{"id":20836,"date":"2026-06-07T09:11:43","date_gmt":"2026-06-07T05:11:43","guid":{"rendered":"https:\/\/www.petroacc.com\/cac-loai-nhua-duong"},"modified":"2026-06-07T09:11:43","modified_gmt":"2026-06-07T05:11:43","slug":"cac-loai-nhua-duong","status":"publish","type":"post","link":"https:\/\/www.petroacc.com\/vi\/cac-loai-nhua-duong","title":{"rendered":"C\u00c1C LO\u1ea0I NH\u1ef0A \u0110\u01af\u1edcNG"},"content":{"rendered":"
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C\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng<\/strong><\/p>\n

Nh\u1ef1a \u0111\u01b0\u1eddng d\u1ea7u m\u1ecf l\u00e0 m\u1ed9t ch\u1ea5t l\u1ecfng nh\u1edbt, m\u00e0u \u0111en, bao g\u1ed3m m\u1ed9t l\u01b0\u1ee3ng l\u1edbn hydrocacbon v\u00e0 \u1edf th\u1ec3 r\u1eafn ho\u1eb7c b\u00e1n r\u1eafn \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng. Nh\u1ef1a \u0111\u01b0\u1eddng d\u1ea7u m\u1ecf \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong qu\u00e1 tr\u00ecnh ch\u01b0ng c\u1ea5t v\u00e0 tinh ch\u1ebf d\u1ea7u th\u00f4 t\u1ea1i nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u, trong th\u00e1p ch\u01b0ng c\u1ea5t. <\/p>\n

T\u1ea1i c\u00e1c qu\u1ed1c gia gi\u00e0u d\u1ea7u m\u1ecf, ph\u1ea7n l\u1edbn d\u1ea7u th\u00f4 \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n \u0111\u1ebfn c\u00e1c nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u th\u00f4ng qua \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ec3 tr\u00e1nh chi ph\u00ed ph\u00e1t sinh khi v\u1eadn chuy\u1ec3n b\u1eb1ng t\u00e0u ch\u1edf d\u1ea7u.<\/p>\n

Khi d\u1ea7u th\u00f4 \u0111\u1ebfn nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u; tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u tinh ch\u1ebf, ng\u01b0\u1eddi ta l\u00e0m n\u00f3ng n\u00f3 trong l\u00f2 s\u1ea5y s\u01a1 b\u1ed9 \u0111\u1ebfn kho\u1ea3ng 350 \u0111\u1ed9 C, sau \u0111\u00f3 \u0111\u01b0a v\u00e0o th\u00e1p ch\u01b0ng c\u1ea5t. Trong c\u00e1c giai \u0111o\u1ea1n tinh ch\u1ebf, t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1eb7c t\u00ednh c\u1ee7a d\u1ea7u th\u00f4, b\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng c\u00e1c nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t kh\u00e1c nhau trong th\u00e1p ch\u01b0ng c\u1ea5t, c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c nhau \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u01b0 m\u00f4 t\u1ea3 b\u00ean d\u01b0\u1edbi.<\/p>\n

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  1. \u0110\u1ea7u ti\u00ean, c\u00e1c v\u1eadt li\u1ec7u nh\u1eb9 h\u01a1n nh\u01b0 benzen v\u00e0 propan \u0111\u01b0\u1ee3c t\u00e1ch ra \u1edf \u00e1p su\u1ea5t g\u1ea7n b\u1eb1ng m\u1ed9t \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n c\u1ee7a d\u1ea7u th\u00f4 v\u00e0 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn c\u00e1c b\u1ec3 ch\u1ee9a \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00f3.<\/li>\n
  2. \u1ede b\u01b0\u1edbc th\u1ee9 hai, c\u00e1c nguy\u00ean li\u1ec7u n\u1eb7ng nh\u01b0 x\u0103ng v\u00e0 d\u1ea7u h\u1ecfa \u0111\u01b0\u1ee3c t\u00e1ch ra kh\u1ecfi th\u00e1p ch\u01b0ng c\u1ea5t d\u01b0\u1edbi \u00e1p su\u1ea5t g\u1ea7n ch\u00e2n kh\u00f4ng v\u00e0 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn c\u00e1c b\u1ec3 ch\u1ee9a chuy\u00ean d\u1ee5ng d\u00e0nh cho c\u00e1c s\u1ea3n ph\u1ea9m n\u00e0y.<\/li>\n
  3. \u1ede giai \u0111o\u1ea1n th\u1ee9 ba, h\u1ed7n h\u1ee3p d\u1ea7u, m\u1ee1 v\u00e0 nh\u1ef1a \u0111\u01b0\u1eddng s\u1ebd l\u1eafng xu\u1ed1ng \u0111\u00e1y th\u00e1p ch\u01b0ng c\u1ea5t, sau \u0111\u00f3 \u0111\u01b0\u1ee3c t\u00e1ch ra b\u1eb1ng c\u00e1c thao t\u00e1c \u0111\u1eb7c bi\u1ec7t.<\/li>\n
  4. Cu\u1ed1i c\u00f9ng, ph\u1ea7n v\u1eadt li\u1ec7u n\u1eb7ng h\u01a1n s\u1ebd l\u1eafng xu\u1ed1ng \u0111\u00e1y th\u00e1p ch\u01b0ng c\u1ea5t, \u0111\u00f3 ch\u00ednh l\u00e0 nh\u1ef1a \u0111\u01b0\u1eddng, \u0111\u01b0\u1ee3c t\u1ea1o ra \u1edf giai \u0111o\u1ea1n n\u00e0y b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n thao t\u00e1c h\u00fat ch\u00e2n kh\u00f4ng \u0111\u00e1y (th\u1ed5i kh\u00ed) trong th\u00e1p ch\u01b0ng c\u1ea5t. Sau \u0111\u00e2y, ch\u00fang ta s\u1ebd m\u00f4 t\u1ea3 c\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng kh\u00e1c nhau: <\/li>\n<\/ol>\n

    C\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng l\u00e0 g\u00ec?<\/strong><\/p>\n

