{"id":9679,"date":"2025-11-03T16:30:18","date_gmt":"2025-11-03T09:30:18","guid":{"rendered":"https:\/\/dufago.com.vn\/?p=9679"},"modified":"2026-01-06T16:41:39","modified_gmt":"2026-01-06T09:41:39","slug":"yeu-cau-ky-thuat-khi-do-be-tong-chuan-tcvn-de-cong-trinh-ben-vung","status":"publish","type":"post","link":"https:\/\/dufago.com.vn\/en\/yeu-cau-ky-thuat-khi-do-be-tong-chuan-tcvn-de-cong-trinh-ben-vung\/","title":{"rendered":"Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng"},"content":{"rendered":"

B\u00ea t\u00f4ng \u0111\u01b0\u1ee3c v\u00ed nh\u01b0 b\u1ed9 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a m\u1ecdi c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng. Vi\u1ec7c \u0111\u1ed5 b\u00ea t\u00f4ng \u0111\u00fang k\u1ef9 thu\u1eadt kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o c\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu l\u1ef1c, m\u00e0 c\u00f2n quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a k\u1ebft c\u1ea5u. B\u1ea5t k\u1ef3 sai s\u00f3t n\u00e0o trong qu\u00e1 tr\u00ecnh thi c\u00f4ng \u0111\u1ec1u c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c khuy\u1ebft t\u1eadt nghi\u00eam tr\u1ecdng nh\u01b0 r\u1ed7, n\u1ee9t, ph\u00e2n t\u1ea7ng, g\u00e2y gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c v\u00e0 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh xu\u1ed1ng c\u1ea5p.<\/span><\/strong><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p h\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng theo ti\u00eau chu\u1ea9n x\u00e2y d\u1ef1ng Vi\u1ec7t Nam (TCVN) v\u00e0 nh\u1eefng kinh nghi\u1ec7m th\u1ef1c t\u1ebf gi\u00fap nh\u00e0 th\u1ea7u v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u1edf m\u1ee9c cao nh\u1ea5t.<\/span><\/strong><\/p>\n

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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

T\u1ea7m quan tr\u1ecdng c\u1ee7a k\u1ef9 thu\u1eadt \u0111\u1ed5 b\u00ea t\u00f4ng chu\u1ea9n<\/span><\/strong><\/h2>\n

\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh<\/span><\/strong><\/h3>\n

Ch\u1ea5t l\u01b0\u1ee3ng b\u00ea t\u00f4ng kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p ph\u1ed1i v\u1eadt li\u1ec7u (xi m\u0103ng, c\u00e1t, \u0111\u00e1, n\u01b0\u1edbc) m\u00e0 c\u00f2n ph\u1ee5 thu\u1ed9c l\u1edbn v\u00e0o k\u1ef9 thu\u1eadt thi c\u00f4ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. Qu\u00e1 tr\u00ecnh \u0111\u1ed5 v\u00e0 \u0111\u1ea7m n\u00e9n kh\u00f4ng \u0111\u00fang c\u00e1ch l\u00e0 nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0:<\/span><\/p>\n

– R\u1ed7 b\u1ec1 m\u1eb7t (Honeycomb)<\/strong>: G\u00e2y gi\u1ea3m di\u1ec7n t\u00edch ch\u1ecbu l\u1ef1c v\u00e0 t\u1ea1o \u0111\u01b0\u1eddng d\u1eabn cho n\u01b0\u1edbc, h\u01a1i \u1ea9m x\u00e2m nh\u1eadp, l\u00e0m g\u1ec9 s\u00e9t c\u1ed1t th\u00e9p.<\/span><\/p>\n

– Ph\u00e2n t\u1ea7ng (Segregation):<\/strong> L\u00e0m c\u1ed1t li\u1ec7u l\u1edbn l\u1eafng xu\u1ed1ng d\u01b0\u1edbi, v\u1eefa xi m\u0103ng n\u1ed5i l\u00ean tr\u00ean, d\u1eabn \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 b\u00ea t\u00f4ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/span><\/p>\n

– N\u1ee9t s\u1edbm<\/strong>: Do b\u00ea t\u00f4ng m\u1ea5t n\u01b0\u1edbc qu\u00e1 nhanh (thi\u1ebfu b\u1ea3o d\u01b0\u1ee1ng) ho\u1eb7c b\u1ecb co ng\u00f3t kh\u00f4ng ki\u1ec3m so\u00e1t.<\/span><\/p>\n

Th\u1ef1c hi\u1ec7n \u0111\u00fang y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng theo TCVN l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 c\u00f4ng tr\u00ecnh \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 thi\u1ebft k\u1ebf R28 v\u00e0 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t th\u1eddi gian.<\/span><\/p>\n

C\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia (TCVN) c\u1ea7n tu\u00e2n th\u1ee7<\/span><\/strong><\/span><\/h3>\n

Trong thi c\u00f4ng k\u1ebft c\u1ea5u b\u00ea t\u00f4ng v\u00e0 b\u00ea t\u00f4ng c\u1ed1t th\u00e9p to\u00e0n kh\u1ed1i, t\u00e0i li\u1ec7u ph\u00e1p l\u00fd quan tr\u1ecdng nh\u1ea5t c\u1ea7n tham kh\u1ea3o l\u00e0:<\/span><\/p>\n

