{"id":7515,"date":"2025-10-20T21:27:40","date_gmt":"2025-10-20T13:27:40","guid":{"rendered":"https:\/\/www.qualitester.com\/?page_id=7515"},"modified":"2025-10-22T16:49:26","modified_gmt":"2025-10-22T08:49:26","slug":"astm-d4833","status":"publish","type":"page","link":"https:\/\/www.qualitester.com\/cs\/standards\/astm-d4833\/","title":{"rendered":"ASTM D4833"},"content":{"rendered":"

ASTM D4833
\nZkou\u0161ka odolnosti geomembr\u00e1n proti prop\u00edchnut\u00ed<\/small><\/h1>\n

ASTM D4833, ofici\u00e1ln\u00ed n\u00e1zev Standardn\u00ed zku\u0161ebn\u00ed metoda pro indexovou odolnost geomembr\u00e1n a souvisej\u00edc\u00edch v\u00fdrobk\u016f proti prora\u017een\u00ed<\/em>, je v\u0161eobecn\u011b uzn\u00e1vanou normou vypracovanou spole\u010dnost\u00ed ASTM International. Tato metoda hodnot\u00ed odolnost geomembr\u00e1n proti prop\u00edchnut\u00ed - kl\u00ed\u010dovou vlastnost materi\u00e1l\u016f pou\u017e\u00edvan\u00fdch v oblasti ochrany \u017eivotn\u00edho prost\u0159ed\u00ed, stavebnictv\u00ed a in\u017een\u00fdrsk\u00fdch aplikac\u00ed.
Geomembr\u00e1ny slou\u017e\u00ed jako nepropustn\u00e9 bari\u00e9ry na skl\u00e1dk\u00e1ch, v rybn\u00edc\u00edch a n\u00e1dr\u017e\u00edch, tak\u017ee pochopen\u00ed jejich odolnosti proti prora\u017een\u00ed je z\u00e1sadn\u00ed pro zaji\u0161t\u011bn\u00ed dlouhodob\u00e9 \u017eivotnosti a prevenci \u00faniku nebo selh\u00e1n\u00ed konstrukce.<\/p>\n

Porozum\u011bn\u00ed zkou\u0161ce odolnosti geomembr\u00e1n proti prop\u00edchnut\u00ed<\/h2>\n

Na str\u00e1nk\u00e1ch zkou\u0161ka prop\u00edchnut\u00ed geomembr\u00e1n<\/strong> popsan\u00e1 v norm\u011b ASTM D4833 ur\u010duje odolnost materi\u00e1lu proti prop\u00edchnut\u00ed v kontrolovan\u00fdch laboratorn\u00edch podm\u00ednk\u00e1ch. P\u0159i tomto postupu se zku\u0161ebn\u00ed vzorek sev\u0159en\u00fd mezi dv\u011bma kruhov\u00fdmi deskami<\/strong> a p\u016fsob\u00ed na n\u011b svisl\u00e1 s\u00edla pomoc\u00ed pevn\u00e9 ocelov\u00e9 ty\u010de, dokud nedojde k prasknut\u00ed. Maxim\u00e1ln\u00ed zaznamenan\u00e1 s\u00edla p\u0159edstavuje odolnost proti prop\u00edchnut\u00ed<\/strong> vzorku.<\/p>\n

Tento test se obvykle prov\u00e1d\u00ed pomoc\u00ed tahov\u00fd zku\u0161ebn\u00ed stroj vybaven\u00fd krou\u017ekovou svorkou a sestavou d\u011brovac\u00ed ty\u010de.<\/strong>. Testovac\u00ed rychlost se udr\u017euje na hodnot\u011b 300 \u00b1 10 mm\/min<\/em>, co\u017e zaji\u0161\u0165uje konzistentn\u00ed m\u00edru deformace u v\u0161ech vzork\u016f. Podle normy by m\u011blo doj\u00edt k prasknut\u00ed mezi 10% a 90% pln\u00e9ho zat\u00ed\u017een\u00ed<\/em> aby byly zaji\u0161t\u011bny platn\u00e9 v\u00fdsledky.<\/p>\n

Pro\u010d je test odolnosti geomembr\u00e1n proti prop\u00edchnut\u00ed d\u016fle\u017eit\u00fd?<\/h2>\n

