CS199429B1 - Cement mixture,especially for coatings having increased water-tightness - Google Patents
Cement mixture,especially for coatings having increased water-tightness Download PDFInfo
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- CS199429B1 CS199429B1 CS782400A CS240078A CS199429B1 CS 199429 B1 CS199429 B1 CS 199429B1 CS 782400 A CS782400 A CS 782400A CS 240078 A CS240078 A CS 240078A CS 199429 B1 CS199429 B1 CS 199429B1
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- 239000000203 mixture Substances 0.000 title claims description 29
- 238000000576 coating method Methods 0.000 title claims description 15
- 239000004568 cement Substances 0.000 title description 11
- 239000002245 particle Substances 0.000 claims description 17
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- 239000007859 condensation product Substances 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 239000005018 casein Substances 0.000 claims description 4
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 4
- 235000021240 caseins Nutrition 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 150000001491 aromatic compounds Chemical class 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims description 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000011398 Portland cement Substances 0.000 description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 5
- 235000013539 calcium stearate Nutrition 0.000 description 5
- 239000008116 calcium stearate Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 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
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229940071162 caseinate Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- PHHWLDOIMGFHOZ-UHFFFAOYSA-L disodium;dinaphthalen-1-ylmethanedisulfonate Chemical compound [Na+].[Na+].C1=CC=C2C(C(C=3C4=CC=CC=C4C=CC=3)(S(=O)(=O)[O-])S([O-])(=O)=O)=CC=CC2=C1 PHHWLDOIMGFHOZ-UHFFFAOYSA-L 0.000 description 1
- 239000004815 dispersion polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- -1 sulphate anions Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Zo stavebnej praxé sú známe nátěrové alebo náetrekové hmoty, v ktorých je ako spojívo portlandský cement, ktoré sa využívajú na povrchové Úpravy betonu a iných silikátových pódkladov stavebných diel. Samotná zmes komerčného portlandského cementu a vody sa pre tieto účely nehodí. Preto sa pridávajú ku komerčnému portlandskémú cementu přísady ako sú například hydrofobižačhé prostriedky napr. stearan vápenatý alebo hygroskopické soli na báze chloridu vápenatého alebo sodného. Tieto však nezabezpečujú vhodné reologické vlastnosti čerstvaj nátěrověj hmoty, umožňujúce 1’ahkd aplikáciu. Nezabezpečujú ani požadovaná vodotěsnost, pretože v ddeledku zmrašťovania cementu, nevyhovujúcemu pre tento účel použitia tvoří zatvrdnutá vrstva povrchovéj úpravy či nátěru jemné trhlinky, ktoré prepúšťajů tlaková vodu. Tento nedostatok neodstraňuje ani přídavek inertného plniva, ako jé například křemičitý pieeok a to i pri dodržiavaní známyéh zásad zloženie velkosti častíc plesku pre zabezpečenie jeho minimálnej medzerovitosti. Tým nevyhovuje pre použitie tam, kdesa vyžaduje tesniaci účinok voči tlakovéj vodě.It is known from the construction practice of paints or coatings in which Portland cement is used as a binder, which are used for surface treatment of concrete and other silicate substrates of building components. A mixture of commercial Portland cement and water alone is not suitable for this purpose. Therefore, additives such as hydrophobic agents, e.g. calcium stearate or hygroscopic salts based on calcium or sodium chloride. However, these do not provide suitable rheological properties of the fresh paint to allow application. They also do not provide the required watertightness, as in the case of cement shrinkage, which is unsuitable for this purpose, the hardened layer of coating or coating forms fine cracks which pass through the pressurized water. This drawback does not even eliminate the addition of an inert filler, such as silica pieeok, even in accordance with known principles of particle size composition of the ball to ensure its minimum voidiness. This makes it unsuitable for use where it requires a sealing effect against pressurized water.