– TCVN 4453:1995:<\/strong> K\u1ebft c\u1ea5u b\u00ea t\u00f4ng v\u00e0 b\u00ea t\u00f4ng c\u1ed1t th\u00e9p to\u00e0n kh\u1ed1i \u2013 Quy ph\u1ea1m thi c\u00f4ng v\u00e0 nghi\u1ec7m thu<\/i>. (\u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n v\u1ec1 quy tr\u00ecnh \u0111\u1ed5, \u0111\u1ea7m, b\u1ea3o d\u01b0\u1ee1ng).<\/span><\/p>\n

– TCVN 5574:2018:<\/strong> K\u1ebft c\u1ea5u b\u00ea t\u00f4ng v\u00e0 b\u00ea t\u00f4ng c\u1ed1t th\u00e9p \u2013 Ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf<\/i>. (Quy \u0111\u1ecbnh v\u1ec1 chi\u1ec1u d\u00e0y l\u1edbp b\u00ea t\u00f4ng b\u1ea3o v\u1ec7).<\/span><\/p>\n

Xem th\u00eam v\u1ec1:<\/span>\u00a0Ti\u00eau chu\u1ea9n b\u1ea3o d\u01b0\u1ee1ng b\u00ea t\u00f4ng m\u1edbi nh\u1ea5t: TCVN 8828:2011<\/a><\/span><\/strong><\/p>\n

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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

Chu\u1ea9n b\u1ecb to\u00e0n di\u1ec7n tr\u01b0\u1edbc khi \u0111\u1ed5 b\u00ea t\u00f4ng<\/span><\/strong><\/h2>\n

C\u00f4ng t\u00e1c chu\u1ea9n b\u1ecb l\u00e0 b\u01b0\u1edbc then ch\u1ed1t, chi\u1ebfm t\u1edbi 50% th\u00e0nh c\u00f4ng c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1ed5 b\u00ea t\u00f4ng.<\/span><\/p>\n

Ki\u1ec3m tra c\u1ed1t pha (v\u00e1n khu\u00f4n) v\u00e0 c\u1ed1t th\u00e9p<\/span><\/strong><\/span><\/h3>\n

C\u00f4ng t\u00e1c nghi\u1ec7m thu c\u1ed1t pha v\u00e0 c\u1ed1t th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u1eb7t ch\u1ebd v\u00e0 c\u00f3 s\u1ef1 x\u00e1c nh\u1eadn c\u1ee7a gi\u00e1m s\u00e1t (Ch\u1ee7 \u0111\u1ea7u t\u01b0 ho\u1eb7c T\u01b0 v\u1ea5n Gi\u00e1m s\u00e1t).<\/span><\/p>\n\n\n\n\n\n\n\n
Y\u00eau c\u1ea7u k\u0129 thu\u1eadt<\/th>\nChi ti\u1ebft ki\u1ec3m tra<\/th>\n<\/tr>\n
C\u1ed1p pha:<\/td>\nPh\u1ea3i \u0111\u1ea3m b\u1ea3o k\u00edn kh\u00edt (tr\u00e1nh m\u1ea5t n\u01b0\u1edbc xi m\u0103ng), v\u1eefng ch\u1eafc (kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi \u00e1p l\u1ef1c ngang c\u1ee7a b\u00ea t\u00f4ng), \u0111\u00fang k\u00edch th\u01b0\u1edbc h\u00ecnh h\u1ecdc v\u00e0 cao \u0111\u1ed9 thi\u1ebft k\u1ebf.<\/td>\n<\/tr>\n
C\u1ed1t th\u00e9p:<\/td>\nV\u1ecb tr\u00ed v\u00e0 S\u1ed1 l\u01b0\u1ee3ng: C\u1ed1t th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c bu\u1ed9c \u0111\u00fang theo b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf.<\/td>\n<\/tr>\n
S\u1ea1ch s\u1ebd:<\/td>\nC\u1ed1t th\u00e9p kh\u00f4ng \u0111\u01b0\u1ee3c d\u00ednh b\u00f9n \u0111\u1ea5t, d\u1ea7u m\u1ee1, v\u1ea3y s\u1eaft hay g\u1ec9 s\u00e9t qu\u00e1 m\u1ee9c cho ph\u00e9p.<\/td>\n<\/tr>\n
L\u1edbp b\u1ea3o v\u1ec7:<\/td>\nS\u1eed d\u1ee5ng con k\u00ea (b\u1eb1ng v\u1eefa xi m\u0103ng ho\u1eb7c nh\u1ef1a chuy\u00ean d\u1ee5ng) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o chi\u1ec1u d\u00e0y l\u1edbp b\u00ea t\u00f4ng b\u1ea3o v\u1ec7 theo ti\u00eau chu\u1ea9n TCVN 5574:2018. Tr\u00e1nh tuy\u1ec7t \u0111\u1ed1i vi\u1ec7c d\u00f9ng g\u1ea1ch v\u1ee1, \u0111\u00e1 \u0111\u1ec3 k\u00ea.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng b\u00ea t\u00f4ng (tr\u1ed9n tay v\u00e0 th\u01b0\u01a1ng ph\u1ea9m)<\/span><\/strong><\/h3>\n

