{"id":9395,"date":"2025-09-10T16:42:37","date_gmt":"2025-09-10T09:42:37","guid":{"rendered":"https:\/\/dufago.com.vn\/?p=9395"},"modified":"2025-09-11T08:28:08","modified_gmt":"2025-09-11T01:28:08","slug":"be-tong-bot-khi-do-tai-cho-cho-mai-lap-ho-rong-hieu-qua","status":"publish","type":"post","link":"https:\/\/dufago.com.vn\/en\/be-tong-bot-khi-do-tai-cho-cho-mai-lap-ho-rong-hieu-qua\/","title":{"rendered":"B\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u2013 \u0110\u1ed5 t\u1ea1i ch\u1ed7 cho m\u00e1i & l\u1ea5p h\u1ed1 r\u1ed7ng hi\u1ec7u qu\u1ea3"},"content":{"rendered":"

B\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u0111ang n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p v\u1eadt li\u1ec7u \u0111\u1ed9t ph\u00e1, mang \u0111\u1ebfn nhi\u1ec1u \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi b\u00ea t\u00f4ng truy\u1ec1n th\u1ed1ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed hay c\u00f2n g\u1ecdi l\u00e0 b\u00ea t\u00f4ng nh\u1eb9.<\/span><\/strong><\/p>\n

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B\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u2013 \u0110\u1ed5 t\u1ea1i ch\u1ed7 cho m\u00e1i & l\u1ea5p h\u1ed1 r\u1ed7ng hi\u1ec7u qu\u1ea3<\/figcaption><\/figure>\n

Kh\u00e1i ni\u1ec7m b\u00ea t\u00f4ng b\u1ecdt kh\u00ed v\u00e0 chu\u1ea9n \u00e1p d\u1ee5ng<\/span><\/strong><\/h2>\n

B\u00ea t\u00f4ng b\u1ecdt kh\u00ed l\u00e0 \u201ccellular concrete\u201d t\u1ea1o t\u1eeb v\u1eefa xi m\u0103ng\u2013n\u01b0\u1edbc + b\u1ecdt t\u1ea1o kh\u00ed, d\u1ea3i kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch th\u01b0\u1eddng t\u1eeb ~320\u20131920 kg\/m\u00b3; h\u01b0\u1edbng d\u1eabn ACI 523.3R-14 \u00e1p d\u1ee5ng cho d \u2265 800 kg\/m\u00b3, ghi nh\u1eadn \u1ee9ng d\u1ee5ng c\u00e1ch nhi\u1ec7t m\u00e1i, l\u1ea5p n\u1ec1n \u0111\u1ecba k\u1ef9 thu\u1eadt v\u00e0 \u0111\u1ed5 t\u1ea1i ch\u1ed7.<\/span><\/p>\n

Ph\u00e2n bi\u1ec7t b\u00ea t\u00f4ng b\u1ecdt CLC v\u00e0 b\u00ea t\u00f4ng kh\u00ed ch\u01b0ng \u00e1p AAC<\/span><\/strong><\/span><\/p>\n

– B\u00ea t\u00f4ng b\u1ecdt kh\u00ed kh\u00f4ng ch\u01b0ng \u00e1p (CLC):<\/strong> \u0110\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch tr\u1ed9n ch\u1ea5t t\u1ea1o b\u1ecdt v\u1edbi v\u1eefa, sau \u0111\u00f3 \u0111\u1ed5 v\u00e0o khu\u00f4n v\u00e0 \u0111\u1ec3 kh\u00f4 t\u1ef1 nhi\u00ean. T\u00ecm hi\u1ec3u v\u1ec1 quy tr\u00ecnh s\u1ea3n xu\u1ea5t b\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u0111\u1ec3 th\u1ea5y r\u00f5 h\u01a1n v\u1ec1 c\u00f4ng ngh\u1ec7 n\u00e0y.<\/span><\/p>\n

– B\u00ea t\u00f4ng kh\u00ed ch\u01b0ng \u00e1p (AAC):<\/strong> \u0110\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong c\u00e1c l\u00f2 h\u1ea5p \u00e1p su\u1ea5t cao, t\u1ea1o ra s\u1ea3n ph\u1ea9m c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 cao v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n. H\u00e3y so s\u00e1nh b\u00ea t\u00f4ng b\u1ecdt kh\u00ed v\u00e0 b\u00ea t\u00f4ng kh\u00ed ch\u01b0ng \u00e1p \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u.<\/span><\/p>\n

