CS204397B1 - Cement mixture with increased water-tightness - Google Patents
Cement mixture with increased water-tightness Download PDFInfo
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- CS204397B1 CS204397B1 CS791478A CS791478A CS204397B1 CS 204397 B1 CS204397 B1 CS 204397B1 CS 791478 A CS791478 A CS 791478A CS 791478 A CS791478 A CS 791478A CS 204397 B1 CS204397 B1 CS 204397B1
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- 239000000203 mixture Substances 0.000 title claims description 40
- 239000004568 cement Substances 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 5
- 239000011398 Portland cement Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007859 condensation product Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000001491 aromatic compounds Chemical class 0.000 claims description 3
- 229940044172 calcium formate Drugs 0.000 claims description 3
- 239000004281 calcium formate Substances 0.000 claims description 3
- 235000019255 calcium formate Nutrition 0.000 claims description 3
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- -1 fatty acid salt Chemical class 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 claims description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- FOGYNLXERPKEGN-UHFFFAOYSA-N 3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfopropyl)phenoxy]propane-1-sulfonic acid Chemical compound COC1=CC=CC(CC(CS(O)(=O)=O)OC=2C(=CC(CCCS(O)(=O)=O)=CC=2)OC)=C1O FOGYNLXERPKEGN-UHFFFAOYSA-N 0.000 claims description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 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 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims description 2
- 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 claims 2
- 239000002956 ash Substances 0.000 claims 2
- 239000011734 sodium Substances 0.000 claims 2
- 229910052708 sodium Inorganic materials 0.000 claims 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- 235000021355 Stearic acid Nutrition 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- RJDYJRBZJQZUJL-UHFFFAOYSA-L [Na+].C(S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+] Chemical compound [Na+].C(S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+] RJDYJRBZJQZUJL-UHFFFAOYSA-L 0.000 claims 1
- 239000000654 additive Substances 0.000 claims 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims 1
- 159000000007 calcium salts Chemical class 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000003446 ligand Substances 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims 1
- LSXCQABJRABQHO-UHFFFAOYSA-N prop-2-enoic acid;styrene Chemical compound OC(=O)C=C.OC(=O)C=C.C=CC1=CC=CC=C1 LSXCQABJRABQHO-UHFFFAOYSA-N 0.000 claims 1
- 238000005067 remediation Methods 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 239000008117 stearic acid Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000004381 surface treatment Methods 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 235000007237 Aegopodium podagraria Nutrition 0.000 description 2
- 244000045410 Aegopodium podagraria Species 0.000 description 2
- 235000014429 Angelica sylvestris Nutrition 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- 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
- ZMESHQOXZMOOQQ-UHFFFAOYSA-N 1-(naphthalen-1-ylmethyl)naphthalene Chemical compound C1=CC=C2C(CC=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 ZMESHQOXZMOOQQ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 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
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 229940041616 menthol Drugs 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920002545 silicone oil Polymers 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Vynález sa týká cementovej zmesi so zvýšenou vodotesnosťou.The invention relates to a cementitious composition with increased water tightness.
Běžné nátěrové hmoty, ktoré obsahujú ako spojivo běžný portlandský cement neupravený dodatečným mletím a připadne dispergátor a hydrofobizačný prostriedok, nevykazujú po zatvrdnutí odolnost voči priesaku tlakovej vody. Ani zmesi cementu, puzolánu, dispegátora a připadne i piesku bez dodatečné j úpravy mletím nemajú požadované vodotesniace účinky a to ani vtedy, ak sa k nim přidá hydrofobizačný prostriedok, například stearen vápenatý.Conventional coatings which contain conventional Portland cement untreated as a binder and optionally dispersing and a hydrophobizing agent do not exhibit pressure water leakage resistance after curing. Even mixtures of cement, pozzolan, dispersant and possibly sand without additional grinding do not have the desired waterproofing effect, even if a hydrophobising agent such as calcium stearene is added thereto.