Ch\u1ea5t l\u01b0\u1ee3ng b\u00ea t\u00f4ng ph\u1ea3i \u0111\u00fang M\u00e1c v\u00e0 \u0110\u1ed9 s\u1ee5t theo h\u1ed3 s\u01a1 thi\u1ebft k\u1ebf.<\/span><\/p>\n

+ V\u1edbi b\u00ea t\u00f4ng th\u01b0\u01a1ng ph\u1ea9m: Ki\u1ec3m tra phi\u1ebfu giao h\u00e0ng (ghi r\u00f5 M\u00e1c, th\u1eddi gian xu\u1ea5t x\u01b0\u1edfng). Th\u1eed \u0111\u1ed9 s\u1ee5t (Slump test): \u0110\u1ed9 s\u1ee5t ph\u1ea3i n\u1eb1m trong gi\u1edbi h\u1ea1n cho ph\u00e9p. Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9: Nhi\u1ec7t \u0111\u1ed9 b\u00ea t\u00f4ng t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u1ed5 kh\u00f4ng n\u00ean v\u01b0\u1ee3t qu\u00e1 30 \u0111\u1ed9 C \u0111\u1ec3 tr\u00e1nh n\u1ee9t s\u1edbm.<\/span><\/p>\n

+ V\u1edbi b\u00ea t\u00f4ng t\u1ef1 tr\u1ed9n: C\u1ea5p ph\u1ed1i v\u1eadt li\u1ec7u (t\u1ef7 l\u1ec7 xi m\u0103ng, c\u00e1t, \u0111\u00e1, n\u01b0\u1edbc) ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 ki\u1ec3m so\u00e1t qua ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ed9c l\u1eadp.<\/span><\/p>\n

C\u00f4ng t\u00e1c s\u00e0n thao t\u00e1c v\u00e0 thi\u1ebft b\u1ecb (m\u00e1y \u0111\u1ea7m, b\u01a1m)<\/span><\/strong><\/span><\/h3>\n
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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

\u0110\u1ea3m b\u1ea3o \u0111\u1ea7y \u0111\u1ee7 s\u00e0n c\u00f4ng t\u00e1c, c\u1ea7u thang t\u1ea1m v\u00e0 c\u00e1c thi\u1ebft b\u1ecb sau ho\u1ea1t \u0111\u1ed9ng t\u1ed1t:<\/span><\/p>\n

+ M\u00e1y \u0111\u1ea7m d\u00f9i: Ph\u1ea3i \u0111\u1ee7 s\u1ed1 l\u01b0\u1ee3ng, ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 ch\u00e0y \u0111\u1ea7m ph\u00f9 h\u1ee3p v\u1edbi k\u1ebft c\u1ea5u.<\/span><\/p>\n

+ Ph\u01b0\u01a1ng ti\u1ec7n v\u1eadn chuy\u1ec3n\/\u0110\u1ed5: B\u01a1m b\u00ea t\u00f4ng (n\u1ebfu c\u00f3), m\u00e1ng nghi\u00eang, \u1ed1ng v\u00f2i voi.<\/span><\/p>\n

Quy tr\u00ecnh \u0111\u1ed5 b\u00ea t\u00f4ng \u0111\u00fang k\u1ef9 thu\u1eadt cho t\u1eebng k\u1ebft c\u1ea5u<\/span><\/strong><\/span><\/h2>\n

Nguy\u00ean t\u1eafc chung l\u00e0 \u0111\u1ed5 li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed5 theo t\u1eebng l\u1edbp c\u00f3 chi\u1ec1u d\u00e0y ph\u00f9 h\u1ee3p.<\/span><\/p>\n

K\u1ef9 thu\u1eadt \u0111\u1ed5 b\u00ea t\u00f4ng c\u1ed9t v\u00e0 v\u00e1ch<\/span><\/strong><\/h3>\n

1. Ch\u1ed1ng r\u1ed7 \u0111\u00e1y:<\/strong> \u0110\u1ed5 m\u1ed9t l\u1edbp v\u1eefa xi m\u0103ng ho\u1eb7c b\u00ea t\u00f4ng c\u00f3 c\u1ed1t li\u1ec7u nh\u1ecf (d\u00e0y 10 – 20cm) xu\u1ed1ng \u0111\u00e1y c\u1ed9t\/v\u00e1ch tr\u01b0\u1edbc, \u0111\u1ea7m k\u1ef9 \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng c\u00e1c c\u1ed1t li\u1ec7u l\u1edbn l\u1eafng \u0111\u1ecdng g\u00e2y r\u1ed7 ch\u00e2n.<\/span><\/p>\n

2. Chi\u1ec1u cao r\u01a1i t\u1ef1 do:<\/strong> Kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 1.5m (theo TCVN 4453:1995) \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u1ea7ng. Khi c\u1ed9t cao, c\u1ea7n d\u00f9ng m\u00e1ng nghi\u00eang ho\u1eb7c \u1ed1ng v\u00f2i voi.<\/span><\/p>\n