    Ngu\u1ed3n t\u00e0i nguy\u00ean d\u1ea7u th\u00f4 c\u00f3 s\u1eb5n \u1edf m\u1ed7i khu v\u1ef1c v\u00e0 qu\u1ed1c gia \u0111\u1ec1u kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng n\u01a1i; ch\u1eb3ng h\u1ea1n nh\u01b0 lo\u1ea1i \u0111\u1ea5t v\u00e0 lo\u1ea1i t\u1ea7ng \u0111\u1ea5t kh\u00e1c nhau, do \u0111\u00f3, d\u1ea7u th\u00f4 c\u00f3 s\u1eb5n \u1edf \u0111\u00f3 c\u0169ng c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c ngu\u1ed3n d\u1ea7u th\u00f4 \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c; k\u1ebft qu\u1ea3 l\u00e0, nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u \u0111\u00f3 c\u0169ng c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau; v\u00ec l\u00fd do n\u00e0y, c\u00e1c chuy\u00ean gia trong ng\u00e0nh d\u1ea7u kh\u00ed, b\u1eb1ng c\u00e1ch ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m tr\u00ean c\u00e1c m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng kh\u00e1c nhau v\u00e0 c\u00e1c lo\u1ea1i d\u1ea7u th\u00f4 kh\u00e1c nhau c\u00f9ng c\u00e1c giai \u0111o\u1ea1n tinh ch\u1ebf c\u1ee7a ch\u00fang t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u, v\u00e0 d\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m c\u00e1c m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng, \u0111\u00e3 t\u1ea1o ra t\u1ed5ng th\u1ec3 c\u00e1c “s\u1ea3n ph\u1ea9m nh\u1ef1a \u0111\u01b0\u1eddng”.<\/p>\n

    Ch\u00fang \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh 8 nh\u00f3m<\/strong> , m\u00e0 ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i th\u00edch chi ti\u1ebft b\u00ean d\u01b0\u1edbi:<\/p>\n

    C\u00e1c th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng nh\u01b0 sau:<\/p>\n

    1 – \u0110\u1ed9 nh\u1edbt C\u1ea4P Ph\u00e2n lo\u1ea1i \u0111\u1ed9 nh\u1edbt<\/p>\n

    2- Ph\u00e2n lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t<\/p>\n

    3- Nh\u1ef1a \u0111\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ea5p \u0111\u1ed9<\/p>\n

    4- Ph\u00e2n lo\u1ea1i theo ph\u01b0\u01a1ng ph\u00e1p CUT-BACK<\/p>\n

    5- Ph\u00e2n lo\u1ea1i b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u00f4 ph\u1ecfng<\/p>\n

    6- Ph\u00e2n lo\u1ea1i OXY H\u00d3A theo ph\u01b0\u01a1ng ph\u00e1p OXY H\u00d3A<\/p>\n

    7- Th\u1eed nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m m\u1ec1m c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng \u0110I\u1ec2M M\u1ec0M<\/p>\n

    8- Th\u1eed nghi\u1ec7m \u0111i\u1ec3m ch\u1edbp ch\u00e1y<\/p>\n

    Ph\u00e2n lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed9 nh\u1edbt<\/strong><\/p>\n

    B\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111\u1ed9 nh\u1edbt tr\u00ean m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng (TH\u1eec NGHI\u1ec6M \u0110\u1ed8 NH\u1edaT), c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ed9 nh\u1edbt c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng; Ngo\u00e0i ra, b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m c\u1ea5p \u0111\u1ed9 nh\u1edbt, b\u1ed1n lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng v\u1edbi c\u1ea5p \u0111\u1ed9 10, 20, 30 v\u00e0 40 \u0111\u01b0\u1ee3c t\u1ea1o ra. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng trong th\u1eed nghi\u1ec7m nh\u1ef1a \u0111\u01b0\u1eddng n\u00e0y, s\u1ed1 c\u00e0ng th\u1ea5p th\u00ec \u0111\u1ed9 nh\u1edbt c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng c\u00e0ng th\u1ea5p, v\u00e0 s\u1ed1 c\u00e0ng cao th\u00ec \u0111\u1ed9 nh\u1edbt c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng c\u00e0ng cao. \u0110\u00e2y c\u0169ng l\u00e0 c\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng VG v\u1edbi \u0111\u1ed9 nh\u1edbt VG 10, VG 20, VG 30 v\u00e0 VG 40, trong \u0111\u00f3 VG 30 v\u00e0 VG 40 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eeda ch\u1eefa v\u1ec9a h\u00e8 v\u00e0 x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng. <\/p>\n

    \u0110\u1ed3ng th\u1eddi, m\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng kh\u00e1c g\u1ecdi l\u00e0 AC 30 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t th\u00f4ng qua th\u1eed nghi\u1ec7m \u0111\u1ed9 nh\u1edbt, v\u00e0 h\u1ea7u h\u1ebft ng\u01b0\u1eddi ti\u00eau d\u00f9ng lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng n\u00e0y \u0111\u1ec1u \u1edf c\u00e1c n\u01b0\u1edbc ch\u00e2u M\u1ef9.<\/p>\n

    \u0110\u1eb7c t\u00ednh c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng AC 30 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u1ef1a \u0111\u01b0\u1eddng VG 30, nh\u01b0ng nh\u1ef1a \u0111\u01b0\u1eddng VG 30 c\u00f3 m\u1ee9c ti\u00eau th\u1ee5 r\u1ea5t cao do \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu c\u1ee7a \u1ea4n \u0110\u1ed9.<\/p>\n

    Ph\u00e2n lo\u1ea1i c\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p HI\u1ec6U SU\u1ea4T<\/strong><\/p>\n

