{"id":1098,"date":"2026-04-01T08:57:28","date_gmt":"2026-04-01T08:57:28","guid":{"rendered":"https:\/\/www.geo-tester.com\/?post_type=standard&#038;p=1098"},"modified":"2026-04-08T05:59:28","modified_gmt":"2026-04-08T05:59:28","slug":"astm-d4833","status":"publish","type":"standard","link":"https:\/\/www.geo-tester.com\/vi\/standard\/astm-d4833\/","title":{"rendered":"ASTM D4833"},"content":{"rendered":"<p class=\"wp-block-paragraph\">M\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng ng\u0103n ch\u1ee9a, l\u1edbp l\u00f3t b\u00e3i ch\u00f4n l\u1ea5p, ao ch\u1ee9a khai th\u00e1c m\u1ecf, k\u00eanh m\u01b0\u01a1ng, h\u1ed3 ch\u1ee9a v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh ch\u1ed1ng th\u1ea5m. Trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y, h\u01b0 h\u1ecfng do th\u1ee7ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9, l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng v\u00e0 g\u00e2y ra chi ph\u00ed s\u1eeda ch\u1eefa \u0111\u1eaft \u0111\u1ecf. Ti\u00eau chu\u1ea9n ASTM D4833 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 c\u00e1c v\u1eadt li\u1ec7u li\u00ean quan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D4833 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t, ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m \u0111\u1ecbnh v\u00e0 c\u00e1c \u0111\u1ed9i ng\u0169 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i v\u00ec ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p m\u1ed9t gi\u00e1 tr\u1ecb ch\u1ec9 s\u1ed1 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i \u0111\u1ec3 so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t kh\u00e1c nhau. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 m\u00e0 m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i s\u1ef1 xuy\u00ean th\u1ee7ng do t\u1ea3i tr\u1ecdng t\u1eadp trung t\u00e1c \u0111\u1ed9ng b\u1edfi m\u1ed9t thanh th\u00e9p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ed5ng quan v\u1ec1 ti\u00eau chu\u1ea9n ASTM D4833<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D4833, \u201cPh\u01b0\u01a1ng ph\u00e1p th\u1eed ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ec9 s\u1ed1 ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m li\u00ean quan\u201d, \u0111o l\u01b0\u1eddng l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u00e0m th\u1ee7ng m\u1ed9t m\u1eabu th\u1eed trong \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, ng\u01b0\u1eddi v\u1eadn h\u00e0nh k\u1eb9p m\u1eabu th\u1eed gi\u1eefa hai t\u1ea5m tr\u00f2n m\u00e0 kh\u00f4ng t\u1ea1o l\u1ef1c k\u00e9o. Sau \u0111\u00f3, m\u1ed9t thanh th\u00e9p r\u1eafn s\u1ebd \u0111\u00e8 l\u00ean v\u00f9ng trung t\u00e2m kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ee1 c\u1ee7a m\u1eabu th\u1eed cho \u0111\u1ebfn khi m\u1eabu b\u1ecb \u0111\u1ee9t. L\u1ef1c t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ghi nh\u1eadn trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m ch\u00ednh l\u00e0 gi\u00e1 tr\u1ecb kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u00e2m th\u1ee7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec ti\u00eau chu\u1ea9n ASTM D4833 \u0111\u01b0a ra m\u1ed9t gi\u00e1 tr\u1ecb ch\u1ec9 s\u1ed1 thay v\u00ec m\u00f4 ph\u1ecfng hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf, n\u00ean ti\u00eau chu\u1ea9n n\u00e0y ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>So s\u00e1nh v\u1eadt li\u1ec7u<\/li>\n\n\n\n<li>Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng nh\u1eadp<\/li>\n\n\n\n<li>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t<\/li>\n\n\n\n<li>Ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m<\/li>\n\n\n\n<li>Ki\u1ec3m tra nghi\u1ec7m thu l\u00f4 h\u00e0ng th\u01b0\u01a1ng m\u1ea1i<\/li>\n\n\n\n<li>Ki\u1ec3m tra t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u gi\u1eefa c\u00e1c l\u00f4<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Nguy\u00ean l\u00fd 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\">Th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt theo ti\u00eau chu\u1ea9n ASTM D4833 s\u1eed d\u1ee5ng m\u00e1y th\u1eed k\u00e9o ho\u1eb7c n\u00e9n v\u1edbi t\u1ed1c \u0111\u1ed9 gi\u00e3n d\u00e0i kh\u00f4ng \u0111\u1ed5i, \u0111\u01b0\u1ee3c trang b\u1ecb b\u1ed9 k\u1eb9p v\u00f2ng v\u00e0 \u0111\u1ea7u d\u00f2 th\u1ee7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ed9t k\u1eb9p v\u00f2ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 trong l\u00e0 45 \u00b1 0,025 mm<\/li>\n\n\n\n<li>M\u1ed9t thanh \u0111\u00e2m b\u1eb1ng th\u00e9p r\u1eafn c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 8 \u00b1 0,1 mm<\/li>\n\n\n\n<li>\u0110\u1ea7u c\u1ea7n \u0111\u01b0\u1ee3c v\u00e1t c\u1ea1nh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ea1o ra \u0111\u1ed9 th\u00e2m nh\u1eadp c\u00f3 ki\u1ec3m so\u00e1t<\/li>\n\n\n\n<li>T\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m kh\u00f4ng \u0111\u1ed5i l\u00e0 300 \u00b1 10 mm\/ph\u00fat<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eabu th\u1eed v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ee1 \u1edf khu v\u1ef1c trung t\u00e2m gi\u1eefa c\u00e1c v\u00f2ng k\u1eb9p. Khi thanh th\u00e9p di chuy\u1ec3n xu\u1ed1ng d\u01b0\u1edbi, \u1ee9ng su\u1ea5t t\u1eadp trung t\u1ea1i \u0111o\u1ea1n ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ee1 cho \u0111\u1ebfn khi v\u1eadt li\u1ec7u b\u1ecb \u0111\u1ee9t g\u00e3y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea3i tr\u1ecdng \u0111\u1ec9nh \u0111\u01b0\u1ee3c ghi nh\u1eadn l\u00e0 ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m li\u00ean quan.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ch\u1ec9 s\u1ed1 ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 t\u1ea1i sao ch\u1ec9 s\u1ed1 n\u00e0y l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 s\u1ed1 ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua so s\u00e1nh c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t l\u1edbp m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng cao h\u01a1n c\u00f3 th\u1ec3 mang l\u1ea1i s\u1ef1 b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n tr\u01b0\u1edbc:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1eefng vi\u00ean \u0111\u00e1 s\u1eafc nh\u1ecdn n\u1eb1m d\u01b0\u1edbi l\u1edbp l\u00f3t<\/li>\n\n\n\n<li>Thi\u1ec7t h\u1ea1i do thi c\u00f4ng<\/li>\n\n\n\n<li>S\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a r\u1ec5<\/li>\n\n\n\n<li>L\u01b0u l\u01b0\u1ee3ng thi\u1ebft b\u1ecb<\/li>\n\n\n\n<li>Th\u00f4ng tin li\u00ean h\u1ec7 t\u1ed5ng h\u1ee3p<\/li>\n\n\n\n<li>\u00c1p l\u1ef1c l\u1eafp \u0111\u1eb7t<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh ch\u1ea5t n\u00e0y tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c l\u1edbp l\u00f3t b\u00e3i ch\u00f4n l\u1ea5p, h\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n ch\u1ea5t th\u1ea3i trong khai th\u00e1c m\u1ecf, ao nu\u00f4i tr\u1ed3ng n\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c h\u1ed3 ch\u1ee9a n\u01b0\u1edbc \u2014 nh\u1eefng n\u01a1i m\u00e0 s\u1ef1 c\u1ed1 th\u1ee7ng c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng r\u1ee7i ro l\u1edbn v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 mua h\u00e0ng \u0111\u01b0a c\u00e1c y\u00eau c\u1ea7u theo ti\u00eau chu\u1ea9n ASTM D4833 v\u00e0o h\u1ed3 s\u01a1 y\u00eau c\u1ea7u mua s\u1eafm v\u00ec ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p m\u1ed9t c\u01a1 s\u1edf chung \u0111\u1ec3 so s\u00e1nh c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111\u00e2m th\u1ee7ng m\u00e0ng ch\u1ed1ng th\u1ea5m m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady, ph\u00f2ng th\u00ed nghi\u1ec7m ph\u1ea3i s\u1eed d\u1ee5ng c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e1y th\u1eed k\u00e9o ho\u1eb7c n\u00e9n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D4833 y\u00eau c\u1ea7u ph\u1ea3i s\u1eed d\u1ee5ng m\u00e1y th\u1eed nghi\u1ec7m v\u1edbi t\u1ed1c \u0111\u1ed9 gi\u00e3n d\u00e0i kh\u00f4ng \u0111\u1ed5i, c\u00f3 kh\u1ea3 n\u0103ng duy tr\u00ec