3. \u0110\u1ed5 li\u00ean t\u1ee5c:<\/strong> Chi\u1ec1u d\u00e0y m\u1ed7i l\u1edbp \u0111\u1ed5 t\u1ed1i \u01b0u kho\u1ea3ng 30 – 35cm. \u0110\u1ed5 li\u00ean t\u1ee5c t\u1eeb d\u01b0\u1edbi l\u00ean.<\/span><\/p>\n

4. D\u1eebng \u0111\u1ed5 t\u1ea1i d\u1ea7m:<\/strong> Khi \u0111\u1ed5 c\u1ed9t li\u00ean k\u1ebft v\u1edbi d\u1ea7m\/s\u00e0n, n\u00ean d\u1eebng \u0111\u1ed5 b\u00ea t\u00f4ng c\u1ed9t c\u00e1ch m\u1eb7t \u0111\u00e1y d\u1ea7m kho\u1ea3ng 3 – 5cm. Ch\u1edd kho\u1ea3ng 1 – 2gi\u1edd \u0111\u1ec3 b\u00ea t\u00f4ng co ng\u00f3t ban \u0111\u1ea7u, sau \u0111\u00f3 m\u1edbi \u0111\u1ed5 ti\u1ebfp b\u00ea t\u00f4ng cho d\u1ea7m\/s\u00e0n. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t \u1edf v\u1ecb tr\u00ed n\u1ed1i c\u1ed9t – d\u1ea7m.<\/span><\/p>\n

See more:<\/span>\u00a0B\u00ea t\u00f4ng b\u1ecb n\u1ee9t 24h \u0111\u1ea7u sau khi \u0111\u1ed5 \u2013 Nguy\u00ean nh\u00e2n & c\u00e1ch x\u1eed l\u00fd kh\u1ea9n c\u1ea5p<\/a><\/span><\/strong><\/p>\n

K\u1ef9 thu\u1eadt \u0111\u1ed5 b\u00ea t\u00f4ng d\u1ea7m v\u00e0 s\u00e0n<\/span><\/strong><\/h3>\n

1. Nguy\u00ean t\u1eafc \u0111\u1ed5:<\/strong> Thi c\u00f4ng theo nguy\u00ean t\u1eafc gi\u1eadt l\u00f9i (cu\u1ed1n chi\u1ebfu t\u1eebng d\u1ea3i), \u0111\u1ed5 t\u1eeb v\u1ecb tr\u00ed xa nh\u1ea5t r\u1ed3i ti\u1ebfn d\u1ea7n v\u1ec1 v\u1ecb tr\u00ed m\u00e1y b\u01a1m\/c\u1eeda \u0111\u1ed5.<\/span><\/p>\n

2. Ph\u00e2n d\u1ea3i:<\/strong> Chia m\u1eb7t s\u00e0n th\u00e0nh c\u00e1c d\u1ea3i nh\u1ecf (1 – 2cm) v\u00e0 \u0111\u1ed5 d\u1ea7m c\u00f9ng l\u00fac v\u1edbi b\u1ea3n s\u00e0n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng kh\u1ed1i.<\/span><\/p>\n

3. Tr\u00e1nh \u0111\u1ecdng n\u01b0\u1edbc:<\/strong> Kh\u00f4ng \u0111\u1ec3 n\u01b0\u1edbc xi m\u0103ng \u0111\u1ecdng l\u1ea1i \u1edf g\u00f3c c\u1ed1p pha ho\u1eb7c d\u1ecdc theo m\u1eb7t c\u1ed1p pha.<\/span><\/p>\n

4. Li\u00ean t\u1ee5c:<\/strong> Qu\u00e1 tr\u00ecnh \u0111\u1ed5, \u0111\u1ea7m, g\u1ea1t m\u1eb7t c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n li\u00ean t\u1ee5c v\u00e0 \u0111\u1ec1u tay.<\/span><\/p>\n

K\u1ef9 thu\u1eadt \u0111\u1ed5 b\u00ea t\u00f4ng m\u00f3ng (m\u00f3ng b\u0103ng, m\u00f3ng c\u1ecdc)<\/span><\/strong><\/span><\/h3>\n
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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

– \u00c1p d\u1ee5ng nguy\u00ean t\u1eafc \u0111\u1ed5 cu\u1ed1n chi\u1ebfu t\u1eeb xa t\u1edbi g\u1ea7n.<\/span><\/p>\n

– B\u1ec1 m\u1eb7t m\u00f3ng sau khi \u0111\u1ed5 c\u1ea7n ph\u1ea3i ph\u1eb3ng v\u00e0 c\u00f3 \u0111\u1ed9 d\u1ed1c ph\u00f9 h\u1ee3p (t\u00f9y thi\u1ebft k\u1ebf) \u0111\u1ec3 tho\u00e1t n\u01b0\u1edbc.<\/span><\/p>\n

– \u0110\u1ed1i v\u1edbi m\u00f3ng l\u1edbn, c\u1ea7n c\u00f3 ph\u01b0\u01a1ng \u00e1n x\u1eed l\u00fd m\u1ea1ch ng\u1eebng r\u00f5 r\u00e0ng (n\u1ebfu kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed5 qu\u00e1 l\u1edbn).<\/span><\/p>\n

C\u00f4ng t\u00e1c \u0111\u1ea7m b\u00ea t\u00f4ng: ch\u00eca kh\u00f3a c\u1ee7a \u0111\u1ed9 \u0111\u1eb7c ch\u1eafc<\/span><\/strong><\/h2>\n

