral lightweight aggregates and various additives, such as air entraining agents and
Hydrophobierungsmitteln. Water repellents.
Der Sanierputz hat zwei wesentliche Effekte. Zum einen wird die Verdunstungsebene für im Mauerwerk befindliche Feuchtigkeit in den Sanierputz verlagert und zum anderen werden die im Mauerwerk in gelöster Form vorliegenden Salze in die Poren des Sanierputzes aufgenommen. The renovation plaster has two major effects. On the one hand, the evaporation level for moisture present in the masonry is shifted into the restoration plaster, and on the other hand, the salts present in dissolved form in the masonry are absorbed into the pores of the restoration plaster.
Überwiegend werden Sanierputze bei der Altbausanierung eingesetzt, sowohl im In- nen- als auch im Außenbereich, sowie für die Regeneration von durchfeuchteten und salzhaltigen Mauern; speziell dort, wo es auf besonders diffusionsoffene Putze ankommt, wie z. B. in Feuchträumen, Kellern, Bädern, Wäschereien, aber auch in Räu-
men, die nur gelegentlich beheizt werden, wie Kirchen, Ferienwohnungen, Hallen und ähnlichen Gebäuden. Restoration plasters are predominantly used in the renovation of old buildings, both indoors and outdoors, as well as for the regeneration of moistened and salty walls; especially where it depends on particularly vapor-permeable plaster, such. As in wet rooms, cellars, bathrooms, laundries, but also in Räu- which are only occasionally heated, such as churches, apartments, halls and similar buildings.
Sanierputze werden gewöhnlich zweilagig in Schichtstärken von 1 ,5 bis 3 cm aufgetra- gen. Nach ausreichender Härtung und Trocknung des Sanierputzes kann ein Anstrich oder ein Oberputz aufgebracht werden. Als Anstriche dürfen aber nur Systeme verwendet werden, die den bauphysikalischen und -chemischen Werten von Sanierputzen angepasst sind, die Wasserdampfdurchlässigkeit und hydrophobe Ausstattung spielen dabei die ausschlaggebende Rolle. Repair plasters are usually applied in two layers in thicknesses of 1.5 to 3 cm. After sufficient hardening and drying of the restoration plasters, a coat or top coat can be applied. As paints but only systems may be used that are adapted to the building physics and chemical values of Sanierputzen, the water vapor permeability and hydrophobic features play thereby the decisive role.
In der DE 3512322 wird ein Putzsystem vorgeschlagen, das zwischen einer auf das Mauerwerk aufgetragenen Spritzwurfmörtelschicht und einer Sanierputzschicht einen Pufferputz aufweist. Der Pufferputzmörtel enthält Tenside als Luftporenbildner und saugfähige Leichtzuschlagstoffe, die zu einem offenen Porenraum von mindestens 30 Vol-% führen. Hydrophobierungsmittel im Pufferputz verhindern eine stärkere Wasseraufnahme. Im Mauerwerk vorhandene Salze können in den Pufferputz hineinwandern, ohne zu einer Schädigung des abschließend aufgebrachten Sanierputzes zu führen. Als Hydrophobierungsmittel kommt Natriumoleat zum Einsatz. Aus der DE 2917263 ist ein Putzmörtel bekannt, der hinsichtlich seiner Eigenschaften, wie mögliche Wasserdampfdiffusion, Frostbeständigkeit und Verhinderung der Kondensation von Wasserdampf an der Oberfläche, als Sanierputz geeignet ist. Dieser Mörtel enthält einen hydrophoben Zusatz und ein nichtionisches Tensid. Insbesondere eine organische Alkoxylsäure oder Alkoxylalkohole, deren Amine oder Gemische. Als hydrophober Zusatz wird beispielsweise eine Mischung von Natriummethylsilanolat und Organostannat genannt. Die chemischen Zusätze sind vor der eigentlichen Herstellung der Putzmörtelmischung genau zu dosieren und nach dem Mischwasser, den Leichtzuschlagstoffen und dem Zement in den Mischer zu geben. In DE 3512322 a cleaning system is proposed which has a buffer plaster between a sprayed-on mortar layer applied to the masonry and a restoration plaster layer. The buffer plaster contains surfactants as air entraining agents and absorbent lightweight aggregates, resulting in an open pore space of at least 30% by volume. Hydrophobing agents in the buffer plaster prevent a stronger water absorption. Salts present in the masonry can migrate into the buffer plaster without resulting in damage to the finally applied redeveloping plaster. The hydrophobizing agent used is sodium oleate. From DE 2917263 a plaster is known, which is suitable in terms of its properties, such as possible water vapor diffusion, frost resistance and prevention of condensation of water vapor on the surface as Sanierputz. This mortar contains a hydrophobic additive and a nonionic surfactant. In particular, an organic alkoxylic acid or alkoxyl alcohols, their amines or mixtures. As a hydrophobic additive, for example, a mixture of sodium methyl silanolate and organostannate is mentioned. The chemical additives must be precisely metered before the actual preparation of the plaster mortar mixture and after the mixed water, the lightweight aggregates and the cement in the mixer to give.
Aus der DD 291074 sind Sanierputzmörtel bekannt, welche als hydrophobierenden Zusatz Natrium- oder Kaliumsalze langkettiger organischer Fettsäuren, wäßrige Alkali- siliconat-Lösung, Alkylmonosulfonat oder einen Alkylphenylpolyglykolether enthalten. Restoration render mortars are known from DD 291074 which contain sodium or potassium salts of long-chain organic fatty acids, aqueous alkali siliconate solution, alkyl monosulfonate or an alkylphenyl polyglycol ether as hydrophobizing additive.
Die bisher bekannten Sanierputze haben allerdings den Nachteil, dass sich die Hydrophobie des Putzmörtels erst nach der weitgehenden Trocknung des aufgebrachten Putzes einstellt. Bei stark versalzten Untergründen und/oder unter schwierigen Trocknungsbedingungen führt dies dazu, dass Salze den Sanierputz durchdringen können bevor sich die Hydrophobie einstellt. Dies führt zu Ausblühungen der Salze auf der Putzoberfläche und kann den frisch aufgebrachten Sanierputz nachhaltig schädigen. Derartige Probleme treten auch bei schwierigen Trocknungsbedingungen auf, bei de- nen die Raumluft bereits mit Wasserdampf gesättigt ist, beispielsweise in schlecht gelüfteten Kellerräumen. Weiterhin können derartige Probleme auch dadurch entstehen, daß Abdichtungsmaßnahmen fehlen oder unzureichend ausgebildet sind.
