{"id":44397,"date":"2025-01-25T08:41:50","date_gmt":"2025-01-25T07:41:50","guid":{"rendered":"https:\/\/betoff.eu\/?p=44397"},"modified":"2025-01-25T08:41:50","modified_gmt":"2025-01-25T07:41:50","slug":"poskozeny-beton","status":"publish","type":"post","link":"https:\/\/betoff.eu\/cs\/poskozeny-beton\/","title":{"rendered":"PO\u0160KOZEN\u00dd BETON"},"content":{"rendered":"\r\n

PO\u0160KOZEN\u00dd BETON . P\u0158ERU\u0160TE BETON, ABYSTE SI ZAJI\u0160T\u011aLI VHODNOU ADHESII
Po\u0161kozen\u00ed betonu m\u016f\u017ee b\u00fdt za\u010d\u00e1tkem v\u00e1\u017en\u00fdch probl\u00e9m\u016f. Probl\u00e9m s betonem spo\u010d\u00edv\u00e1 v tom, \u017ee si nikdy nem\u016f\u017eete b\u00fdt jisti, jak se na n\u011bm \u00fader projev\u00ed.<\/p>\r\n\r\n\r\n\r\n

Tvrd\u0161\u00ed kamenivo se snadno vysype spolu s jemn\u00fdm prachem a cementovou pastou. Pevnost betonu v tlaku se na rozd\u00edl od oceli m\u011bn\u00ed. V d\u016fsledku toho trysk\u00e1n\u00ed nevede k ukotven\u00ed rozst\u0159iku ani ke konzistentn\u00edmu profilu povrchu. Povrch otryskan\u00e9ho betonu tvo\u0159\u00ed kr\u00e1ter vypln\u011bn\u00fd hlubok\u00fdmi \u017eilkami a p\u00f3ry.<\/p>\r\n\r\n\r\n\r\n

Opravn\u00e1 malta, betonov\u00fd p\u0159eklad a n\u00e1t\u011bry se mus\u00ed roztavit a prostoupit kapil\u00e1rn\u00ed s\u00edt\u00ed podkladu, aby byla zaru\u010dena spr\u00e1vn\u00e1 p\u0159ilnavost. P\u0159\u00edpadn\u00e1 ucpan\u00e1 s\u00ed\u0165 se p\u0159i trysk\u00e1n\u00ed odhal\u00ed, \u010d\u00edm\u017e se z\u00e1rove\u0148 zdrsn\u00ed betonov\u00fd ter\u00e9n a zviditeln\u00ed se kamenivo.<\/p>\r\n\r\n\r\n\r\n

Jak m\u016f\u017ee tryska\u010d zjistit, zda zm\u011b\u0159il hloubku v mikrometrech a zda dos\u00e1hl stanoven\u00e9ho profilu povrchu bez vrchol\u016f a \u00fadol\u00ed, na kter\u00e9 by musel aplikovat p\u00e1sku? Jak\u00e1 je definice profilu betonu?<\/p>\r\n\r\n\r\n\r\n

Existuj\u00ed dal\u0161\u00ed probl\u00e9my. Spr\u00e1vn\u011b p\u0159ipraven\u00fd betonov\u00fd povrch mus\u00ed b\u00fdt krom\u011b d\u016fkladn\u00e9ho o\u010di\u0161t\u011bn\u00ed tak\u00e9 neporu\u0161en\u00fd a zbaven\u00fd ne\u010distot. Proto\u017ee je v\u0161ak beton pom\u011brn\u011b por\u00e9zn\u00ed, \u0161kodliviny \u010dasto pronikaj\u00ed hluboko pod povrch a oslabuj\u00ed podklad do t\u00e9 m\u00edry, \u017ee se k n\u011bmu tryskac\u00ed za\u0159\u00edzen\u00ed nedostane. Jedinou \u010d\u00e1st\u00ed ztvrdl\u00e9 cementov\u00e9 hmoty, kterou je t\u0159eba odstranit p\u0159i jin\u00fdch aplikac\u00edch, jako jsou dekorativn\u00ed \u00fapravy povrchu, je sypk\u00e1 vrstva. Pokud je trysk\u00e1n\u00ed p\u0159\u00edli\u0161 siln\u00e9 nebo p\u0159\u00edli\u0161 slab\u00e9, co m\u00e1te d\u011blat?<\/p>\r\n\r\n\r\n\r\n