    Tr\u01b0\u1edbc \u0111\u00e2y, \u0111\u1ec3 chu\u1ea9n b\u1ecb nh\u1ef1a \u0111\u01b0\u1eddng theo \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu, s\u1ed1 l\u1ea7n thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, c\u0169ng nh\u01b0 \u0111\u1ed9 gi\u00f2n c\u1ee7a bitum g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t n\u1ebb v\u00e0 r\u1ea1n v\u1ee1 trong \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh, c\u00f9ng v\u1edbi s\u1ef1 co ng\u00f3t c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng do l\u01b0u l\u01b0\u1ee3ng xe t\u1ea3i v\u00e0 xe k\u00e9o ch\u1edf h\u00e0ng n\u1eb7ng, c\u00e1c nh\u00e0 cung c\u1ea5p nh\u1ef1a \u0111\u01b0\u1eddng th\u01b0\u1eddng s\u1eed d\u1ee5ng hai ph\u01b0\u01a1ng ph\u00e1p, h\u1ecd ch\u00fa tr\u1ecdng \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a bitum nh\u01b0 \u0111\u1ed9 xuy\u00ean th\u1ea5u<\/strong> v\u00e0 \u0111\u1ed9 nh\u1edbt c\u1ee7a<\/strong> bitum.<\/p>\n

    Trong hai ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, c\u00e1c nh\u00e0 x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 v\u1ee1, n\u1ee9t v\u00e0 tu\u1ed5i th\u1ecd ng\u1eafn c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng; c\u00e1c nh\u00e0 th\u1ea7u th\u01b0\u1eddng t\u0103ng \u0111\u1ed9 d\u00e0y l\u1edbp nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u1ec3 ph\u1ee7 l\u00ean \u0111\u01b0\u1eddng, \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng chi ph\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 chi ph\u00ed chu\u1ea9n b\u1ecb nh\u1ef1a \u0111\u01b0\u1eddng, v\u1eadn chuy\u1ec3n v\u00e0 thi c\u00f4ng, kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t kinh t\u1ebf.<\/p>\n

    V\u00ec m\u1ee5c \u0111\u00edch n\u00e0y, \u0111\u1ec3 gi\u1ea3m thi\u1ec3u chi ph\u00ed v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u00e3 n\u00eau \u1edf tr\u00ean, c\u1ea7n t\u1ed5 ch\u1ee9c tri\u1ec3n l\u00e3m v\u00e0 m\u1eddi c\u00e1c chuy\u00ean gia t\u1eeb nhi\u1ec1u qu\u1ed1c gia kh\u00e1c nhau tham gia \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng, c\u00f3 t\u00ednh \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c nhau. <\/p>\n

    Vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng ch\u1ea5t l\u01b0\u1ee3ng cao, th\u00edch h\u1ee3p cho c\u00e1c khu v\u1ef1c kh\u00e1c nhau, \u0111\u1ed3ng th\u1eddi ng\u0103n ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 l\u00e3o h\u00f3a, m\u1ecfi, c\u1ee9ng h\u00f3a nh\u1ef1a \u0111\u01b0\u1eddng, tu\u1ed5i th\u1ecd ng\u1eafn c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, n\u1ee9t n\u1ebb v\u00e0 l\u00fan v\u1ec7t b\u00e1nh xe do m\u00f4i tr\u01b0\u1eddng l\u1ea1nh, c\u0169ng nh\u01b0 \u0111\u1ed9 x\u1ed1p, v\u1ee5n v\u1ee1 v\u00e0 r\u00e1ch c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, v\u00e0 vi\u1ec7c c\u00e1t s\u1ecfi v\u01b0\u01a1ng v\u00e3i tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng, v\u00ec \u0111i\u1ec1u n\u00e0y s\u1ebd g\u00e2y h\u01b0 h\u1ea1i \u0111\u01b0\u1eddng s\u00e1 v\u00e0 t\u1ed1n nhi\u1ec1u chi ph\u00ed s\u1eeda ch\u1eefa; m\u1eb7t kh\u00e1c, n\u00f3 c\u00f2n g\u00e2y ra nhi\u1ec1u thi\u1ec7t h\u1ea1i cho xe c\u1ed9 v\u00e0 \u0111\u00f4i khi g\u00e2y ra tai n\u1ea1n giao th\u00f4ng v\u00e0 th\u01b0\u01a1ng vong cho ng\u01b0\u1eddi ng\u1ed3i trong xe. H\u1ecd \u0111\u00e3 ti\u1ebfn h\u00e0nh nhi\u1ec1u cu\u1ed9c \u0111i\u1ec1u tra v\u00e0 th\u1eed nghi\u1ec7m kh\u00e1c nhau. <\/p>\n

    Ngo\u00e0i ra, c\u00e1c chuy\u00ean gia v\u00e0 k\u1ef9 s\u01b0 ng\u01b0\u1eddi M\u1ef9, trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh g\u1ecdi l\u00e0 nghi\u00ean c\u1ee9u v\u00e0 \u0111\u00e1nh gi\u00e1 chi\u1ebfn l\u01b0\u1ee3c \u0111\u01b0\u1eddng cao t\u1ed1c, \u0111\u00e3 ti\u1ebfn h\u00e0nh c\u00e1c th\u1eed nghi\u1ec7m li\u00ean quan \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t ph\u00f9 h\u1ee3p c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd cao, an to\u00e0n \u0111\u01b0\u1eddng b\u1ed9 v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng. Nh\u1eefng \u0111\u00e1nh gi\u00e1 v\u00e0 th\u1eed nghi\u1ec7m n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng cho vi\u1ec7c chu\u1ea9n b\u1ecb m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng m\u1edbi; mang t\u00ean ph\u00e2n lo\u1ea1i theo ph\u01b0\u01a1ng ph\u00e1p c\u1ea5p hi\u1ec7u<\/strong> su\u1ea5t bitum, vi\u1ebft t\u1eaft l\u00e0 PG, trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, c\u00e1c th\u00f4ng s\u1ed1 c\u1ea7n thi\u1ebft nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn \u0111\u1ed5i \u1edf c\u00e1c d\u1ea1ng kh\u00e1c nhau, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t do m\u00f4i tr\u01b0\u1eddng l\u1ea1nh, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t do m\u1ecfi v\u00e0 \u0111i\u1ec1u tra nguy\u00ean nh\u00e2n g\u00e2y c\u1ee9ng bitum trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y nh\u1ef1a \u0111\u01b0\u1eddng; \u0111i\u1ec1u tra nguy\u00ean nh\u00e2n g\u00e2y c\u1ee9ng bitum do th\u1eddi gian tr\u00f4i qua; \u0111\u01b0\u1ee3c ki\u1ec3m tra; \u0111\u1ec3 lo\u1ea1i bitum \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c v\u00f9ng kh\u00e1c nhau v\u00e0 theo c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft kh\u00e1c nhau v\u00e0 c\u00f3 t\u00ednh \u0111\u1ebfn <\/p>\n