\u0110\u1ea7m l\u00e0 thao t\u00e1c c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ecdt kh\u00ed v\u00e0 l\u00e0m cho b\u00ea t\u00f4ng l\u00e8n ch\u1eb7t v\u00e0o c\u00e1c g\u00f3c c\u1ea1nh v\u00e0 c\u1ed1t th\u00e9p, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u0111\u1eb7c ch\u1eafc t\u1ed1i \u0111a.<\/span><\/p>\n

Nguy\u00ean t\u1eafc \u0111\u1ea7m d\u00f9i chu\u1ea9n x\u00e1c<\/span><\/strong><\/span><\/h3>\n

+ Ph\u01b0\u01a1ng ph\u00e1p: \u0110\u1ea7m theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, c\u1eafm ch\u00e0y \u0111\u1ea7m v\u00e0o l\u1edbp b\u00ea t\u00f4ng theo chi\u1ec1u s\u00e2u.<\/span><\/p>\n

+ Chi\u1ec1u s\u00e2u: Ch\u00e0y \u0111\u1ea7m ph\u1ea3i c\u1eafm s\u00e2u v\u00e0o l\u1edbp b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u1ed5 tr\u01b0\u1edbc \u0111\u00f3 kho\u1ea3ng 10 – 15cm \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 li\u00ean k\u1ebft gi\u1eefa c\u00e1c l\u1edbp.<\/span><\/p>\n

+ <\/span>Th\u1eddi gian: \u0110\u1ea7m t\u1ea1i m\u1ed9t v\u1ecb tr\u00ed kho\u1ea3ng 20 – 40 gi\u00e2y ho\u1eb7c \u0111\u1ebfn khi b\u1ec1 m\u1eb7t b\u00ea t\u00f4ng n\u1ed5i v\u00e1ng xi m\u0103ng v\u00e0 kh\u00f4ng c\u00f2n b\u1ecdt kh\u00ed tho\u00e1t ra.<\/span><\/p>\n

+ Kho\u1ea3ng c\u00e1ch: Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111i\u1ec3m \u0111\u1ea7m kh\u00f4ng n\u00ean v\u01b0\u1ee3t qu\u00e1 1.5 l\u1ea7n b\u00e1n k\u00ednh t\u00e1c d\u1ee5ng c\u1ee7a ch\u00e0y \u0111\u1ea7m.<\/span><\/p>\n

+ L\u01b0u \u00fd quan tr\u1ecdng:<\/strong><\/em> Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u00f9ng \u0111\u1ea7m d\u00f9i \u0111\u1ec3 d\u1ecbch chuy\u1ec3n ngang b\u00ea t\u00f4ng trong c\u1ed1p pha, v\u00e0 tr\u00e1nh \u0111\u1ea7m qu\u00e1 l\u00e2u t\u1ea1i m\u1ed9t v\u1ecb tr\u00ed \u0111\u1ec3 ng\u0103n ng\u1eeba ph\u00e2n t\u1ea7ng.<\/span><\/p>\n

S\u1eed d\u1ee5ng \u0111\u1ea7m b\u00e0n v\u00e0 \u0111\u1ea7m rung (t\u00f9y k\u1ebft c\u1ea5u)<\/span><\/strong><\/span><\/h3>\n

\u0110\u1ea7m b\u00e0n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft c\u1ea5u b\u00ea t\u00f4ng m\u1ecfng, ph\u1eb3ng nh\u01b0 s\u00e0n, m\u1eb7t \u0111\u01b0\u1eddng. M\u00e1y \u0111\u1ea7m d\u00f9i l\u00e0 thi\u1ebft b\u1ecb ch\u00ednh cho c\u00e1c c\u1ea5u ki\u1ec7n kh\u1ed1i l\u1edbn nh\u01b0 c\u1ed9t, d\u1ea7m, m\u00f3ng.<\/span><\/p>\n

B\u1ea3o d\u01b0\u1ee1ng b\u00ea t\u00f4ng: quy\u1ebft \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 cu\u1ed1i c\u00f9ng<\/span><\/strong><\/h2>\n

C\u00f4ng t\u00e1c b\u1ea3o d\u01b0\u1ee1ng (d\u01b0\u1ee1ng h\u1ed9) quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn vi\u1ec7c b\u00ea t\u00f4ng c\u00f3 \u0111\u1ea1t \u0111\u1ee7 c\u01b0\u1eddng \u0111\u1ed9 R28 hay kh\u00f4ng v\u00e0 h\u1ea1n ch\u1ebf t\u1ed1i \u0111a n\u1ee9t do co ng\u00f3t. C\u00f4ng \u0111o\u1ea1n n\u00e0y th\u01b0\u1eddng b\u1ecb b\u1ecf qua nh\u01b0ng l\u1ea1i c\u1ef1c k\u1ef3 quan tr\u1ecdng.<\/span><\/p>\n

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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

Nguy\u00ean t\u1eafc b\u1ea3o d\u01b0\u1ee1ng v\u00e0 th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u<\/span><\/strong><\/h3>\n