Ti\u00eau chu\u1ea9n Vi\u1ec7t Nam TCVN 9029:2017 quy \u0111\u1ecbnh s\u1ea3n ph\u1ea9m b\u00ea t\u00f4ng b\u1ecdt & b\u00ea t\u00f4ng kh\u00ed kh\u00f4ng ch\u01b0ng \u00e1p (AAC kh\u00f4ng ch\u01b0ng) \u1edf d\u1ea1ng kh\u1ed1i\/t\u1ea5m, gi\u00fap tr\u00e1nh nh\u1ea7m l\u1eabn v\u1edbi \u0111\u1ed5 t\u1ea1i ch\u1ed7 (cast-in-place). Khi \u0111\u1ed5 t\u1ea1i ch\u1ed7, v\u1eabn tham chi\u1ebfu th\u1eed nghi\u1ec7m \u201cb\u00ea t\u00f4ng nh\u1eb9\u201d.<\/span><\/p>\n

Th\u1eed nghi\u1ec7m li\u00ean quan:<\/span><\/strong><\/p>\n

– Foaming agent: ch\u1ecdn theo ASTM C869; \u0111\u00e1nh gi\u00e1 hi\u1ec7u n\u0103ng theo ASTM C796. ASTM International | ASTM+1<\/span><\/p>\n

– C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n b\u00ea t\u00f4ng<\/a> nh\u1eb9 c\u00e1ch nhi\u1ec7t: ASTM C495\/C495M (ODD \u2264 800 kg\/m\u00b3). iTeh Standards<\/span><\/p>\n

– TCVN 9030:2017: ph\u01b0\u01a1ng ph\u00e1p th\u1eed cho b\u00ea t\u00f4ng nh\u1eb9\/s\u1ea3n ph\u1ea9m (c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n, kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch kh\u00f4, \u0111\u1ed9 h\u00fat n\u01b0\u1edbc, h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t\u2026).<\/span><\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a b\u00ea t\u00f4ng b\u1ecdt kh\u00ed r\u1ed9ng r\u00e3i trong x\u00e2y d\u1ef1ng<\/span><\/strong><\/h2>\n

\u0110\u1ed5 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed ch\u1ed1ng n\u00f3ng m\u00e1i<\/span><\/strong><\/h3>\n

– M\u1ee5c ti\u00eau:<\/strong> Gi\u1ea3m truy\u1ec1n nhi\u1ec7t, t\u1ea1o d\u1ed1c nh\u1eb9, gi\u1ea3m t\u1ea3i m\u00e1i.<\/span><\/p>\n

– D\u1ea3i m\u1eadt \u0111\u1ed9 khuy\u1ebfn ngh\u1ecb:<\/strong> ~400\u2013600 kg\/m\u00b3 cho c\u00e1ch nhi\u1ec7t m\u00e1i; t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt cho bi\u1ebft \u1edf d\u1ea3i n\u00e0y k \u2248 0,1 W\/m\u00b7K (tham kh\u1ea3o). EAB Associates, SpringerLink<\/span><\/p>\n

– \u0110\u1ed9 d\u00e0y ph\u1ed5 bi\u1ebfn:<\/strong> 40\u201380 mm (t\u00f9y m\u00e1i, t\u1ea3i s\u1eed d\u1ee5ng, ti\u00eau chu\u1ea9n ch\u1ed1ng th\u1ea5m).<\/span><\/p>\n

– \u01afu \u0111i\u1ec3m:<\/strong> T\u1ef1 ch\u1ea3y \u2013 kh\u00f4ng \u0111\u1ea7m, thi c\u00f4ng nhanh, \u00edt m\u1ea1ch ng\u1eebng, b\u01a1m xa \u0111\u01b0\u1ee3c \u2192 ph\u00f9 h\u1ee3p m\u00e1i nh\u00e0 ph\u1ed1, x\u01b0\u1edfng, kh\u00e1ch s\u1ea1n \u1edf \u0110\u00e0 N\u1eb5ng\u2013Qu\u1ea3ng Nam\u2013Qu\u1ea3ng Ng\u00e3i (kh\u00ed h\u1eadu n\u1eafng n\u00f3ng \u2013 gi\u00f3 bi\u1ec3n).<\/span><\/p>\n