    V\u1edbi l\u01b0u l\u01b0\u1ee3ng giao th\u00f4ng c\u1ee7a con \u0111\u01b0\u1eddng \u0111\u00f3, c\u1ea7n ch\u1ecdn lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u00e1nh g\u1eb7p ph\u1ea3i nhi\u1ec1u v\u1ea5n \u0111\u1ec1 \u0111\u00e3 n\u00eau.<\/p>\n

    D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng b\u00e1o d\u00e0nh cho b\u1ea1n<\/p>\n

    B\u1ea3ng ph\u00e2n lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng theo \u0111\u1ed9 xuy\u00ean th\u1ea5u \u0111\u01b0\u1ee3c l\u1eadp b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n\n\n\n\n\n\n\n
    \n

    Ph\u00e2n lo\u1ea1i c\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng<\/strong><\/p>\n<\/td>\n<\/tr>\n

    M\u1ee9c \u0111\u1ed9 th\u00e2m nh\u1eadp<\/strong><\/td>\n\n

    \u0110\u1ed9 nh\u1edbt<\/strong><\/p>\n

    VG 10<\/p>\n

    VG 20<\/p>\n

    VG 30<\/p>\n

    VG 40<\/p>\n<\/td>\n

    		\n

    C\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t<\/strong><\/p>\n<\/td>\n<\/tr>\n

    \n

    Nh\u1ef1a \u0111\u01b0\u1eddng s\u01a1 c\u1ea5p<\/strong><\/p>\n

    \n<\/td>\n

    		\n

    Nh\u1ef1a \u0111\u01b0\u1eddng d\u01b0<\/strong><\/p>\n<\/td>\n<\/tr>\n

    40 – 50<\/td>\nAC 2.5<\/td>\nAR 10<\/td>\nTrang 46 – 22<\/td>\n<\/tr>\n
    60 – 70<\/td>\nAC 5<\/td>\nAR 20<\/td>\nTrang 52 – 28<\/td>\n<\/tr>\n
    85 – 100<\/td>\nAC 10<\/td>\nAR 40<\/td>\nPG 58 – 16<\/td>\n<\/tr>\n
    120 – 150<\/td>\nAC 20<\/td>\nAR 80<\/td>\nTrang 64 – 22<\/td>\n<\/tr>\n
    200 – 300<\/td>\nAC 40<\/td>\nAR 160<\/td>\nPG 70 – 10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ed9 xuy\u00ean th\u1ea5u<\/strong><\/p>\n

    Vi\u1ec7c ph\u00e2n lo\u1ea1i bitum \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p th\u1ea9m th\u1ea5u th\u00f4ng qua vi\u1ec7c th\u1eed nghi\u1ec7m tr\u00ean m\u1eabu bitum theo c\u00e1ch sau.<\/p>\n

    \u0110\u1ea7u ti\u00ean, ch\u00fang ta l\u00e0m n\u00f3ng nh\u1ef1a \u0111\u01b0\u1eddng c\u1ea7n ki\u1ec3m tra \u0111\u1ebfn kho\u1ea3ng 60 \u0111\u1ed9 C ho\u1eb7c cao h\u01a1n \u0111i\u1ec3m h\u00f3a m\u1ec1m, sau \u0111\u00f3 \u0111\u1ed5 v\u00e0o m\u1ed9t v\u1eadt ch\u1ee9a \u0111\u1eb7c bi\u1ec7t c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 6 cm v\u00e0 chi\u1ec1u cao 4 cm, r\u1ed3i \u0111\u1eb7t v\u00e0o b\u1ec3 n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 25 \u0111\u1ed9 C trong 1,5 gi\u1edd cho \u0111\u1ebfn khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng b\u1eb1ng v\u1edbi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc trong b\u1ec3. Sau \u0111\u00f3, l\u1ea5y ra v\u00e0 \u0111\u1eb7t v\u00e0o thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng. \u0110\u1ea7u ti\u00ean, ch\u00fang ta \u0111\u1eb7t thi\u1ebft b\u1ecb v\u1ec1 0, \u0111\u1ed3ng h\u1ed3 b\u1ea5m gi\u1edd d\u1eebng l\u1ea1i, v\u00e0 th\u1ea3 kim 100 gram trong 5 gi\u00e2y, r\u1ed3i \u0111\u1ecdc l\u01b0\u1ee3ng kim xuy\u00ean v\u00e0o nh\u1ef1a \u0111\u01b0\u1eddng v\u00e0 ghi l\u1ea1i qu\u00e1 tr\u00ecnh n\u00e0y t\u1eeb 5 \u0111\u1ebfn 10 l\u1ea7n \u0111\u1ec3 gi\u1ea3m thi\u1ec3u sai s\u1ed1 v\u00e0 t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thao t\u00e1c trong th\u1eed nghi\u1ec7m n\u00e0y. M\u1ed7i l\u1ea7n l\u1eb7p l\u1ea1i qu\u00e1 tr\u00ecnh xuy\u00ean th\u1ea5u c\u1ee7a kim, c\u1ea7n nh\u1edb r\u1eb1ng gi\u00e1 tr\u1ecb trung b\u00ecnh thu \u0111\u01b0\u1ee3c t\u1eeb c\u00e1c th\u1eed nghi\u1ec7m tr\u00ean l\u00e0 \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng; v\u1eadt ch\u1ee9a nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ea5y ra t\u1eeb b\u1ec3 n\u01b0\u1edbc n\u00f3ng. <\/p>\n