\u00a0Th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u: B\u1ea3o d\u01b0\u1ee1ng ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh ngay sau khi b\u1ec1 m\u1eb7t b\u00ea t\u00f4ng se l\u1ea1i (th\u01b0\u1eddng sau 2 – 4 gi\u1edd khi \u0111\u1ed5) v\u00e0 c\u00f3 th\u1ec3 \u0111i l\u1ea1i \u0111\u01b0\u1ee3c.<\/span><\/p>\n

Th\u1eddi gian: Giai \u0111o\u1ea1n b\u1ea3o d\u01b0\u1ee1ng \u1ea9m quan tr\u1ecdng nh\u1ea5t l\u00e0 7 ng\u00e0y \u0111\u1ea7u ti\u00ean sau khi \u0111\u1ed5.<\/span><\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p:<\/span><\/strong><\/p>\n

– T\u01b0\u1edbi n\u01b0\u1edbc: T\u01b0\u1edbi phun s\u01b0\u01a1ng nh\u1eb9 nh\u00e0ng, gi\u1eef \u1ea9m li\u00ean t\u1ee5c. Trong 3 ng\u00e0y \u0111\u1ea7u n\u00ean t\u01b0\u1edbi 3 gi\u1edd\/l\u1ea7n, ban \u0111\u00eam \u00edt nh\u1ea5t 2 l\u1ea7n.<\/span><\/p>\n

– Che ph\u1ee7: D\u00f9ng bao t\u1ea3i \u1ea9m, b\u1ea1t chuy\u00ean d\u1ee5ng, ho\u1eb7c r\u01a1m r\u1ea1 \u0111\u1ec3 che ph\u1ee7 v\u00e0 gi\u1eef \u1ea9m li\u00ean t\u1ee5c.<\/span><\/p>\n

X\u1eed l\u00fd b\u00ea t\u00f4ng trong \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1eb7c bi\u1ec7t<\/span><\/strong><\/h3>\n

Tr\u1eddi n\u1eafng n\u00f3ng (nh\u01b0 \u0110\u00e0 N\u1eb5ng, mi\u1ec1n Trung): Ph\u1ea3i che ch\u1eafn b\u1eb1ng b\u1ea1t, l\u01b0\u1edbi che n\u1eafng. N\u00ean \u0111\u1ed5 b\u00ea t\u00f4ng v\u00e0o th\u1eddi \u0111i\u1ec3m m\u00e1t m\u1ebb (s\u00e1ng s\u1edbm ho\u1eb7c chi\u1ec1u m\u00e1t\/\u0111\u00eam). T\u0103ng c\u01b0\u1eddng t\u01b0\u1edbi n\u01b0\u1edbc b\u1ea3o d\u01b0\u1ee1ng ngay sau khi \u0111\u1ed5 \u0111\u1ec3 tr\u00e1nh b\u00ea t\u00f4ng m\u1ea5t n\u01b0\u1edbc qu\u00e1 nhanh g\u00e2y n\u1ee9t.<\/span><\/p>\n

Tr\u1eddi m\u01b0a: Ph\u1ea3i c\u00f3 bi\u1ec7n ph\u00e1p che ch\u1eafn c\u1ed1p pha v\u00e0 khu v\u1ef1c \u0111\u1ed5 b\u00ea t\u00f4ng \u0111\u1ec3 tr\u00e1nh n\u01b0\u1edbc m\u01b0a l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 W\/C v\u00e0 gi\u1ea3m m\u00e1c b\u00ea t\u00f4ng.<\/span><\/p>\n

Xem ngay:<\/span>\u00a0M\u1eb9o b\u1ea3o d\u01b0\u1ee1ng b\u00ea t\u00f4ng m\u00f9a n\u00f3ng: Tr\u00e1nh \u0111\u1ed5 b\u00ea t\u00f4ng xong b\u1ecb n\u1ee9t<\/a><\/span><\/strong><\/p>\n

Nghi\u1ec7m thu c\u00f4ng t\u00e1c \u0111\u1ed5 b\u00ea t\u00f4ng<\/span><\/strong><\/h2>\n

\u00a0Nghi\u1ec7m thu l\u00e0 b\u01b0\u1edbc x\u00e1c nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng tr\u01b0\u1edbc khi chuy\u1ec3n sang giai \u0111o\u1ea1n thi c\u00f4ng ti\u1ebfp theo.<\/span><\/p>\n

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Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt khi \u0111\u1ed5 b\u00ea t\u00f4ng: Chu\u1ea9n TCVN \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng<\/figcaption><\/figure>\n

Ki\u1ec3m tra b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 ph\u1eb3ng sau khi \u0111\u1ed5<\/span><\/strong><\/h3>\n

B\u1ec1 m\u1eb7t b\u00ea t\u00f4ng ph\u1ea3i ph\u1eb3ng, nh\u1eb5n, kh\u00f4ng c\u00f3 r\u1ed7 kh\u00ed, kh\u00f4ng b\u1ecb s\u1ee9t m\u1ebb.<\/span><\/p>\n

Ki\u1ec3m tra cao \u0111\u1ed9 b\u1eb1ng m\u00e1y th\u1ee7y b\u00ecnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u00fang thi\u1ebft k\u1ebf.<\/span><\/p>\n