Uvedené nedostatky rieši cementová zmes so zvýšenou vodotesnosťou podlá vynálezu. Jej podstatou je, že pozostáva, vztiahnuté na 100 dielov hmotnostných cementu, z 1 až 25 dielov hmotnostných puzolánu s obsahom častíc menších ako 10 μτη najmenej 60 %, ako je křemičitý úlet, ktorý vzniká pri výrobě kremíka a/alebo ferrosilícia, alebo mletý popolček, 0,05 až 2 diely hmotnostně dispergátora, s výhodou soli kyseliny lingnosulfonovej alebo kondenzačného produktu sulfonovanej aromatickej alebo heterocyklickej zlúčeniny s formaldehydom.These drawbacks are solved by a cementitious composition with increased water-tightness according to the invention. It is based on 100 parts by weight of cement, consisting of 1 to 25 parts by weight of pozzolan, with a particle content of less than 10 μτη of at least 60%, such as silica fume produced in the production of silicon and / or ferrosilicon, or ground ash 0.05 to 2 parts by weight of a dispersant, preferably a salt of lingnosulfonic acid or a condensation product of a sulfonated aromatic or heterocyclic compound with formaldehyde.
Zloženie cementovej zmesi podlá vynálezu je vhodné doplnit přidáním 0,1 až 5 dielov rozpustné j soli kyseliny mravčej a/alebo solné j vztiahnuté na 100 dielov hmotnostných ce204397 mentu. Ako kondenzačný produkt formaldehydu so sulfonovanou aromatickou zlúčeninou je možné použiť sol kyseliny dinaftylmetandisulfonovej, ako kondenzačný produkt formaldehydu so sulfonovanou heterocyklickou zlúčeninou je možné použiť sulfonovanú melamínformaldehydovú živicu. Zloženie cementovej zmesi móže byť doplněné, ak sa vyžaduje hydrofóbny povrch nanesenej a zatvrdnuté j cementovej zmesi, přidáním 0,5 až 6 dielov hmotnostných hydrofobizačného prostriedku, vztiahnuté na 100 dielov hmotnostných cementu. Ako hydrofobizačný prostriedok je účelné použiť sol mastnej kyseliny, ako je napr. stearan vápený, alebo zinočnatý.The composition of the cementitious composition of the invention may be suitably supplemented by the addition of 0.1 to 5 parts of soluble formic acid salt and / or hydrochloric acid, based on 100 parts by weight of Ce2 O4397 menthol. As the condensation product of formaldehyde with a sulfonated aromatic compound, a salt of dinaphthylmethane disulfonic acid may be used, and as the condensation product of a formaldehyde with a sulfonated heterocyclic compound, a sulfonated melamine-formaldehyde resin may be used. The composition of the cementitious composition may be supplemented if a hydrophobic surface of the applied and hardened cementitious composition is required, by adding 0.5-6 parts by weight of the hydrophobizing agent, based on 100 parts by weight of the cement. As a hydrophobizing agent, it is expedient to use a fatty acid salt such as e.g. calcium or zinc stearate.
Ďalšie zlepšenie vlastností sa dosiahne, ak cementová zmes má zvýšený měrný povrch na 5000 om2/g, s výhodou 6000 cm2/g.A further improvement of the properties is achieved if the cementitious compound has an increased specific surface area of 5000 µm 2 / g, preferably 6000 cm 2 / g.
K cementovej zmesi je účelné, ak sa požaduje zvýšená přilnavost k podkladu, přidávat disperzie polymérov so zvýšenou odolnosťou voči alkáliám, ako sú například disperzie akrylátové, vinylacetátetylénové a styrénakrylátové, s výhodou styren — 2 — etylhexylakrylát-akrylový, připadne vo formě redispergovatelného prášku, alebo s přísadou odpeňovača například na báze emulzií silikonových olejov. Vhodné množstvo disperzie je 1 až 15 dielov hmotnostných, vztiahnuté na 100 dielov hmotnostných cementu.It is expedient to add to the cementitious mixture, if an increased adhesion to the substrate is desired, dispersions of polymers with increased resistance to alkali, such as dispersions of acrylate, vinyl acetate ethylene and styrene acrylate, preferably styrene-2-ethylhexyl acrylate acrylic, optionally in the form of redispersible powder or with the addition of a defoamer, for example based on silicone oil emulsions. A suitable amount of dispersion is 1 to 15 parts by weight based on 100 parts by weight of cement.
Zloženie cementovej zmesi móže byť doplněné, vztiahnuté na 100 hmotnostných dielov cementu, až 400 dielmi plniva, s výhodou křemičitého piesku alebo drvy z uhličitanového kameniva, najma ak sa požaduje nanášanie hrubších vrstiev, alebo zrnitá štruktúra naneseného povrchu.The composition of the cementitious composition may be supplemented, based on 100 parts by weight of cement, with up to 400 parts of filler, preferably silica sand or carbonate aggregate crumbs, especially if thicker layers are required, or the granular texture of the deposited surface.