Na str\u00e1nk\u00e1ch zkou\u0161ka odolnosti geomembr\u00e1n proti prop\u00edchnut\u00ed<\/strong> hraje kl\u00ed\u010dovou roli p\u0159i kontrole kvality a v\u00fdb\u011bru materi\u00e1lu. Odolnost proti prora\u017een\u00ed p\u0159\u00edmo ovliv\u0148uje, jak dob\u0159e geomembr\u00e1na odol\u00e1 nam\u00e1h\u00e1n\u00ed p\u0159i instalaci, kontaktu s ostr\u00fdm kamenivem nebo tlaku zasyp\u00e1vac\u00edch materi\u00e1l\u016f.<\/p>\n

Norma ASTM D4833 stanov\u00ed hodnoty indexu<\/strong> sp\u00ed\u0161e ne\u017e absolutn\u00ed \u00fadaje o v\u00fdkonnosti v ter\u00e9nu. Tyto hodnoty umo\u017e\u0148uj\u00ed in\u017een\u00fdr\u016fm, v\u00fdrobc\u016fm a zku\u0161ebn\u00e1m porovn\u00e1vat relativn\u00ed pevnost r\u016fzn\u00fdch geomembr\u00e1nov\u00fdch v\u00fdrobk\u016f za standardizovan\u00fdch podm\u00ednek. Konzistentn\u00ed \u00fadaje zvy\u0161uj\u00ed jistotu p\u0159i v\u00fdb\u011bru v\u00fdrobku, dodr\u017eov\u00e1n\u00ed specifikac\u00ed a p\u0159edpov\u00edd\u00e1n\u00ed dlouhodob\u00e9 v\u00fdkonnosti.<\/p>\n

Kl\u00ed\u010dov\u00e9 body postupu pro testov\u00e1n\u00ed podle normy ASTM D4833<\/h2>\n

Pro zaji\u0161t\u011bn\u00ed spolehliv\u00fdch a opakovateln\u00fdch v\u00fdsledk\u016f by laborato\u0159e m\u011bly pe\u010dliv\u011b dodr\u017eovat postupy podle normy ASTM D4833:<\/p>\n

    \n
  1. P\u0159\u00edprava vzork\u016f:<\/strong> Zku\u0161ebn\u00ed vzorek mus\u00ed sahat a\u017e k vn\u011bj\u0161\u00edm okraj\u016fm up\u00ednac\u00edch desek nebo je p\u0159esahovat, aby nedo\u0161lo k jejich prokluzu.<\/li>\n
  2. Aplikace na\u010d\u00edt\u00e1n\u00ed:<\/strong> Zku\u0161ebn\u00ed stroj p\u016fsob\u00ed svislou silou p\u0159es ocelovou propichovac\u00ed ty\u010d a\u017e do \u00fapln\u00e9ho roztr\u017een\u00ed.<\/li>\n
  3. Z\u00e1znam dat:<\/strong> Na str\u00e1nk\u00e1ch maxim\u00e1ln\u00ed hodnota s\u00edly<\/strong> b\u011bhem zkou\u0161ky p\u0159edstavuje odolnost materi\u00e1lu proti prop\u00edchnut\u00ed. U kompozitn\u00edch geomembr\u00e1n se po\u010d\u00e1te\u010dn\u00ed \u0161pi\u010dkov\u00e1 s\u00edla<\/strong> je hl\u00e1\u0161en, i kdy\u017e se pozd\u011bji objev\u00ed druh\u00fd vy\u0161\u0161\u00ed vrchol.<\/li>\n
  4. Zku\u0161ebn\u00ed kontrola:<\/strong> Rychlost testov\u00e1n\u00ed a podm\u00ednky prost\u0159ed\u00ed mus\u00ed b\u00fdt u v\u0161ech vzork\u016f stejn\u00e9.<\/li>\n<\/ol>\n

    Tyto \u00fadaje zaji\u0161\u0165uj\u00ed, \u017ee zkou\u0161ka pevnosti geomembr\u00e1n v pr\u016frazu<\/strong> v\u00fdsledky jsou p\u0159esn\u00e9, srovnateln\u00e9 a sledovateln\u00e9.<\/p>\n

    Aplikace a v\u00fdhody testov\u00e1n\u00ed podle normy ASTM D4833<\/h2>\n

    Porozum\u011bn\u00ed odolnosti proti prop\u00edchnut\u00ed pom\u00e1h\u00e1 u\u017eivatel\u016fm p\u0159edv\u00eddat v\u00fdkonnost geomembr\u00e1n v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch. V\u00fdhody testov\u00e1n\u00ed podle normy ASTM D4833:<\/p>\n