{"id":24727,"date":"2016-04-06T08:24:06","date_gmt":"2016-04-06T08:24:06","guid":{"rendered":"https:\/\/globecore.dev\/products\/road-construction-equipment\/bitumen-modification-unit.html"},"modified":"2025-09-10T12:32:04","modified_gmt":"2025-09-10T12:32:04","slug":"bitumen-modification-unit","status":"publish","type":"page","link":"https:\/\/globecore.dev\/vi\/products\/bitumen-modification-unit\/","title":{"rendered":"M\u00c1Y BI\u1ebeN T\u00cdNH BITUM. S\u1ea2N XU\u1ea4T BITUMEN BI\u1ebeN T\u00cdNH"},"content":{"rendered":"<p style=\"text-align: justify;\">\u1ee8ng d\u1ee5ng c\u00e1c polyme v\u00e0o bitum truy\u1ec1n th\u1ed1ng (bitum kh\u00f4ng bi\u1ebfn t\u00ednh) gi\u00fap ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu kh\u00f4ng thu\u1eadn l\u1ee3i v\u00e0 trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111\u01b0\u1eddng ch\u1ecbu t\u1ea3i tr\u1ecdng n\u1eb7ng. Th\u00f4ng th\u01b0\u1eddng, polymer-SBS (styrene-butadiene-styrene) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ebfn t\u00ednh bitum. Ch\u00fang l\u00e0 cao su t\u1ef1 nhi\u00ean. Khi t\u01b0\u01a1ng t\u00e1c v\u1edbi bitum, SBS-polymer l\u00e0m t\u0103ng t\u00ednh linh ho\u1ea1t, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 s\u1ee9c m\u1ea1nh c\u1ee7a n\u00f3. C\u00e1c polyme nh\u01b0 v\u1eady l\u00e0m gi\u1ea3m \u0111\u1ed9 nh\u1ea1y c\u1ee7a ch\u1ea5t k\u1ebft d\u00ednh v\u1edbi nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao v\u00e0 cho ph\u00e9p c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 c\u00e1c \u0111\u1eb7c t\u00ednh s\u1eed d\u1ee5ng c\u1ee7a n\u00f3 so v\u1edbi bitum kh\u00f4ng bi\u1ebfn t\u00ednh. T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a bitum v\u00e0 polyme l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea7u ra ch\u1ea5t l\u01b0\u1ee3ng cao. Polyme c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c th\u00e0nh ph\u1ea7n d\u1ea7u c\u1ee7a ch\u1ea5t k\u1ebft d\u00ednh, gi\u00fap b\u1ea3o to\u00e0n c\u1ea5u tr\u00fac. Do qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh, bitum \u0111\u01b0\u1ee3c bi\u1ebfn th\u00e0nh m\u1ed9t ch\u1ea5t \u0111\u00e0n h\u1ed3i s\u1edf h\u1eefu \u0111\u1ed9 \u0111\u00e0n h\u1ed3i t\u1ed1t h\u01a1n. C\u00e1c chuy\u00ean gia c\u00f4ng nghi\u1ec7p h\u00f3a d\u1ea7u hi\u1ec7n \u0111\u1ea1i lu\u00f4n c\u1ed1 g\u1eafng t\u1ed1i \u0111a h\u00f3a s\u1ea3n l\u01b0\u1ee3ng d\u1ea7u nh\u1eb9 v\u00e0 chi\u1ebft xu\u1ea5t h\u1ea7u h\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n parafin-naphthenic t\u1eeb bitum. Vi\u1ec7c n\u00e0y l\u00e0m gi\u1ea3m t\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3 \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 l\u00e0m gi\u1ea3m \u0111i\u1ec3m l\u00e0m m\u1ec1m \u1edf nhi\u1ec7t \u0111\u1ed9 cao. H\u1ea7u h\u1ebft bitum hi\u1ec7n \u0111\u1ea1i s\u1ebd m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i \u1edf kho\u1ea3ng hai m\u01b0\u01a1i \u0111\u1ed9 (20oC) v\u00e0 b\u1eaft \u0111\u1ea7u m\u1ec1m \u1edf gi\u1eefa + 45oC \u0111\u1ebfn 48oC. Do \u0111\u00f3, vi\u1ec7c s\u1eed d\u1ee5ng bitum kh\u00f4ng bi\u1ebfn t\u00ednh trong c\u1ea3 hai lo\u1ea1i c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng \u0111\u00f2i h\u1ecfi ch\u1ea5t k\u1ebft d\u00ednh ph\u1ea3i c\u00f3 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 t\u1eeb -40oC \u0111\u1ebfn + 70oC v\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u l\u1ee3p, th\u01b0\u1eddng ph\u1ea3i ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 90oC, \u0111i\u1ec1u n\u00e0y kh\u00f4ng hi\u1ec7u qu\u1ea3. May m\u1eafn thay, c\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 thay \u0111\u1ed5i v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t c\u1ee7a bitum b\u1eb1ng c\u00e1ch tr\u1ed9n n\u00f3 v\u1edbi c\u00e1c ch\u1ea5t ph\u1ee5 gia kh\u00e1c nhau. C\u00e1ch t\u1ed1t nh\u1ea5t trong vi\u1ec7c t\u1ea1o ra m\u1ed9t lo\u1ea1i bitum \u0111\u1eb7c bi\u1ec7t nh\u01b0 v\u1eady l\u00e0 s\u1eed d\u1ee5ng m\u00e1y bi\u1ebfn t\u00ednh bitum <em><strong>GlobeCore<\/strong><\/em> USB. Ph\u01b0\u01a1ng ph\u00e1p \u00edt t\u1ed1n k\u00e9m nh\u1ea5t \u0111\u1ec3 c\u1ea3i thi\u1ec7n ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng c\u1ee7a bitum l\u00e0 th\u00eam m\u1ed9t l\u01b0\u1ee3ng l\u1edbn (15% tr\u1edf l\u00ean) ch\u1ea5t \u0111\u1ed9n kho\u00e1ng nh\u01b0 l\u00e0 ph\u1ea5n ho\u1eb7c b\u1ed9t talc. K\u1ebft qu\u1ea3 l\u00e0 t\u1ea1o ra m\u1ed9t h\u1ed7n h\u1ee3p r\u1ea5t d\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 ch\u1ea5t mastic \u0111\u1ec3 tr\u00e1m. Ph\u1ed5 bi\u1ebfn h\u01a1n l\u00e0 bi\u1ebfn \u0111\u1ed5i t\u00ednh ch\u1ea5t bitum b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ee5 c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c vi\u00ean cao su t\u1eeb l\u1ed1p xe \u0111\u00e3 qua s\u1eed d\u1ee5ng ho\u1eb7c nh\u1ef1a propylene, b\u1ecdt cao su ataxic. Th\u1eadt kh\u00f4ng may, c\u00f4ng ngh\u1ec7 tr\u1ed9n ch\u1ea5t \u0111\u1ed9n nh\u01b0 v\u1eady v\u1edbi bitum \u0111\u00f2i h\u1ecfi nhi\u1ec7t \u0111\u1ed9 tr\u00ean 180oC. Nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 v\u1eady s\u1ebd l\u00e0m tan r\u00e3 c\u1ea5u tr\u00fac c\u1ee7a nh\u1ef1a cao su v\u00e0 oxy h\u00f3a bitum. K\u1ebft qu\u1ea3 l\u00e0 m\u1ed9t bitum bi\u1ebfn t\u00ednh v\u1edbi \u0111i\u1ec3m l\u00e0m m\u1ec1m cao, nh\u01b0ng c\u00f3 \u0111\u1ed9 d\u1ebbo th\u1ea5p, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 \u0111\u1ed9 gi\u00f2n cao \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. \u0110i\u1ec1u n\u00e0y g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c s\u1eed d\u1ee5ng trong x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9. Gi\u1ea3i ph\u00e1p cho v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0 th\u00eam v\u00e0o nhi\u1ec1u th\u00e0nh ph\u1ea7n h\u01a1n (ch\u1ea5t gia t\u0103ng \u0111\u1ed9 n\u1edf, ch\u1ea5t h\u00f3a d\u1ebbo v\u00e0 ch\u1ea5t k\u1ebft d\u00ednh), do \u0111\u00f3 l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 chi ph\u00ed c\u1ee7a bitum bi\u1ebfn \u0111\u1ed5i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ee8ng d\u1ee5ng c\u00e1c polyme v\u00e0o bitum truy\u1ec1n th\u1ed1ng (bitum kh\u00f4ng bi\u1ebfn t\u00ednh) gi\u00fap ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu kh\u00f4ng thu\u1eadn l\u1ee3i v\u00e0 trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111\u01b0\u1eddng ch\u1ecbu t\u1ea3i tr\u1ecdng n\u1eb7ng. Th\u00f4ng th\u01b0\u1eddng, polymer-SBS (styrene-butadiene-styrene) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ebfn t\u00ednh bitum. Ch\u00fang l\u00e0 cao su t\u1ef1 nhi\u00ean. 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