Aufgabe der vorliegenden Erfindung war es deshalb, einen gattungsgemäßen Sanie- putz bereitzustellen, welcher möglichst direkt nach Auftragung auf die Gebäudeoberfläche eine ausreichende Hydrophobie aufweist, um ein Durchdringen von Salzen durch den Sanierputz zu verhindern. Weiterhin sollten anwendungstechnische Eigenschaften des Sanierputzes wie Langlebigkeit und Haftung verbessert werden. However, the previously known Sanierputze have the disadvantage that the hydrophobicity of the plaster mortar sets only after the extensive drying of the applied plaster. On heavily salinated substrates and / or under difficult drying conditions, this may cause salts to penetrate the rendering render before the hydrophobicity sets in. This leads to efflorescence of the salts on the plaster surface and can cause lasting damage to the freshly applied restoration plaster. Such problems also occur in difficult drying conditions, in which the room air is already saturated with water vapor, for example in poorly ventilated basement rooms. Furthermore, such problems may also arise because sealing measures are missing or insufficiently formed. The object of the present invention was therefore to provide a generic Sanie plaster, which as directly as possible after application to the building surface has sufficient hydrophobicity to prevent penetration of salts by the Sanierputz. Furthermore, performance properties of the restoration plaster such as longevity and adhesion should be improved.
Gelöst wurde diese Aufgabe durch einen Trockenmörtel, geeignet zur Herstellung eines Putzes für eine Gebäudeoberfläche, umfassend, This object has been achieved by a dry mortar suitable for producing a plaster for a building surface, comprising
0 bis 50 Gew.-% hydraulische Bindemittel, 0 to 50% by weight of hydraulic binders,
0 bis 35 Gew.-% Calciumhydroxid, 0 to 35% by weight of calcium hydroxide,
20 bis 86 Gew.-% Füllstoffe, From 20 to 86% by weight of fillers,
0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines 0.2 to 5 wt .-% of dispersion powder based on a
Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren und 0 bis 40 Gew.-% weitere Komponenten, Ethylene-vinyl laurate-vinyl chloride terpolymers and 0 to 40% by weight of further components,
wobei hydraulische Bindemittel und Calciumhydroxid gemeinsam being hydraulic binders and calcium hydroxide in common
mindestens 8 Gew.-% des Trockenmörtels ausmachen. make up at least 8% by weight of the dry mortar.
Die Aufgabenstellung in Bezug auf sämtliche Vorgaben konnte durch den erfindungs- gemäßen Trockenmörtel, geeignet zur Herstellung eines Putzes für eine Gebäudeoberfläche, vollständig gelöst werden. Überraschend hat sich hierbei gezeigt, dass der erfindungsgemäße Putz nach dem Trocknen weiterhin eine verminderte Rissbildung aufweist. In einer bevorzugten Ausführungsform umfasst der Trockenmörtel The task in relation to all specifications could be completely solved by the dry mortar according to the invention, suitable for the production of a plaster for a building surface. Surprisingly, it has been shown here that the plaster according to the invention also exhibits reduced crack formation after drying. In a preferred embodiment, the dry mortar comprises
12 bis 50 Gew.-% hydraulische Bindemittel, From 12 to 50% by weight of hydraulic binders,
1 bis 12 Gew.-% Calciumhydroxid, From 1 to 12% by weight of calcium hydroxide,
20 bis 86 Gew.-% Füllstoffe, From 20 to 86% by weight of fillers,
0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines 0.2 to 5 wt .-% of dispersion powder based on a
Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren und Ethylene vinyl laurate vinyl chloride terpolymers and
0 bis 40 Gew.-% weitere Komponenten. 0 to 40 wt .-% further components.
Es hat sich im Rahmen der Erfindung als besonders vorteilhaft erwiesen, wenn das Dispersionspulver 0,1 bis 5 Gew.-%, bezogen auf das Dispersionspulver, Silane ent- hält. Insbesondere kann es sich hierbei um Triethoxy(2,4,4-trimethylpentyl)silan handeln. Hierdurch können die gewünschten hydrophoben Eigenschaften des Putzes unmittelbar nach dem Auftragen auf die Gebäudeoberfläche noch verbessert werden. Weitere für die Erfindung geeignete Silane werden bspw. in der DE 4402408 auf Seite 3, Zeile 56 bis Seite 4, Zeile 28 offenbart. Auf die DE 4402408 wird Bezug genommen und deren Inhalt wird hiermit in die Anmeldung aufgenommen. It has proved to be particularly advantageous in the context of the invention if the dispersion powder contains from 0.1 to 5% by weight, based on the dispersion powder, of silanes. In particular, this may be triethoxy (2,4,4-trimethylpentyl) silane. As a result, the desired hydrophobic properties of the plaster can be improved immediately after application to the building surface. Further silanes which are suitable for the invention are disclosed, for example, in DE 4402408 on page 3, line 56 to page 4, line 28. Reference is made to DE 4402408 and the content thereof is hereby incorporated into the application.
Es ist erfindungswesentlich, dass ein Dispersionspulver auf Basis eines Ethylen-
Vinyllaurat-Vinylchlorid-Terpolymeren eingesetzt wird. Dieses kann in einer speziellen Ausführungsform 0 bis 50 Gew.-%, insbesondere 0 bis 30 Gew.-%, mindestens eines weiteren Monomeren enthalten. Bevorzugt enthält das Dispersionspulver auf Basis eines Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren keine weiteren Monomere. It is essential to the invention that a dispersion powder based on an ethylene Vinyl laurate-vinyl chloride terpolymers is used. In a specific embodiment, this may contain from 0 to 50% by weight, in particular from 0 to 30% by weight, of at least one further monomer. Preferably, the dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer contains no further monomers.
