CS195608B1 - Mixture for protecting fresh concrete method - Google Patents
Mixture for protecting fresh concrete method Download PDFInfo
- Publication number
- CS195608B1 CS195608B1 CS195078A CS195078A CS195608B1 CS 195608 B1 CS195608 B1 CS 195608B1 CS 195078 A CS195078 A CS 195078A CS 195078 A CS195078 A CS 195078A CS 195608 B1 CS195608 B1 CS 195608B1
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- CS
- Czechoslovakia
- Prior art keywords
- weight
- vinyl chloride
- mixture
- vinyl acetate
- fresh concrete
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 17
- 229920001577 copolymer Polymers 0.000 claims description 9
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 6
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 claims description 4
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000001023 inorganic pigment Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000000485 pigmenting effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001007 puffing effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Predmetom vynálezu je ochranný systém na báze makro.molekulových látok a organických rozpúšfadrel, ktorý sa nanáša na povrch čerstvej cementobetónovej vrstvy za úcelom jej tepelnej ochrany před slnečným žiarenim a stratou hydratačnej vody odpařováním. Ochranná vrstva /nátěr/ po nanesení na čerstvý beton a po vyschnutí brání úniku hydratačnej vody a v případe,' že je pigmentovaná, čiastočne i voči slnečnému žiareniu.SUMMARY OF THE INVENTION The present invention relates to a protective system based on macromolecular substances and organic solvents, which is applied to the surface of a fresh cement-concrete layer to provide thermal protection against sunlight and loss of hydration water by evaporation. The protective layer (coating), when applied to fresh concrete and after drying, prevents the escape of hydration water and, if it is pigmented, partly also to sunlight.
Po vyschnutí, t. j. maximálně cca 2 hodiny po nanesení, chrání povrch cementobetónovej vrstvy i proti dažďovej vodě,After drying, t. j. maximum 2 hours after application, protects the surface of the cement-concrete layer against rain water,
V minulosti sa nevyrábali betonové plochy, resp. čestné prvky priemyslóvým sposobom v takom velkom počte a v tak velkých rozmeroch, a preto bola dostatočná ochrana rohožami, mokrými plachtami a podobné.In the past, concrete surfaces, respectively. honorary elements in an industrial manner in such a large number and in such large dimensions, and therefore there was sufficient protection by mats, wet sheets and the like.
V súčasnosti sa situácia rieŠi překrýváním čerstvého betónu látkami, ktoré po zaschnutí sice čiastočne zabraňujú úniku-hydratačnej vody z čerstvého betónu, ale majú nedostatky v tom, že dlho zásychajú a po zaschnutí je ich přilnavost k povrchu betónu tak velká, že sa bez čiastočného poškodenia povrchu nedajú z něho odstránit. Pre efektívnu aplikáciu týchto látok sa tedy v cestnom stavíteIstve vyžadujú niektoré Specifické vlastnosti, najmá:At present, the situation is solved by overlapping fresh concrete with substances which, once dried, partially prevent the leakage-hydration water from fresh concrete, but have the drawbacks of long puffing and their adhesion to the concrete surface so high that without partial damage surface cannot be removed from it. Thus, for the effective application of these substances, certain specific properties are required in road construction, in particular:
1, Ochranná zmes nesmie prenikat dó čerstvej cementobetónovej zmesi a ani ju chemicky atakovat.1, The protective mixture must not penetrate into the fresh cement-concrete mixture or chemically attack it.
2, Ochranná zmes musí byt pigmentovatelná organickými, alebo anorganickými pigmentami alebo plnivami.2. The protective composition must be pigmentable with organic or inorganic pigments or fillers.
3, řarotesnost po vysušení má byt v rozsahu 30 až 80 Z, podlá ČSN 73 6180.3, the heat resistance after drying should be in the range of 30 to 80 Z, according to ČSN 73 6180.
$$
4* Ochranná vrstva sa má po 28 dňoch, t. j, pri ukončení svojej funkcie samovolné’ rozpadnút, alebo dat jednoduchým spósobom odstránit.4 * The protective layer is to be applied after 28 days, t. j, disintegrate spontaneously, or delete data in a simple way.
