{"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\/vi\/standard\/astm-d5994\/","title":{"rendered":"ASTM D5994"},"content":{"rendered":"<p class=\"wp-block-paragraph\">M\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t nh\u00e1m \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong c\u00e1c l\u1edbp l\u00f3t b\u00e3i ch\u00f4n l\u1ea5p, h\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n ch\u1ea5t th\u1ea3i khai th\u00e1c m\u1ecf, ao, k\u00eanh m\u01b0\u01a1ng, h\u1ed3 ch\u1ee9a v\u00e0 c\u00e1c d\u1ef1 \u00e1n b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Do c\u00e1c v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng c\u00f3 c\u00e1c g\u1edd nh\u00f4 l\u00ean, ph\u1ea7n nh\u00f4 ra ho\u1eb7c c\u00e1c v\u1ebft l\u00f5m tr\u00ean b\u1ec1 m\u1eb7t, vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111o \u0111\u1ed9 d\u00e0y truy\u1ec1n th\u1ed1ng (d\u00f9ng \u0111\u1ebf ph\u1eb3ng) c\u00f3 th\u1ec3 kh\u00f4ng mang l\u1ea1i d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady. Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p chuy\u00ean d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y l\u00f5i c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t nh\u00e1m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D5994 t\u1eadp trung v\u00e0o \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u \u201ct\u1eeb r\u00e3nh n\u00e0y \u0111\u1ebfn r\u00e3nh kia\u201d thay v\u00ec chi\u1ec1u cao t\u1ed5ng th\u1ec3 c\u1ee7a b\u1ec1 m\u1eb7t c\u00f3 k\u1ebft c\u1ea5u. Gi\u00e1 tr\u1ecb n\u00e0y gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t, ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 nh\u00e2n vi\u00ean ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1nh gi\u00e1 t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c \u0111\u1ecba c\u00f3 y\u00eau c\u1ea7u kh\u1eaft khe.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n ASTM D5994 v\u00e0 Th\u1eed nghi\u1ec7m \u0111\u1ed9 d\u00e0y l\u00f5i c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t nh\u00e1m<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y l\u00f5i c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t nh\u00e1m b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 d\u00e0y tr\u1ecdng l\u1ef1c v\u1edbi c\u00e1c \u0111i\u1ec3m \u0111o \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u00e1p d\u1ee5ng m\u1ed9t l\u1ef1c quy \u0111\u1ecbnh l\u00e0 0,56 \u00b1 0,05 N \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 nh\u1ea5t qu\u00e1n v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt ph\u1eb3ng, ti\u00eau chu\u1ea9n ASTM D5994 y\u00eau c\u1ea7u c\u00e1c \u0111\u1ea7u \u0111o ph\u1ea3i n\u1eb1m trong c\u00e1c khe r\u00e3nh gi\u1eefa c\u00e1c ph\u1ea7n nh\u00f4 l\u00ean tr\u00ean b\u1ec1 m\u1eb7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111o \u0111\u1ed9 d\u00e0y th\u1ef1c t\u1ebf \u1edf ph\u1ea7n \u0111\u00e1y c\u1ee7a t\u1ea5m m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt thay v\u00ec chi\u1ec1u cao c\u1ee7a k\u1ebft c\u1ea5u b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n n\u00e0y \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t nh\u00e1m m\u1ed9t m\u1eb7t v\u00e0 hai m\u1eb7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u1ec7 th\u1ed1ng l\u1edbp l\u00f3t b\u00e3i ch\u00f4n l\u1ea5p<\/li>\n\n\n\n<li>C\u00e1c b\u00e3i khai th\u00e1c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u00e2m r\u1eeda \u0111\u1ed1ng<\/li>\n\n\n\n<li>H\u1ed3 ch\u1ee9a n\u01b0\u1edbc th\u1ea3i<\/li>\n\n\n\n<li>L\u1edbp l\u00f3t h\u1ed3 ch\u1ee9a<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n th\u1ee9 c\u1ea5p<\/li>\n\n\n\n<li>C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a r\u00e0o c\u1ea3n m\u00f4i tr\u01b0\u1eddng<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed9 d\u00e0y l\u00f5i l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 k\u1ebft c\u1ea5u, b\u1edfi v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n