Der Luftgehalt in Sanierputzen liegt bevorzugt bei mindestens 20 Vol.-%, bevorzugt mehr als 30 Vol.-% des gesamten Volumens. Dieser Anteil ist wichtig, denn die Luftporen sind für das dauerhafte Ablagern von Salzen in kristalliner Form wichtig. Überraschend wurde in diesem Zusammenhang gefunden, dass beim alleinigen Einsatz an- derer Dispersionspulver, beispielsweise auf Basis von Ethylen-Vinylacetat, keine Hydrophobierung des Mörtels erreicht werden kann. Diese Dispersionspulver führen auch zu deutlichen anwendungstechnischen Nachteilen, da die für den Sanierputz wichtigen Luftporen nicht stabil gehalten werden können. Der erfindungsgemäße Putz kann aber neben dem erfindungswesentlichen Dispersionspulver auf Basis eines Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren zusätzlich weitere Dispersionspulver enthalten, insbesondere auf Basis Vinylacetat, Ethylen- Vinylacetat, Ethylen-Vinylacetat-Vinylversatat, Ethylen-Vinylacetat-Vinylchlorid, Ethy- len-Vinylchlorid, Vinylacetat-Vinylversatat, Ethylen-Vinylacetat-(Meth)acrylat, Vinylace- tat-Vinylversatat-(Meth)acrylat, (Meth)acrylat, Styrol-Acrylat und/oder Styrol-Butadien, wobei Vinylversatat ein C4 - Cn-Vinylester ist, wobei die weiteren Dispersionspulver bevorzugt in einer Menge von 0 bis 5 Gew.-%, insbesondere 0 bis 3 Gew.-% eingesetzt werden. Die genannten Dispersionspulver auf Basis von getrockneten Kunststoffdispersionen sind im Handel erhältlich. Weitere für die Erfindung geeignete zusätzliche Dispersionspulver werden bspw. in der EP 1 892 228 B1 auf Seite 3, Zeile 46 bis Seite 6, Zeile 13 offenbart. Auf die EP 1 892 228 B1 wird Bezug genommen und deren Inhalt wird hiermit in die Anmeldung aufgenommen. The air content in Sanierputzen is preferably at least 20 vol .-%, preferably more than 30 vol .-% of the total volume. This proportion is important because the air pores are important for the permanent deposition of salts in crystalline form. Surprisingly, it has been found in this connection that the sole use of other dispersion powders, for example based on ethylene-vinyl acetate, can not achieve any hydrophobization of the mortar. These dispersion powders also lead to significant disadvantages in terms of application, since the air pores which are important for the restoration plaster can not be kept stable. However, the plaster according to the invention may contain, in addition to the dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymer, further additional dispersion powders, in particular based on vinyl acetate, ethylene-vinyl acetate, ethylene-vinyl acetate-vinyl versatate, ethylene-vinyl acetate-vinyl chloride, ethylene-vinyl chloride , Vinyl acetate-vinyl versatate, ethylene-vinyl acetate (meth) acrylate, vinyl acetate-vinyl versatate (meth) acrylate, (meth) acrylate, styrene-acrylate and / or styrene-butadiene, wherein vinyl versatate is a C 4 - Cn vinyl ester , wherein the other dispersion powders are preferably used in an amount of 0 to 5 wt .-%, in particular 0 to 3 wt .-%. The abovementioned dispersion powders based on dried plastic dispersions are commercially available. Further additional dispersion powders suitable for the invention are disclosed, for example, in EP 1 892 228 B1 on page 3, line 46 to page 6, line 13. Reference is made to EP 1 892 228 B1 and the content thereof is hereby incorporated into the application.
Bei dem im Putz eingesetzten hydraulischen Bindemittel kann es sich um mindestens eines aus der Reihe Portlandzement, Tonerdeschmelzzement und Puzzolanzement handelt, insbesondere um Portlandzement CEM I (nach DIN EN 197) und/oder Kompositzement CEM II (nach DIN EN 197). The hydraulic binder used in the plaster may be at least one of Portland cement, alumina cement and pozzolana cement, in particular Portland cement CEM I (according to DIN EN 197) and / or composite cement CEM II (according to DIN EN 197).
Der erfindungsgemäße Trockenmörtel enthält zwischen 0 und 40 Gew.-% weitere Komponenten, wobei es sich bei den weiteren Komponenten um mindestens eine aus der Reihe Verdicker, Wasserretentionsmittel, Dispergiermittel, Rheologieverbesserer, Luftporenbildner, Verzögerer, Beschleuniger, Hydrophobierungsmittel, Zusatzstoffe, Pigmente, organische oder anorganische Fasern handelt. The dry mortar according to the invention contains between 0 and 40 wt .-% further components, wherein the other components to at least one of the series thickener, water retention agents, dispersants, Rheologieverbesserer, air entrainers, retarders, accelerators, water repellents, additives, pigments, organic or inorganic fibers.
Als Luftporenbildner wird bevorzugt mindestens einer aus der Reihe Tall- und Balsamharze, Alkylsulfate und/oder deren Salze, Ligninsulfonate, Gasbildner, Carboxylverbin- dungen und/oder deren Salze und Proteinsäuren eingesetzt, insbesondere in einer
Menge von 0,01 bis 0,5 Gew.-% bezogen auf den Trockenmörtel, wobei es sich bevorzugt um Natriumlaurylsulfat handelt. Bei den Gasbildnern kann es sich um Metalle, insbesondere Aluminium und Zink handeln, welche im angesetzten Mörtel Wasserstoff bilden. At least one of the series tall and balm resins, alkyl sulfates and / or salts thereof, lignosulfonates, gas formers, carboxyl compounds and / or their salts and protein acids is preferably used as the air entraining agent, in particular in one Amount of 0.01 to 0.5 wt .-% based on the dry mortar, which is preferably sodium lauryl sulfate. The gas formers may be metals, in particular aluminum and zinc, which form hydrogen in the applied mortar.
Vorteilhaft können dem Putz Fasern zugesetzt werden, wobei es sich bevorzugt um mindestens eine aus der Reihe Cellulose-Fasern, Carbon-Fasern, Mineral-Fasern und Kunststoff-Fasern handelt, insbesondere um Glasfasern. Bei dem Wasserretentionsmittel kann es sich insbesondere um Methylcellulose und/oder ein wasserlösliches oder wasserquellbares sulfogruppenhaltiges Copolymer handeln, insbesondere in einer Menge von 0,05 bis 2 Gew.-%, vorzugsweise 0,1 bis 1 ,0 Gew.-%. Bei den sulfogruppenhaltigen Copolymeren kann es sich beispielsweise um Verbindungen handeln wie diese in der DE 10037629 beschrieben werden. Bezüg- lieh der enthaltenen sulfogruppenhaltigen Copolymeren wird auf die Patentanmeldungen DE 10037629, WO 20081 13460 sowie WO 2005090424 Bezug genommen, deren Inhalt hiermit in die Anmeldung aufgenommen wird. Advantageously, fibers can be added to the plaster, preferably being at least one of the series of cellulose fibers, carbon fibers, mineral fibers and plastic fibers, in particular glass fibers. The water retention agent may in particular be methylcellulose and / or a water-soluble or water-swellable sulfo-containing copolymer, in particular in an amount of 0.05 to 2 wt .-%, preferably 0.1 to 1, 0 wt .-%. The sulfo-containing copolymers may, for example, be compounds as described in DE 10037629. With regard to the sulfo-containing copolymers contained, reference is made to the patent applications DE 10037629, WO 20081 13460 and WO 2005090424, the content of which is hereby incorporated into the application.
