{"id":1103,"date":"2026-04-03T03:57:39","date_gmt":"2026-04-03T03:57:39","guid":{"rendered":"https:\/\/www.geo-tester.com\/?post_type=standard&#038;p=1103"},"modified":"2026-04-08T06:00:31","modified_gmt":"2026-04-08T06:00:31","slug":"astm-d5994","status":"publish","type":"standard","link":"https:\/\/www.geo-tester.com\/sl\/standard\/astm-d5994\/","title":{"rendered":"ASTM D5994"},"content":{"rendered":"<p>Teksturirane geomembrane imajo pomembno vlogo pri oblogah za odlagali\u0161\u010da, rudarskih zadr\u017eevalnih sistemih, ribnikih, kanalih, rezervoarjih in projektih varstva okolja. Ker ti materiali pogosto vsebujejo dvignjene ploskve, izbokline ali povr\u0161inske vdolbine, merjenje debeline z obi\u010dajno metodo merjenja debeline s plosko nogo morda ne bo zagotovilo zanesljivih podatkov. ASTM D5994 dolo\u010da posebno metodo za dolo\u010danje debeline jedra teksturiranih geomembran.<\/p>\n\n\n\n<p>Standard ASTM D5994 se osredoto\u010da na najmanj\u0161o debelino \u201cod doline do doline\u201d in ne na celotno vi\u0161ino teksturirane povr\u0161ine. Ta vrednost pomaga proizvajalcem, laboratorijem in osebju za nadzor kakovosti oceniti skladnost izdelka in predvideti delovanje geomembran pri zahtevnih aplikacijah na terenu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D5994 in test debeline jedra teksturiranih geomembran<\/h2>\n\n\n\n<p>Standard ASTM D5994 zajema dolo\u010danje debeline jedra teksturiranih geomembran z uporabo merilnika debeline s posebno oblikovanimi merskimi to\u010dkami. Metoda uporablja dolo\u010deno silo 0,56 \u00b1 0,05 N za zagotovitev doslednih in ponovljivih rezultatov.<\/p>\n\n\n\n<p>Za razliko od metod za dolo\u010danje debeline ravnih geomembran je pri standardu ASTM D5994 treba merilne konice namestiti v vdolbine med povr\u0161inskimi izboklinami. Ta pristop meri pravo osnovno debelino geomembranske plo\u0161\u010de in ne vi\u0161ino teksture.<\/p>\n\n\n\n<p>Standard velja za enostranske in dvostranske teksturirane geomembrane, ki se obi\u010dajno uporabljajo v:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sistemi oblog za odlagali\u0161\u010da<\/li>\n\n\n\n<li>Rudarske blazinice za izpiranje na kupu<\/li>\n\n\n\n<li>lagune za odpadne vode<\/li>\n\n\n\n<li>Obloge rezervoarja<\/li>\n\n\n\n<li>Sekundarni zadr\u017eevalni sistemi<\/li>\n\n\n\n<li>Uporaba okoljskih pregrad<\/li>\n<\/ul>\n\n\n\n<p><strong>Debelina jedra je ena najpomembnej\u0161ih indeksnih lastnosti teksturiranih geomembran, saj neposredno vpliva na natezno trdnost, odpornost proti prebadanju, difuzijsko obna\u0161anje in dolgoro\u010dno trajnost.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Postopek merjenja debeline geomembran<\/h2>\n\n\n\n<p>ASTM D5994 dolo\u010da podroben postopek merjenja debeline geomembran, da se zmanj\u0161ajo razlike med laboratoriji.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Priprava vzorca<\/h3>\n\n\n\n<p>Pri preskusu so potrebni reprezentativni vzorci, odvzeti po celotni \u0161irini zvitka geomembrane. Vzor\u010denje mora vklju\u010devati mesta blizu obeh robov zvitka, saj se lahko debelina po celotni foliji spreminja.<\/p>\n\n\n\n<p>Ve\u010dina laboratorijev uporablja okrogle vzorce s premerom pribli\u017eno 75 mm. Vzorec mora segati vsaj 10 mm \u010dez merilne to\u010dke v vseh smereh.<\/p>\n\n\n\n<p>Pred testiranjem morajo vzorci ostati v nadzorovani atmosferi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>21 \u00b1 2 \u00b0C<\/li>\n\n\n\n<li>60 \u00b1 10 % relativna vla\u017enost<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Postopek merjenja<\/h3>\n\n\n\n<p>Operater najprej izni\u010di merilnik debeline geomembran brez prisotnega vzorca.