– L\u1edbp ho\u00e0n thi\u1ec7n:<\/strong> lu\u00f4n ph\u1ee7 ch\u1ed1ng th\u1ea5m (s\u01a1n PU\/Polyurea, m\u00e0ng kh\u00f2\/HDPE) + l\u1edbp v\u1eefa b\u1ea3o v\u1ec7\/\u1ed1p g\u1ea1ch n\u1ebfu c\u00f3 l\u01b0u th\u00f4ng ch\u00e2n ng\u01b0\u1eddi.<\/span><\/p>\n

Xem ngay:<\/span> T\u1ef7 l\u1ec7 tr\u1ed9n xi m\u0103ng v\u1edbi n\u01b0\u1edbc chu\u1ea9n k\u1ef9 thu\u1eadt<\/a><\/span><\/strong><\/p>\n

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\u0110\u1ed5 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed l\u1ea5p h\u1ed1 r\u1ed7ng<\/span><\/strong><\/span><\/h3>\n<\/div>\n<\/div>\n
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B\u00ea t\u00f4ng b\u1ecdt kh\u00ed<\/figcaption><\/figure>\n

M\u1ee5c ti\u00eau:<\/strong> B\u00f9 l\u00fan n\u1ec1n, l\u1ea5p kho\u1ea3ng r\u1ed7ng sau \u0111\u01b0\u1eddng \u1ed1ng\/tho\u00e1t n\u01b0\u1edbc c\u0169, s\u00e0n r\u1ed7ng, h\u1ed1 m\u00f3ng b\u1ecf kh\u00f4ng\u2026<\/span><\/p>\n

D\u1ea3i m\u1eadt \u0111\u1ed9 khuy\u1ebfn ngh\u1ecb:<\/strong> ~600\u2013800 kg\/m\u00b3 \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n \u2013 ki\u1ec3m so\u00e1t n\u1ed5i\/\u0111\u1ea9y tr\u1ed3i, v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh d\u1ec5 b\u01a1m \u2013 t\u1ef1 ch\u1ea3y. Th\u1ef1c h\u00e0nh c\u00f4ng nghi\u1ec7p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn d\u1ea3i n\u00e0y cho void filling (tham kh\u1ea3o). Leadcrete<\/span><\/p>\n

\u01afu \u0111i\u1ec3m:<\/strong> Kh\u00f4ng c\u1ea7n \u0111\u1ea7m, l\u1ea5p k\u00edn khe r\u1ed7ng ph\u1ee9c t\u1ea1p; gi\u1ea3m t\u1ea3i so v\u1edbi b\u00ea t\u00f4ng th\u01b0\u1eddng\/CFG; ki\u1ec3m so\u00e1t t\u1ed1t l\u01b0u l\u01b0\u1ee3ng qua \u1ed1ng b\u01a1m.<\/span><\/p>\n

V\u1eadt li\u1ec7u \u2013 thi\u1ebft b\u1ecb \u2013 c\u1ea5p ph\u1ed1i b\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u0111i\u1ec3n h\u00ecnh<\/span><\/strong><\/h2>\n

Concrete:<\/strong> PC40\/PCB40 th\u00f4ng d\u1ee5ng khu v\u1ef1c; c\u00f3 th\u1ec3 b\u1ed5 sung tro bay\/b\u1ed9t kho\u00e1ng theo thi\u1ebft k\u1ebf.<\/span><\/p>\n

B\u1ecdt t\u1ea1o kh\u00ed (foaming agent):<\/strong> ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p ASTM C869, ki\u1ec3m tra hi\u1ec7u n\u0103ng theo ASTM C796 (\u0111\u1ed9 \u1ed5n \u0111\u1ecbnh b\u1ecdt, suy gi\u1ea3m th\u1ec3 t\u00edch, v.v.).<\/span><\/p>\n

N\u01b0\u1edbc tr\u1ed9n:<\/strong> theo ti\u00eau chu\u1ea9n n\u01b0\u1edbc cho b\u00ea t\u00f4ng.<\/span><\/p>\n