Die gewünschten hydrophoben Eigenschaften des Putzes können durch den Zusatz der bekannten Hydrophobierungsmittel weiter verbessert werden. Insbesondere handelt es sich um mindestens ein Hydrophobierungsmittel aus der Reihe Fettsäuren und/oder deren Salze und Silicone. Insbesondere sind die Hydrophobierungsmittel in einer Menge von 0,05 bis 1 ,0 Gew.-%, bevorzugt 0,1 bis 0,5 Gew.-%, bezogen auf den Trockenmörtel, enthalten, wobei es sich insbesondere um Natriumoleat, Zinkstearat, Magnesiumstearat und/oder Aluminiumstearat handelt. The desired hydrophobic properties of the plaster can be further improved by the addition of the known water repellents. In particular, it is at least one hydrophobizing agent from the series fatty acids and / or their salts and silicones. In particular, the hydrophobizing agents in an amount of 0.05 to 1, 0 wt .-%, preferably 0.1 to 0.5 wt .-%, based on the dry mortar, containing, in particular sodium oleate, zinc stearate, magnesium stearate and / or aluminum stearate.
Ein großer Teil des Trockenmörtels kann aus Füllstoffen bestehen, wobei es sich bevorzugt um mindestens einen aus der Reihe Kreide, Quarzsand, Quarzmehl, Calcit, Dolomit, Talkum, Kaolin, Glimmer, Schwerspat, Bimsmehl, Perlit, Mineralschaum, Schaumperlen, Bims, Blähglas, Hohlglaskugeln, Vermiculit und Calciumsilikat-Hydrat handelt. Insbesondere bei der Verarbeitung des Trockenmörtels in Putzmaschinen ist es vorteilhaft, wenn der Trockenmörtel Leichtfüllstoffe enthält, insbesondere Perlit, Bims und Vermiculit. Hierdurch kann zusätzlicher Porenraum in den Putz eingebracht werden. Leichtfüllstoffe werden bevorzugt in Mengen von 2 bis 20 Gew.-%, insbeson- dere 3 bis 10 Gew.-% eingesetzt. A large proportion of the dry mortar may consist of fillers, preferably at least one of chalk, quartz sand, quartz powder, calcite, dolomite, talc, kaolin, mica, barite, pumice, perlite, mineral foam, foam beads, pumice, expanded glass, Hollow glass beads, vermiculite and calcium silicate hydrate is. In particular, when processing the dry mortar in plastering machines, it is advantageous if the dry mortar contains light fillers, in particular perlite, pumice and vermiculite. As a result, additional pore space can be introduced into the plaster. Light fillers are preferably used in amounts of 2 to 20 wt .-%, in particular 3 to 10 wt .-%.
Bei ihrer Verwendung werden die erfindungsgemäßen Trockenmörtel mit Wasser angemacht, wobei pro Kilogramm Trockenmörtel ca. 420 ml Wasser verwendet werden. Die Zugabe des Wassers erfolgt in einer Putzmaschine oder in einem Behältnis unter kräftigem Rühren mit entsprechend geeigneten Rührvorrichtungen, z.B. einem When used dry mortar according to the invention are mixed with water, per kilogram of dry mortar about 420 ml of water are used. The addition of the water is carried out in a cleaning machine or in a container with vigorous stirring with appropriately suitable stirring devices, e.g. one
Korbrührer, den man an eine langsam laufende Bohrmaschine (ca. 400 Umdrehun-
gen/min.) anschließen kann. A basket stirrer, which is attached to a slow-moving drill (about 400 revolutions per minute). gen / min.).
Ein besonderer Vorteil des erfindungsgemäßen Putzes ist es, dass dieser einlagig aufgetragen werden kann und ein Pufferputz oder Grundputz nicht notwendig ist. Der er- findungsgemäße Putz wird bevorzugt in Schichtdicken zwischen 1 ,5 und 5 cm, bevorzugt 2 und 4 cm, auf die Gebäudeoberfläche aufgebracht. A particular advantage of the plaster according to the invention is that it can be applied in one layer and a buffer plaster or ground plaster is not necessary. The plaster according to the invention is preferably applied to the building surface in layer thicknesses of between 1.5 and 5 cm, preferably 2 and 4 cm.
Ein weiterer Aspekt der vorliegenden Erfindung sieht vor 0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren, bezogen auf den Trockenmörtel, in einem Sanierputz, zum beschleunigten Aufbau der hydrophoben Eigenschaften des Putzes nach Applikation zu verwenden. A further aspect of the present invention provides 0.2 to 5 wt .-% of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymers, based on the dry mortar, in a Sanierputz to use for accelerated construction of the hydrophobic properties of the plaster after application ,
Bei dem erfindungsgemäßen Sanierputz handelt es sich insbesondere um einen Sanierputz nach Definition des WTA Merkblatts 2-9-04. Bevorzugt handelt es sich um einen Putz auf Basis eines erfindungsgemäßen Trockenmörtels. The restoration plaster according to the invention is in particular a restoration render as defined by WTA Leaflet 2-9-04. It is preferably a plaster based on a dry mortar according to the invention.
Sanierputze nach dem Stand der Technik weisen erst nach weitgehender Trocknung des Mörtels eine ausreichende Hydrophobie auf um einen Durchschlag von Salzen zu verhindern, was in der Regel einige Tage in Anspruch nehmen kann. Ein schnelleres Trocknen des Putzes ist nicht erwünscht, da es hierdurch zu vermehrter Rissbildung kommen kann. Unter einem beschleunigtem Aufbau der Hydrophobie wird in diesem Zusammenhang verstanden, dass die hydrophoben Eigenschaften bereits vor der weitgehenden Trocknung ausgebildet werden. Überraschend bildet der erfindungsgemäße Putz die hydrophoben Eigenschaften auch bei nassen und/oder stark feuchten Untergründen und/oder schwierigen Trocknungsbedingungen sehr schnell auf. Insbesondere weist der erfindungsgemäße Putz ausreichende hydrophobe Eigenschaften bereits nach 10 Tagen, bevorzugt 5 Tagen, insbesondere 3 Tagen und besonders bevorzugt 2 Tagen auf. Insbesondere stehen ausreichende hydrophobe Eigenschaften des Mörtels, welche einen Durchschlag von Salzen verhindern, bereits direkt nach dem Ansteifen des Mörtels auf die Gebäudeoberfläche zur Verfügung. Sanierputze according to the prior art have only after extensive drying of the mortar on a sufficient hydrophobicity to prevent a breakdown of salts, which can take up to a few days usually. A faster drying of the plaster is not desirable because this can lead to increased cracking. An accelerated structure of the hydrophobicity is understood in this context to mean that the hydrophobic properties are already formed before extensive drying. Surprisingly, the plaster according to the invention forms the hydrophobic properties very quickly, even in wet and / or very wet substrates and / or difficult drying conditions. In particular, the plaster according to the invention has sufficient hydrophobic properties already after 10 days, preferably 5 days, in particular 3 days and particularly preferably 2 days. In particular, sufficient hydrophobic properties of the mortar, which prevent a breakdown of salts, already available directly after the mortar stiffening on the building surface.