L\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m v\u00e0 \u0111\u00e1nh gi\u00e1 m\u00e1c (c\u01b0\u1eddng \u0111\u1ed9) b\u00ea t\u00f4ng<\/span><\/strong><\/h3>\n

+ L\u1ea5y m\u1eabu: Th\u1ef1c hi\u1ec7n l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m (th\u01b0\u1eddng l\u00e0 3 kh\u1ed1i 15 x 15 x 15cm) cho m\u1ed7i \u0111\u1ee3t \u0111\u1ed5 ho\u1eb7c 20m3 b\u00ea t\u00f4ng (t\u00f9y theo quy \u0111\u1ecbnh c\u00f4ng tr\u00ecnh).<\/span><\/p>\n

+ N\u00e9n m\u1eabu: M\u1eabu \u0111\u01b0\u1ee3c b\u1ea3o d\u01b0\u1ee1ng trong \u0111i\u1ec1u ki\u1ec7n chu\u1ea9n v\u00e0 \u0111\u01b0\u1ee3c n\u00e9n \u1edf tu\u1ed5i 3 ng\u00e0y, 7 ng\u00e0y v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 28 ng\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 \u0111\u00e1nh gi\u00e1 m\u00e1c thi\u1ebft k\u1ebf (R28).<\/span><\/p>\n

Xem ngay:<\/span>\u00a0Ch\u1ecdn m\u00e1c 250 hay m\u00e1c 300: \u0110\u1ed5 b\u00ea t\u00f4ng m\u00f3ng, s\u00e0n n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/a><\/span><\/strong><\/p>\n

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FAQ (C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p)<\/h2>\n
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\n\n ▶<\/span><\/p>\n

FAQ 1: N\u00ean \u0111\u1ed5 b\u00ea t\u00f4ng t\u01b0\u01a1i hay b\u00ea t\u00f4ng tr\u1ed9n t\u1ea1i ch\u1ed7?<\/h3>\n<\/summary>\n
Tr\u1ea3 l\u1eddi: B\u00ea t\u00f4ng t\u01b0\u01a1i (b\u00ea t\u00f4ng th\u01b0\u01a1ng ph\u1ea9m) \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch s\u1eed d\u1ee5ng v\u00ec \u0111\u01b0\u1ee3c tr\u1ed9n b\u1eb1ng tr\u1ea1m tr\u1ed9n c\u00f4ng nghi\u1ec7p v\u1edbi c\u1ea5p ph\u1ed1i ch\u00ednh x\u00e1c, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 c\u00f3 ph\u1ee5 gia t\u1ed1i \u01b0u. B\u00ea t\u00f4ng tr\u1ed9n t\u1ea1i ch\u1ed7 ch\u1ec9 n\u00ean d\u00f9ng cho c\u00e1c c\u00f4ng tr\u00ecnh nh\u1ecf ho\u1eb7c nh\u1eefng v\u1ecb tr\u00ed \u0111\u1eb7c bi\u1ec7t kh\u00f3 ti\u1ebfp c\u1eadn, v\u1edbi \u0111i\u1ec1u ki\u1ec7n ph\u1ea3i c\u00f3 s\u1ef1 gi\u00e1m s\u00e1t nghi\u00eam ng\u1eb7t v\u1ec1 c\u1ea5p ph\u1ed1i v\u00e0 th\u1eddi gian tr\u1ed9n.<\/div>\n<\/details>\n
\n\n ▶<\/span><\/p>\n

FAQ 2: Sau bao l\u00e2u th\u00ec c\u00f3 th\u1ec3 th\u00e1o c\u1ed1p pha?<\/h3>\n<\/summary>\n
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Tr\u1ea3 l\u1eddi: Th\u1eddi gian th\u00e1o c\u1ed1p pha ph\u1ee5 thu\u1ed9c v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 b\u00ea t\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c (th\u01b0\u1eddng t\u00ednh b\u1eb1ng ph\u1ea7n tr\u0103m c\u01b0\u1eddng \u0111\u1ed9 thi\u1ebft k\u1ebf R28 v\u00e0 lo\u1ea1i k\u1ebft c\u1ea5u, tu\u00e2n th\u1ee7 theo TCVN 4453:1995:<\/span><\/p>\n

    \n
  • C\u1ed9t, t\u01b0\u1eddng: Chi ti\u1ebft ki\u1ec3m tra 50%<\/span><\/li>\n
  • D\u1ea7m, s\u00e0n kh\u00f4ng ch\u1ecbu t\u1ea3i: Chi ti\u1ebft ki\u1ec3m tra 70%<\/span><\/li>\n
  • D\u1ea7m, s\u00e0n ch\u1ecbu t\u1ea3i thi\u1ebft k\u1ebf: Chi ti\u1ebft ki\u1ec3m tra 100%<\/span><\/li>\n<\/ul>\n

    Th\u1eddi gian trung b\u00ecnh \u0111\u1ec3 \u0111\u1ea1t 50% th\u01b0\u1eddng l\u00e0 3 – 5 ng\u00e0y, nh\u01b0ng c\u1ea7n ki\u1ec3m tra b\u1eb1ng th\u00ed nghi\u1ec7m.<\/span><\/p>\n<\/div>\n<\/details>\n