<\/p>\n\n\n\n<p>Vzorec se nato namesti med nasprotni merilni to\u010dki. Zgornja merilna to\u010dka se mora dotakniti nizkih to\u010dk ali dolin na teksturirani povr\u0161ini in ne vrhov izboklin.<\/p>\n\n\n\n<p>Za vsak vzorec je treba opraviti tri meritve. ASTM D5994 zahteva, da izvajalec zabele\u017ei najni\u017ejo vrednost kot debelino vzorca.<\/p>\n\n\n\n<p>Po 5-sekundni uporabi polne obremenitve z lastno te\u017eo operater zabele\u017ei kon\u010dno vrednost debeline z natan\u010dnostjo 0,025 mm ali 0,001 in\u010da.<\/p>\n\n\n\n<p><strong>Ta metoda zmanj\u0161uje tveganje precenjevanja debeline zaradi dvignjenega profila teksture.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zahteve za merilnik debeline geomembran<\/h2>\n\n\n\n<p>Ustrezen merilnik debeline geomembran je klju\u010dnega pomena za skladnost z ASTM D5994.<\/p>\n\n\n\n<p>Standard dolo\u010da, da mora instrument:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Uporabite mehanizem za nalaganje mrtve te\u017ee<\/li>\n\n\n\n<li>Merjenje debeline z natan\u010dnostjo najmanj \u00b10,01 mm<\/li>\n\n\n\n<li>uporabi silo 0,56 \u00b1 0,05 N<\/li>\n\n\n\n<li>Vklju\u010dujejo poravnane zgornje in spodnje merilne to\u010dke<\/li>\n\n\n\n<li>Med merjenjem ohranjajte gladko navpi\u010dno gibanje.<\/li>\n<\/ul>\n\n\n\n<p>Merilne to\u010dke morajo biti opremljene z naslednjimi elementi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Konstrukcija iz kaljenega jekla<\/li>\n\n\n\n<li>60 \u00b1 2\u00b0 sto\u017e\u010dasta geometrija<\/li>\n\n\n\n<li>Polmer zaobljene konice 0,8 \u00b1 0,1 mm<\/li>\n<\/ul>\n\n\n\n<p>Ker lahko ponavljajo\u010da se uporaba zbri\u0161e konice ali povzro\u010di nepravilno nastavitev, je rutinsko umerjanje s certificiranimi bloki za merjenje debeline nujno.<\/p>\n\n\n\n<p><strong>Nepravilna geometrija merilne to\u010dke lahko privede do neto\u010dnih rezultatov in slabe ponovljivosti.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Priporo\u010dena oprema za presku\u0161anje po standardu ASTM D5994<\/h2>\n\n\n\n<p>Cell Instruments lahko zagotovi prilagojene sisteme za merjenje debeline geomembran za testiranje po standardu ASTM D5994. Namenski tester za merjenje debeline z mrtvo te\u017eo z natan\u010dnimi merskimi to\u010dkami pomaga laboratorijem dose\u010di stabilne in ponovljive meritve.<\/p>\n\n\n\n<p>FTT-01 ima pri merjenju debeline geomembran ve\u010d prednosti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PLC + zaslon na dotik HMI za intuitivno upravljanje<\/li>\n\n\n\n<li>Programirljive mo\u017enosti testiranja za prilagodljive postopke nadzora kakovosti<\/li>\n\n\n\n<li>Samodejni dvig noge stiskalnika za zmanj\u0161anje po\u0161kodb vzorcev in izbolj\u0161anje ponovljivosti<\/li>\n\n\n\n<li>Prikaz statisti\u010dnih podatkov v realnem \u010dasu, vklju\u010dno z najve\u010djo, najmanj\u0161o, povpre\u010dno vrednostjo in standardnim odklonom<\/li>\n\n\n\n<li>Opcijski mikrotiskalnik in komunikacija RS-232 za izhod podatkov, ki jih je mogo\u010de slediti<\/li>\n\n\n\n<li>Izbirni ro\u010dni ali samodejni sistemi za hranjenje za testiranje velikih koli\u010din<\/li>\n\n\n\n<li>Visoka lo\u010dljivost 0,1 \u03bcm za zaznavanje subtilnih sprememb debeline<\/li>\n\n\n\n<li>Prilagodljivo preskusno obmo\u010dje, ki presega standardno konfiguracijo od 0 do 2 mm<\/li>\n<\/ul>\n\n\n\n<p><strong>Za pridobitev natan\u010dnih rezultatov po standardu ASTM D5994 je bistvenega pomena tester za merjenje debeline z visoko lo\u010dljivostjo, stabilno obremenitvijo in ponovljivim pozicioniranjem.