{"id":1101,"date":"2026-04-02T08:08:40","date_gmt":"2026-04-02T08:08:40","guid":{"rendered":"https:\/\/www.geo-tester.com\/?post_type=standard&#038;p=1101"},"modified":"2026-04-08T05:59:57","modified_gmt":"2026-04-08T05:59:57","slug":"astm-d5494","status":"publish","type":"standard","link":"https:\/\/www.geo-tester.com\/lt\/standard\/astm-d5494\/","title":{"rendered":"ASTM D5494"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Supratimas apie <strong>ASTM D5494<\/strong> \u0160is standartas yra itin svarbus vertinant ilgaam\u017ei\u0161kum\u0105 ir atsparum\u0105 prad\u016brimams <strong>geomembranos<\/strong>, nesvarbu, ar jos yra neapsaugotos, ar sutvirtintos neaustin\u0117mis geotekstil\u0117mis. \u0160is standartas numato patikim\u0105 metod\u0105, leid\u017eiant\u012f \u012fvertinti geomembran\u0173 savybes veikiant pradurimo apkrovai, taip u\u017etikrinant, kad med\u017eiagos atitikt\u0173 kokyb\u0117s ir saugos reikalavimus, keliamus \u012fvairioms pramonin\u0117ms taikymo sritims.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geomembran\u0173 atsparumo piramid\u0117s formos \u012fd\u016brimui bandymas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Svetain\u0117 <strong>piramid\u0117s atsparumo prad\u016brimui bandymas<\/strong> tai indeksinis bandymas, kurio metu matuojamas geomembranos stiprumas, kai ji veikiama piramid\u0117s formos plieniniu \u012fspaudimo \u012ftaisu. \u0160i proced\u016bra leid\u017eia nustatyti did\u017eiausi\u0105 apkrov\u0105 ir pailg\u0117jim\u0105 iki l\u016b\u017eio, pateikiant standartizuotas vertes tiek neapsaugotoms geomembranoms, tiek toms, kurios turi apsauginius sluoksnius. Imituodamas galimus pradurimo scenarijus, \u0161is bandymas suteikia esmini\u0173 duomen\u0173 med\u017eiag\u0173 parinkimui ir gamini\u0173 sertifikavimui.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tempimo bandym\u0173 \u012franga ir bandymo s\u0105ranka<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Atliekant <strong>geomembranos piramid\u0117s pradurimo bandymas<\/strong> tam reikalinga tiksli \u012franga, \u012fskaitant suspaudimo pres\u0105 arba tempimo bandymo stakl\u0119, \u017eiedinius spaustukus, gr\u016bdint\u0105 piramid\u0117s formos st\u016bmokl\u012f ir elektrin\u0119 apkrovos nustatymo sistem\u0105. Bandinys \u012ftvirtinamas tarp vir\u0161utini\u0173 ir apatini\u0173 spaustuv\u0173, u\u017etikrinant, kad neb\u016bt\u0173 i\u0161ankstinio \u012ftempimo. Apkrovos st\u016bmoklis taiko j\u0117g\u0105 kontroliuojamu grei\u010diu, o tr\u016bkimo momentas u\u017eregistruojamas naudojant elektrin\u0119 nustatymo grandin\u0119. Paprastai naudojamos dvi pagrindin\u0117s med\u017eiagos:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vanduo:<\/strong> Imituoja nelanks\u010di\u0105 atram\u0105 ir perduoda elektrinius signalus, kad b\u016bt\u0173 galima aptikti prad\u016brim\u0105.<\/li>\n\n\n\n<li><strong>Aliuminio plok\u0161t\u0117:<\/strong> Tai tvirtas pagrindas, skirtas sud\u0117tingesn\u0117ms situacijoms, kai kyla pavojus, kad padanga gali b\u016bti pradurta.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Geomembranos atsparumo prad\u016brimui bandymo proced\u016bra<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Standarte ASTM D5494 apra\u0161yti du pagrindiniai bandymo metodai, priklausantys nuo naudojamos terp\u0117s:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Metodas su vandeniu kaip tirpalu:<\/strong> Bandomieji k\u016briniai tvirtai prispaud\u017eiami ir bandomi 50 mm\/min grei\u010diu, kol atsiranda pradurimas.<\/li>\n\n\n\n<li><strong>Aliuminio plok\u0161t\u0117s metodas:<\/strong> Bandiniai guli plok\u0161\u010diai, be fiksavimo, o pradurimo bandymas atliekamas l\u0117tesniu 10 mm\/min grei\u010diu.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Norint nustatyti vidutin\u012f atsparum\u0105 prad\u016brimui, rekomenduojama atlikti ne ma\u017eiau kaip de\u0161imt bandym\u0173 kiekvienoje terp\u0117je. Kartu atliekamas tempimo iki tr\u016bkimo matavimas suteikia papildomos informacijos apie med\u017eiagos savybes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geomembranos piramid\u0117s pradurimo bandymo reik\u0161m\u0117<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Svetain\u0117 <strong>geomembranos atsparumo prad\u016brimui bandymas<\/strong> tarnauja kaip med\u017eiagos kokyb\u0117s u\u017etikrinimo etalonas. Geomembranas naudojan\u010dios pramon\u0117s \u0161akos \u2013 \u012fskaitant atliek\u0173 tvarkym\u0105, vandens sulaikym\u0105, kasyb\u0105 ir statyb\u0105 \u2013 remiasi \u0161iais standartizuotais matavimais, siekdamos u\u017etikrinti ilgalaik\u012f patvarum\u0105. Apsaugini\u0173 neaustini\u0173 geotekstil\u0117s med\u017eiag\u0173 naudojimas gali \u017eymiai padidinti atsparum\u0105 prad\u016brimams, o \u0161is bandymas leid\u017eia kiekybi\u0161kai \u012fvertinti \u0161\u012f pager\u0117jim\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rekomenduojama \u012franga<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Siekiant u\u017etikrinti tiksl\u0173 ir veiksming\u0105 bandym\u0105, <strong>Cell Instruments TST-01 tempimo testeris<\/strong> yra idealus. Jo PLC valdoma sistema, reguliuojamas greitis (1\u2013500 mm\/min), suderinamumas su \u012fvairiais tvirtinimo \u012ftaisais ir kreiv\u0117s rodymas realiuoju laiku u\u017etikrina auk\u0161t\u0105 piramidini\u0173 pradurimo bandym\u0173 tikslum\u0105. Pasirenkama duomen\u0173 i\u0161vestis per mikrospausdintuv\u0105 arba RS-232 s\u0105saj\u0105 leid\u017eia skland\u017eiai integruoti \u012f kokyb\u0117s vadybos sistemas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Svarbiausi aspektai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u012esitikinkite, kad bandomajame m\u0117ginyje n\u0117ra rauk\u0161li\u0173 ar i\u0161ankstini\u0173 deformacij\u0173.