T\u011bmito a dal\u0161\u00edmi ot\u00e1zkami se zab\u00fdv\u00e1 tato p\u0159\u00edru\u010dka o p\u0159\u00edprav\u011b povrchu betonu. D\u00e1le je t\u0159eba porozum\u011bt tomu, jak a pro\u010d m\u016f\u017ee doj\u00edt k po\u0161kozen\u00ed betonu, a tak\u00e9 tomu, jak je napravit.<\/p>\r\n\r\n\r\n\r\n

POKRO\u010cIL\u00dd BETON Bezvadn\u00fd beton<\/h2>\r\n\r\n\r\n\r\n

P\u0159ilnavost mezi po\u0161kozen\u00fdm betonem a n\u00e1t\u011bry, plnivy nebo opravnou maltou lze zachovat. P\u0159esto se po\u0161kozen\u00fd beton p\u0159i tlaku od stropu odtrhne. Indik\u00e1tory po\u0161kozen\u00ed betonu, jako jsou mikrotrhliny, puch\u00fd\u0159e, odlupov\u00e1n\u00ed nebo delaminace, je t\u0159eba p\u0159ed povrchovou \u00fapravou vyplnit a vy\u010distit.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON. \u0160est ukazatel\u016f popraskan\u00e9ho betonu<\/h2>\r\n\r\n\r\n\r\n

Viditeln\u00e9 trhliny<\/h3>\r\n\r\n\r\n\r\n

Jedn\u00edm z nejv\u00fdrazn\u011bj\u0161\u00edch ukazatel\u016f degradace betonu jsou viditeln\u00e9 trhliny, kter\u00e9 mohou m\u00edt n\u011bkolik p\u0159\u00ed\u010din. Ke vzniku povrchov\u00fdch trhlin vede rychl\u00fd \u00fabytek povrchov\u00e9 vody b\u011bhem procesu vytvrzov\u00e1n\u00ed. Pokud jej polo\u017e\u00edte na podklad, m\u016f\u017ee se strop rozd\u011blit na dv\u011b \u010d\u00e1sti. P\u0159\u00ed\u010dinou mohou b\u00fdt trhliny, kter\u00e9 se stanou viditeln\u00fdmi hned p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed nebo n\u00e1razu, nebo mikrotrhliny, kter\u00e9 se \u010dasem stanou zjevn\u00fdmi.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON Drobn\u00e9 trhliny<\/h2>\r\n\r\n\r\n\r\n

Mikrotrhliny se m\u011b\u0159\u00ed v mikrometrov\u00e9 stupnici a jsou okem nepost\u0159ehnuteln\u00e9. Vznikaj\u00ed v d\u016fsledku zmrazov\u00e1n\u00ed a rozmrazov\u00e1n\u00ed, teplotn\u00edch v\u00fdkyv\u016f, ke kter\u00fdm doch\u00e1z\u00ed b\u011bhem hydratace cementu, p\u0159et\u011b\u017eov\u00e1n\u00ed, n\u00e1raz\u016f padaj\u00edc\u00edch z\u00e1va\u017e\u00ed a \u00fadern\u00fdch za\u0159\u00edzen\u00ed, jako jsou sb\u00edje\u010dky a kladiva. Kdy\u017e se v bl\u00edzkosti povrchu vytvo\u0159\u00ed s\u00ed\u0165 mikrotrhlin, vznikaj\u00ed tlakov\u00e9 stopy. Kdy\u017e se poru\u0161en\u00fd beton rozpadne, projev\u00ed se to na kamenivu.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON. Bubliny<\/h2>\r\n\r\n\r\n\r\n

K bublin\u00e1m doch\u00e1z\u00ed, kdy\u017e se pod povrchem zachyt\u00ed vzduchov\u00e9 bubliny a beton z nich nem\u016f\u017ee uniknout, nap\u0159\u00edklad v d\u016fsledku p\u0159ed\u010dasn\u00e9ho vysych\u00e1n\u00ed povrchu vlivem v\u011btru, pou\u017eit\u00ed p\u0159\u00edli\u0161 visk\u00f3zn\u00ed sm\u011bsi, kter\u00e1 povrch p\u0159\u00edli\u0161 rychle ut\u011bsn\u00ed, nebo p\u0159ed\u010dasn\u00e9ho nanesen\u00ed tmelu na beton.<\/p>\r\n\r\n\r\n\r\n

