{"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\/vi\/standard\/astm-d5494\/","title":{"rendered":"ASTM D5494"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Hi\u1ec3u v\u1ec1 <strong>ASTM D5494<\/strong> Ti\u00eau chu\u1ea9n n\u00e0y c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a <strong>m\u00e0ng ch\u1ed1ng th\u1ea5m<\/strong>, d\u00f9 l\u00e0 lo\u1ea1i kh\u00f4ng c\u00f3 l\u1edbp b\u1ea3o v\u1ec7 hay \u0111\u01b0\u1ee3c gia c\u1ed1 b\u1eb1ng v\u1ea3i \u0111\u1ecba k\u1ef9 thu\u1eadt kh\u00f4ng d\u1ec7t. Ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt khi ch\u1ecbu \u1ee9ng su\u1ea5t \u0111\u00e2m th\u1ee7ng, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 an to\u00e0n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111a d\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng theo ph\u01b0\u01a1ng ph\u00e1p kim t\u1ef1 th\u00e1p \u0111\u1ed1i v\u1edbi m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ch\u1ec9 s\u1ed1 nh\u1eb1m \u0111o l\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed9t \u0111\u1ea7u \u0111\u00e2m b\u1eb1ng th\u00e9p c\u00f3 h\u00ecnh kim t\u1ef1 th\u00e1p. Quy tr\u00ecnh n\u00e0y x\u00e1c \u0111\u1ecbnh t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1ea1i \u0111i\u1ec3m \u0111\u1ee9t g\u00e3y, cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb ti\u00eau chu\u1ea9n cho c\u1ea3 m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt kh\u00f4ng c\u00f3 l\u1edbp b\u1ea3o v\u1ec7 l\u1eabn nh\u1eefng lo\u1ea1i c\u00f3 l\u1edbp b\u1ea3o v\u1ec7. B\u1eb1ng c\u00e1ch m\u00f4 ph\u1ecfng c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ee7ng ti\u1ec1m \u1ea9n, ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y cung c\u1ea5p d\u1eef li\u1ec7u thi\u1ebft y\u1ebfu cho vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 ch\u1ee9ng nh\u1eadn s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft b\u1ecb v\u00e0 quy tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ef1c hi\u1ec7n <strong>Th\u1eed nghi\u1ec7m \u0111\u00e2m th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p tr\u00ean m\u00e0ng ch\u1ed1ng th\u1ea5m<\/strong> Y\u00eau c\u1ea7u thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c, bao g\u1ed3m m\u00e1y \u00e9p n\u00e9n ho\u1eb7c m\u00e1y th\u1eed k\u00e9o, k\u1eb9p v\u00f2ng, piston h\u00ecnh kim t\u1ef1 th\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00f4i c\u1ee9ng v\u00e0 h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n t\u1ea3i \u0111i\u1ec7n. M\u1eabu th\u1eed \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa k\u1eb9p tr\u00ean v\u00e0 k\u1eb9p d\u01b0\u1edbi, \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 l\u1ef1c c\u0103ng ban \u0111\u1ea7u. Piston t\u1ea3i \u00e1p d\u1ee5ng l\u1ef1c v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, v\u00e0 th\u1eddi \u0111i\u1ec3m \u0111\u1ee9t g\u00e3y \u0111\u01b0\u1ee3c ghi l\u1ea1i b\u1eb1ng m\u1ea1ch ph\u00e1t hi\u1ec7n \u0111i\u1ec7n. Hai lo\u1ea1i m\u00f4i tr\u01b0\u1eddng c\u01a1 b\u1ea3n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u01b0\u1edbc:<\/strong> M\u00f4 ph\u1ecfng m\u1ed9t gi\u00e1 \u0111\u1ee1 kh\u00f4ng c\u1ee9ng v\u00e0 d\u1eabn truy\u1ec1n t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u1ebft th\u1ee7ng.<\/li>\n\n\n\n<li><strong>T\u1ea5m nh\u00f4m:<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 m\u1ed9t l\u1edbp n\u1ec1n c\u1ee9ng c\u00e1p d\u00e0nh cho c\u00e1c t\u00ecnh hu\u1ed1ng b\u1ecb th\u1ee7ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n cao h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Quy tr\u00ecnh th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D5494 n\u00eau ra hai ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ch\u00ednh d\u1ef1a tr\u00ean m\u00f4i tr\u01b0\u1eddng n\u1ec1n:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc:<\/strong> C\u00e1c m\u1eabu th\u1eed \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t v\u00e0 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m v\u1edbi t\u1ed1c \u0111\u1ed9 50 mm\/ph\u00fat cho \u0111\u1ebfn khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng th\u1ee7ng.