{"id":634,"date":"2026-02-26T06:17:51","date_gmt":"2026-02-26T06:17:51","guid":{"rendered":"https:\/\/www.teartester.com\/?post_type=standard&#038;p=634"},"modified":"2026-02-28T08:22:07","modified_gmt":"2026-02-28T08:22:07","slug":"astm-d624","status":"publish","type":"standard","link":"https:\/\/www.teartester.com\/vi\/standard\/astm-d624\/","title":{"rendered":"ASTM D624"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u0110\u1ed9 b\u1ec1n x\u00e9 c\u1ee7a cao su: T\u1ea1i sao ti\u00eau chu\u1ea9n ASTM D624 l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0 h\u1ecfng do r\u00e1ch l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn d\u1eabn \u0111\u1ebfn s\u1ef1 c\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng c\u00e1c s\u1ea3n ph\u1ea9m cao su v\u00e0 ch\u1ea5t \u0111\u00e0n h\u1ed3i. Khi ti\u1ebfp x\u00fac v\u1edbi c\u00e1c \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t, v\u1ebft c\u1eaft ho\u1eb7c khuy\u1ebft t\u1eadt, ch\u1ea5t \u0111\u00e0n h\u1ed3i c\u00f3 th\u1ec3 b\u1ecb r\u00e1ch lan r\u1ed9ng d\u1ea7n, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn vi\u1ec7c v\u1eadt li\u1ec7u b\u1ecb \u0111\u1ee9t g\u00e3y. <strong>\u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a cao su<\/strong> Vi\u1ec7c \u0111\u00e1nh gi\u00e1 theo ti\u00eau chu\u1ea9n ASTM D624 gi\u00fap c\u00e1c k\u1ef9 s\u01b0 hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1ch c\u00e1c v\u1eadt li\u1ec7u ph\u1ea3n \u1ee9ng khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c x\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 \u0111o l\u01b0\u1eddng n\u00e0y gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng lan truy\u1ec1n v\u1ebft n\u1ee9t<\/li>\n\n\n\n<li>S\u1ef1 \u1ed5n \u0111\u1ecbnh v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng gi\u1eefa c\u00e1c l\u00f4<\/li>\n\n\n\n<li>\u1ea2nh h\u01b0\u1edfng c\u1ee7a qu\u00e1 tr\u00ecnh pha ch\u1ebf, x\u1eed l\u00fd v\u00e0 thay \u0111\u1ed5i c\u00f4ng th\u1ee9c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m kh\u00f4ng tr\u1ef1c ti\u1ebfp ph\u1ea3n \u00e1nh hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf, nh\u01b0ng ch\u00fang t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng quan tr\u1ecdng cho vi\u1ec7c \u0111\u00e1nh gi\u00e1 so s\u00e1nh v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00e0n h\u1ed3i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00e0n h\u1ed3i<\/strong> Ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong ti\u00eau chu\u1ea9n ASTM D624 bao g\u1ed3m vi\u1ec7c t\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c k\u00e9o li\u00ean t\u1ee5c l\u00ean m\u1eabu th\u1eed \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb cho \u0111\u1ebfn khi m\u1eabu b\u1ecb \u0111\u1ee9t ho\u00e0n to\u00e0n. M\u00e1y th\u1eed k\u00e9o t\u00e1c d\u1ee5ng l\u1ef1c v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. L\u1ef1c t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ghi nh\u1eadn, chia cho \u0111\u1ed9 d\u00e0y c\u1ee7a m\u1eabu th\u1eed, s\u1ebd cho bi\u1ebft \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u1ee7a l\u1edbp m\u00e0ng bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t<\/li>\n\n\n\n<li>H\u00ecnh h\u1ecdc m\u1eabu<\/li>\n\n\n\n<li>T\u1ed1c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng<\/li>\n\n\n\n<li>\u0110\u1eb7c t\u00ednh d\u1ecb h\u01b0\u1edbng c\u01a1 h\u1ecdc<\/li>\n\n\n\n<li>\u0110\u1ed9 d\u00e0y v\u1eadt li\u1ec7u<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec m\u1ed7i thi\u1ebft k\u1ebf m\u1eabu th\u1eed \u0111o l\u01b0\u1eddng m\u1ed9t \u0111\u1eb7c t\u00ednh r\u00e1ch kh\u00e1c nhau, ti\u00eau chu\u1ea9n ASTM D624 quy \u0111\u1ecbnh r\u00f5 r\u00e0ng r\u1eb1ng <strong>kh\u00f4ng th\u1ec3 so s\u00e1nh k\u1ebft qu\u1ea3 gi\u1eefa c\u00e1c lo\u1ea1i<\/strong>. Vi\u1ec7c l\u1ef1a ch\u1ecdn h\u00ecnh h\u1ecdc ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c trong \u0111\u00e1nh gi\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o: C\u00e1c lo\u1ea1i m\u1eabu th\u1eed theo ti\u00eau chu\u1ea9n ASTM D624<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Ti\u00eau chu\u1ea9n ASTM D624 Lo\u1ea1i C<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D624 Lo\u1ea1i C<\/strong> s\u1eed d\u1ee5ng m\u1eabu th\u1eed c\u00f3 g\u00f3c 90\u00b0 m\u00e0 kh\u00f4ng c\u00f3 v\u1ebft c\u1eaft s\u1eb5n. Lo\u1ea1i n\u00e0y ch\u1ee7 y\u1ebfu d\u00f9ng \u0111\u1ec3 \u0111o <strong>\u0111\u1ed9 b\u1ec1n k\u00e9o ban \u0111\u1ea7u<\/strong>, t\u1eadp trung v\u00e0o c\u00e1ch v\u1eadt li\u1ec7u ph\u1ea3n \u1ee9ng t\u1ea1i \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t. N\u1ebfu hi\u1ec7n t\u01b0\u1ee3ng r\u00e1ch kh\u00f4ng b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ec9nh, k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 ph\u1ea3n \u00e1nh