    Nh\u01b0 \u0111\u00e3 th\u1ea5y trong th\u00ed nghi\u1ec7m tr\u00ean, ph\u00e2n lo\u1ea1i \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch th\u1eed nghi\u1ec7m tr\u00ean c\u00e1c m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng, v\u00e0 trong c\u00e1c th\u1eed nghi\u1ec7m n\u00e0y, k\u00edch th\u01b0\u1edbc kim th\u1eed c\u00e0ng nh\u1ecf trong m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng th\u00ec gi\u00e1 tr\u1ecb thu \u0111\u01b0\u1ee3c c\u00e0ng l\u1edbn. Gi\u00e1 tr\u1ecb thu \u0111\u01b0\u1ee3c c\u00e0ng nh\u1ecf th\u00ec nh\u1ef1a \u0111\u01b0\u1eddng c\u00e0ng b\u1ec1n v\u00e0 ph\u00f9 h\u1ee3p cho c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9 \u1edf v\u00f9ng nhi\u1ec7t \u0111\u1edbi; nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u cao c\u00f3 t\u00ednh ch\u1ea5t nhi\u1ec7t d\u1ebbo, m\u1ec1m \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u1ee9ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u1ed9c \u0111\u00e1o v\u1ec1 \u0111\u1ed9 nh\u1edbt-nhi\u1ec7t \u0111\u1ed9 t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 b\u00e1m d\u00ednh v\u00e0 \u0111\u1ed9 b\u1ec1n trong hi\u1ec7u su\u1ea5t c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng. <\/p>\n

    C\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng n\u00e0y \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 Bitumen 60\/70, Bitumen 80\/100, Bitumen 85\/100, Bitumen 40\/50 v\u00e0 Bitumen 30\/40, v\u00e0 \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean. Nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u th\u1ea5p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng v\u00f9ng kh\u00ed h\u1eadu n\u00f3ng, c\u00f2n nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng v\u00f9ng kh\u00ed h\u1eadu l\u1ea1nh. <\/p>\n

    Nhi\u1ec1u c\u00f4ng ty \u0111\u00e3 s\u1ea3n xu\u1ea5t m\u00e1y ki\u1ec3m tra \u0111\u1ed9 th\u1ea5m nh\u1ef1a \u0111\u01b0\u1eddng, m\u1ed9t m\u00f4 h\u00ecnh trong s\u1ed1 \u0111\u00f3 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u00ean d\u01b0\u1edbi.<\/p>\n

    Thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng:<\/p>\n

    \"Th\u1eed<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 40\/60<\/strong><\/p>\n

    M\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng; nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 th\u1ea5m 40\/60 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 th\u1ea5m ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf EN12591-2009 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng; n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 40\/50<\/strong><\/p>\n

    M\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng; nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u 40\/50 l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n ASTMD946-09 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9 \u1edf c\u00e1c khu v\u1ef1c \u1ea5m \u00e1p.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 50\/70<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 50\/70 l\u00e0 lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n ch\u00e2u \u00c2u EN12591-2009, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 pha ch\u1ebf nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng v\u00e0 \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 nhi\u1ec1u nh\u1ea5t \u1edf c\u00e1c khu v\u1ef1c c\u00f3 kh\u00ed h\u1eadu n\u00f3ng.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 60\/70<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 60\/70 l\u00e0 lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ASTMD946-09, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c chu\u1ea9n b\u1ecb nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9 \u1edf nh\u1eefng v\u00f9ng c\u00f3 th\u1eddi ti\u1ebft \u00f4n h\u00f2a. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c chu\u1ea9n b\u1ecb nh\u1ef1a \u0111\u01b0\u1eddng nh\u0169 h\u00f3a v\u00e0 nh\u1ef1a \u0111\u01b0\u1eddng h\u00f2a tan. <\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 60\/90<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 60\/90 l\u00e0 lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u theo ti\u00eau chu\u1ea9n ch\u00e2u \u00c2u, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 pha ch\u1ebf nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9 \u1edf c\u00e1c v\u00f9ng kh\u00ed h\u1eadu \u00f4n \u0111\u1edbi.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 70\/100<\/strong><\/p>\n

    70\/100 l\u00e0 lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 th\u1ea5m \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf EN12591-2009, d\u00f9ng \u0111\u1ec3 pha ch\u1ebf nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9 \u1edf c\u00e1c v\u00f9ng kh\u00ed h\u1eadu l\u1ea1nh.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 80\/100<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 80\/100 l\u00e0 lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf; n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng, v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c v\u00f9ng l\u1ea1nh v\u00e0 trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 th\u1ea5m 80\/100 c\u00f3 \u0111\u1eb7c t\u00ednh nhi\u1ec7t d\u1ebbo v\u00e0 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u1ef1a t\u1ed5ng h\u1ee3p, n\u00f3 tr\u1edf n\u00ean m\u1ec1m h\u01a1n khi \u0111\u01b0\u1ee3c nung n\u00f3ng v\u00e0 c\u1ee9ng l\u1ea1i khi ngu\u1ed9i; n\u00f3 c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u 80-100 v\u00e0 \u0111\u1ed9 nh\u1edbt r\u1ea5t cao.<\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng 85\/100<\/strong><\/p>\n

    85\/100 l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u00f3 \u0111\u1ed9 xuy\u00ean th\u1ea5u theo ti\u00eau chu\u1ea9n ASTMD946-09; n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng, v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng v\u00f9ng r\u1ea5t l\u1ea1nh v\u00e0 trong c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng b\u1ed9.<\/p>\n

    GI\u1ea2M L\u01af\u1ee2NG NH\u1ef0A \u0110\u01af\u1edcNG<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng pha lo\u00e3ng l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng kh\u00e1c \u0111\u01b0\u1ee3c thu \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh tinh ch\u1ebf d\u1ea7u th\u00f4 v\u00e0 k\u1ebft h\u1ee3p nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u00f3 v\u1edbi c\u00e1c dung m\u00f4i nh\u01b0 x\u0103ng, d\u1ea7u diesel v\u00e0 d\u1ea7u h\u1ecfa trong nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u. Nh\u1ef1a \u0111\u01b0\u1eddng pha lo\u00e3ng thu \u0111\u01b0\u1ee3c \u1edf d\u1ea1ng l\u1ecfng v\u00e0 c\u00f3 \u0111\u1ed9 nh\u1edbt th\u1ea5p h\u01a1n. Lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng n\u00e0y \u1edf d\u1ea1ng l\u1ecfng \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng. <\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng pha lo\u00e3ng th\u00edch h\u1ee3p cho c\u00e1c khu v\u1ef1c l\u1ea1nh v\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i gia nhi\u1ec7t tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/p>\n

