{"id":7842,"date":"2021-06-07T04:53:07","date_gmt":"2021-06-07T04:53:07","guid":{"rendered":"https:\/\/thuvienxaydung.com.vn\/?p=7842"},"modified":"2021-06-07T04:53:48","modified_gmt":"2021-06-07T04:53:48","slug":"tieu-chuan-quoc-gia-tcvn-62602009-xi-mang-pooc-lang-hon-hop","status":"publish","type":"post","link":"https:\/\/tailieuxaydung.net\/?p=7842","title":{"rendered":"Ti\u00eau chu\u1ea9n Qu\u1ed1c gia TCVN 6260:2009 Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p"},"content":{"rendered":"
\n

TI\u00caU CHU\u1ea8N QU\u1ed0C GIA<\/strong><\/p>\n

TCVN 6260 : 2009<\/strong><\/p>\n

XI M\u0102NG PO\u00d3C L\u0102NG H\u1ed6N H\u1ee2P \u2013 Y\u00caU C\u1ea6U K\u1ef8 THU\u1eacT<\/strong><\/p>\n

Portland blended cement \u2013 Specifications<\/em><\/p>\n

 <\/p>\n

 <\/p>\n

L\u1eddi n\u00f3i \u0111\u1ea7u<\/strong><\/span><\/h2>\n

TCVN 6260 : 2009<\/strong>\u00a0thay th\u1ebf\u00a0TCVN 6260 : 1997.<\/strong><\/p>\n

TCVN 6260 : 2009<\/strong>\u00a0do Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng \u2013 B\u1ed9 X\u00e2y d\u1ef1ng bi\u00ean so\u1ea1n, B\u1ed9 X\u00e2y d\u1ef1ng \u0111\u1ec1 ngh\u1ecb, T\u1ed5ng c\u1ee5c Ti\u00eau chu\u1ea9n \u0110o l\u01b0\u1eddng Ch\u1ea5t l\u01b0\u1ee3ng th\u1ea9m \u0111\u1ecbnh, B\u1ed9 Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 c\u00f4ng b\u1ed1.<\/p>\n

 <\/p>\n

 <\/p>\n

1. Ph\u1ea1m vi \u00e1p d\u1ee5ng<\/strong><\/span><\/h2>\n

Ti\u00eau chu\u1ea9n n\u00e0y \u00e1p d\u1ee5ng cho lo\u1ea1i xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p th\u00f4ng d\u1ee5ng.<\/p>\n

2. T\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn<\/strong><\/span><\/h2>\n

C\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn sau l\u00e0 c\u1ea7n thi\u1ebft khi \u00e1p d\u1ee5ng ti\u00eau chu\u1ea9n n\u00e0y. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn c\u00f3 ghi n\u0103m c\u00f4ng b\u1ed1 th\u00ec \u00e1p d\u1ee5ng b\u1ea3n \u0111\u01b0\u1ee3c n\u00eau. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn kh\u00f4ng ghi n\u0103m c\u00f4ng b\u1ed1 th\u00ec \u00e1p d\u1ee5ng phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t, bao g\u1ed3m c\u1ea3 b\u1ea3n s\u1eeda \u0111\u1ed5i (n\u1ebfu c\u00f3).<\/p>\n

TCVN 141 : 2008 Xi m\u0103ng \u2013 Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch h\u00f3a h\u1ecdc.<\/p>\n

TCVN 4030 : 2003 Xi m\u0103ng \u2013 Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 m\u1ecbn.<\/p>\n

TCVN 4787 : 2001 (EN 196-7 : 1989) Xi m\u0103ng \u2013 Ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu v\u00e0 chu\u1ea9n b\u1ecb m\u1eabu.<\/p>\n

TCVN 5438 : 2004 Xi m\u0103ng \u2013 Thu\u1eadt ng\u1eef \u0111\u1ecbnh ngh\u0129a.<\/p>\n

TCVN 5439 : 2004 Xi m\u0103ng \u2013 Ph\u00e2n lo\u1ea1i.<\/p>\n

TCVN 6016 : 1995 (ISO 679 : 1989) Xi m\u0103ng \u2013 Ph\u01b0\u01a1ng ph\u00e1p th\u1eed \u2013 X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n.<\/p>\n