<\/li>\n\n\n\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng t\u1ea5m nh\u00f4m:<\/strong> C\u00e1c m\u1eabu th\u1eed \u0111\u01b0\u1ee3c \u0111\u1eb7t n\u1eb1m ngang m\u00e0 kh\u00f4ng c\u1ea7n k\u1eb9p, v\u1edbi t\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m ch\u1eadm h\u01a1n l\u00e0 10 mm\/ph\u00fat \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u00e2m th\u1ee7ng.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n ch\u1ed1ng \u0111\u00e2m th\u1ee7ng trung b\u00ecnh, n\u00ean th\u1ef1c hi\u1ec7n \u00edt nh\u1ea5t m\u01b0\u1eddi l\u1ea7n th\u1eed nghi\u1ec7m cho m\u1ed7i lo\u1ea1i m\u00f4i tr\u01b0\u1eddng. Vi\u1ec7c \u0111o \u0111\u1ed3ng th\u1eddi \u0111\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t gi\u00fap cung c\u1ea5p th\u00eam th\u00f4ng tin v\u1ec1 t\u00ednh n\u0103ng c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a th\u1eed nghi\u1ec7m \u0111\u00e2m th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p \u0111\u1ed1i v\u1edbi m\u00e0ng ch\u1ed1ng th\u1ea5m<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>Th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt<\/strong> \u0111\u00f3ng vai tr\u00f2 l\u00e0 ti\u00eau chu\u1ea9n tham chi\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u. C\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1eed d\u1ee5ng m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt \u2014 bao g\u1ed3m qu\u1ea3n l\u00fd ch\u1ea5t th\u1ea3i, ch\u1ee9a n\u01b0\u1edbc, khai th\u00e1c m\u1ecf v\u00e0 x\u00e2y d\u1ef1ng \u2014 \u0111\u1ec1u d\u1ef1a v\u00e0o c\u00e1c ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i. Vi\u1ec7c s\u1eed d\u1ee5ng v\u1ea3i \u0111\u1ecba k\u1ef9 thu\u1eadt kh\u00f4ng d\u1ec7t c\u00f3 t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 n\u00e2ng cao \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng, v\u00e0 th\u1eed nghi\u1ec7m n\u00e0y gi\u00fap \u0111\u1ecbnh l\u01b0\u1ee3ng m\u1ee9c \u0111\u1ed9 c\u1ea3i thi\u1ec7n \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c ki\u1ec3m tra \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3, <strong>M\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n k\u00e9o Cell Instruments TST-01<\/strong> l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng. H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng PLC, t\u1ed1c \u0111\u1ed9 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (1\u2013500 mm\/ph\u00fat), kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u lo\u1ea1i khu\u00f4n k\u1eb9p v\u00e0 t\u00ednh n\u0103ng hi\u1ec3n th\u1ecb \u0111\u01b0\u1eddng cong theo th\u1eddi gian th\u1ef1c mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c cao cho c\u00e1c th\u1eed nghi\u1ec7m \u0111\u00e2m th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p. T\u00ednh n\u0103ng xu\u1ea5t d\u1eef li\u1ec7u t\u00f9y ch\u1ecdn qua m\u00e1y in si\u00eau nh\u1ecf ho\u1eb7c c\u1ed5ng RS-232 cho ph\u00e9p t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n l\u01b0u \u00fd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ea3m b\u1ea3o m\u1eabu th\u1eed kh\u00f4ng c\u00f3 n\u1ebfp nh\u0103n ho\u1eb7c bi\u1ebfn d\u1ea1ng tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n\n\n\n<li>Duy tr\u00ec t\u1ed1c \u0111\u1ed9 ki\u1ec3m th\u1eed \u1ed5n \u0111\u1ecbnh theo <a href=\"https:\/\/store.astm.org\/d5494-93r23.