Uvedené nedostatky odstraňuje cemeritová zmes, najmfi pre nátěry so zvýšenou vodoteanosťou, obsahujúca 100 dielov hmotnostných cementu, 3 až 50 dielov hmotnostných popolčeka, 0,2 až 2 dielov hmotnostných kondenzačného produktu formaldehydu a Sulfonovanéj aromatickéj a/alébo heterocyklickej zlúčeniny na199429The above drawbacks are overcome by a cemerite composition, in particular for paints with increased water resistance, comprising 100 parts by weight of cement, 3 to 50 parts by weight of ash, 0.2 to 2 parts by weight of the condensation product of formaldehyde and a sulfonated aromatic and / or heterocyclic compound.
- 2 příklad kondenzačného produktu tormaldehydu a naftaléneulfonovej kyseliny alebo jej aoli, a/alebo vodorozpuetnej melaminfarmaldehydověj živice a připadne dalžíeh modifikujúcich príead a/alebo plniva, pričom podTa vynélezu je měrný povrch zmesi cementu, popolčeká a kondenzačného produktu najmenej 4200 cmr/g, s výhodou 5700 cm^/g a zrnenie také, že obsahuje najmenej 85, a výhodou 90 % častíc menších ako 40 (U. m najmenej 70, a výhodou 80 % častíc menších ako 3Q ¢, m najmenej 55, e výhodou 65 % častíc menších ako 20 <y- m najmenej 20, s výhodou 55 % častíc menších ako 10 ^m.2 an example of a condensation product of tormaldehyde and naphthalene sulfonic acid or its salts, and / or a water-soluble melaminpharmaldehyde resin and optionally other modifying additives and / or fillers, wherein according to the invention the specific surface area of the cement mixture, ash and condensation product is at least 5700 cm @ 2 / g and a particle size of at least 85, and preferably 90% of particles smaller than 40 (U. m of at least 70, and preferably 80% of particles smaller than 30, m at least 55, preferably 65% of particles smaller than 20). γ-m of at least 20, preferably 55% of particles smaller than 10 µm.
Vlastnosti cementověj zmesi podTa vynálezu je možné ďalej modifikovat, například ak sa požadujú jej vodoodpudivé vlastnosti přidáním hydrofobizačnej príeady, například stearanu vápenatého. Vhodné množstvo je obvykle 0,5 až 2 diely stearanu vápenatého, počítané na 100 dielov hmotnostných cementu. Ak sa požaduje zvýšené adhézia zatvrdnutého nátěru či náetreku, je účelné přidat ako modifikujúcu přísadu k cementovej zmesi podTa vynálezu, vztiahnuté na 100 dielov hmotnostných cementu, 1 až 20 dielov hmotnostných disperzie polymeru, například vinýlacetátylánového, alebo etyrénakryiátového.The properties of the cementitious composition according to the invention can be further modified, for example, if its water-repellent properties are desired by adding a hydrophobising agent, for example calcium stearate. A suitable amount is usually 0.5 to 2 parts calcium stearate, based on 100 parts by weight of the cement. If increased adhesion of the hardened coating or coating is desired, it is expedient to add 1 to 20 parts by weight of a polymer dispersion, for example vinyl acetate or ethylene acrylate, as a modifying additive to the cementitious composition of the invention, based on 100 parts by weight of cement.
Polymóry, například vinylacetátetylénové, možno 8 výhodou použit vo formě redispergovateTnáho prášku*Polymers, such as vinyl acetate ethylene, may preferably be used in the form of a redispersible powder.
Cementová zmes podTa vynálezu mdže byt modifikovaná aj přidáním chloridu vápenatého, pričom jého vhodná dávka je 0,5 až 5 dielov hmotnostných, počítané na 100 dielov hmotnostných cementu.The cementitious composition of the invention may also be modified by the addition of calcium chloride, a suitable dose being 0.5 to 5 parts by weight, calculated per 100 parts by weight of cement.