Die hydrophoben Eigenschaften des Putzes lassen sich mit verschiedenen Verfahren messen. Insbesondere eignen sich hierzu der„modifizierte Salztest" und der„visuelle Test zur Überprüfung der Hydrophobie", wie diese in den Beispielen beschrieben wer- den. The hydrophobic properties of the plaster can be measured by various methods. Particularly suitable for this purpose are the "modified salt test" and the "visual test for checking the hydrophobicity", as described in the examples.
Die nachfolgenden Beispiele verdeutlichen die Vorteile der vorliegenden Erfindung.
Beispiele The following examples illustrate the advantages of the present invention. Examples
Trockenmörtel 1 (Vergleich): Dry mortar 1 (comparison):
7 % Kalkhydrat CL 80 7% hydrated lime CL 80
21 ,5 % Zement CEM I 52,5 21, 5% cement CEM I 52.5
21 % Kalksteinmehl 0-0,2 mm 21% limestone flour 0-0.2 mm
8% Quarzsand 0,1 -0,3 mm 8% quartz sand 0.1-0.3 mm
37 % Quarzsand 0,1 -1 ,5 mm 37% quartz sand 0.1 -1, 5 mm
5 % Leichtfüllstoff Perlite 0-2 5% light filler Perlite 0-2
0,04 % Luftporenbildner auf Natriumlaurylsulfat Basis 0.04% air entraining agent based on sodium lauryl sulfate
0,2 % Natriumoleat 0.2% sodium oleate
0,2 % modifizierte Methylcellulose 0.2% modified methylcellulose
0,06 % 6 mm Glasfasern (STW) 0.06% 6 mm glass fibers (STW)
Anmachwassermenge: 440 g/kg Pulver Amount of mixing water: 440 g / kg powder
Trockenmörtel 2 (erfindungsgemäß): Dry mortar 2 (according to the invention):
7 % Kalkhydrat CL 80 7% hydrated lime CL 80
21 ,5 % Zement CEM I 52,5 21, 5% cement CEM I 52.5
20% Kalksteinmehl 0-0,2 mm 20% limestone flour 0-0.2 mm
8% Quarzsand 0,1 -0,3 mm 8% quartz sand 0.1-0.3 mm
37 % Quarzsand 0,1 -1 ,5 mm 37% quartz sand 0.1 -1, 5 mm
5 % Leichtfüllstoff Perlite 0-2 5% light filler Perlite 0-2
1 % Dispersionspulver (Silan-modifiziertes Terpolymer, Vinnapas 8034 H) 1% dispersion powder (silane-modified terpolymer, Vinnapas 8034 H)
0,04 % Luftporenbildner auf Natriumlaurylsulfat 0.04% air entraining agent on sodium lauryl sulfate
0,2 % Natriumoleat 0.2% sodium oleate
0,2 % modifizierte Methylcellulose 0.2% modified methylcellulose
0,06 % 6 mm Glasfasern (STW) 0.06% 6 mm glass fibers (STW)
Anmachwassermenge: 420 g/kg Pulver Amount of mixing water: 420 g / kg powder
Prüfkörperherstellung für WTA-Salztest: Test specimen production for WTA salt test:
Bei der Herstellung bzw. Formgebung von Prüfkörpern ist das Schock-Verfahren nach DIN EN 1015-1 1 , Abschnitt 7.2.2, anzuwenden. When manufacturing or shaping test specimens, the shock method according to DIN EN 1015-1 1, section 7.2.2, shall be used.
Scheibenförmige Prüfkörper werden auf ebenem, nicht saugendem Untergrund ohne Trennmittel hergestellt. Disc-shaped specimens are produced on a flat, non-absorbent surface without release agent.
Die Prüfkörper werden zunächst in der Form 2 Tage lang in eine Feuchtkammer bei 95 ± 5 % relative Feuchtigkeit gegeben oder mit einem Plastikbeutel fest umschlossen. Sodann werden sie entschalt und 5 Tage lang auf einem Rost mit dreieckigen Stegen unter den gleichen Bedingungen gelagert. Anschließend erfolgt eine 21 -tägige Lagerung bei 65 ± 5 % relative Feuchtigkeit. Die Lagerungstemperatur beträgt 20 ± 2 °C.