Zmes podlá vynálezu sa móže 1’ahko nanášať natiéraním na vlhký beton, ale móže sa nanášať mechanicky striekaním. Po zatvrdnutí má nanesená vrstva velmi dobrú odolnosť voči pósobeniu tlakovej vody. Ak sa cementová zmes podl’a vynálezu vyrobí so síranovzdorného cementu s nízkým obsahom C3A, má zároveň zvýšenú odolnosť voči pósobeniu síranových agresívnych vod.The composition according to the invention can be easily applied by spreading on wet concrete, but can be applied mechanically by spraying. After hardening, the applied layer has a very good resistance to pressure water. If the cementitious composition of the present invention is manufactured from a low C3A sulphate resistant cement, it also has increased resistance to the action of sulphate aggressive waters.
Příklad 1Example 1
Na 1000 g bieleho portlandského cementu bolo přidané:For 1000 g of white Portland cement:
g bieleho křemičitého úletu vznikajúceho pri výrobě kremíka g dinafitylmetándisulfonanu sodného 15 g pentaerytritolu 15 g stearenu vápenatého 25 g chloridu vápenatého.g of white silica fume resulting from the production of silicon g g of sodium dinaphthylmethane disulfonate 15 g of pentaerythritol 15 g of calcium stearene 25 g of calcium chloride.
Po přidaní 380 ml vody vznikla hmota, ktorá po dvojnásobnom· nátere v celkovej hrúbke 1 mm na vlhký betonový podklad a po 7 dňoch tvrdnutia pri 20 °C a pri relatívnej vlhkosti vzduchu vyššej ako 90 % neprepustila tlak vody 1 MPa z pozitívnej strany.The addition of 380 ml of water gave a mass which, after double coating at a total thickness of 1 mm on a wet concrete substrate and after 7 days of curing at 20 ° C and a relative air humidity of more than 90%, did not release water pressure of 1 MPa from the positive side.
Příklad 2Example 2
Na 1000 g síranovzdomého cementu podlá ČSN 72 2125 bolo přidané:Per 1000 g sulphate-free cement according to ČSN 72 2125 was added:
g křemičitého úletu .g of silica drift.
g sulfitových výpalkov (v podstatě práškový produkt na báze vápenatej soli kyseliny lignosulfonovej) g pentaerytritolu g stearanu vápenatéhog sulphite stillage (essentially a powdered product based on lignosulfonic acid calcium) g pentaerythritol g calcium stearate
Zmiešaním horeuvedených zložiek vznikla suchá prášková zmes, ktorá po přidaní zámesovej vody aplikovaná vo formě nátěru nepretiekla ani pri tlaku vody 1 MPa z pozitívnej strany pri rovnakých podmienkach skúšania ako v příklade 1.Mixing of the above components resulted in a dry powder mixture which, after addition of the mixed water applied as a coating, did not overflow even at a positive water pressure of 1 MPa under the same test conditions as in Example 1.
Příklad 3Example 3
Z 5 dielov hmotnostných normového piesku na výrobu malty podl’a ČSN 72 2117, 1 dielu troskoportlandského cementu triedy SPC 325 a 0,81 dielu vody bóli vyrobené trámčeky o rozmeroch 4X4X16 fm. Po 3 df^och tvrdnutia vo vlhkom vzduchu bolí uložené na 25 dní do vody.Of the 5 parts by weight standard sand for the production of mortar according to ČSN 72 2117, 1 part of troscortland cement class SPC 325 and 0.81 part of water were made beams with dimensions 4X4X16 fm. After curing for 3 days in humid air, it was stored in water for 25 days.
Časť trámčekov bola opatřená dvojnásobným náterom hmoty podfa příkladu č. 1 v celkovej hrúbke cca 1,2 mm.A portion of the beams was provided with a double coating of the composition according to Example no. 1 in a total thickness of approx. 1.2 mm.