    <\/strong>NH\u0168 T\u01af\u01a0NG BITUM<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng nh\u0169 t\u01b0\u01a1ng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1eeb \u200b\u200bh\u1ed7n h\u1ee3p 60% nh\u1ef1a \u0111\u01b0\u1eddng v\u00e0 40% n\u01b0\u1edbc, v\u00e0 gi\u1ed1ng nh\u01b0 nh\u1ef1a \u0111\u01b0\u1eddng pha lo\u00e3ng, n\u00f3 kh\u00f4ng \u0111\u1ed9c h\u1ea1i, nh\u01b0ng l\u1ea1i kh\u00f4ng g\u00e2y h\u1ea1i cho m\u00f4i tr\u01b0\u1eddng v\u00e0 con ng\u01b0\u1eddi, kh\u00f4ng c\u1ea7n gia nhi\u1ec7t khi s\u1eed d\u1ee5ng, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc v\u00e0 bay h\u01a1i khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, r\u1ea5t d\u1ec5 v\u1eadn chuy\u1ec3n, v\u00e0 v\u00ec l\u00fd do \u0111\u00f3, n\u00f3 gi\u00fap gi\u1ea3m chi ph\u00ed v\u00e0 x\u00e9t v\u1ec1 m\u1eb7t kinh t\u1ebf, n\u00f3 r\u1ea5t ph\u1ea3i ch\u0103ng. <\/p>\n

    NH\u1ef0A \u0110\u01af\u1edcNG OXY H\u00d3A<\/strong><\/p>\n

    Nh\u1ef1a \u0111\u01b0\u1eddng b\u1ecb oxy h\u00f3a \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh th\u1ed5i kh\u00f4ng kh\u00ed v\u00e0o nh\u1ef1a \u0111\u01b0\u1eddng t\u1ea1i nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u.<\/p>\n

    Vi\u1ec7c th\u1ed5i kh\u00ed v\u00e0o nh\u1ef1a \u0111\u01b0\u1eddng l\u00e0m t\u0103ng t\u00ednh ch\u1ea5t \u0111\u00e0n h\u1ed3i c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi t\u0103ng \u0111\u1ed9 d\u1ebbo, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc. Lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00f4ng nghi\u1ec7p, v\u00e0 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn \u0111\u1ec3 c\u00e1ch nhi\u1ec7t v\u00e0 ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 cho \u0111\u01b0\u1eddng \u1ed1ng, s\u00e0n nh\u00e0, v\u00e0 c\u00e1ch nhi\u1ec7t tr\u1ea7n v\u00e0 s\u00e0n nh\u00e0 t\u1eafm, nh\u00e0 b\u1ebfp, c\u0169ng nh\u01b0 trong ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u01a1n. <\/p>\n

    Th\u1eed nghi\u1ec7m \u0111i\u1ec3m m\u1ec1m c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng<\/strong><\/p>\n

    Trong th\u1eed nghi\u1ec7m n\u00e0y, ch\u00fang ta x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 m\u1ec1m t\u1ed1i \u0111a v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u1ea1t \u0111\u1ebfn \u0111\u1ed9 m\u1ec1m t\u1ed1i \u0111a, v\u00e0 th\u00f4ng th\u01b0\u1eddng, th\u1eed nghi\u1ec7m n\u00e0y n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n 4 gi\u1edd sau khi l\u1ea5y m\u1eabu.<\/p>\n

    C\u00e1c thi\u1ebft b\u1ecb c\u1ea7n thi\u1ebft cho b\u00e0i ki\u1ec3m tra n\u00e0y bao g\u1ed3m:<\/p>\n

      \n
    1. Khu\u00f4n \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 l\u1ea5y m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng theo ti\u00eau chu\u1ea9n<\/li>\n
    2. M\u1ee1 \u0111\u1eb7c bi\u1ec7t<\/li>\n
    3. C\u1ed1c th\u1ee7y tinh c\u00f3 dung t\u00edch 600 ml \u0111\u1ef1ng n\u01b0\u1edbc.<\/li>\n
    4. N\u01b0\u1edbc c\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 5 \u0111\u1ed9 C<\/li>\n
    5. \u0110\u00e1 l\u1ea1nh khi c\u1ea7n thi\u1ebft<\/li>\n
    6. K\u1eb9p khu\u00f4n<\/li>\n
    7. B\u1ed9 tr\u1ed9n gia nhi\u1ec7t \u0111\u1ec3 l\u00e0m n\u00f3ng<\/li>\n<\/ol>\n

      \u0110\u1ea7u ti\u00ean, t\u00f4i ph\u1ee7 m\u1ed9t l\u1edbp m\u1ee1 \u0111\u1eb7c bi\u1ec7t v\u00e0o b\u00ean trong khu\u00f4n, sau \u0111\u00f3 \u0111\u1ed5 m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p v\u00e0o khu\u00f4n v\u00e0 ch\u1edd 30 ph\u00fat cho \u0111\u1ebfn khi nh\u1ef1a \u0111\u01b0\u1eddng b\u00ean trong khu\u00f4n ngu\u1ed9i xu\u1ed1ng nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m. Ti\u1ebfp theo, \u0111\u1ed5 500 cc n\u01b0\u1edbc c\u1ea5t \u1edf 5 \u0111\u1ed9 C v\u00e0o c\u1ed1c th\u1ee7y tinh, k\u1eb9p khu\u00f4n v\u00e0 nhi\u1ec7t k\u1ebf chuy\u00ean d\u1ee5ng. \u0110\u1eb7t nhi\u1ec7t k\u1ebf m\u1ec1m v\u00e0o trong c\u1ed1c v\u00e0 th\u00eam \u0111\u00e1 \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc c\u1ea5t xu\u1ed1ng 5 \u0111\u1ed9 C. Sau \u0111\u00f3, \u0111\u1eb7t khu\u00f4n ch\u1ee9a m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng l\u00ean k\u1eb9p, \u0111\u1eb7t c\u00e1c k\u1eb9p gi\u1eef m\u1eabu v\u00e0 vi\u00ean n\u00e9n l\u00ean tr\u00ean m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng, v\u00e0 ch\u1edd 15 ph\u00fat cho \u0111\u1ebfn khi nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh \u1edf m\u1ee9c 5 \u0111\u1ed9 C. <\/p>\n