Für jede Festmörtelprüfung werden 3 Prüfkörper mit einer Masseabweichung der einzelnen Prüfkörper von max. 10 Gew.-% benötigt. Zweckmäßigerweise werden mehrere Prüfkörper hergestellt und solche mit einer höheren Masseabweichung verworfen. Die Abmessungen der Prüfkörper betragen: The specimens are first placed in the mold for 2 days in a humidity chamber at 95 ± 5% relative humidity or tightly enclosed in a plastic bag. Then they are disassembled and stored for 5 days on a grid with triangular bars under the same conditions. This is followed by a 21-day storage at 65 ± 5% relative humidity. The storage temperature is 20 ± 2 ° C. For each solid mortar test, 3 test specimens with a mass deviation of the individual specimens of max. 10 wt .-% needed. Conveniently, several test specimens are produced and discarded with a higher mass deviation. The dimensions of the specimens are:
Scheiben, Durchmesser > 100 mm, Dicke 20 mm Discs, diameter> 100 mm, thickness 20 mm
WTA Salztest (6.3.10) nach WTA-Merkblatt 2-9-04/D: WTA salt test (6.3.10) according to WTA leaflet 2-9-04 / D:
Die Seitenflächen der Prüfkörper (siehe Prüfkörperherstellung für WTA-Salztest) werden wasserundurchlässig abgedichtet. Sie werden in eine definierte Salzlösung gelegt. Diese Salzlösung („WTA-Salzlösung") enthält die mehrfache Menge an Salzen, die in der Praxis als schadensrelevant gilt. Sie wird wie folgt hergestellt: Zu 1 Liter deionisiertem Wasser werden folgende Salzmengen zugegeben: The side surfaces of the specimens (see test specimen production for WTA salt test) are sealed watertight. They are placed in a defined saline solution. This salt solution ("WTA salt solution") contains the multiple amount of salts which in practice is considered to be harmful and is prepared as follows: The following quantities of salt are added to 1 liter of deionized water:
- 35 g NaCI - 35 g NaCl
- 5 g Na2S04 (wasserfrei) 5 g of Na 2 SO 4 (anhydrous)
- 15 g NaN03 - 15 g of NaN0 3
Die Prüfkörper werden zunächst 3 Tage lang im Trockenschrank bei 40 °C getrocknet. Anschließend werden sie mit der Schalungsseite nach unten auf drei übereinander liegende Filterplatten (Schleicher + Schüll, Best.-Nr. 2727) gelegt, die sich in einer flachen Schale mit nicht profiliertem Boden befinden. Danach wird vorsichtig am Rand der Schale WTA-Salzlösung eingefüllt, so dass die Scheibenunterseite benetzt wird. Die Schalen werden mit einer Platte abgedeckt, die Aussparungen in der Größe der Prüfscheiben besitzt. Die Lagerung erfolgt im Normklima (20 ± 1 °C und 65 % relative Feuchtigkeit). Während der Prüfdauer muss so viel Salzlösung nachgegeben werden, dass die Scheibenunterseite ständig benetzt wird. The specimens are first dried for 3 days in a drying oven at 40 ° C. They are then placed with the formwork side down on three superimposed filter plates (Schleicher + Schull, Order No. 2727), which are located in a shallow dish with non-profiled bottom. Afterwards, WTA salt solution is carefully poured in at the edge of the bowl so that the bottom of the pane is wetted. The trays are covered with a plate having recesses the size of the test discs. Storage is carried out under standard conditions (20 ± 1 ° C and 65% relative humidity). During the test period, so much salt solution must be added so that the underside of the disc is constantly wetted.
Nach 10 Tagen werden die Prüfkörper entnommen, mittig gebrochen und beurteilt, ob Salzlösung bis an die Oberfläche durchgedrungen ist. After 10 days, the specimens are removed, broken in the middle and judged whether saline solution has penetrated to the surface.
Prüfkörperherstellung für modifizierten Salztest: Test specimen preparation for modified salt test:
Bei der Herstellung bzw. Formgebung von Prüfkörpern ist das Schock-Verfahren nach DIN EN 1015-1 1 , Abschnitt 7.2.2, anzuwenden. When manufacturing or shaping test specimens, the shock method according to DIN EN 1015-1 1, section 7.2.2, shall be used.
Scheibenförmige Prüfkörper werden auf ebenem, nicht saugendem Untergrund ohne Trennmittel hergestellt.
Die Prüfkörper werden in der Form 2 Tage lang in eine Feuchtkammer bei 95 ± 5 % relative Feuchtigkeit gegeben oder mit einem Plastikbeutel fest umschlossen. Die Lagerungstemperatur beträgt 20 ± 2 °C. Für jede Festmörtelprüfung werden 3 Prüfkörper mit einer Masseabweichung der einzelnen Prüfkörper von max. 10 Gew.-% benötigt. Zweckmäßigerweise werden mehrere Prüfkörper hergestellt und solche mit einer höheren Masseabweichung verworfen. Die Abmessungen der Prüfkörper betragen: - Scheiben, Durchmesser > 100 mm, Dicke 20 mm Disc-shaped specimens are produced on a flat, non-absorbent surface without release agent. The specimens are placed in the mold for 2 days in a humidity chamber at 95 ± 5% relative humidity or tightly enclosed in a plastic bag. The storage temperature is 20 ± 2 ° C. For each solid mortar test, 3 test specimens with a mass deviation of the individual specimens of max. 10 wt .-% needed. Conveniently, several test specimens are produced and discarded with a higher mass deviation. The dimensions of the specimens are: - Discs, diameter> 100 mm, thickness 20 mm
Modifizierter Salztest: Modified salt test:
Die Seitenflächen der noch feuchten Prüfkörper (siehe Prüfkörperherstellung für modifizierten Salztest) werden wasserundurchlässig abgedichtet. Sie werden in eine defi- nierte Salzlösung gelegt. Diese Salzlösung („WTA-Salzlösung") enthält die mehrfache Menge an Salzen, die in der Praxis als schadensrelevant gilt. Sie wird wie folgt hergestellt: The side surfaces of the still moist test specimens (see test specimen production for modified salt test) are sealed watertight. They are placed in a defined salt solution. This saline solution ("WTA Saline Solution") contains the multiple amount of salts that is considered harmful in practice and is prepared as follows:
Zu 1 Liter deionisiertem Wasser werden folgende Salzmengen zugegeben: The following amounts of salt are added to 1 liter of deionized water:
- 35 g NaCI - 35 g NaCl
- 5 g Na2S04 (wasserfrei) 5 g of Na 2 SO 4 (anhydrous)
- 15 g NaN03 Die Prüfkörper werden mit der Schalungsseite nach unten auf drei übereinander liegende Filterplatten (Schleicher + Schüll, Best.-Nr. 2727) gelegt, die sich in einer flachen Schale mit nicht profiliertem Boden befinden. Danach wird vorsichtig am Rand der Schale WTA-Salzlösung eingefüllt, so dass die Scheibenunterseite benetzt wird. Die Schalen werden mit einer Platte abgedeckt, die Aussparungen in der Größe der Prüfscheiben besitzt. Die Lagerung erfolgt im Normklima (20 ± 1 °C und 65 % relative Feuchtigkeit). Während der Prüfdauer muss so viel Salzlösung nachgegeben werden, dass die Scheibenunterseite ständig benetzt wird. - 15 g NaN0 3 The test specimens are placed with the formwork side down on three filter plates (Schleicher + Schüll, Order No. 2727) one above the other, which are located in a shallow dish with non-profiled bottom. Afterwards, WTA salt solution is carefully poured in at the edge of the bowl so that the bottom of the pane is wetted. The trays are covered with a plate having recesses the size of the test discs. Storage is carried out under standard conditions (20 ± 1 ° C and 65% relative humidity). During the test period, so much salt solution must be added so that the underside of the disc is constantly wetted.
Nach definierten Zeiten werden die Prüfkörper entnommen, mittig gebrochen und beurteilt, ob Salzlösung bis an die Oberfläche durchgedrungen ist.
