Geomembr\u00e1ny, obvykle vyroben\u00e9 z materi\u00e1l\u016f jako nap\u0159. HDPE<\/strong>, LDPE<\/strong>, PVC<\/strong>a fPP<\/strong>, se hojn\u011b pou\u017e\u00edvaj\u00ed jako bari\u00e9ry v in\u017een\u00fdrsk\u00fdch stavb\u00e1ch. Jejich \u00fa\u010dinnost siln\u011b z\u00e1vis\u00ed na kvalit\u011b \u0161v\u016f, kter\u00e9 spojuj\u00ed jednotliv\u00e9 listy geomembr\u00e1ny. Pro posouzen\u00ed celistvost t\u011bchto \u0161v\u016f<\/strong>, ASTM D6392<\/strong> uv\u00e1d\u00ed dva kl\u00ed\u010dov\u00e9 destruktivn\u00ed testy: testov\u00e1n\u00ed slupky<\/strong> a smykov\u00e1 zkou\u0161ka<\/strong>.<\/p>\n\n\n\n The test loup\u00e1n\u00ed<\/strong> zahrnuje odlepen\u00ed geomembr\u00e1nov\u00e9ho \u0161vu pod \u00fahlem 90 stup\u0148\u016f. Vzorek se uchop\u00ed na obou konc\u00edch a pou\u017eije se konstantn\u00ed rychlost k\u0159\u00ed\u017eov\u00e9 hlavy stroje. U materi\u00e1l\u016f, jako je nap\u0159. HDPE<\/strong>, PVC<\/strong>a LMDPE<\/strong>, typick\u00e1 rychlost je 50 mm\/min<\/strong>. Pro LLDPE<\/strong> a jin\u00fdch pru\u017en\u00fdch materi\u00e1l\u016f se rychlost m\u016f\u017ee zv\u00fd\u0161it a\u017e na 500 mm\/min<\/strong>. C\u00edlem je zjistit, jak velk\u00e1 s\u00edla je zapot\u0159eb\u00ed k odd\u011blen\u00ed spojen\u00fdch vrstev geomembr\u00e1n.<\/p>\n\n\n\n Tato zkou\u0161ka simuluje typ nam\u00e1h\u00e1n\u00ed, kter\u00e9mu mohou b\u00fdt geomembr\u00e1ny vystaveny v ter\u00e9nu, nap\u0159\u00edklad p\u0159i hydraulick\u00e9m tlaku. Vysok\u00fd pevnost p\u0159i odlupov\u00e1n\u00ed<\/strong> nazna\u010duje, \u017ee \u0161ev dok\u00e1\u017ee \u00fa\u010dinn\u011b odol\u00e1vat separa\u010dn\u00edm sil\u00e1m, co\u017e zaji\u0161\u0165uje, \u017ee geomembr\u00e1na z\u016fstane v pr\u016fb\u011bhu \u010dasu neporu\u0161en\u00e1.<\/p>\n\n\n\n Zkou\u0161ka smykem<\/strong> m\u011b\u0159\u00ed odolnost geomembr\u00e1nov\u00e9ho spoje v\u016f\u010di bo\u010dn\u00edm sil\u00e1m. P\u0159i t\u00e9to zkou\u0161ce se vzorek uchop\u00ed na obou konc\u00edch a p\u016fsob\u00ed se na n\u011bj smykov\u00fdmi silami, aby se zjistilo, jak velk\u00e1 s\u00edla je zapot\u0159eb\u00ed k vyvol\u00e1n\u00ed poruchy pod\u00e9l \u0161vu. Smykov\u00e1 zkou\u0161ka je kl\u00ed\u010dov\u00e1 pro pochopen\u00ed toho, jak geomembr\u00e1na obstoj\u00ed, kdy\u017e je vystavena smykov\u00e9mu nam\u00e1h\u00e1n\u00ed, jako jsou t\u0159ec\u00ed s\u00edly na skl\u00e1dk\u00e1ch nebo v rybn\u00edc\u00edch.<\/p>\n\n\n\n Pro HDPE<\/strong> a LMDPE<\/strong>, zkou\u0161ka pokra\u010duje, dokud se vzorek neprodlou\u017e\u00ed o 50%<\/strong>. U pru\u017en\u011bj\u0161\u00edch materi\u00e1l\u016f, jako je nap\u0159. LLDPE<\/strong> a PVC<\/strong>, zkou\u0161ka pokra\u010duje, dokud vzorek nepraskne. To pom\u00e1h\u00e1 m\u011b\u0159it pevnost ve smyku<\/strong> \u0161vu, co\u017e je rozhoduj\u00edc\u00ed pro zachov\u00e1n\u00ed integrity geomembr\u00e1ny p\u0159i dynamick\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n\n\n\n Materi\u00e1ly testovan\u00e9 podle ASTM D6392<\/strong> zahrnout:<\/p>\n\n\n\n HDPE (polyethylen vysok\u00e9 hustoty)<\/strong><\/p><\/li>\n\n\n\n LLDPE (line\u00e1rn\u00ed polyethylen n\u00edzk\u00e9 hustoty)<\/strong><\/p><\/li>\n\n\n\n PVC (polyvinylchlorid)<\/strong><\/p><\/li>\n\n\n\n fPP (flexibiln\u00ed polypropylen)<\/strong><\/p><\/li>\n\n\n\n VLDPE (polyethylen s velmi n\u00edzkou hustotou)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n Zkou\u0161ka hodnot\u00ed tak\u00e9 \u0161vy vytvo\u0159en\u00e9 r\u016fzn\u00fdmi technikami tepeln\u00e9ho taven\u00ed, v\u010detn\u011b hork\u00fd vzduch<\/strong>, hork\u00fd kl\u00edn<\/strong>a vytla\u010dov\u00e1n\u00ed<\/strong>. Ka\u017ed\u00e1 z t\u011bchto metod vytv\u00e1\u0159\u00ed jin\u00fd typ spoje mezi geomembr\u00e1nami a testy pom\u00e1haj\u00ed ur\u010dit nejl\u00e9pe funguj\u00edc\u00ed spoje v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n The zkou\u0161ka geomembr\u00e1nov\u00fdch \u0161v\u016f<\/strong> jak je uvedeno v ASTM D6392<\/strong> hraje z\u00e1sadn\u00ed roli v zaji\u0161t\u011bn\u00ed kvality<\/strong> a kontrola kvality<\/strong> pro v\u00fdstavbu geomembr\u00e1nov\u00fdch syst\u00e9m\u016f. Pou\u017eit\u00edm test pevnosti v odlupov\u00e1n\u00ed<\/strong> a zkou\u0161ka pevnosti ve smyku<\/strong>, mohou technici a pracovn\u00edci kontroly kvality posoudit spolehlivost geomembr\u00e1nov\u00fdch \u0161v\u016f p\u0159ed instalac\u00ed. Spr\u00e1vn\u00e9 testov\u00e1n\u00ed zajist\u00ed, \u017ee p\u0159\u00edpadn\u00e9 probl\u00e9my se \u0161vy, jako jsou slab\u00e9 spoje nebo poruchy p\u0159i nam\u00e1h\u00e1n\u00ed, budou identifikov\u00e1ny a opraveny b\u011bhem v\u00fdrobn\u00ed f\u00e1ze.<\/p>\n\n\n\n Tento proaktivn\u00ed p\u0159\u00edstup k testov\u00e1n\u00ed pom\u00e1h\u00e1 p\u0159edch\u00e1zet potenci\u00e1ln\u00edm selh\u00e1n\u00edm v provozu, kter\u00e1 by mohla v\u00e9st ke kontaminaci, \u00faniku nebo jin\u00fdm probl\u00e9m\u016fm s v\u00fdkonem. V odv\u011btv\u00edch, jako je nakl\u00e1d\u00e1n\u00ed s odpady, zadr\u017eov\u00e1n\u00ed vody a t\u011b\u017eebn\u00ed pr\u016fmysl, je t\u0159eba zajistit, aby se neporu\u0161enost geomembr\u00e1nov\u00fdch \u0161v\u016f<\/strong> je z\u00e1sadn\u00ed pro dlouhodobou ochranu \u017eivotn\u00edho prost\u0159ed\u00ed a provozn\u00ed \u00fasp\u011bch.<\/p>\n\n\n\n ASTM D6392<\/strong> poskytuje spolehliv\u00fd r\u00e1mec pro testov\u00e1n\u00ed kvality geomembr\u00e1nov\u00fdch \u0161v\u016f, kter\u00e9 jsou kritick\u00e9 v aplikac\u00edch vy\u017eaduj\u00edc\u00edch nepropustnost. Prov\u00e1d\u011bn\u00edm peelingov\u00e9 testy<\/strong> a smykov\u00e9 zkou\u0161ky<\/strong>, mohou v\u00fdrobci a t\u00fdmy kontroly kvality ov\u011b\u0159it, zda \u0161vy geomembr\u00e1n obstoj\u00ed v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch. Pomoc\u00ed webu Testovac\u00ed \u0159e\u0161en\u00ed Cell Instruments'<\/strong>, mohou pr\u016fmyslov\u00e1 odv\u011btv\u00ed zajistit, aby jejich geomembr\u00e1nov\u00e9 v\u00fdrobky spl\u0148ovaly nejvy\u0161\u0161\u00ed standardy odolnosti a v\u00fdkonnosti.<\/p>\n\n\n\nTestov\u00e1n\u00ed peelingu<\/h3>\n\n\n\n
Zkou\u0161ka smykem<\/h3>\n\n\n\n
Zku\u0161ebn\u00ed materi\u00e1ly a metody \u0161it\u00ed<\/h2>\n\n\n\n
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V\u00fdznam normy ASTM D6392 p\u0159i kontrole kvality<\/h2>\n\n\n\n
Kontaktujte n\u00e1s Z\u00edskejte \u0159e\u0161en\u00ed pro testov\u00e1n\u00ed geomembr\u00e1nov\u00fdch \u0161v\u016f <\/h2>\n\n\n\n