Ak sa požadujú retenčné vlastnosti, je účelné modifikovat zloženie cementovej zmesi přidáním 0,2 až 3 dielov hmotnostných kazeinu, s výhodou kyslé ho a 0,5 až 5 dielov hmotnostných chloridu amonného, počítané na 100 dielov hmotnostných cementu. To přidaní zámeeovej vody do cementovej zmesi podTa vynálezu sa potom reakciou chloridu amónneho s hydrozydom vápenatým tvoří chlorid vápenatý a hydroxyd amónny, ktorý reaguje e kazelnom na rozpustný kazeinát amonný. Chlorid amónny je teda po přidaní vody zdrojom hydroxydu amónneho·If retention properties are desired, it is expedient to modify the composition of the cementitious composition by adding 0.2 to 3 parts by weight of casein, preferably acidic and 0.5 to 5 parts by weight of ammonium chloride, calculated per 100 parts by weight of cement. By adding the mixing water to the cementitious composition of the invention, calcium chloride and ammonium hydroxide are then formed by reaction of the ammonium chloride with the calcium hydrolase, which reacts in a cassette to the soluble ammonium caseinate. Thus, ammonium chloride is a source of ammonium hydroxide when water is added.
Zloženie cementovej zmeei ea mdže ďalej doplnit, ak sa vyžaduje nanášanie hrubších vretiev, přidáním potřebného množstva vhodného plniva.The composition of the cementitious mixture can be further supplemented if thicker coats are required by adding the necessary amount of suitable filler.
Cementová zmes podTa vynálezu ea vyrobí tak, že cement, popolček a konej enzačný produkt aldehydu a eulfonovanej aromatickej a/alebo heterocyklickej zlúčeniny ea spoločne melú, pokým ich zmee nedoeiahne měrný povrch 4200 cm /g e výhodou 5700 cm2/g. Spolu e touto zmeeou ea mdžu mliet ostatné zložky, ako je hydrofobizačná přísada, práškový redispergovateTný polymer, vo vodě rozpustný chlorid a kazeín, ak sa vyžaduje ich přítomnost, alebo ea pridajú až po skončení mletia, například vo formě vodného roztoku.The cementitious composition of the invention ea is prepared by grinding the cement, fly ash and aldehyde and eulfonated aromatic and / or heterocyclic compound ea together until the specific surface area is 4200 cm / g and preferably 5700 cm 2 / g. Together with this mixture e, other ingredients, such as a hydrophobizing additive, powdered redispersible polymer, water-soluble chloride and casein, if desired, may be milled or added after the grinding is completed, for example in the form of an aqueous solution.
Ak je potřebné pridanie plniva, pridéva sa až po skončení mletia·If filler addition is required, it is only added after grinding is finished ·
Cementová zmes podTa vynálezu ea 1’ahko aplikuje najmfi ako nátěr eo zvýšenou vodoteenoatou. Mdže sa však nanášať aj etriekanlm. Uvedené skutečnosti sú dokumentované v nasledujúcich príkladoch:The cementitious composition of the present invention is easy to apply, particularly as a coating to elevated water-green. However, etriekanlm may also be applied. This is documented in the following examples:
Příklad 1 Zmes 100 dielov hmotnostných portlandského cementu, 20 dielov hmotnostných hydraulicky aktívneho popolčeka a 0,6 dielu hmotnostného dinaftylmetándisulfonanu sodného sa mlela vo vibračnom mlýne. Měrný povrch zmesi podía Biaina bol 6500 cm /g. Analýzou velkosti častíc zmesi bolo stanovené, že obsahuje 94,8 % častíc do 40 m, 87,1 % častíc do 30 A m, 79,3 % častíc do 20 m a 55,3 % častíc do 10 (*-m.Example 1 A mixture of 100 parts by weight of Portland cement, 20 parts by weight of hydraulically active fly ash and 0.6 parts by weight of sodium dinaphthylmethane disulfonate was milled in a vibratory mill. The specific surface area of the Biain mixture was 6500 cm / g. The particle size analysis of the mixture determined that it contained 94.8% of the particles up to 40 m, 87.1% of the particles up to 30 µm, 79.3% of the particles up to 20 m, and 55.3% of the particles up to 10 µm.