Beton<\/h2>\r\n\r\n\r\n\r\n

Kdy\u017e voda v p\u00f3rech a kapil\u00e1r\u00e1ch betonu zmrzne, doch\u00e1z\u00ed k jej\u00edmu zkr\u00e1p\u011bn\u00ed. Praskl\u00e1 malta se odlom\u00ed od povrchu a odhal\u00ed kamenivo, kdy\u017e hydraulick\u00fd tlak rostouc\u00edho ledu p\u0159ekon\u00e1 pevnost betonu v lomu.<\/p>\r\n\r\n\r\n\r\n

Zne\u010di\u0161t\u011bn\u00ed a sp\u00e1rov\u00e1n\u00ed jsou srovnateln\u00e9, ale sp\u00e1rov\u00e1n\u00ed se roz\u0161i\u0159uje d\u00e1le do betonu. V d\u016fsledku toho se povrch l\u00e1me na v\u011bt\u0161\u00ed kusy. Mezi b\u011b\u017en\u00e9 p\u0159\u00ed\u010diny pat\u0159\u00ed koroze v\u00fdztu\u017en\u00e9 oceli vyvolan\u00e1 karbonatac\u00ed, nadm\u011brn\u00e9 teplo zp\u016fsobuj\u00edc\u00ed velmi rychlou expanzi vodn\u00edch par, \u0161patn\u011b proveden\u00e9 spoje a v\u011bt\u0161\u00ed trhliny.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON. Uspo\u0159\u00e1d\u00e1n\u00ed<\/h2>\r\n\r\n\r\n\r\n

Kdy\u017e je povrchov\u00e1 \u00faprava nanesena d\u0159\u00edve, ne\u017e m\u016f\u017ee z betonu unikat vzduch a voda, zp\u016fsobuje delaminaci, kter\u00e1 je charakterizov\u00e1na dutou vodorovnou \u00farovn\u00ed pod povrchem. Kdy\u017e se oblast delaminace vlivem provozu nebo siln\u00e9ho zat\u00ed\u017een\u00ed odd\u011bl\u00ed od betonov\u00e9 desky, dojde k obna\u017een\u00ed kameniva.<\/p>\r\n\r\n\r\n\r\n

Poru\u0161en\u00fd beton. \u0160est d\u016fvod\u016f, pro\u010d doch\u00e1z\u00ed k po\u0161kozen\u00ed betonu<\/h2>\r\n\r\n\r\n\r\n

Proces karbonatace<\/h3>\r\n\r\n\r\n\r\n

Kdy\u017e se oxid uhli\u010dit\u00fd spoj\u00ed s vlhkost\u00ed a hydroxidem v\u00e1penat\u00fdm v cementu a pronikne na povrch p\u00f3ry a mikrotrhlinami, doch\u00e1z\u00ed ke karbonizaci. N\u00e1sledkem toho vznik\u00e1 uhli\u010ditan v\u00e1penat\u00fd. V d\u016fsledku toho beton nejprve ztvrdne. Z\u00e1rove\u0148 v\u0161ak doch\u00e1z\u00ed ke sn\u00ed\u017een\u00ed hodnoty pH z 13 na 8. V d\u016fsledku tohoto sn\u00ed\u017een\u00ed z\u00e1saditosti je ulo\u017een\u00e1 ocelov\u00e1 v\u00fdztu\u017e n\u00e1chyln\u00e1 ke korozi.<\/p>\r\n\r\n\r\n\r\n

Koroze \u017eelezobetonu<\/h2>\r\n\r\n\r\n\r\n

Rez, kter\u00e1 je tvo\u0159ena hydratovan\u00fdm \u017eelezem, je t\u011b\u017e\u0161\u00ed ne\u017e ocel, kterou nahrazuje. Tahov\u00e9 nap\u011bt\u00ed vyvolan\u00e9 rozp\u00ednaj\u00edc\u00ed se hmotou rzi vytv\u00e1\u0159\u00ed v betonu trhliny, kter\u00e9 se nakonec odlupuj\u00ed.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON. Chemick\u00e9 po\u0161kozen\u00ed<\/h2>\r\n\r\n\r\n\r\n

S\u00edrany reaguj\u00ed s hydratovan\u00fdmi slo\u017ekami v podzemn\u00ed vod\u011b, kter\u00e1 prosakuje betonem a rozp\u00edn\u00e1 se. To m\u00e1 za n\u00e1sledek mechanick\u00e9 po\u0161kozen\u00ed. Chemick\u00e9 l\u00e1tky mohou tak\u00e9 rozkl\u00e1dat, degradovat a oslabovat cementovou pastu.<\/p>\r\n\r\n\r\n\r\n