      Sau \u0111\u00f3, ch\u00fang ta \u0111\u1eb7t b\u00ecnh th\u1ee7y tinh l\u00ean b\u1ebfp c\u00f3 g\u1eafn m\u00e1y khu\u1ea5y v\u00e0 b\u1eaft \u0111\u1ea7u \u0111un n\u00f3ng b\u00ecnh sao cho nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng th\u00eam 5 \u0111\u1ed9 C m\u1ed7i ph\u00fat. Ch\u00fang ta ti\u1ebfp t\u1ee5c qu\u00e1 tr\u00ecnh \u0111un n\u00f3ng n\u01b0\u1edbc cho \u0111\u1ebfn khi nh\u1ef1a \u0111\u01b0\u1eddng trong khu\u00f4n m\u1ec1m ho\u00e0n to\u00e0n v\u00e0 c\u00e1c vi\u00ean bi kim lo\u1ea1i tr\u00ean nh\u1ef1a \u0111\u01b0\u1eddng ch\u1ea1m \u0111\u00e1y khu\u00f4n. Ngay khi c\u00e1c vi\u00ean bi ch\u1ea1m \u0111\u00e1y khu\u00f4n, ch\u00fang ta ghi l\u1ea1i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u01b0\u1edbc v\u00e0 g\u1ecdi nhi\u1ec7t \u0111\u1ed9 n\u00e0y l\u00e0 nhi\u1ec7t \u0111\u1ed9 h\u00f3a m\u1ec1m<\/strong> c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng. <\/p>\n

      \"ki\u1ec3m<\/p>\n

      Ph\u01b0\u01a1ng ph\u00e1p th\u1eed \u0111i\u1ec3m ch\u1edbp ch\u00e1y c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng<\/strong><\/p>\n

      L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u00fang ta bi\u1ebft nh\u1ef1a \u0111\u01b0\u1eddng l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m d\u1ec5 ch\u00e1y x\u00e9t v\u1ec1 m\u1eb7t an to\u00e0n v\u00e0 b\u1ea3o v\u1ec7 t\u00ednh m\u1ea1ng c\u1ee7a nh\u1eefng ng\u01b0\u1eddi l\u00e0m vi\u1ec7c v\u1edbi n\u00f3, c\u0169ng nh\u01b0 b\u1ea3o v\u1ec7 v\u00e0 ng\u0103n ng\u1eeba kh\u1ea3 n\u0103ng ti\u1ebfp x\u00fac v\u1edbi nh\u1ef1a \u0111\u01b0\u1eddng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0 nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t nh\u1ef1a \u0111\u01b0\u1eddng, b\u1ec3 ch\u1ee9a nh\u1ef1a \u0111\u01b0\u1eddng v\u00e0 xe ch\u1edf nh\u1ef1a \u0111\u01b0\u1eddng; C\u1ea7n ph\u1ea3i bi\u1ebft \u0111i\u1ec3m b\u1eaft l\u1eeda v\u00e0 m\u1ee9c \u0111\u1ed9 ch\u00e1y c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, v\u00e0 \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng b\u1eb1ng c\u00e1ch ti\u1ebfn h\u00e0nh c\u00e1c th\u1eed nghi\u1ec7m tr\u00ean m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh nh\u1eefng \u0111i\u1ec1u ch\u00fang ta \u0111\u00e3 \u0111\u1ec1 c\u1eadp; May m\u1eafn thay, ng\u00e0y nay v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a khoa h\u1ecdc; Nhi\u1ec1u c\u00f4ng ty \u0111\u00e3 b\u1eaft \u0111\u1ea7u s\u1ea3n xu\u1ea5t c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i trong l\u0129nh v\u1ef1c n\u00e0y.<\/p>\n

      N\u1ebfu m\u1eabu nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1ecb v\u00f3n c\u1ee5c ho\u1eb7c h\u01a1i ch\u1ea3y, h\u00e3y \u0111un n\u00f3ng \u0111\u1ebfn 176 \u0111\u1ed9 C cho \u0111\u1ebfn khi nh\u1ef1a \u0111\u01b0\u1eddng tan ch\u1ea3y ho\u00e0n to\u00e0n, sau \u0111\u00f3 \u0111\u1ed5 m\u1ed9t \u00edt v\u00e0o c\u1ed1c th\u1eed nghi\u1ec7m c\u1ee7a thi\u1ebft b\u1ecb \u0111\u1ebfn v\u1ea1ch \u0111\u00e1nh d\u1ea5u. N\u1ebfu c\u00f3 b\u1ecdt kh\u00ed tr\u00ean b\u1ec1 m\u1eb7t nh\u1ef1a \u0111\u01b0\u1eddng b\u00ean trong c\u1ed1c,<\/p>\n

      L\u1ea5y ch\u00fang ra. V\u00e0 ch\u00fang ta ch\u1edd cho l\u1edbp k\u00ednh b\u00ean trong c\u1ed1c ngu\u1ed9i xu\u1ed1ng nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng c\u1ee7a ph\u00f2ng th\u00ed nghi\u1ec7m; Sau khi nh\u1ef1a \u0111\u01b0\u1eddng ngu\u1ed9i, ti\u1ebfn h\u00e0nh ki\u1ec3m tra b\u1eb1ng m\u00e1y th\u1eed. <\/p>\n