Ergebnisse: After defined times, the specimens are removed, broken in the middle and assessed whether saline solution has penetrated to the surface. Results:
WTA Salztest (6.3.10) nach WTA- Merkblatt 2-9-04/D WTA salt test (6.3.10) according to WTA leaflet 2-9-04 / D
Visueller Test zur Überprüfung der Hydrophobie: Visual test to check the hydrophobicity:
Ein nach WTA-Merkblatt (6.1 .3) hergestellter Prüfkörper wurde nach 24 Stunden Lagerung in zwei etwa gleich große Hälften gebrochen und ein Wassertropfen auf die Bruchstelle mittels einer Spritze mit Nadel (Kanülen-Innendurchmesser: 0,5 mm) aufgebracht. Es wurde das Saugverhaltens und der Randwinkel des Wassertropfens beobachtet. A test specimen prepared according to WTA leaflet (6.1 .3) was broken after 24 hours storage in two halves of approximately equal size and a drop of water was applied to the fracture site by means of a syringe with needle (cannula inside diameter: 0.5 mm). The suction behavior and the contact angle of the water droplet were observed.
Ergebnisse: Results:
Bei dem erfindungsgemäßen Putz kann im Unterschied zum Vergleich und auch zu handelsüblichen Sanierputz beobachtet werden, dass sich die Hydrophobie bereits nach kurzer Trocknungsphase des Probekörpers ausbildet und somit der Wassertropfen deutlich länger auf der Bruchstelle verbleibt. Dieses Verhalten wird bei Sanierputzen nach dem Stand der Technik nur beobachtet, wenn der Sanierputz bereits mindestens einmal komplett ausgetrocknet ist.
In the plaster according to the invention can be observed in contrast to the comparison and also to commercial Sanierputz that forms the hydrophobicity after a short drying phase of the specimen and thus the water drops remain much longer on the break point. This behavior is observed in Sanierputzen according to the prior art only when the restoration plaster is already completely dried at least once.
Claims
Patentansprüche claims
Trockenmörtel, geeignet zur Herstellung eines Putzes für eine Dry mortar, suitable for the production of a plaster for a
Gebäudeoberfläche, umfassend, Building surface, comprising,
0 bis 50 Gew.-% hydraulische Bindemittel, 0 to 50% by weight of hydraulic binders,
0 bis 35 Gew.-% Calciumhydroxid, 0 to 35% by weight of calcium hydroxide,
20 bis 86 Gew.-% Füllstoffe, From 20 to 86% by weight of fillers,
0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines 0.2 to 5 wt .-% of dispersion powder based on a
Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren und Ethylene vinyl laurate vinyl chloride terpolymers and
0 bis 40 Gew.-% weitere Komponenten, 0 to 40% by weight of further components,
wobei hydraulische Bindemittel und Calciumhydroxid gemeinsam being hydraulic binders and calcium hydroxide in common
mindestens 8 Gew.-% des Trockenmörtels ausmachen. make up at least 8% by weight of the dry mortar.
2. Trockenmörtel nach Anspruch 1 , dadurch gekennzeichnet, dass dieser 2. dry mortar according to claim 1, characterized in that this
12 bis 50 Gew.-% hydraulische Bindemittel, From 12 to 50% by weight of hydraulic binders,
1 bis 12 Gew.-% Calciumhydroxid, From 1 to 12% by weight of calcium hydroxide,
20 bis 86 Gew.-% Füllstoffe, From 20 to 86% by weight of fillers,
0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines 0.2 to 5 wt .-% of dispersion powder based on a
Ethylen-Vinyllaurat-Vinylchlorid-Terpolymeren Ethylene-vinyl laurate-vinyl chloride terpolymer
0 bis 40 Gew.-% weitere Komponenten 0 to 40 wt .-% further components
umfasst. includes.
Trockenmörtel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Dispersionspulver 0,1 bis 5 Gew.-%, bezogen auf das Dispersionspulver, Silane enthält. Dry mortar according to claim 1 or 2, characterized in that the dispersion powder contains 0.1 to 5 wt .-%, based on the dispersion powder, silanes.
Trockenmörtel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Dispersionspulver 0 bis 50 Gew.-%, insbesondere 0 bis 30 Gew.-%, mindestens eines weiteren Monomeren enthält. Dry mortar according to one of claims 1 to 3, characterized in that the dispersion powder contains 0 to 50 wt .-%, in particular 0 to 30 wt .-%, of at least one further monomer.
Trockenmörtel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass es sich bei dem hydraulischen Bindemittel um mindestens eines aus der Reihe Portlandzement, Tonerdeschmelzzement und Puzzolanzement handelt. Dry mortar according to one of claims 1 to 4, characterized in that it is the hydraulic binder is at least one of the series Portland cement, alumina cement and pozzolana cement.
Trockenmörtel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es sich bei den weiteren Komponenten um mindestens eine aus der Reihe Verdicker, Wasserretentionsmittel, Dispergiermittel, Rheologieverbesserer, Luftporenbildner, Verzögerer, Beschleuniger, Hydrophobierungsmittel, Zusatzstoffe, Pigmente, organische oder anorganische Fasern handelt. Dry mortar according to one of claims 1 to 5, characterized in that it is in the other components at least one of the series thickener, water retention agents, dispersants, Rheologieverbesserer, air entrainers, retarders, accelerators, water repellents, additives, pigments, organic or inorganic fibers ,
Trockenmörtel nach Anspruch 6, dadurch gekennzeichnet, dass als Luftporenbildner mindestens einer aus der Reihe Tall- und Balsamharze, Alkylsulfate
und/oder deren Salze, Ligninsulfonate, Gasbildner, Carboxylverbindungen und/oder deren Salze und Proteinsäuren eingesetzt wird. Dry mortar according to claim 6, characterized in that as air entraining agents at least one of the series tall and balsam resins, alkyl sulfates and / or salts thereof, lignosulfonates, gas formers, carboxyl compounds and / or their salts and protein acids is used.
8. Trockenmörtel nach Anspruch 6, dadurch gekennzeichnet, dass es sich bei den Fasern um mindestens eine aus der Reihe Cellulose-Fasern, Carbon-Fasern,Dry mortar according to claim 6, characterized in that the fibers are at least one of the series of cellulose fibers, carbon fibers,
Mineral-Fasern und Kunststoff-Fasern handelt. Mineral fibers and plastic fibers are traded.
9. Trockenmörtel nach Anspruch 6, dadurch gekennzeichnet, dass es sich bei dem Wasserretentionsmittel um Methylcellulose und/oder ein wasserlösliches oder wasserquellbares sulfogruppenhaltiges Copolymer handelt. 9. dry mortar according to claim 6, characterized in that it is the water retention agent is methyl cellulose and / or a water-soluble or water-swellable sulfo-containing copolymer.