k\u00e9o, kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng, t\u00ednh ch\u1ea5t khu\u1ebfch t\u00e1n v\u00e0 \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quy tr\u00ecnh \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh m\u1ed9t quy tr\u00ecnh \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt chi ti\u1ebft nh\u1eb1m gi\u1ea3m thi\u1ec3u s\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chu\u1ea9n b\u1ecb m\u1eabu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1eed nghi\u1ec7m n\u00e0y y\u00eau c\u1ea7u l\u1ea5y c\u00e1c m\u1eabu \u0111\u1ea1i di\u1ec7n tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u r\u1ed9ng c\u1ee7a cu\u1ed9n m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt. Vi\u1ec7c l\u1ea5y m\u1eabu c\u1ea7n bao g\u1ed3m c\u00e1c v\u1ecb tr\u00ed g\u1ea7n c\u1ea3 hai m\u00e9p cu\u1ed9n v\u00ec \u0111\u1ed9 d\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i d\u1ecdc theo t\u1ea5m m\u00e0ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec1u s\u1eed d\u1ee5ng m\u1eabu th\u1eed h\u00ecnh tr\u00f2n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh kho\u1ea3ng 75 mm. M\u1eabu th\u1eed ph\u1ea3i nh\u00f4 ra \u00edt nh\u1ea5t 10 mm so v\u1edbi c\u00e1c \u0111i\u1ec3m \u0111\u1ecbnh v\u1ecb theo m\u1ecdi h\u01b0\u1edbng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m, c\u00e1c m\u1eabu th\u1eed ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nh\u01b0 sau:<\/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 % \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Quy tr\u00ecnh \u0111o l\u01b0\u1eddng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi v\u1eadn h\u00e0nh tr\u01b0\u1edbc ti\u00ean ph\u1ea3i \u0111\u1eb7t l\u1ea1i v\u1ec1 0 \u0111\u1ed3ng h\u1ed3 \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt khi kh\u00f4ng c\u00f3 m\u1eabu th\u1eed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau \u0111\u00f3, m\u1eabu th\u1eed \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai \u0111i\u1ec3m \u0111o \u0111\u1ed1i di\u1ec7n nhau. \u0110i\u1ec3m \u0111o ph\u00eda tr\u00ean n\u00ean ti\u1ebfp x\u00fac v\u1edbi c\u00e1c \u0111i\u1ec3m th\u1ea5p ho\u1eb7c c\u00e1c r\u00e3nh c\u1ee7a b\u1ec1 m\u1eb7t c\u00f3 k\u1ebft c\u1ea5u, ch\u1ee9 kh\u00f4ng ph\u1ea3i v\u1edbi \u0111\u1ec9nh c\u1ee7a c\u00e1c ph\u1ea7n nh\u00f4 l\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7n th\u1ef1c hi\u1ec7n ba l\u1ea7n \u0111o cho m\u1ed7i m\u1eabu th\u1eed. Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n ph\u1ea3i ghi l\u1ea1i gi\u00e1 tr\u1ecb th\u1ea5p nh\u1ea5t l\u00e0m \u0111\u1ed9 d\u00e0y c\u1ee7a m\u1eabu th\u1eed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi t\u00e1c d\u1ee5ng t\u1ea3i tr\u1ecdng t\u0129nh t\u1ed1i \u0111a trong 5 gi\u00e2y, ng\u01b0\u1eddi v\u1eadn h\u00e0nh ghi l\u1ea1i gi\u00e1 tr\u1ecb \u0111\u1ed9 d\u00e0y cu\u1ed1i c\u00f9ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ebfn 0,025 mm ho\u1eb7c 0,001 in.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap gi\u1ea3m nguy c\u01a1 \u0111\u00e1nh gi\u00e1 qu\u00e1 cao \u0111\u1ed9 d\u00e0y do b\u1ec1 m\u1eb7t c\u00f3 k\u1ebft c\u1ea5u n\u1ed5i.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng ch\u1ed1ng th\u1ea5m<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n ASTM D5994.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh r\u1eb1ng thi\u1ebft b\u1ecb ph\u1ea3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng c\u01a1 ch\u1ebf t\u1ea3i tr\u1ecdng t\u0129nh<\/li>\n\n\n\n<li>\u0110o \u0111\u1ed9 d\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u00edt nh\u1ea5t l\u00e0 \u00b10,01 mm<\/li>\n\n\n\n<li>T\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c c\u00f3 gi\u00e1 tr\u1ecb 0,56 \u00b1 0,05 N<\/li>\n\n\n\n<li>Bao g\u1ed3m c\u00e1c \u0111i\u1ec3m \u0111o tr\u00ean v\u00e0 d\u01b0\u1edbi \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh<\/li>\n\n\n\n<li>Gi\u1eef cho chuy\u1ec3n \u0111\u1ed9ng d\u1ecdc di\u1ec5n ra tr\u01a1n tru trong