TCVN 6017 : 1995 (ISO 9597 : 1989) Xi m\u0103ng \u2013 Ph\u01b0\u01a1ng ph\u00e1p th\u1eed \u2013 X\u00e1c \u0111\u1ecbnh th\u1eddi gian \u0111\u00f4ng k\u1ebft v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh.<\/p>\n

TCVN 6882 : 2001 Ph\u1ee5 gia kho\u00e1ng cho xi m\u0103ng.<\/p>\n

TCVN 7711 : 2007 Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p b\u1ec1n sun ph\u00e1t.<\/p>\n

TCXD 168 : 1989 Th\u1ea1ch cao d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng*.<\/p>\n

3. Quy \u0111\u1ecbnh chung<\/strong><\/span><\/h2>\n

3.1.\u00a0<\/strong>Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p th\u00f4ng d\u1ee5ng l\u00e0 ch\u1ea5t k\u1ebft d\u00ednh th\u1ee7y, \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch nghi\u1ec1n m\u1ecbn h\u1ed7p h\u1ee3p clanhke xi m\u0103ng po\u00f3c l\u0103ng v\u1edbi m\u1ed9t l\u01b0\u1ee3ng th\u1ea1ch cao c\u1ea7n thi\u1ebft v\u00e0 c\u00e1c ph\u1ee5 gia kho\u00e1ng, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u1ee5 gia c\u00f4ng ngh\u1ec7 (n\u1ebfu c\u1ea7n) trong qu\u00e1 tr\u00ecnh nghi\u1ec1n ho\u1eb7c b\u1eb1ng c\u00e1ch tr\u1ed9n \u0111\u1ec1u c\u00e1c ph\u1ee5 gia kho\u00e1ng \u0111\u00e3 nghi\u1ec1n m\u1ecbn v\u1edbi xi m\u0103ng po\u00f3c l\u0103ng.<\/p>\n

3.2.\u00a0<\/strong>Clanhke xi m\u0103ng po\u00f3c l\u0103ng d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p c\u00f3 h\u00e0m l\u01b0\u1ee3ng magie ox\u00edt (MgO) kh\u00f4ng l\u1edbn h\u01a1n 5 %.<\/p>\n

3.3.<\/strong>\u00a0Ph\u1ee5 gia kho\u00e1ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p ph\u1ea3i th\u1ecfa m\u00e3n c\u00e1c y\u00eau c\u1ea7u c\u1ee7a TCVN 6882 : 2001 v\u00e0 quy chu\u1ea9n s\u1eed d\u1ee5ng ph\u1ee5 gia trong s\u1ea3n xu\u1ea5t xi m\u0103ng.<\/p>\n

* C\u00e1c ti\u00eau chu\u1ea9n TCXD v\u00e0 TCN s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh TCVN ho\u1eb7c QCVN<\/p>\n

3.4.\u00a0<\/strong>Ph\u1ee5 gia c\u00f4ng ngh\u1ec7 g\u1ed3m c\u00e1c ch\u1ea5t c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh nghi\u1ec1n, v\u1eadn chuy\u1ec3n, \u0111\u00f3ng bao v\u00e0\/ho\u1eb7c b\u1ea3o qu\u1ea3n xi m\u0103ng nh\u01b0ng kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng x\u1ea5u t\u1edbi t\u00ednh ch\u1ea5t c\u1ee7a xi m\u0103ng, v\u1eefa v\u00e0 b\u00ea t\u00f4ng; h\u00e0m l\u01b0\u1ee3ng ph\u1ee5 gia c\u00f4ng ngh\u1ec7 trong xi m\u0103ng kh\u00f4ng l\u1edbn h\u01a1n 1 %.<\/p>\n

3.5.\u00a0<\/strong>T\u1ed5ng l\u01b0\u1ee3ng c\u00e1c ph\u1ee5 gia kho\u00e1ng (kh\u00f4ng k\u1ec3 th\u1ea1ch cao) trong xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p, t\u00ednh theo kh\u1ed1i l\u01b0\u1ee3ng xi m\u0103ng, kh\u00f4ng l\u1edbn h\u01a1n 40 %, trong \u0111\u00f3 ph\u1ee5 gia \u0111\u1ea7y kh\u00f4ng qu\u00e1 20 %.<\/p>\n

3.6.\u00a0<\/strong>Th\u1ea1ch cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng theo TCXD 168 : 89.<\/p>\n