Účelné zoskupenie všetkých. týchto’požadovaných vlastností sa však dotéraz nepodařilo dosiahnut u žiadanej hmoty alebo zmesi umělých hmót, a to ani pri použití róznych modifikácií. Tak napr. zmesi připravené na báze polyvínylacetátu majú nízku odolnost voči vodě a sú málo\odolné voči nízkým teplotám. Zmesi připravené na báze kaucukov, resp, chlórkaučukov sa z povrchu obtažne odstraňují, pričom sa cémentobetónový povrch čiastočne porušuje. Uvedené nedostatky sú odstraněné ochranou čerstvého betónu podlá vynálezu.A purposeful grouping of all. however, these desired properties have not yet been achieved with the desired mass or mixture of plastics, even when using various modifications. So eg. the polyvinyl acetate-based compositions have low water resistance and low temperature resistance. Compositions prepared on the basis of rubber or chlorinated rubber are difficult to remove from the surface, with the cement-concrete surface partially breaking. These drawbacks are overcome by the protection of fresh concrete according to the invention.
Zmes pre ochranu povrchu Čerstvého betonu pri čestných stavbách, podlá tohoto vynálezu pozostáva z roztoku kopolyméru vinylchlorid - vinylacetát obsahujúceho 58 až 65 Z hmot., s výhodou 60 až 63 Z hmot., vinylchloridu, připadne modifikovaného suspenzným kopolymérom vinylchlorid - vinylacetát s obsahom 10 až 20 Z hmot., s výhodou 1 2 až 16 Z hmot., vinylacetátu, v množstve zodpovedajúcom poměru 1 : 0,05 až 1, počítané na kopolymér s obsahom 58 až 65 Z hmot. vinylchloridu, pričom uvedené kopolyméry sú zriedené organickým rozpúštadlom na konzistenciu zodpovedajúcu výtokovému času 12 až 15 s, meranú Fordovým pohárikom o priemere 4 mm pri 20 °C.The surface protection composition for fresh concrete in honest constructions according to the invention consists of a solution of vinyl chloride-vinyl acetate copolymer containing 58 to 65% by weight, preferably 60 to 63% by weight, of vinyl chloride, optionally modified with a vinyl chloride-vinyl acetate suspension copolymer of 10 to 20% by weight, preferably 1 to 16% by weight, of vinyl acetate, in an amount corresponding to a ratio of 1: 0.05 to 1, calculated on a copolymer containing 58 to 65% by weight of vinyl acetate; vinyl chloride, said copolymers being diluted with an organic solvent to a consistency corresponding to an outlet time of 12 to 15 s, measured with a Ford cup having a diameter of 4 mm at 20 ° C.
Zvýšenie tepelno-izolačných vlastností sa dosiahne pigmentáciou světlými anorganickými pigmentami alebo ich zmesami ako napr. kysličník titaničitý, jemne mletý vápenec alebo dolomit, kaolín, mletý azbest a pod. v množstve 3 až 8 Z hmotnostných. Takéto vrstvy je možné s výhodou použiť pri ochraně čerstvého betonu pri výstavbě betonových čestných krytov.The increase in heat-insulating properties is achieved by pigmenting with light inorganic pigments or mixtures thereof such as e.g. titanium dioxide, finely ground limestone or dolomite, kaolin, ground asbestos and the like. in an amount of 3 to 8% by weight. Such layers can be advantageously used in the protection of fresh concrete in the construction of concrete honor covers.