Nátěr pozostávajúci zo 100 dielov hmotnostných takejto zmesi a 33 dielov hmotnostných vody, nanesený v celkovej hrúbke cca 0,8 mm na podkladový beton prspúšťajúci vodu už pri tlaku 0,1 MPa, vykázal po 7 dftoch tvrdnutia v uložení pri relatívnej vlhkosti vzduchu vyššej ako 90 % stupeň vodotěsnosti V 12 podl’a SSN 73 2025, teda nepretiekol ani pri tlaku 1,2 MPa pčsobiacom na nátěr.A coating consisting of 100 parts by weight of such a mixture and 33 parts by weight of water, applied in a total thickness of about 0.8 mm to a water-permeable sub-base concrete at a pressure of 0.1 MPa, after 7 days hardened in a bearing at relative air humidity of more than 90 % waterproofing V 12 according to SSN 73 2025, i.e. did not overflow even at a pressure of 1.2 MPa applied to the paint.
Rovnaký výaledok bol doaiahnutý ak bol nátěr pozostávajúci zo 100 dielov hmotnostných takejto zmesi, 66 dielov hmotnostných křemičitého piesku so zrněním do 0,4 mm a 36 dielov hmotnostných vody nanesený v hrúbke až 1,6 mm. Prídavok křemičitého pieeku teda nezvýšil vodotěsnost, ale umožnil dosiahnut vSčšiu hrůbku nátěru.The same result was achieved when a coating consisting of 100 parts by weight of such a mixture, 66 parts by weight of quartz sand with a grain size of up to 0.4 mm and 36 parts by weight of water was applied at a thickness of up to 1.6 mm. Thus, the addition of silica pie did not increase the watertightness, but made it possible to achieve a greater coating depth.
Skúškami bolo zistenó, že přidáním hydrofobizačných prostriédkov, ako je například stearan vápenatý, sa vodotesnosť nátěru nezměnila, avšak nátěr získal vodoodpudivé vlastnosti.Tests have shown that the addition of hydrophobic agents, such as calcium stearate, did not alter the waterproofness of the coating, but the coating had water-repellent properties.
Reologické vlastnosti zmesi pri' mechanickom nanášení striekaním, ako aj tvrdost a pevnost nanesenej vrstvy pri tvrdnutí v podmienkach nedostačujúceho ošetrovania vodou, sa zlepšujú přidáním disperzie. Je účelné přidávat také disperzie, ktoré eú vysoko odolné voči účinkom alkálií například styrénakrylátové alebo vinylacetátetylénové.The rheological properties of the mixture by mechanical spraying as well as the hardness and hardness of the deposited layer during hardening under conditions of insufficient water treatment are improved by the addition of a dispersion. It is expedient to add dispersions which are highly resistant to alkali, for example styrene acrylate or vinyl acetate ethylene.
Příklad 2Example 2
Zmes 100 dielov hmotnostných portlandského cementu, 20 dielov hmotnostných popolčeka, 0,6 dielu hmotnostného vodorozpustnej sulfonovanej melamínformaldehydověj živice, 1,2 dielu hmotnostného kazeínu, 1,2 dielu hmotnostného bezvodého chloridu vápenatého, 1,2 dielu hmotnostného chloridu amónneho, 0,10 dielu hmotnostného stearanu vápenatého bola zomletá vo vibračnom mlýne tak, aby mala měrný povrch podía Blaina 5400 cm /g a nasledujúce zrnenie:A mixture of 100 parts by weight of Portland cement, 20 parts by weight of fly ash, 0.6 parts by weight of water-soluble sulfonated melamine formaldehyde resin, 1.2 parts by weight of casein, 1.2 parts by weight of anhydrous calcium chloride, 1.2 parts by weight of ammonium chloride, 0.10 parts by weight The weight of calcium stearate was ground in a vibratory mill so that the specific surface area according to Blaina was 5400 cm / g and the following grain size:
92.9 % častíc do 40 juni, 81,3 % častíc do 30 ρ m, 65»7 % častíc do 20 <A®>92.9% particles up to 40 juni, 81.3% particles up to 30 ρ m, 65 »7% particles up to 20 <A®>
44.9 % častíc do 10 ,¼ m. Po skončeni mletia bola táto zmes zhomogsnizovaná s 80 dielmi hmotnostnými křemičitého piesku s najv&Čším zrnom 0,5 mm. Napokon bolo k predchádzajúcim zložkám přidaných 80 hmotnostných dielov vody.44.9% of particles up to 10 .mu.m. After grinding was completed, this mixture was homogenized with 80 parts by weight of silica sand with a maximum grain size of 0.5 mm. Finally, 80 parts by weight of water were added to the previous components.