3.7.<\/strong>\u00a0Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p g\u1ed3m ba m\u00e1c PCB30, PCB40 v\u00e0 PCB50, trong \u0111\u00f3:<\/p>\n

\u2013 PCB l\u00e0 k\u00fd hi\u1ec7u quy \u01b0\u1edbc cho xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p;<\/p>\n

\u2013 C\u00e1c tr\u1ecb s\u1ed1 30, 40, 50 l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n t\u1ed1i thi\u1ec3u m\u1eabu v\u1eefa chu\u1ea9n \u1edf tu\u1ed5i 28 ng\u00e0y \u0111\u00f3ng r\u1eafn, t\u00ednh b\u1eb1ng m\u1eb7t ph\u1eb3ng, x\u00e1c \u0111\u1ecbnh theo TCVN 6016:1995 (ISO 679 : 1989).<\/p>\n

4. Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt<\/strong><\/span><\/h2>\n

C\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong B\u1ea3ng 1.<\/p>\n

B\u1ea3ng 1 \u2013 C\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
C\u00e1c ch\u1ec9 ti\u00eau<\/strong><\/td>\nM\u1ee9c<\/strong><\/td>\n<\/tr>\n
PCB30<\/strong><\/td>\nPCB40<\/strong><\/td>\nPCB50<\/strong><\/td>\n<\/tr>\n
1. C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n, m\u1eb7t ph\u1eb3ng, kh\u00f4ng nh\u1ecf h\u01a1n: \u2013 3 ng\u00e0y \u00b1 45 min \u2013 28 ng\u00e0y \u00b1 8 h<\/td>\n14 30<\/td>\n18 40<\/td>\n22 50<\/td>\n<\/tr>\n
2. Th\u1eddi gian \u0111\u00f4ng k\u1ebft, min \u2013 b\u1eaft \u0111\u1ea7u, kh\u00f4ng nh\u1ecf h\u01a1n \u2013 k\u1ebft th\u00fac, kh\u00f4ng l\u1edbn h\u01a1n<\/td>\n45 420<\/td>\n<\/tr>\n
3. \u0110\u1ed9 m\u1ecbn, x\u00e1c \u0111\u1ecbnh theo: \u2013 ph\u1ea7n c\u00f2n l\u1ea1i tr\u00ean s\u00e0ng k\u00edch th\u01b0\u1edbc l\u1ed7 0,09 mm, %, kh\u00f4ng l\u1edbn h\u01a1n \u2013 b\u1ec1 m\u1eb7t ri\u00eang, x\u00e1c \u0111\u1ecbnh theo ph\u01b0\u01a1ng ph\u00e1p Blaine, cm2<\/sup>\/g, kh\u00f4ng nh\u1ecf h\u01a1n<\/td>\n10 2 800<\/td>\n<\/tr>\n
4. \u0110\u1ed9 \u1ea9m \u1ed5n \u0111\u1ecbnh th\u1ec3 t\u00edch, x\u00e1c \u0111\u1ecbnh theo ph\u01b0\u01a1ng ph\u00e1p Le Chatelier, mm, kh\u00f4ng l\u1edbn h\u01a1n<\/td>\n10<\/td>\n<\/tr>\n
5. H\u00e0m l\u01b0\u1ee3ng anhydric sunphuric (SO3<\/sub>), %, kh\u00f4ng l\u1edbn h\u01a1n<\/td>\n3,5<\/td>\n<\/tr>\n
6. \u0110\u1ed9 n\u1edf autoclave1)<\/sup>, %, kh\u00f4ng l\u1edbn h\u01a1n<\/td>\n0,8<\/td>\n<\/tr>\n
CH\u00da TH\u00cdCH:\u00a01)<\/sup>\u00c1p d\u1ee5ng khi c\u00f3 y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

5. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/strong><\/span><\/h2>\n

5.1.\u00a0<\/strong>L\u1ea5y m\u1eabu v\u00e0 chu\u1ea9n b\u1ecb m\u1eabu th\u1eed theo TCVN 4787 : 2001 (EN 196-7 : 1989).<\/p>\n

5.2.\u00a0<\/strong>C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n x\u00e1c \u0111\u1ecbnh theo TCVN 6016 : 1995 (ISO 679 : 1989).<\/p>\n