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D5494<\/a> th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/li>\n\n\n\n<li>Ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m l\u1ea1i \u0111\u1ec3 t\u00ednh \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng gi\u1eefa c\u00e1c l\u00f4 nguy\u00ean li\u1ec7u.<\/li>\n\n\n\n<li>Ghi nh\u1eadn c\u1ea3 t\u1ea3i tr\u1ecdng \u0111\u00e2m th\u1ee7ng v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n hi\u1ec7u su\u1ea5t.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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\">M\u1ee5c \u0111\u00edch c\u1ee7a th\u1eed nghi\u1ec7m ASTM D5494 l\u00e0 g\u00ec?<\/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\">Ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng ti\u00eau chu\u1ea9n v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p cho m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt, l\u00e0m c\u01a1 s\u1edf h\u01b0\u1edbng d\u1eabn cho c\u00f4ng t\u00e1c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u.<\/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\">Ti\u00eau chu\u1ea9n ASTM D5494 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 l\u1edbp b\u1ea3o v\u1ec7 kh\u00f4ng?<\/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\">\u0110\u00fang v\u1eady, th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1ecbnh l\u01b0\u1ee3ng m\u1ee9c \u0111\u1ed9 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng khi s\u1eed d\u1ee5ng v\u1ea3i \u0111\u1ecba k\u1ef9 thu\u1eadt kh\u00f4ng d\u1ec7t.<\/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\">Trong b\u00e0i ki\u1ec3m tra n\u00e0y s\u1eed d\u1ee5ng nh\u1eefng lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n c\u01a1 b\u1ea3n n\u00e0o?<\/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\">S\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng cho m\u00f4 ph\u1ecfng kh\u00f4ng c\u1ee9ng v\u00e0 nh\u00f4m cho l\u1edbp n\u1ec1n c\u1ee9ng.<\/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\">C\u1ea7n ph\u1ea3i ki\u1ec3m tra bao nhi\u00eau m\u1eabu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady?<\/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\">\u00cdt nh\u1ea5t m\u01b0\u1eddi m\u1eabu tr\u00ean m\u1ed7i m\u00f4i tr\u01b0\u1eddng n\u1ec1n.<\/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\">Nh\u1eefng ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0o \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i nhi\u1ec1u nh\u1ea5t t\u1eeb vi\u1ec7c th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D5494?<\/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\">X\u00e2y d\u1ef1ng, qu\u1ea3n l\u00fd ch\u1ea5t th\u1ea3i, khai th\u00e1c m\u1ecf, ch\u1ee9a n\u01b0\u1edbc v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c s\u1eed d\u1ee5ng m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Ti\u00eau chu\u1ea9n ASTM D5494 quy \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u00e2m th\u1ee7ng h\u00ecnh kim t\u1ef1 th\u00e1p c\u1ee7a c\u00e1c lo\u1ea1i m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e1nh gi\u00e1 t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1ea1i \u0111i\u1ec3m \u0111\u1ee9t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t piston h\u00ecnh kim t\u1ef1 th\u00e1p \u0111\u1eb7t tr\u00ean n\u1ec1n n\u01b0\u1edbc ho\u1eb7c n\u1ec1n nh\u00f4m.<\/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\/vi\/wp-json\/wp\/v2\/standard\/1101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/types\/standard"}],"wp:attachment":[{"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/media?parent=1101"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/standard-category?post=1101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}