Po\u0161kozen\u00ed ohn\u011bm<\/h2>\r\n\r\n\r\n\r\n

A\u010dkoli beton neho\u0159\u00ed, p\u0159i p\u0159\u00edli\u0161n\u00e9m zah\u0159\u00e1t\u00ed ztr\u00e1c\u00ed v\u011bt\u0161inu sv\u00e9 pru\u017enosti a pevnosti v ohybu a tlaku. Odlupov\u00e1n\u00ed betonu m\u016f\u017ee b\u00fdt zp\u016fsobeno rozp\u00ednaj\u00edc\u00ed se vodn\u00ed p\u00e1rou, kter\u00e1 se sna\u017e\u00ed uniknout.<\/p>\r\n\r\n\r\n\r\n

P\u0159et\u00ed\u017een\u00ed a jeho \u00fa\u010dinky<\/h2>\r\n\r\n\r\n\r\n

Mikrotrhliny a trhliny vznikaj\u00ed v betonu, kdy\u017e je vystaven siln\u00e9mu nam\u00e1h\u00e1n\u00ed, zejm\u00e9na n\u00e1raz\u016fm. Rozs\u00e1hl\u00e9 mikrotrhliny mohou vznikat p\u0159i \u00faderu n\u00e1\u0159ad\u00edm.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON. P\u0159\u00edli\u0161 vlhk\u00fd beton<\/h2>\r\n\r\n\r\n\r\n

Pokud je ve sm\u011bsi p\u0159\u00edli\u0161 mnoho vody, cement prosakuje na povrch. Vysych\u00e1n\u00ed povrchu p\u0159ed jeho zatuhnut\u00edm zp\u016fsobuje cementov\u00e9 sp\u00e1rov\u00e1n\u00ed, smr\u0161\u0165ov\u00e1n\u00ed, prask\u00e1n\u00ed a sn\u00ed\u017eenou odolnost proti tlaku.<\/p>\r\n\r\n\r\n\r\n

Poru\u0161en\u00fd beton. Zji\u0161t\u011bn\u00ed po\u0161kozen\u00ed betonu<\/h2>\r\n\r\n\r\n\r\n

Vizu\u00e1ln\u00ed prohl\u00eddka povrchu m\u016f\u017ee pomoci p\u0159i identifikaci nejhor\u0161\u00edch po\u0161kozen\u00ed, mezi n\u011b\u017e pat\u0159\u00ed delaminace, trhliny a sp\u00e1dov\u00e1n\u00ed. N\u011bkdy je v\u0161ak obt\u00ed\u017en\u00e9 zjistit, jak velk\u00e9 je po\u0161kozen\u00ed betonu.<\/p>\r\n\r\n\r\n\r\n

Nejjednodu\u0161\u0161\u00edm p\u0159\u00edstupem k identifikaci slab\u00fdch m\u00edst je pou\u017eit\u00ed poklepu kladivem. V betonu je dobr\u00e1 pevnost v tlaku, kdy\u017e se hlava kladiva odraz\u00ed. Pokud hlava kladiva prom\u00e1\u010dkne a rozpr\u00e1\u0161\u00ed povrch, je t\u0159eba beton odstranit.<\/p>\r\n\r\n\r\n\r\n

Zhor\u0161en\u00ed stavu betonu lze tak\u00e9 identifikovat p\u0159ejet\u00edm \u0161roubov\u00e1ku po povrchu. Beton je v po\u0159\u00e1dku, pokud \u0161roubov\u00e1k za sebou zanech\u00e1v\u00e1 jasn\u011b b\u00edlou stopu. Pokud \u0161roubov\u00e1k po\u0161kr\u00e1be pr\u00e1\u0161ek, beton se po\u0161kod\u00ed.<\/p>\r\n\r\n\r\n\r\n

Obt\u00ed\u017en\u011bji se identifikuj\u00ed situace, kdy se pod povrchem vytvo\u0159il vzduch, voda nebo nenasycen\u00fd materi\u00e1l, proto\u017ee povrch m\u016f\u017ee b\u00fdt st\u00e1le dostate\u010dn\u011b neporu\u0161en\u00fd, aby pro\u0161el zkou\u0161kou \u0161roubov\u00e1kem nebo kladivem. Doch\u00e1z\u00ed v\u0161ak k po\u0161kozen\u00ed struktury betonu. Oblasti s r\u016fznou hustotou lze rozli\u0161it poslechem zvuku vyd\u00e1van\u00e9ho p\u0159i poklep\u00e1v\u00e1n\u00ed na beton. Tyto dutiny lze nal\u00e9zt v rozs\u00e1hl\u00fdch oblastech bu\u010f vyu\u017eit\u00edm za\u0159\u00edzen\u00ed, kter\u00e9 povrch zaml\u017e\u00ed postupn\u00fdm \u0159et\u011bzen\u00edm, nebo p\u0159ejet\u00edm \u0159et\u011bzu po povrchu.<\/p>\r\n\r\n\r\n\r\n