5.3.<\/strong>\u00a0\u0110\u1ed9 m\u1ecbn x\u00e1c \u0111\u1ecbnh theo TCVN 4030 : 2003.<\/p>\n

5.4.\u00a0<\/strong>Th\u1eddi gian \u0111\u00f4ng k\u1ebft v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh th\u1ec3 t\u00edch x\u00e1c \u0111\u1ecbnh theo TCVN 6017 : 1995 (ISO 9597 : 1989).<\/p>\n

5.5.<\/strong>\u00a0H\u00e0m l\u01b0\u1ee3ng SO3<\/sub>\u00a0x\u00e1c \u0111\u1ecbnh theo TCVN 141 : 2008.<\/p>\n

5.6.<\/strong>\u00a0\u0110\u1ed9 n\u1edf autoclave \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo TCVN 7711 : 2007.<\/p>\n

6. Ghi nh\u00e3n, bao g\u00f3i, v\u1eadn chuy\u1ec3n v\u00e0 b\u1ea3o qu\u1ea3n<\/strong><\/span><\/h2>\n

6.1. Ghi nh\u00e3n<\/strong><\/span><\/h3>\n

6.1.1.\u00a0<\/strong>Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p khi xu\u1ea5t x\u01b0\u1edfng \u1edf d\u1ea1ng r\u1eddi ho\u1eb7c \u0111\u00f3ng bao ph\u1ea3i c\u00f3 t\u00e0i li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng k\u00e8m theo v\u1edbi n\u1ed9i dung:<\/p>\n

\u2013 t\u00ean c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t;<\/p>\n

\u2013 t\u00ean v\u00e0 m\u00e1c xi m\u0103ng theo ti\u00eau chu\u1ea9n n\u00e0y;<\/p>\n

\u2013 gi\u00e1 tr\u1ecb c\u00e1c m\u1ee9c ch\u1ec9 ti\u00eau theo \u0110i\u1ec1u 4 c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y;<\/p>\n

\u2013 kh\u1ed1i l\u01b0\u1ee3ng xi m\u0103ng xu\u1ea5t x\u01b0\u1edfng v\u00e0 s\u1ed1 hi\u1ec7u l\u00f4;<\/p>\n

\u2013 ng\u00e0y, th\u00e1ng, n\u0103m xu\u1ea5t x\u01b0\u1edfng.<\/p>\n

6.1.2.<\/strong>\u00a0Tr\u00ean v\u1ecf bao xi m\u0103ng ngo\u00e0i nh\u00e3n hi\u1ec7u \u0111\u00e3 \u0111\u0103ng k\u00fd, c\u1ea7n ghi r\u00f5:<\/p>\n

\u2013 t\u00ean v\u00e0 m\u00e1c xi m\u0103ng theo ti\u00eau chu\u1ea9n n\u00e0y;<\/p>\n

\u2013 t\u00ean c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t;<\/p>\n

\u2013 kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh c\u1ee7a bao;<\/p>\n

\u2013 th\u00e1ng, n\u0103m s\u1ea3n xu\u1ea5t;<\/p>\n

\u2013 h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng v\u00e0 b\u1ea3o qu\u1ea3n;<\/p>\n

\u2013 s\u1ed1 hi\u1ec7u l\u00f4 s\u1ea3n xu\u1ea5t;<\/p>\n

\u2013 vi\u1ec7n d\u1eabn ti\u00eau chu\u1ea9n n\u00e0y.<\/p>\n

6.2. Bao g\u00f3i<\/strong><\/span><\/h3>\n

6.2.1.<\/strong>\u00a0Bao \u0111\u1ef1ng xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p \u0111\u1ea3m b\u1ea3o kh\u00f4ng l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng xi m\u0103ng v\u00e0 kh\u00f4ng b\u1ecb r\u00e1ch v\u1ee1 khi v\u1eadn chuy\u1ec3n v\u00e0 b\u1ea3o qu\u1ea3n.<\/p>\n

6.2.2.<\/strong>\u00a0Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh cho m\u1ed7i bao xi m\u0103ng l\u00e0 (50 \u00b1 0,5) kg ho\u1eb7c kh\u1ed1i l\u01b0\u1ee3ng theo th\u1ecfa thu\u1eadn v\u1edbi kh\u00e1ch h\u00e0ng nh\u01b0ng dung sai ph\u1ea3i theo quy \u0111\u1ecbnh hi\u1ec7n h\u00e0nh.<\/p>\n