Příklad 1Example 1
Kopolymér vinylchlorid - vinylacetát s obsahom vinylchloridu 61 Z hmotnostných rozpuštěný v etylacetáte sa riedi zmesou xylénu a acetonu na konžistenciu meranú Fordovým pohárikom pri 20 °C /0 4 mm/ 12 až 15 s. K tomuto roztoku kopolymerů sa přidá rovnaké hmotnostně množstvo roztoku kopolyméru vinylchlorid - vinylacetát s obsahom vínylacetátu 14 Z hmotnostných, upraveného taktiež na konžistenciu 12 až. 15 s, meranú Fordovým pohárikom. Do zmesi ša nakoniec přidá práškový kysličník titaničitý a uhličitan vápenatý v pomere 1:1 a v množstve 5 Z hmotnostných počítané na celkovú zmes.Vinyl chloride-vinyl acetate copolymer containing vinyl chloride 61 Dissolved in ethyl acetate by weight is diluted with a mixture of xylene and acetone to a consistency measured by a Ford cup at 20 ° C / 0 mm / 12-15 sec. To this copolymer solution is added an equal weight amount of a vinyl chloride-vinyl acetate copolymer solution containing 14% by weight of vinyl acetate, also adjusted to a consistency of 12 to 12. 15 s, measured by Ford's cup. Finally, titanium dioxide powder and calcium carbonate are added to the mixture in a ratio of 1: 1 and in an amount of 5% by weight, calculated on the total mixture.
Paropriepustnosť vrstvy podía ČSN 73 6180 0,095 g/cra . Příprava riedidla: xylén a aceton sa zmiešaju v pomere 7:3.Vapor permeability of the layer according to ČSN 73 6180 0.095 g / cra. Preparation of diluent: xylene and acetone are mixed in a 7: 3 ratio.
acetát o obsahu 63 Z hmotnostných vinylchloridu rozpuštěný v butylacetáte sa upraví přidáním acetonu na konzís t.eneiu /meranú Fordovým pohárikom 0 4 mm pri 20 °C/ 12 až 13 s, přidá sa rovnaké hmotnostně množstvo kopolyméru vinylchlorid - vinylacetát s obsahom vínylacetátu 18 Z hmotnostných, rozpuštěného v acetone na konžistenciu /Ford 0 4 mm pri 20 °C/ 12 až 13 s a zhomogenizuje sa. Nakoniec sa přidá 6 % hmotnostných jemne mletého vápenca a zmes j.e po homogenizácii vhodná na nanášanie striekaním. Paropriepustnosť podlá ČSN 73 6180 0,08 g/cm^. Příklad 3Acetate containing 63% by weight of vinyl chloride dissolved in butyl acetate is treated by adding acetone to a consistency measured by a Ford cup of 4 mm at 20 ° C for 12-13 seconds, adding the same amount of vinyl chloride-vinyl acetate containing vinyl acetate 18% by weight. % by weight dissolved in acetone for consistency / Ford 0 4 mm at 20 ° C / 12-13 is homogenized. Finally, 6% by weight of finely ground limestone is added and the mixture is suitable for spraying after homogenization. Vapor permeability according to ČSN 73 6180 0.08 g / cm cm. Example 3
Suspenzný kopolymér vinylchlorid - vinylacetát s obsahom vínylacetátu 12 Z hmotnostných sa upraví přidáním zmesí aceton : benzén na konžistenciu 12 až 13 s /meraná Fordovým pohárikom 0 4 mm pri 20 °C/. Nakohiec sa přidá k zmesi práškový kysličník titaničitý v množstve 3 Z hmotnostných. Paropriepustnosť podlá ČSN 73 6180 0,085 g/cm^,The vinyl chloride-vinyl acetate suspension copolymer containing vinyl acetate 12 was adjusted by weight by adding acetone: benzene mixtures to a consistency of 12-13 s (measured with a Ford cup 0 mm at 20 ° C). Finally, titanium dioxide powder was added to the mixture in an amount of 3% by weight. Vapor permeability according to ČSN 73 6180 0,085 g / cm ^,
Příklad 2Example 2
Roztokový kopolymér vinylchlorid - vinyl-Vinyl chloride-vinyl- solution copolymer
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS195078A CS195608B1 (en) | 1978-03-28 | 1978-03-28 | Mixture for protecting fresh concrete method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS195078A CS195608B1 (en) | 1978-03-28 | 1978-03-28 | Mixture for protecting fresh concrete method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS195608B1 true CS195608B1 (en) | 1980-02-29 |
Family
ID=5355169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS195078A CS195608B1 (en) | 1978-03-28 | 1978-03-28 | Mixture for protecting fresh concrete method |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS195608B1 (en) |
-
1978
- 1978-03-28 CS CS195078A patent/CS195608B1/en unknown
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