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pogosta vpra\u0161anja<\/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\">Kaj meri standard ASTM D5994?<\/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>ASTM D5994 meri debelino jedra teksturiranih geomembran z dolo\u010ditvijo najmanj\u0161e debeline med dolinami teksturirane povr\u0161ine.<\/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\">Zakaj se standard ASTM D5994 razlikuje od standardnih metod za dolo\u010danje debeline?<\/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>S standardnimi metodami za merjenje debeline ploskve se lahko izmeri vi\u0161ina povr\u0161inskih asperzij. Standard ASTM D5994 posebej meri debelino jedra pod profilom teksture.<\/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\">Zakaj standard ASTM D5994 zahteva tri meritve na vzorec?<\/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>Teksturirana povr\u0161ina se lahko razlikuje po vzorcu. Izvedba treh meritev izbolj\u0161a ponovljivost in pomaga dolo\u010diti pravo najmanj\u0161o debelino.<\/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\">Kak\u0161na je potrebna sila za testiranje po standardu ASTM D5994?<\/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>ASTM D5994 dolo\u010da silo 0,56 \u00b1 0,05 N, ki deluje skozi merilnik debeline z lastno te\u017eo.<\/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\">Zakaj je zabele\u017een najni\u017eji od\u010ditek?<\/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>Najni\u017eji od\u010ditek odra\u017ea lokalno najmanj\u0161o debelino v teksturiranih dolinah, ki predstavlja pravo debelino jedra geomembrane.<\/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-6&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-6-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-6\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">V katerih panogah se obi\u010dajno uporablja standard ASTM D5994?<\/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-6\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-6-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>V panogah, kot so okoljski in\u017eeniring, gradnja odlagali\u0161\u010d, rudarstvo, upravljanje voda in proizvodnja geosintetikov, se pogosto uporabljajo <a href=\"https:\/\/store.astm.org\/d5994_d5994m-10r21.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D5994<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Standard ASTM D5994 dolo\u010da standardizirano metodo za merjenje debeline jedra teksturiranih geomembran z uporabo merilnika debeline z dolo\u010deno geometrijo konice in obremenilno silo. Metoda se osredoto\u010da na debelino od doline do doline in ne na vi\u0161ino teksture povr\u0161ine.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true},"standard-category":[56],"class_list":["post-1103","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.geo-tester.com\/sl\/wp-json\/wp\/v2\/standard\/1103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.geo-tester.com\/sl\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.geo-tester.com\/sl\/wp-json\/wp\/v2\/types\/standard"}],"wp:attachment":[{"href":"https:\/\/www.geo-tester.com\/sl\/wp-json\/wp\/v2\/media?parent=1103"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.geo-tester.com\/sl\/wp-json\/wp\/v2\/standard-category?post=1103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}