Po dalších 28 dňoch tvrdnutia vo vodě bolí uložené natreté i nenatreté trámčeky do 10 % roztoku síranu sodného. Nenatreté trámčeky sa rozpadli už po 125 dňoch, zatial’ čo trámčeky s náterom zostali neporušené aj po 1 roku pósobenia 10 % roztoku síranu sodného. Příklad 4After an additional 28 days of curing in water, the coated and untreated bars were stored in a 10% sodium sulfate solution. Uncoated beams have been broken after 125 days, while the coated beams remain intact even after 1 year of exposure to a 10% sodium sulfate solution. Example 4
Zmes označená A pozostávajúca z 1000 g portlandského cementu značky PC 400, 20 g lignosulfonanu vápenatého, 200 g mletého popolčeka, 10 g pentaerytritolu a 10 g mravenčenu vápenatého bola zomletá na vibračnom mlýne na jemnosť 6000 cm1 2/g podfa Blaina.The mixture labeled A consisting of 1000 g of Portland PC 400 cement, 20 g of calcium lignosulfonate, 200 g of ground ash, 10 g of pentaerythritol and 10 g of calcium formate was ground in a vibratory mill to a fineness of 6000 cm @ 2 / g according to Blain.
Ďalej bola připravená zmes označená B tak, že k 1000 g portlandského cementu značky PC 400 bolo přidané 200 g popolčeka, 20 g lignosulfonanu vápenatého; 10 g pentaeritritolu a 10 g mravenčanu vápenatého, pričom popolček bol upravený mletím s uvedenými přísadami tak, že obsahoval 61 % častíc menších ako 10 /tm.Next, a mixture designated B was prepared by adding 200 g of fly ash, 20 g of calcium lignosulfonate to 1000 g of Portland 400 Portland cement; 10 g of pentaeritritol and 10 g of calcium formate, the fly ash having been treated by grinding with the said ingredients to contain 61% of particles smaller than 10 µm.
Zmes A a zmes B po přidaní 360 dielov vody holi dobré rozotieratefné na beton a vykázali po zatvrdnutí nátěru odolnosť voči priesaku vody z negatívnej strany.Mixture A and mixture B, after adding 360 parts of water, were well spreadable on concrete and showed a water leak resistance from the negative side after hardening of the paint.
Příklad 5Example 5
K 1105 g zmesi podfa příkladu č. 2 bolo přidané 600 g jemného křemičitého piesku, 100 ml nízko viskóznej styrénetylakrylátakrylovej disperzie s prídavkom 5 ml silikonového odpeňovacieho prostriedku a 220 ml vody. Uvedená hmota sa móže nanášať striekaním, pričom dobré zatvrdne i na suchom vzduchu (cca 20 °C, 50 až 70 % relatívnej vlhkosti) takže má dobrú vodotěsnost i bez ošetrovania počas tvrdnutia.To 1105 g of the mixture according to example no. 2, 600 g of fine quartz sand, 100 ml of low viscous styrene-ethyl acrylate acrylic dispersion were added with the addition of 5 ml of silicone antifoam and 220 ml of water. Said composition can be applied by spraying, while good curing even in dry air (about 20 ° C, 50 to 70% relative humidity) so that it has good water-tightness even without curing during curing.
Cementová zmes podfa vynálezu sa móže použiť na vodotěsné nátěry betonových konštrukcií, pričom móže mať okrem šedej aj bielu alebo inú vhodnú dekoratívnu farbu podfa přidaného pigmentu. Ďalej sa móže použiť na ochranu betonu voči síranovým agresívnym vodám a na ďalšie využitie v stavebníctve, najma tam, kde je potřebná dostatečná úprava alebo sanácia povrchu betonu.The cementitious composition according to the invention can be used for waterproof coatings of concrete structures, and can have, in addition to gray, a white or other suitable decorative color according to the added pigment. Furthermore, it can be used to protect concrete against sulphate aggressive waters and for further use in the construction industry, especially where sufficient treatment or repair of the concrete surface is required.
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS791478A CS204397B1 (en) | 1978-12-01 | 1978-12-01 | Cement mixture with increased water-tightness |
| CS516587A CS270805B3 (en) | 1978-12-01 | 1987-07-08 | Cement mixture with increased watertightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS791478A CS204397B1 (en) | 1978-12-01 | 1978-12-01 | Cement mixture with increased water-tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS204397B1 true CS204397B1 (en) | 1981-04-30 |
Family
ID=5429083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS791478A CS204397B1 (en) | 1978-12-01 | 1978-12-01 | Cement mixture with increased water-tightness |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS204397B1 (en) |
-
1978
- 1978-12-01 CS CS791478A patent/CS204397B1/en unknown
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