      Ch\u00fang ta \u0111i\u1ec1u ch\u1ec9nh n\u00fat \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb sao cho nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean 7,16 \u0111\u1ed9 C m\u1ed7i ph\u00fat v\u00e0 ti\u1ebfp t\u1ee5c nh\u01b0 v\u1eady cho \u0111\u1ebfn khi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t 56 \u0111\u1ed9 C; Sau \u0111\u00f3 gi\u1ea3m t\u1ed1c \u0111\u1ed9 gia nhi\u1ec7t \u0111\u1ec3 nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng l\u00ean 5 \u0111\u1ed9 C m\u1ed7i ph\u00fat, v\u00e0 c\u1ee9 m\u1ed7i 3 \u0111\u1ed9 nh\u1ef1a \u0111\u01b0\u1eddng n\u00f3ng l\u00ean, ch\u00fang ta l\u1ea1i \u0111\u01b0a ng\u1ecdn l\u1eeda \u0111i qua b\u1ec1 m\u1eb7t nh\u1ef1a \u0111\u01b0\u1eddng m\u1ed9t l\u1ea7n m\u1ed7i gi\u00e2y. V\u00e0 ch\u00fang ta ti\u1ebfp t\u1ee5c c\u00e1c b\u01b0\u1edbc gia nhi\u1ec7t theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1 v\u00e0 \u0111\u01b0a ng\u1ecdn l\u1eeda \u0111i qua b\u1ec1 m\u1eb7t nh\u1ef1a \u0111\u01b0\u1eddng c\u1ee9 m\u1ed7i 3 \u0111\u1ed9 cho \u0111\u1ebfn khi ng\u1ecdn l\u1eeda xu\u1ea5t hi\u1ec7n t\u1ea1i m\u1ed9t \u0111i\u1ec3m tr\u00ean b\u1ec1 m\u1eb7t nh\u1ef1a \u0111\u01b0\u1eddng; C\u1ea7n l\u01b0u \u00fd r\u1eb1ng ng\u1ecdn l\u1eeda xu\u1ea5t hi\u1ec7n n\u00e0y ch\u1ec9 l\u00e0 t\u1ea1m th\u1eddi v\u00e0 ch\u00fang ta ghi nh\u1edb nhi\u1ec7t \u0111\u1ed9 n\u00e0y v\u00ec \u0111\u00e2y l\u00e0 \u0111i\u1ec3m b\u1eaft l\u1eeda c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng; B\u00e2y gi\u1edd n\u1ebfu ti\u1ebfp t\u1ee5c gia nhi\u1ec7t, h\u00e3y tr\u1ea3i qua giai \u0111o\u1ea1n n\u00e0y v\u00e0 \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 b\u1eaft l\u1eeda c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, n\u01a1i nh\u1ef1a \u0111\u01b0\u1eddng b\u00ean trong c\u1ed1c b\u1eaft \u0111\u1ea7u ch\u00e1y, v\u00e0 nhi\u1ec7t \u0111\u1ed9 n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 nhi\u1ec7t \u0111\u1ed9 b\u1eaft l\u1eeda c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng. \u0110\u1ec3 ng\u0103n thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m b\u1eaft l\u1eeda, \u1edf giai \u0111o\u1ea1n n\u00e0y, ch\u00fang ta ph\u1ea3i \u0111\u1eady n\u1eafp c\u1ed1c th\u1eed nghi\u1ec7m \u0111\u1ec3 ng\u0103n oxy x\u00e2m nh\u1eadp v\u00e0o, nh\u1edd \u0111\u00f3 ng\u1ecdn l\u1eeda s\u1ebd b\u1ecb d\u1eadp t\u1eaft. V\u00e0 nh\u01b0 c\u00f3 th\u1ec3 th\u1ea5y t\u1eeb qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m b\u1eaft l\u1eeda v\u00e0 nhi\u1ec7t \u0111\u1ed9 b\u1eaft l\u1eeda c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng l\u00e0 kh\u00e1c nhau, \u0111i\u1ec1u n\u00e0y c\u0169ng \u00e1p d\u1ee5ng cho c\u00e1c s\u1ea3n ph\u1ea9m d\u1ea7u m\u1ecf kh\u00e1c nh\u01b0 benzen, x\u0103ng, d\u1ea7u h\u1ecfa v\u00e0 d\u1ea7u m\u1ee1. <\/p>\n

      Ngo\u00e0i ra, \u0111\u1ec3 l\u00e0m quen v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111i\u1ec3m ch\u1edbp ch\u00e1y c\u1ee7a nh\u1ef1a \u0111\u01b0\u1eddng, ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u00ednh k\u00e8m m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 \u0111\u1ec3 b\u1ea1n tham kh\u1ea3o:<\/p>\n

      \"Th\u1eed<\/p>\n

      Th\u1eed nghi\u1ec7m \u0111i\u1ec3m nh\u1ef1a \u0111\u01b0\u1eddng<\/p>\n

      M\u1ed9t trong nh\u1eefng th\u1eed nghi\u1ec7m quan tr\u1ecdng h\u01a1n \u0111\u1ed1i v\u1edbi nh\u1ef1a \u0111\u01b0\u1eddng l\u00e0 Th\u1eed nghi\u1ec7m t\u1ea1i ch\u1ed7<\/a> , ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i th\u00edch chi ti\u1ebft h\u01a1n trong b\u00e0i vi\u1ebft ti\u1ebfp theo v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y.<\/p>\n<\/div>

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      \n <\/span>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":17618,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1125,992],"tags":[1327],"class_list":["post-20836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet","category-nhua-duong","tag-cac-loai-nhua-duong"],"yoast_head":"\nC\u00c1C LO\u1ea0I NH\u1ef0A \u0110\u01af\u1edcNG c\u1ee7a C\u00f4ng ty H\u00f3a d\u1ea7u Aras<\/title>\n<meta name=\"description\" content=\"C\u00e1c lo\u1ea1i nh\u1ef1a \u0111\u01b0\u1eddng c\u1ee7a Aras Petrochemical s\u1ebd kh\u00e1c nhau v\u00e0 c\u00f3 c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ed9 nh\u1edbt, \u0111\u1ed9 xuy\u00ean th\u1ea5u v\u00e0 \u0111i\u1ec3m h\u00f3a m\u1ec1m.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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