S odstra\u0148ov\u00e1n\u00edm lze za\u010d\u00edt, jakmile je zji\u0161t\u011bn stupe\u0148 po\u0161kozen\u00ed betonu.<\/p>\r\n\r\n\r\n\r\n

PO\u0160KOZEN\u00dd BETON: Odstra\u0148ov\u00e1n\u00ed po\u0161kozen\u00e9ho betonu<\/h2>\r\n\r\n\r\n\r\n

Pokud je po\u0161kozena v\u011bt\u0161ina povrchu betonu, doporu\u010duje se k odstran\u011bn\u00ed po\u0161kozen\u00e9 vrstvy pou\u017e\u00edt mechanick\u00e9 metody (popsan\u00e9 n\u00ed\u017ee). Obl\u00edbenou technikou je pou\u017eit\u00ed kladiva, sb\u00edje\u010dky, kladiva na beton nebo jin\u00e9ho \u00fadern\u00e9ho n\u00e1stroje k rozbit\u00ed poru\u0161en\u00e9ho betonu v ur\u010dit\u00fdch oblastech posti\u017een\u00fdch m\u00edst, je-li to nutn\u00e9.<\/p>\r\n\r\n\r\n\r\n

Skv\u011bl\u00fdm postupem je za\u010d\u00edt uprost\u0159ed slab\u00e9ho m\u00edsta a postupovat a\u017e k okraj\u016fm. Ale i p\u0159i pou\u017eit\u00ed tenk\u00e9 vrstvy epoxidov\u00e9 nebo cementov\u00e9 v\u00fdpln\u011b k oprav\u011b d\u011br nebo prom\u00e1\u010dklin je t\u0159eba se vyhnout ostr\u00fdm hran\u00e1m: Vrstva se nakonec stane p\u0159\u00edli\u0161 tenkou na to, aby zcela pokryla povrch s profilem. Lep\u0161\u00ed pevnosti v tahu lze dos\u00e1hnout sra\u017een\u00edm hlubok\u00fdch ostr\u00fdch hran; p\u0159esto se nejl\u00e9pe osv\u011bd\u010duje pod\u0159\u00edznut\u00e1 nebo svisl\u00e1 hrana.<\/p>\r\n\r\n\r\n\r\n

P\u0159i vypl\u0148ov\u00e1n\u00ed d\u016flku nebo prom\u00e1\u010dklin betonem nebo jin\u00fdm siln\u00fdm kompozitem se doporu\u010duje vytvo\u0159it kolem po\u0161kozen\u00e9 oblasti pravo\u00fahlou hranu pomoc\u00ed \u0159ez\u016f pilou. Pravo\u00fahl\u00e1 hrana vznikne p\u0159i \u00faderu sm\u011brem ven k okraji, proto\u017ee se povrchov\u00fd materi\u00e1l v \u0159ezu odlom\u00ed.<\/p>\r\n\r\n\r\n\r\n

Rozbit\u00fd beton. Oprava po\u0161kozen\u00ed betonu<\/h2>\r\n\r\n\r\n\r\n

Po odstran\u011bn\u00ed po\u0161kozen\u00e9ho betonu lze otvory nebo dutiny opravit betonem, maltou, tmelem, epoxidem nebo jin\u00fdm opravn\u00fdm roztokem. Dutiny v betonu je nav\u00edc nutn\u00e9 vyplnit, aby byla zachov\u00e1na celistvost konstrukce.<\/p>\r\n\r\n\r\n\r\n

Pou\u017eit\u00ed trysk\u00e1n\u00ed p\u0159i odstra\u0148ov\u00e1n\u00ed betonu<\/h2>\r\n\r\n\r\n\r\n

Ve f\u00e1zi odstra\u0148ov\u00e1n\u00ed betonu mohou provozovatel\u00e9 trysk\u00e1n\u00ed man\u00e9vrovat dv\u011bma zp\u016fsoby.<\/p>\r\n\r\n\r\n\r\n