qu\u00e1 tr\u00ecnh \u0111o<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c \u0111i\u1ec3m \u0111o ph\u1ea3i c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K\u1ebft c\u1ea5u b\u1eb1ng th\u00e9p t\u00f4i c\u1ee9ng<\/li>\n\n\n\n<li>H\u00ecnh h\u1ecdc thu\u00f4n nh\u1ecdn 60 \u00b1 2\u00b0<\/li>\n\n\n\n<li>B\u00e1n k\u00ednh \u0111\u1ea7u tr\u00f2n l\u00e0 0,8 \u00b1 0,1 mm<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec vi\u1ec7c s\u1eed d\u1ee5ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i c\u00f3 th\u1ec3 l\u00e0m m\u00f2n c\u00e1c \u0111\u1ea7u \u0111o ho\u1eb7c g\u00e2y l\u1ec7ch v\u1ecb tr\u00ed, n\u00ean vi\u1ec7c hi\u1ec7u chu\u1ea9n \u0111\u1ecbnh k\u1ef3 b\u1eb1ng c\u00e1c kh\u1ed1i \u0111\u1ed9 d\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u00ecnh d\u1ea1ng \u0111i\u1ec3m \u0111o kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 l\u1eb7p l\u1ea1i k\u00e9m.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho ti\u00eau chu\u1ea9n ASTM D5994<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cell Instruments c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c h\u1ec7 th\u1ed1ng \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh d\u00e0nh cho th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D5994. M\u00e1y \u0111o \u0111\u1ed9 d\u00e0y b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh chuy\u00ean d\u1ee5ng, \u0111\u01b0\u1ee3c trang b\u1ecb c\u00e1c \u0111i\u1ec3m \u0111o ch\u00ednh x\u00e1c, gi\u00fap c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c k\u1ebft qu\u1ea3 \u0111o \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FTT-01 mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m trong vi\u1ec7c \u0111o \u0111\u1ed9 d\u00e0y m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PLC k\u1ebft h\u1ee3p v\u1edbi m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng HMI \u0111\u1ec3 v\u1eadn h\u00e0nh tr\u1ef1c quan<\/li>\n\n\n\n<li>C\u00e1c t\u00f9y ch\u1ecdn ki\u1ec3m tra c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng linh ho\u1ea1t<\/li>\n\n\n\n<li>T\u1ef1 \u0111\u1ed9ng n\u00e2ng ch\u00e2n \u00e9p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u h\u01b0 h\u1ecfng m\u1eabu v\u00e0 n\u00e2ng cao \u0111\u1ed9 l\u1eb7p l\u1ea1i<\/li>\n\n\n\n<li>Hi\u1ec3n th\u1ecb s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea theo th\u1eddi gian th\u1ef1c, bao g\u1ed3m c\u00e1c gi\u00e1 tr\u1ecb t\u1ed1i \u0111a, t\u1ed1i thi\u1ec3u, trung b\u00ecnh v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n<\/li>\n\n\n\n<li>T\u00f9y ch\u1ecdn m\u00e1y in si\u00eau nh\u1ecf v\u00e0 giao ti\u1ebfp RS-232 \u0111\u1ec3 xu\u1ea5t d\u1eef li\u1ec7u c\u00f3 th\u1ec3 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng n\u1ea1p m\u1eabu th\u1ee7 c\u00f4ng ho\u1eb7c t\u1ef1 \u0111\u1ed9ng (t\u00f9y ch\u1ecdn) d\u00e0nh cho c\u00e1c th\u1eed nghi\u1ec7m quy m\u00f4 l\u1edbn<\/li>\n\n\n\n<li>\u0110\u1ed9 ph\u00e2n gi\u1ea3i cao 0,1 \u03bcm \u0111\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng bi\u1ebfn \u0111\u1ed5i \u0111\u1ed9 d\u00e0y r\u1ea5t nh\u1ecf<\/li>\n\n\n\n<li>Ph\u1ea1m vi ki\u1ec3m tra c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh, v\u01b0\u1ee3t ra ngo\u00e0i c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n t\u1eeb 0 \u0111\u1ebfn 2 mm<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00e1y \u0111o \u0111\u1ed9 d\u00e0y c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao, v\u1edbi kh\u1ea3 n\u0103ng t\u1ea3i \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ecbnh v\u1ecb l\u1eb7p l\u1ea1i ch\u00ednh x\u00e1c, l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c theo ti\u00eau chu\u1ea9n ASTM D5994.<\/strong><\/p>\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\">Ti\u00eau chu\u1ea9n ASTM D5994 \u0111o l\u01b0\u1eddng \u0111i\u1ec1u 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 ASTM D5994 d\u00f9ng \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0y l\u00f5i c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1 b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u gi\u1eefa c\u00e1c r\u00e3nh tr\u00ean b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1 \u0111\u00f3.