t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111o l\u01b0\u1eddng t\u1ea3i tr\u1ecdng ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n k\u00e9o Cell Instruments TST-01 r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng theo ti\u00eau chu\u1ea9n ASTM D4833 v\u00ec m\u00e1y h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c t\u1eeb 1 \u0111\u1ebfn 500 mm\/ph\u00fat v\u00e0 \u0111\u1ea3m b\u1ea3o ki\u1ec3m so\u00e1t \u0111\u1ed9 d\u1ecbch chuy\u1ec3n ch\u00ednh x\u00e1c th\u00f4ng qua h\u1ec7 th\u1ed1ng v\u00edt me bi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n d\u1ef1a tr\u00ean PLC v\u00e0 m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng HMI 7 inch c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi v\u1eadn h\u00e0nh theo d\u00f5i c\u00e1c \u0111\u01b0\u1eddng cong l\u1ef1c v\u00e0 ti\u1ebfn tr\u00ecnh th\u1eed nghi\u1ec7m theo th\u1eddi gian th\u1ef1c. Thi\u1ebft b\u1ecb n\u00e0y c\u0169ng h\u1ed7 tr\u1ee3 c\u00e1c b\u1ed9 k\u1eb9p th\u1eed nghi\u1ec7m \u0111\u00e2m th\u1ee7ng, b\u1ed9 k\u1eb9p th\u1eed nghi\u1ec7m k\u00e9o, b\u1ed9 k\u1eb9p th\u1eed nghi\u1ec7m b\u00f3c t\u00e1ch v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n t\u00f9y ch\u1ec9nh kh\u00e1c, nh\u1edd \u0111\u00f3 r\u1ea5t h\u1eefu \u00edch cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ed9 k\u1eb9p v\u00f2ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 k\u1eb9p v\u00f2ng gi\u00fap c\u1ed1 \u0111\u1ecbnh m\u1eabu th\u1eed m\u00e0 kh\u00f4ng b\u1ecb tr\u01b0\u1ee3t. Ti\u00eau chu\u1ea9n ASTM D4833 quy \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh khe k\u1eb9p l\u00e0 45 mm v\u00e0 khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng c\u00e1c b\u1ec1 m\u1eb7t c\u00f3 r\u00e3nh, v\u00f2ng \u0111\u1ec7m O-ring ho\u1eb7c gi\u1ea5y nh\u00e1m th\u00f4 \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thanh th\u00e9p ch\u1ed1ng \u0111\u00e2m th\u1ee7ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thanh ch\u1ecdc ti\u00eau chu\u1ea9n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 8 mm v\u00e0 c\u00f3 m\u00e9p v\u00e1t. H\u00ecnh d\u1ea1ng thanh \u0111\u1ed3ng nh\u1ea5t gi\u00fap \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 l\u1eb7p l\u1ea1i \u0111\u01b0\u1ee3c gi\u1eefa c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Chu\u1ea9n b\u1ecb m\u1eabu theo ti\u00eau chu\u1ea9n ASTM D4833<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c chu\u1ea9n b\u1ecb m\u1eabu \u0111\u00fang c\u00e1ch c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a k\u1ebft qu\u1ea3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D4833 khuy\u1ebfn ngh\u1ecb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u01b0\u1eddng k\u00ednh m\u1eabu t\u1ed1i thi\u1ec3u: 100 mm<\/li>\n\n\n\n<li>L\u1ea5y m\u1eabu d\u1ecdc theo chi\u1ec1u r\u1ed9ng c\u1ee7a cu\u1ed9n<\/li>\n\n\n\n<li>Tr\u00e1nh l\u1ea5y m\u1eabu \u1edf g\u1ea7n m\u00e9p ho\u1eb7c m\u00e9p v\u1ea3i<\/li>\n\n\n\n<li>L\u1ef1a ch\u1ecdn c\u00e1c m\u1eabu theo \u0111\u01b0\u1eddng ch\u00e9o tr\u00ean to\u00e0n b\u1ed9 m\u1eabu<\/li>\n\n\n\n<li>\u0110i\u1ec1u ch\u1ec9nh m\u1eabu \u0111\u1ec3 \u0111\u1ea1t tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng \u0111\u1ed9 \u1ea9m tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n n\u00e0y c\u0169ng khuy\u1ebfn ngh\u1ecb n\u00ean l\u1ea5y \u00edt nh\u1ea5t n\u0103m m\u1eabu cho m\u1ed7i m\u1eabu th\u1eed khi kh\u00f4ng c\u00f3 s\u1ed1 li\u1ec7u \u01b0\u1edbc t\u00ednh v\u1ec1 \u0111\u1ed9 bi\u1ebfn thi\u00ean t\u1eeb tr\u01b0\u1edbc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 \u0111\u1ee7 d\u1eef li\u1ec7u l\u1ecbch s\u1eed, s\u1ed1 l\u01b0\u1ee3ng m\u1eabu c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n theo ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 s\u1ed1 bi\u1ebfn thi\u00ean v\u00e0 gi\u00e1 tr\u1ecb t c\u1ee7a Student.