Zmes bola nanesená nátěrom v celkovej hrúbke cca 1,5 mm na podkladový beton, ktorý pretiekol pri tlaku vody 0,1 MPa. Skúšóbné vzorky boli ošetřované do 24 hod,přikrytím mokrými handrami, a potom až do 28 dní bolí uložené na suchom vzduchu (20 °C, 50 až 70 % relativnéj vlhkosti). Nátěr vykázal stupeň vodotěsnosti V 12 podl’a ČSN 73 2025 pri pdsobení tlaku vody z o 'strany nátěru·The mixture was coated by a total thickness of approx. 1.5 mm onto the concrete undercoat, which flowed at a water pressure of 0.1 MPa. The test samples were treated for 24 hours, covered with wet rags, and then stored for up to 28 days in dry air (20 ° C, 50-70% relative humidity). The coating showed a degree of watertightness V 12 according to ČSN 73 2025 when the water pressure was applied from the side of the coating.
Pre príprávu cementověj zmesi podTa vynálezu je možnépoužiťajtroskoportlandské cementy. V případe pdsobehia νδά bbséhujúcich síranové aniony je účelné použiť síranovzdorný portlandský cement so zníženým obsahom C^A.For the preparation of the cementitious mixture according to the invention, it is possible to usetroscortortland cements. In the case of effluent sulphate anions, it is expedient to use sulphate-resistant Portland cement with a reduced C ^ A content.
Cementová zmes podTa vynálezu má všestranné použiti® všade tam, kde je potřebné zabezpečovať alebo dodatočne zaiatiť vodotěsnost silikátových hmdt, najmfi betonu, například vo vodohospodářských objektech, rdznych nádržiach a podobné. Ďalšie možnosti využitia eú, ak sa použije zmes cementu, popolčeka a kondenzačného produktu s měrným povrchem a zrněním podTa vynálezu, ako spojivo na výrobu betónov ao zlepšenými fyzikélno-mechanickými vlaatnosťami, například vodotesnosťou.The cementitious composition according to the invention has a versatile application wherever it is necessary to ensure or additionally initiate the watertightness of silicate mortars, especially concrete, for example in water management buildings, various tanks and the like. Other uses of the eu when using a mixture of cement, fly ash and condensation product with specific surface area and grain according to the invention, as a binder for the production of concrete and with improved physico-mechanical properties, such as water tightness.
Uvedené příklady žloženia, spdsobu výroby a použitia cementováj zmesi však slúžia len na ilustráciu a zdaleka nevyčerpávajú všetky možnosti využitia vynálezu.However, the examples of lining, method of manufacture and use of the cementitious compound are merely illustrative and are not exhaustive of the scope of the invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS782400A CS199429B1 (en) | 1978-04-13 | 1978-04-13 | Cement mixture,especially for coatings having increased water-tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS782400A CS199429B1 (en) | 1978-04-13 | 1978-04-13 | Cement mixture,especially for coatings having increased water-tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS199429B1 true CS199429B1 (en) | 1980-07-31 |
Family
ID=5361038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS782400A CS199429B1 (en) | 1978-04-13 | 1978-04-13 | Cement mixture,especially for coatings having increased water-tightness |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS199429B1 (en) |
-
1978
- 1978-04-13 CS CS782400A patent/CS199429B1/en unknown
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