    \n\n ▶<\/span><\/p>\n

    FAQ 3: X\u1eed l\u00fd m\u1ea1ch ng\u1eebng b\u00ea t\u00f4ng nh\u01b0 th\u1ebf n\u00e0o cho \u0111\u00fang k\u1ef9 thu\u1eadt?<\/h3>\n<\/summary>\n
    \n

    Tr\u1ea3 l\u1eddi: M\u1ea1ch ng\u1eebng l\u00e0 n\u01a1i ng\u1eebng \u0111\u1ed5 b\u00ea t\u00f4ng, l\u00e0m gi\u1ea3m \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t c\u1ee7a k\u1ebft c\u1ea5u.<\/span><\/p>\n

      \n
    • V\u1ecb tr\u00ed: Ph\u1ea3i \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed c\u00f3 l\u1ef1c c\u1eaft v\u00e0 m\u00f4 men u\u1ed1n nh\u1ecf nh\u1ea5t (th\u01b0\u1eddng l\u00e0 gi\u1eefa nh\u1ecbp d\u1ea7m\/s\u00e0n, ch\u00e2n c\u1ed9t).<\/span><\/li>\n
    • X\u1eed l\u00fd: Tr\u01b0\u1edbc khi \u0111\u1ed5 b\u00ea t\u00f4ng m\u1edbi, b\u1ec1 m\u1eb7t m\u1ea1ch ng\u1eebng c\u0169 ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch ho\u00e0n to\u00e0n (\u0111\u1ee5c b\u1ecf l\u1edbp v\u1eefa y\u1ebfu, r\u1eeda s\u1ea1ch b\u1ee5i b\u1ea9n), l\u00e0m \u1ea9m v\u00e0 qu\u00e9t m\u1ed9t l\u1edbp h\u1ed3 d\u1ea7u xi m\u0103ng (ho\u1eb7c v\u1eefa xi m\u0103ng c\u00f3 ph\u1ee5 gia li\u00ean k\u1ebft) \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u00e1m d\u00ednh.<\/li>\n<\/ul>\n<\/div>\n<\/details>\n
      \n\n ▶<\/span><\/p>\n

      FAQ 4: L\u00e0m g\u00ec n\u1ebfu b\u00ea t\u00f4ng b\u1ecb r\u1ed7 sau khi th\u00e1o c\u1ed1p pha?<\/h3>\n<\/summary>\n
      \n

      Tr\u1ea3 l\u1eddi: T\u00f9y m\u1ee9c \u0111\u1ed9 r\u1ed7:<\/span><\/p>\n

        \n
      • R\u1ed7 nh\u1eb9: \u0110\u1ee5c b\u1ecf ph\u1ea7n v\u1eefa y\u1ebfu, l\u00e0m s\u1ea1ch v\u00e0 tr\u00e1t b\u1eb1ng v\u1eefa xi m\u0103ng polyme ho\u1eb7c v\u1eefa s\u1eeda ch\u1eefa chuy\u00ean d\u1ee5ng kh\u00f4ng co ng\u00f3t.<\/span><\/li>\n
      • R\u1ed7 n\u1eb7ng: C\u1ea7n \u0111\u00e1nh gi\u00e1 c\u1ee7a k\u1ef9 s\u01b0 k\u1ebft c\u1ea5u. C\u00f3 th\u1ec3 ph\u1ea3i \u0111\u1ee5c s\u00e2u v\u00e0 \u0111\u1ed5 l\u1ea1i b\u00ea t\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 ph\u1ee5 gia li\u00ean k\u1ebft, ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p b\u01a1m v\u1eefa \u00e1p l\u1ef1c cao.<\/li>\n<\/ul>\n<\/div>\n<\/details>\n
        \n\n ▶<\/span><\/p>\n

        FAQ 5: Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt b\u00ea t\u00f4ng cho d\u1ef1 \u00e1n ven bi\u1ec3n \u0110\u00e0 N\u1eb5ng c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t?<\/h3>\n<\/summary>\n
        Tr\u1ea3 l\u1eddi: C\u1ea7n tu\u00e2n th\u1ee7 TCVN 9346:2012 v\u00e0 TCVN 9139:2012. B\u1eaft bu\u1ed9c s\u1eed d\u1ee5ng M\u00e1c b\u00ea t\u00f4ng cao (t\u0103ng \u0111\u1ed9 \u0111\u1eb7c ch\u1eafc) v\u00e0 ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t t\u1ef7 l\u1ec7 n\u01b0\u1edbc\/xi m\u0103ng \u0111\u1ec3 ch\u1ed1ng th\u1ea5m Cloride (g\u00e2y \u0103n m\u00f2n c\u1ed1t th\u00e9p). \u0110\u1eb7c bi\u1ec7t, ph\u1ea3i t\u0103ng chi\u1ec1u d\u00e0y l\u1edbp b\u00ea t\u00f4ng b\u1ea3o v\u1ec7 c\u1ed1t th\u00e9p (th\u01b0\u1eddng c\u1ed9ng th\u00eam 10mm cho c\u00e1c k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi) v\u00e0 ki\u1ec3m tra g\u1eaft gao h\u00e0m l\u01b0\u1ee3ng C1- trong c\u1ed1t li\u1ec7u (c\u00e1t).<\/div>\n<\/details><\/div>\n