<\/li>\n\n\n\n<li>U\u017etikrinkite pastov\u0173 testavimo greit\u012f pagal <a href=\"https:\/\/store.astm.org\/d5494-93r23.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D5494<\/a> techniniai duomenys.<\/li>\n\n\n\n<li>Tyrimus reikia pakartoti, siekiant atsi\u017evelgti \u012f med\u017eiag\u0173 partij\u0173 skirtumus.<\/li>\n\n\n\n<li>Siekiant visapusi\u0161kai \u012fvertinti eksploatacines savybes, u\u017efiksuokite tiek \u012fd\u016brio apkrov\u0105, tiek pailg\u0117jim\u0105 tr\u016bkimo metu.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">DUK<\/h2>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-1&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-1-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-1\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Koks yra ASTM D5494 bandymo tikslas?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-1\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-1-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u0160is metodas u\u017etikrina standartizuot\u0105 geomembran\u0173 atsparumo piramid\u0117s formos \u012fd\u016brimui matavim\u0105, padedant\u012f u\u017etikrinti kokyb\u0119 ir pasirinkti tinkamas med\u017eiagas.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-2&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-2-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-2\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Ar standartas ASTM D5494 gali b\u016bti taikomas geomembranoms su apsauginiais sluoksniais?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-2\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-2-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Taip, \u0161is bandymas leid\u017eia kiekybi\u0161kai \u012fvertinti atsparumo prad\u016brimui padid\u0117jim\u0105, kai naudojami neaustiniai geotekstiliniai audiniai.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-3&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-3-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-3\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Kokios pagrindin\u0117s laikmenos naudojamos bandyme?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-3\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-3-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Vanduo \u2013 lanks\u010diam modeliavimui, o aliuminis \u2013 tvirtam pagrindui.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-4&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-4-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-4\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Kiek m\u0117gini\u0173 reikia i\u0161tirti, kad b\u016bt\u0173 u\u017etikrintas patikimumas?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-4\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-4-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Ne ma\u017eiau kaip de\u0161imt m\u0117gini\u0173 i\u0161 kiekvienos pagrindin\u0117s terp\u0117s.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-5&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-5-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-5\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Kokioms pramon\u0117s \u0161akoms ASTM D5494 bandymai teikia did\u017eiausi\u0105 naud\u0105?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-5\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-5-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Statyba, atliek\u0173 tvarkymas, kasyba, vandens sulaikymas ir kiti sektoriai, kuriuose naudojamos geomembranos.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D5494 apibr\u0117\u017eia standartizuot\u0105 metod\u0105, skirt\u0105 neapsaugot\u0173 ir apsaugot\u0173 geomembran\u0173 atsparumui piramid\u0117s prad\u016brimui nustatyti. Juo \u012fvertinama did\u017eiausia apkrova ir pailg\u0117jimas ply\u0161imo metu naudojant piramid\u0117s formos st\u016bmokl\u012f ant vandens arba aliuminio pagrindo.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true},"standard-category":[56],"class_list":["post-1101","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.geo-tester.com\/lt\/wp-json\/wp\/v2\/standard\/1101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.geo-tester.com\/lt\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.geo-tester.com\/lt\/wp-json\/wp\/v2\/types\/standard"}],"wp:attachment":[{"href":"https:\/\/www.geo-tester.com\/lt\/wp-json\/wp\/v2\/media?parent=1101"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.geo-tester.com\/lt\/wp-json\/wp\/v2\/standard-category?post=1101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}