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quy tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ed9 ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ed9 ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt th\u01b0\u1eddng bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u0110i\u1ec1u ch\u1ec9nh \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u1ee7a c\u00e1c m\u1eabu th\u1eed sao cho ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n ph\u00f2ng th\u00ed nghi\u1ec7m quy \u0111\u1ecbnh.<\/li>\n\n\n\n<li>Ch\u1ecdn d\u1ea3i \u0111o ph\u00f9 h\u1ee3p c\u1ee7a c\u1ea3m bi\u1ebfn l\u1ef1c.<\/li>\n\n\n\n<li>K\u1eb9p m\u1eabu th\u1eed th\u1eadt ch\u1eafc ch\u1eafn gi\u1eefa c\u00e1c gi\u00e1 \u0111\u1ee1 h\u00ecnh v\u00f2ng.<\/li>\n\n\n\n<li>\u0110\u1eb7t que ch\u1ecdc sao cho tr\u00f9ng kh\u1edbp v\u1edbi t\u00e2m c\u1ee7a v\u00f9ng th\u1eed nghi\u1ec7m kh\u00f4ng \u0111\u01b0\u1ee3c gia c\u1ed1.<\/li>\n\n\n\n<li>\u0110\u1eb7t t\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m l\u00e0 300 mm\/ph\u00fat.<\/li>\n\n\n\n<li>Ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m cho \u0111\u1ebfn khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ee9t ho\u00e0n to\u00e0n.<\/li>\n\n\n\n<li>Ghi l\u1ea1i l\u1ef1c \u0111\u00e2m xuy\u00ean t\u1ed1i \u0111a.<\/li>\n\n\n\n<li>T\u00ednh gi\u00e1 tr\u1ecb trung b\u00ecnh v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n cho t\u1ea5t c\u1ea3 c\u00e1c m\u1eabu.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt composite, \u0111\u01b0\u1eddng cong l\u1ef1c c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n hai gi\u00e1 tr\u1ecb \u0111\u1ec9nh. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, ti\u00eau chu\u1ea9n ASTM D4833 y\u00eau c\u1ea7u ph\u1ea3i b\u00e1o c\u00e1o gi\u00e1 tr\u1ecb \u0111\u1ec9nh \u0111\u1ea7u ti\u00ean, ngay c\u1ea3 khi gi\u00e1 tr\u1ecb \u0111\u1ec9nh th\u1ee9 hai cao h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ed9 d\u00e0y v\u1eadt li\u1ec7u<\/li>\n\n\n\n<li>Lo\u1ea1i polymer<\/li>\n\n\n\n<li>C\u1ea5u tr\u00fac gia c\u1ed1<\/li>\n\n\n\n<li>K\u1ebft c\u1ea5u b\u1ec1 m\u1eb7t<\/li>\n\n\n\n<li>X\u1eed l\u00fd m\u1eabu<\/li>\n\n\n\n<li>Tr\u01b0\u1ee3t k\u1eb9p<\/li>\n\n\n\n<li>M\u00f2n thanh \u0111\u00e2m<\/li>\n\n\n\n<li>Bi\u1ebfn \u0111\u1ed9ng t\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m<\/li>\n\n\n\n<li>V\u1ecb tr\u00ed m\u1eabu trong cu\u1ed9n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e2n vi\u00ean ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ea7n duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y nh\u1eb1m gi\u1ea3m thi\u1ec3u \u0111\u1ed9 bi\u1ebfn \u0111\u1ed9ng v\u00e0 n\u00e2ng cao t\u00ednh l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D4833 mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i \u00edch cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Quy tr\u00ecnh th\u1eed nghi\u1ec7m nhanh ch\u00f3ng v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i<\/li>\n\n\n\n<li>So s\u00e1nh d\u1ec5 d\u00e0ng gi\u1eefa c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u<\/li>\n\n\n\n<li>H\u1eefu \u00edch cho vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ecbnh k\u1ef3<\/li>\n\n\n\n<li>H\u1ed7 tr\u1ee3 ki\u1ec3m th\u1eed nghi\u1ec7m nh\u1eadn h\u00e0ng<\/li>\n\n\n\n<li>Gi\u00fap x\u00e1c \u0111\u1ecbnh s\u1ef1 bi\u1ebfn \u0111\u1ed9ng trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t<\/li>\n\n\n\n<li>Cung c\u1ea5p d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady cho t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt<\/li>\n\n\n\n<li>T\u0103ng c\u01b0\u1eddng ni\u1ec1m tin c\u1ee7a ng\u01b0\u1eddi mua v\u00e0o hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e0ng ch\u1ed1ng th\u1ea5m<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng ty s\u1ea3n xu\u1ea5t m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt, v\u1ea3i \u0111\u1ecba k\u1ef9 thu\u1eadt, l\u1edbp l\u00f3t composite ho\u1eb7c m\u00e0ng ch\u1ed1ng th\u1ea5m, vi\u1ec7c th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833 c\u00f3 th\u1ec3 c\u1ee7ng c\u1ed1 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh ch\u1ee9ng nh\u1eadn s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng.<\/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 D4833 \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 D4833 \u0111o l\u1ef1c t\u1ed1i \u0111a c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e2m th\u1ee7ng m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt ho\u1eb7c v\u1eadt li\u1ec7u t\u01b0\u01a1ng t\u1ef1 b\u1eb1ng m\u1ed9t thanh th\u00e9p trong \u0111i\u1ec1u ki\u1ec7n ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/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\">\u0110\u01b0\u1eddng k\u00ednh que ch\u1ecdc th\u1ee7ng theo ti\u00eau chu\u1ea9n ASTM D4833 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-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\">Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a thanh th\u00e9p d\u00f9ng \u0111\u1ec3 th\u1eed \u0111\u1ed9 th\u1ee7ng l\u00e0 8 \u00b1 0,1 mm.<\/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\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D4833 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-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\">Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m l\u00e0 300 \u00b1 10 mm\/ph\u00fat.<\/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\">N\u00ean x\u00e9t nghi\u1ec7m bao nhi\u00eau m\u1eabu?<\/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\">H\u1ea7u h\u1ebft c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec1u ti\u1ebfn h\u00e0nh x\u00e9t nghi\u1ec7m \u00edt nh\u1ea5t n\u0103m m\u1eabu th\u1eed cho m\u1ed7i m\u1eabu khi kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u th\u1ed1ng k\u00ea l\u1ecbch s\u1eed.<\/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 ti\u00eau chu\u1ea9n ASTM D4833 l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt?<\/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\">\u0110i\u1ec1u n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u00e0ng ch\u1ed1ng th\u1ea5m c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c l\u1ef1c \u0111\u00e2m xuy\u00ean t\u1eadp trung trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n, l\u1eafp \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh hay kh\u00f4ng.<\/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\">Ti\u00eau chu\u1ea9n ASTM D4833 c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 th\u1eed nghi\u1ec7m m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt composite 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-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\">\u0110\u00fang v\u1eady. <a href=\"https:\/\/store.astm.org\/d4833_d4833m-07r20.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4833<\/a> c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt composite v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m li\u00ean quan. N\u1ebfu \u0111\u01b0\u1eddng cong l\u1ef1c xu\u1ea5t hi\u1ec7n hai \u0111\u1ec9nh, th\u00ec n\u00ean ghi nh\u1eadn \u0111\u1ec9nh \u0111\u1ea7u ti\u00ean.<\/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 D4833 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ee7ng c\u1ee7a m\u00e0ng \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 c\u00e1c v\u1eadt li\u1ec7u li\u00ean quan b\u1eb1ng c\u00e1ch \u0111o l\u1ef1c t\u1ed1i \u0111a c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u1ed9t thanh th\u00e9p l\u00e0m r\u00e1ch m\u1eabu th\u1eed \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb k\u1eb9p v\u00f2ng, thanh th\u1ee7ng \u0111\u01b0\u1eddng k\u00ednh 8 mm v\u00e0 t\u1ed1c \u0111\u1ed9 th\u1eed nghi\u1ec7m l\u00e0 300 mm\/ph\u00fat.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true},"standard-category":[56],"class_list":["post-1098","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/standard\/1098","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=1098"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.geo-tester.com\/vi\/wp-json\/wp\/v2\/standard-category?post=1098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}