h\u00e0nh vi k\u00e9o gi\u00e3n thay v\u00ec h\u00e0nh vi r\u00e1ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Ti\u00eau chu\u1ea9n ASTM D624 Lo\u1ea1i B<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D624 Lo\u1ea1i B<\/strong> s\u1eed d\u1ee5ng m\u1ed9t m\u1eabu th\u1eed h\u00ecnh l\u01b0\u1ee1i li\u1ec1m c\u00f3 r\u00e3nh v\u00e0 c\u00e1c m\u1ea5u k\u1eb9p. Thi\u1ebft b\u1ecb n\u00e0y cho ph\u00e9p \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c <strong>s\u1ef1 lan truy\u1ec1n v\u1ebft n\u1ee9t<\/strong>, do \u0111\u00f3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c \u01b0u ti\u00ean \u00e1p d\u1ee5ng khi k\u00edch th\u01b0\u1edbc m\u1eabu cho ph\u00e9p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Ti\u00eau chu\u1ea9n ASTM D624 Lo\u1ea1i A<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D624 Lo\u1ea1i A<\/strong> ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u0169ng \u0111\u00e1nh gi\u00e1 s\u1ef1 lan truy\u1ec1n v\u1ebft r\u00e1ch nh\u01b0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi ch\u1ec9 c\u00f3 s\u1eb5n c\u00e1c m\u1eabu t\u1ea5m nh\u1ecf h\u01a1n. H\u00ecnh d\u1ea1ng c\u1ee7a n\u00f3 mang l\u1ea1i m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf g\u1ecdn nh\u1eb9 cho c\u00e1c v\u1eadt li\u1ec7u c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1n ch\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Ti\u00eau chu\u1ea9n ASTM D624 Lo\u1ea1i T<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D624 Lo\u1ea1i T<\/strong> \u00e1p d\u1ee5ng thi\u1ebft k\u1ebf r\u00e1ch qu\u1ea7n c\u1ed5 \u0111i\u1ec3n. Hai \u1ed1ng qu\u1ea7n \u0111\u01b0\u1ee3c k\u00e9o ra xa nhau trong khi m\u00e1y ghi l\u1ea1i l\u1ef1c t\u00e1c \u0111\u1ed9ng li\u00ean t\u1ee5c. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ph\u1ea3n \u00e1nh r\u00f5 r\u00e0ng h\u00e0nh vi lan truy\u1ec1n d\u1ecdc theo chi\u1ec1u d\u00e0i \u1ed1ng qu\u1ea7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. ASTM D624 Lo\u1ea1i CP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>ASTM D624 Lo\u1ea1i CP<\/strong> M\u1eabu n\u00e0y l\u00e0 phi\u00ean b\u1ea3n c\u1ea3i ti\u1ebfn c\u1ee7a thi\u1ebft k\u1ebf r\u00e1ch qu\u1ea7n, v\u1edbi \u0111\u01b0\u1eddng r\u00e1ch \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n v\u00e0 \u1ed1ng qu\u1ea7n d\u00e0y h\u01a1n. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n s\u1ef1 l\u1ec7ch h\u01b0\u1edbng v\u00e0 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 gi\u00e3n n\u1edf, t\u1eeb \u0111\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u lan truy\u1ec1n \u1ed5n \u0111\u1ecbnh h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p v\u00e0 quy tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00ednh x\u00e1c <strong>Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o<\/strong> Theo ti\u00eau chu\u1ea9n ASTM D624, vi\u1ec7c chu\u1ea9n b\u1ecb m\u1eabu th\u1eed ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang quy tr\u00ecnh v\u00e0 vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb ph\u1ea3i ch\u00ednh x\u00e1c. C\u00e1c b\u01b0\u1edbc ti\u00eau bi\u1ec3u bao g\u1ed3m:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>X\u1eed l\u00fd v\u00e0 chu\u1ea9n b\u1ecb m\u1eabu theo c\u00e1c y\u00eau c\u1ea7u v\u1ec1 h\u00ecnh h\u1ecdc.<\/li>\n\n\n\n<li>G\u1eafn m\u1eabu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o l\u1ef1c t\u00e1c \u0111\u1ed9ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 gi\u1eef ch\u1eafc ch\u1eafn.<\/li>\n\n\n\n<li>V\u1eadn h\u00e0nh m\u00e1y \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u1ea7u tr\u1ee5c theo quy \u0111\u1ecbnh:\n<ul class=\"wp-block-list\">\n<li>500 \u00b1 50 mm\/ph\u00fat \u0111\u1ed1i v\u1edbi lo\u1ea1i A, B, C<\/li>\n\n\n\n<li>50 \u00b1 5 mm\/ph\u00fat \u0111\u1ed1i v\u1edbi lo\u1ea1i T, CP<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Ghi l\u1ea1i l\u1ef1c x\u00e9 t\u1ed1i \u0111a ho\u1eb7c \u0111\u01b0\u1eddng cong l\u1ef1c li\u00ean t\u1ee5c.<\/li>\n\n\n\n<li>T\u00ednh to\u00e1n \u0111\u1ed9 b\u1ec1n r\u00e1ch tr\u00ean \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0y.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00e1y th\u1eed k\u00e9o \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh l\u1eb7p l\u1ea1i v\u00e0 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng tr\u01b0\u1ee3t ho\u1eb7c l\u1ec7ch tr\u1ee5c.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[2],"class_list":["post-634","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/standard\/634","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/types\/standard"}],"wp:attachment":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/media?parent=634"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/standard-category?post=634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}