6.3. V\u1eadn chuy\u1ec3n<\/strong><\/span><\/h3>\n

6.3.1.\u00a0<\/strong>Kh\u00f4ng \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p chung v\u1edbi c\u00e1c lo\u1ea1i h\u00e0ng h\u00f3a g\u00e2y \u1ea3nh h\u01b0\u1edfng x\u1ea5u t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a xi m\u0103ng.<\/p>\n

6.3.2.<\/strong>\u00a0Xi m\u0103ng bao \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n v\u1eadn t\u1ea3i c\u00f3 che ch\u1eafn ch\u1ed1ng m\u01b0a v\u00e0 \u1ea9m \u01b0\u1edbt.<\/p>\n

6.3.3.\u00a0<\/strong>Xi m\u0103ng r\u1eddi \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n b\u1eb1ng ph\u01b0\u01a1ng ti\u1ec7n chuy\u00ean d\u1ee5ng.<\/p>\n

6.4. B\u1ea3o qu\u1ea3n<\/strong><\/span><\/h3>\n

6.4.1.\u00a0<\/strong>Kho ch\u1ee9a xi m\u0103ng bao ph\u1ea3i \u0111\u1ea3m b\u1ea3o kh\u00f4, s\u1ea1ch, n\u1ec1n cao, c\u00f3 t\u01b0\u1eddng bao v\u00e0 m\u00e1i che ch\u1eafc ch\u1eafn, c\u00f3 l\u1ed1i cho xe ra v\u00e0o xu\u1ea5t nh\u1eadp d\u1ec5 d\u00e0ng. C\u00e1c bao xi m\u0103ng kh\u00f4ng \u0111\u01b0\u1ee3c x\u1ebfp cao qu\u00e1 10 bao, ph\u1ea3i c\u00e1ch t\u01b0\u1eddng \u00edt nh\u1ea5t 20 cm v\u00e0 ri\u00eang theo t\u1eebng l\u00f4.<\/p>\n

6.4.2.<\/strong>\u00a0Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p ph\u1ea3i b\u1ea3o h\u00e0nh ch\u1ea5t l\u01b0\u1ee3ng trong th\u1eddi gian 60 ng\u00e0y k\u1ec3 t\u1eeb ng\u00e0y xu\u1ea5t x\u01b0\u1edfng.<\/p>\n<\/div>\n

<\/center>ISOQ cung c\u1ea5p d\u1ecbch v\u1ee5 t\u01b0 v\u1ea5n ch\u1ee9ng nh\u1eadn h\u1ee3p chu\u1ea9n Xi m\u0103ng po\u00f3c l\u0103ng h\u1ed7n h\u1ee3p theo TCVN 6260 : 2009 v\u00e0 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 doanh nghi\u1ec7p c\u00f4ng b\u1ed1 h\u1ee3p chu\u1ea9n t\u1ea1i Chi c\u1ee5c ti\u00eau chu\u1ea9n \u0111o l\u01b0\u1eddng ch\u1ea5t l\u01b0\u1ee3ng.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

TI\u00caU CHU\u1ea8N QU\u1ed0C GIA TCVN 6260 : 2009 XI M\u0102NG PO\u00d3C L\u0102NG H\u1ed6N H\u1ee2P \u2013 Y\u00caU C\u1ea6U K\u1ef8 THU\u1eacT Portland blended cement \u2013 Specifications     L\u1eddi n\u00f3i \u0111\u1ea7u TCVN 6260 : 2009\u00a0thay th\u1ebf\u00a0TCVN 6260 : 1997. TCVN 6260 : 2009\u00a0do Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng \u2013 B\u1ed9 X\u00e2y d\u1ef1ng bi\u00ean so\u1ea1n, B\u1ed9 X\u00e2y d\u1ef1ng…<\/p>\n","protected":false},"author":1,"featured_media":7844,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[349],"class_list":["post-7842","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tieu-chuan-xay-dung","tag-tcvn-6260-2009"],"_links":{"self":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7842"}],"version-history":[{"count":1,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7842\/revisions"}],"predecessor-version":[{"id":7843,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7842\/revisions\/7843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/media\/7844"}],"wp:attachment":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}