P\u00f3ry napln\u011bn\u00e9 prachem lemuj\u00ed hladk\u00e9 svisl\u00e9 povrchy, kter\u00e9 z\u016fstaly po \u0159ez\u00e1n\u00ed pilou. Aby se vytvo\u0159ila kontaktn\u00ed plocha pro opravn\u00fd materi\u00e1l, otrysk\u00e1vac\u00ed postupy otev\u00edraj\u00ed p\u00f3ry a zdrs\u0148uj\u00ed povrch.<\/p>\r\n\r\n\r\n\r\n

P\u0159i odstra\u0148ov\u00e1n\u00ed po\u0161kozen\u00e9ho betonu pomoc\u00ed r\u00e1zov\u00fdch n\u00e1stroj\u016f vznikaj\u00ed rozs\u00e1hl\u00e9 mikrotrhliny. C\u00edl opravy povrchu, kter\u00fd byl naru\u0161en mikrotrhlinami, je zma\u0159en. Nejlep\u0161\u00ed technikou pro odstran\u011bn\u00ed povrchov\u00fdch mikrotrhlin je p\u00edskov\u00e1n\u00ed.<\/p>\r\n\r\n\r\n\r\n

Rozbit\u00fd beton. Oprava po\u0161kozen\u00e9ho betonu<\/h2>\r\n\r\n\r\n\r\n

D\u00edry nebo dutiny lze po odstran\u011bn\u00ed po\u0161kozen\u00e9ho betonu vyplnit betonem, maltou, tmelem, epoxidem nebo jin\u00fdm typem opravn\u00e9ho roztoku. D\u00e1le je t\u0159eba vyplnit dutiny v betonu, aby vznikl ucelen\u00fd.<\/p>\r\n\r\n\r\n\r\n

Jak vy\u010distit beton?<\/h2>\r\n\r\n\r\n\r\n

Na\u0161\u00edm nejlep\u0161\u00edm \u010distic\u00edm prost\u0159edkem na beton je BETOFF-B<\/a>, kter\u00fd snadno odstran\u00ed ve\u0161ker\u00e9 ne\u010distoty. Je 100%<\/a> biologicky odbourateln\u00e1<\/a>, nezap\u00e1ch\u00e1 a p\u0159i pou\u017eit\u00ed se nedus\u00ed.<\/p>\r\n\r\n\r\n\r\n

\"PO\u0160KOZEN\u00dd<\/figure>\r\n\r\n\r\n\r\n

Jak rozpustit ne\u010distoty z cementu a betonu?<\/h2>\r\n\r\n\r\n\r\n

Nejlep\u0161\u00ed<\/a> tekutinou pro rozpou\u0161t\u011bn\u00ed<\/a> zaschl\u00e9ho betonu je BETOFF<\/a> (koncentr\u00e1t), kter\u00fd snadno zm\u011bn\u00ed beton na bl\u00e1to.<\/p>\r\n\r\n\r\n\r\n

\"BETON\"<\/figure>\r\n\r\n\r\n","protected":false},"excerpt":{"rendered":"

PO\u0160KOZEN\u00dd BETON . P\u0158ERU\u0160TE BETON, ABYSTE SI ZAJI\u0160T\u011aLI VHODNOU ADHESIIPo\u0161kozen\u00ed betonu m\u016f\u017ee b\u00fdt za\u010d\u00e1tkem v\u00e1\u017en\u00fdch probl\u00e9m\u016f. Probl\u00e9m s betonem spo\u010d\u00edv\u00e1 v tom, \u017ee si nikdy nem\u016f\u017eete b\u00fdt jisti, jak se na n\u011bm \u00fader projev\u00ed. Tvrd\u0161\u00ed kamenivo se snadno vysype spolu s jemn\u00fdm prachem a cementovou pastou. Pevnost betonu v tlaku se na rozd\u00edl od oceli […]\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[570],"tags":[],"class_list":["post-44397","post","type-post","status-publish","format-standard","hentry","category-news-5"],"yoast_head":"\nPO\u0160KOZEN\u00dd BETON - BETOFF-Produkty pro sv\u011bt betonu i mimo n\u011bj!<\/title>\n<meta name=\"description\" content=\"PO\u0160KOZEN\u00dd BETON. Ako opravi\u0165 po\u0161koden\u00fd bet\u00f3n? Ak\u00fa kvapalinu pou\u017ei\u0165 na \u010distenie bet\u00f3nov\u00e9ho povrchu? 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