<\/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\">T\u1ea1i sao ti\u00eau chu\u1ea9n ASTM D5994 l\u1ea1i kh\u00e1c v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n?<\/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\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n b\u1eb1ng \u0111\u1ebf ph\u1eb3ng c\u00f3 th\u1ec3 \u0111o chi\u1ec1u cao c\u1ee7a c\u00e1c g\u1edd nh\u00e1m tr\u00ean b\u1ec1 m\u1eb7t. Ti\u00eau chu\u1ea9n ASTM D5994 \u0111o c\u1ee5 th\u1ec3 \u0111\u1ed9 d\u00e0y l\u00f5i b\u00ean d\u01b0\u1edbi \u0111\u01b0\u1eddng vi\u1ec1n k\u1ebft c\u1ea5u.<\/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\">T\u1ea1i sao ti\u00eau chu\u1ea9n ASTM D5994 l\u1ea1i y\u00eau c\u1ea7u th\u1ef1c hi\u1ec7n ba l\u1ea7n \u0111o cho m\u1ed7i m\u1eabu th\u1eed?<\/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\">B\u1ec1 m\u1eb7t c\u00f3 k\u1ebft c\u1ea5u c\u00f3 th\u1ec3 kh\u00e1c nhau tr\u00ean c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau c\u1ee7a m\u1eabu th\u1eed. Vi\u1ec7c th\u1ef1c hi\u1ec7n ba l\u1ea7n \u0111o s\u1ebd gi\u00fap n\u00e2ng cao \u0111\u1ed9 l\u1eb7p l\u1ea1i v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u th\u1ef1c s\u1ef1.<\/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\">L\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D5994 l\u00e0 bao nhi\u00eau?<\/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\">Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh ph\u1ea3i t\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c 0,56 \u00b1 0,05 N th\u00f4ng qua thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 d\u00e0y b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh.<\/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\">T\u1ea1i sao l\u1ea1i ghi nh\u1eadn \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb th\u1ea5p nh\u1ea5t?<\/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\">Gi\u00e1 tr\u1ecb \u0111o th\u1ea5p nh\u1ea5t ph\u1ea3n \u00e1nh \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u c\u1ee5c b\u1ed9 t\u1ea1i c\u00e1c r\u00e3nh c\u00f3 k\u1ebft c\u1ea5u, v\u00e0 \u0111\u00e2y ch\u00ednh l\u00e0 \u0111\u1ed9 d\u00e0y th\u1ef1c t\u1ebf c\u1ee7a l\u00f5i m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt.<\/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\">Nh\u1eefng ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0o th\u01b0\u1eddng s\u1eed d\u1ee5ng ti\u00eau chu\u1ea9n 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 class=\"wp-block-paragraph\">C\u00e1c ng\u00e0nh nh\u01b0 k\u1ef9 thu\u1eadt m\u00f4i tr\u01b0\u1eddng, x\u00e2y d\u1ef1ng b\u00e3i ch\u00f4n l\u1ea5p, khai th\u00e1c m\u1ecf, qu\u1ea3n l\u00fd n\u01b0\u1edbc v\u00e0 s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u \u0111\u1ecba k\u1ef9 thu\u1eadt th\u01b0\u1eddng s\u1eed d\u1ee5ng <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 class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Ti\u00eau chu\u1ea9n ASTM D5994 quy \u0111\u1ecbnh m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0y l\u00f5i c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 d\u00e0y ki\u1ec3u tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh c\u00f3 h\u00ecnh d\u1ea1ng \u0111\u1ea7u d\u00f2 v\u00e0 l\u1ef1c t\u00e1c \u0111\u1ed9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1eadp trung v\u00e0o \u0111\u1ed9 d\u00e0y gi\u1eefa c\u00e1c r\u00e3nh thay v\u00ec chi\u1ec1u cao c\u1ee7a b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1.<\/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\/vi\/wp-json\/wp\/v2\/standard\/1103","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=1103"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/standard-category?post=1103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}