10. Trockenmörtel nach Anspruch 6, dadurch gekennzeichnet, dass es sich bei dem Hydrophobierungsmittel um mindestens eines aus der Reihe Fettsäuren und/oder deren Salze und Silicone handelt. 10. Dry mortar according to claim 6, characterized in that it is at least one of the series of fatty acids and / or their salts and silicones in the hydrophobing agent.
1 1 . Trockenmörtel nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass es sich bei dem Füllstoff um mindestens einen aus der Reihe Kreide, Quarzsand, Quarzmehl, Calcit, Dolomit, Talkum, Kaolin, Glimmer, Schwerspat, Bimsmehl, Perlit, Mineralschaum, Schaumperlen, Bims, Blähglas, Hohlglasku- geln, Vermiculit und Calciumsilikat-Hydrat handelt. 1 1. Dry mortar according to one of Claims 1 to 10, characterized in that the filler is at least one of chalk, quartz sand, quartz powder, calcite, dolomite, talc, kaolin, mica, barite, pumice, perlite, mineral foam, foam beads, Pumice, expanded glass, hollow glass spheres, vermiculite and calcium silicate hydrate.
12. Verwendung von 0,2 bis 5 Gew.-% Dispersionspulver auf Basis eines Ethylen- Vinyllaurat-Vinylchlorid-Terpolymeren, bezogen auf den Trockenmörtel, in einem Sanierputz, zum beschleunigten Aufbau der hydrophoben Eigenschaften des Putzes nach Applikation. 12. Use of 0.2 to 5 wt .-% of dispersion powder based on an ethylene-vinyl laurate-vinyl chloride terpolymers, based on the dry mortar, in a Sanierputz, for accelerated construction of the hydrophobic properties of the plaster after application.
13. Verwendung nach Anspruch 12, dadurch gekennzeichnet, dass es sich um einen Sanierputz nach Definition des WTA Merkblatts 2-9-04 handelt. 14. Verwendung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass es sich um einen Putz auf Basis eines Trockenmörtel nach einem der Ansprüche 1 bis 1 1 handelt.
13. Use according to claim 12, characterized in that it is a restoration render as defined by WTA Leaflet 2-9-04. 14. Use according to claim 12 or 13, characterized in that it is a plaster based on a dry mortar according to one of claims 1 to 1 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11784629.5A EP2640676A1 (en) | 2010-11-15 | 2011-11-11 | Dry mortar and its use as render |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10191182 | 2010-11-15 | ||
PCT/EP2011/069900 WO2012065906A1 (en) | 2010-11-15 | 2011-11-11 | Dry mortar and its use as render |
EP11784629.5A EP2640676A1 (en) | 2010-11-15 | 2011-11-11 | Dry mortar and its use as render |
Publications (1)
Publication Number | Publication Date |
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EP2640676A1 true EP2640676A1 (en) | 2013-09-25 |
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ID=44993546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11784629.5A Withdrawn EP2640676A1 (en) | 2010-11-15 | 2011-11-11 | Dry mortar and its use as render |
Country Status (2)
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EP (1) | EP2640676A1 (en) |
WO (1) | WO2012065906A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150203404A1 (en) * | 2012-07-10 | 2015-07-23 | Akzo Nobel Chemicals International B.V. | Powder Mixture And Process To Make Dry Mortar |
DE102014101704A1 (en) * | 2013-12-20 | 2015-06-25 | Interbran Systems Ag | insulating plaster |
DE102014012190A1 (en) * | 2014-08-20 | 2016-02-25 | Saint-Gobain Weber Gmbh | Renovation of building facades infested with fungi and / or algae |
CN104230266A (en) * | 2014-09-05 | 2014-12-24 | 陈浩 | High-strength dry-mixed mortar stirring method |
EP3318538B1 (en) | 2016-11-02 | 2019-08-21 | STO SE & Co. KGaA | Plaster mass, heat insulation compound system and method for manufacturing same |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS215262B1 (en) | 1978-04-27 | 1982-08-27 | Jaroslav Lebeda | Special plaster mortar material |
DE3512322A1 (en) | 1985-04-02 | 1986-10-02 | Colfirmit Marthahütte GmbH Fabrik chem. Baustoffe, Mineralmühlen und Edelputzwerke, 8590 Marktredwitz | PLASTERING SYSTEM |
DD291074A5 (en) | 1989-12-21 | 1991-06-20 | Bauakademie Ddr | Sanierputzmörtel |
DE4030638A1 (en) * | 1990-09-27 | 1992-04-02 | Wacker Chemie Gmbh | DISPERSION POWDER COMPOSITION |
DE4402408A1 (en) | 1994-01-27 | 1995-08-03 | Wacker Chemie Gmbh | Redispersible, silicon-modified dispersion powder composition, process for its preparation and its use |
DE19506398A1 (en) * | 1995-02-23 | 1996-08-29 | Wacker Chemie Gmbh | Process for the hydrophobization of gypsum materials |
DE10037629A1 (en) | 2000-08-02 | 2002-02-14 | Skw Bauwerkstoffe Deutschland | Water-soluble or water-swellable sulfo-containing associative thickening copolymers, process for their preparation and their use |
HUP0303992A3 (en) * | 2001-04-09 | 2004-12-28 | James Hardie Int Finance Bv | Integral water resistant fibre-cement |
KR100499343B1 (en) * | 2002-11-27 | 2005-07-04 | 장산방수산업(주) | Waterproof admixture for concrete having a corrosion inhibition function |
DE102004013158A1 (en) | 2004-03-17 | 2005-10-06 | Construction Research & Technology Gmbh | Polymeric composition and its use as additives in aqueous building material systems and in water-based painting and coating systems |
DE102004032304A1 (en) * | 2004-07-03 | 2006-02-16 | Construction Research & Technology Gmbh | Water-soluble sulfo-containing copolymers, process for their preparation and their use |
ATE421490T1 (en) | 2006-07-24 | 2009-02-15 | Akzo Nobel Nv | USE OF POLYMER POWDER IN PAVING JOINTS MORTARS |
DE102007012786A1 (en) | 2007-03-16 | 2009-01-08 | Construction Research & Technology Gmbh | Preparation of sulfo-containing copolymers |
-
2011
- 2011-11-11 WO PCT/EP2011/069900 patent/WO2012065906A1/en active Application Filing
- 2011-11-11 EP EP11784629.5A patent/EP2640676A1/en not_active Withdrawn
Non-Patent Citations (1)
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See references of WO2012065906A1 * |
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WO2012065906A1 (en) | 2012-05-24 |
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