Device<\/strong>: m\u00e1y t\u1ea1o b\u1ecdt, tr\u1ea1m tr\u1ed9n\/xe b\u1ed3n, b\u01a1m \u2013 \u1ed1ng m\u1ec1m DN38\u201365, c\u00e2n \u0111o m\u1eadt \u0111\u1ed9 hi\u1ec7n tr\u01b0\u1eddng.<\/span><\/p>\n

C\u1ea5p ph\u1ed1i \u0111\u1ecbnh h\u01b0\u1edbng (tham kh\u1ea3o \u2013 ch\u1ed1t theo th\u1eed tr\u1ed9n):<\/strong> w\/c 0,45\u20130,55; airflow\/foam ratio \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u1ea1t m\u1eadt \u0111\u1ed9 m\u1ee5c ti\u00eau. D\u00f9ng m\u1eabu th\u1eed nghi\u1ec7m t\u1ea1i x\u01b0\u1edfng & hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ec3 kh\u00f3a th\u00f4ng s\u1ed1.<\/span><\/p>\n

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Quy tr\u00ecnh \u0111\u1ed5 t\u1ea1i ch\u1ed7 c\u1ee7a b\u00ea t\u00f4ng b\u1ecdt kh\u00ed<\/span><\/strong><\/h2>\n

\u00c1p d\u1ee5ng cho c\u1ea3 m\u00e1i & l\u1ea5p r\u1ed7ng, \u0111i\u1ec1u ch\u1ec9nh ti\u1ec3u ti\u1ebft theo h\u1ed3 s\u01a1.<\/span><\/p>\n

1) Kh\u1ea3o s\u00e1t & b\u1ecbt k\u00edn:<\/strong> x\u00e1c \u0111\u1ecbnh khu v\u1ef1c, cao \u0111\u1ed9 \u2013 \u0111\u1ed9 d\u1ed1c; b\u1ecbt k\u00edn m\u00e9p, l\u1ed7 xuy\u00ean s\u00e0n\/\u1ed1ng ch\u1edd, khe ti\u1ebfp gi\u00e1p \u0111\u1ec3 kh\u00f4ng r\u00f2 v\u1eefa\/b\u1ecdt.
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2) Chu\u1ea9n b\u1ecb n\u1ec1n:<\/strong> v\u1ec7 sinh kh\u00f4 \u2013 s\u1ea1ch; cho m\u00e1i: l\u00f3t l\u1edbp ch\u1ed1ng th\u1ea5m s\u01a1 b\u1ed9 (primer\/m\u00e0ng) ho\u1eb7c l\u00e1ng t\u1ea1o ph\u1eb3ng m\u1ecfng tr\u01b0\u1edbc khi b\u01a1m.
\n<\/span><\/p>\n

3) L\u1eafp \u0111\u1eb7t \u1ed1ng b\u01a1m & be v\u00e1n:<\/strong> chia \u00f4 b\u01a1m h\u1ee3p l\u00fd (15\u201325 m\u00b2\/\u0111i\u1ec3m x\u1ea3 cho m\u00e1i; theo tuy\u1ebfn r\u1ed7ng \u0111\u1ed1i v\u1edbi void), b\u1ed1 tr\u00ed l\u1ed7 tho\u00e1t kh\u00ed tr\u00ean v\u00f9ng k\u00edn.
\n<\/span><\/p>\n

4) Tr\u1ed9n & t\u1ea1o b\u1ecdt:<\/strong> ki\u1ec3m tra t\u1ec9 tr\u1ecdng b\u1ecdt; c\u1ea5p foam \u0111\u1ec1u tr\u01b0\u1edbc mi\u1ec7ng b\u01a1m \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac l\u1ed7 r\u1ed7ng.
\n<\/span><\/p>\n

5) B\u01a1m \u2013 r\u1ea3i t\u1ef1 ch\u1ea3y:<\/strong> b\u01a1m li\u00ean t\u1ee5c; ki\u1ec3m so\u00e1t cao \u0111\u1ed9 b\u1eb1ng c\u1ecdc m\u1ed1c; kh\u00f4ng \u0111\u1ea7m \u2013 ch\u1ec9 g\u1ea1t nh\u1eb9.<\/span><\/p>\n

6) Ki\u1ec3m tra nhanh t\u1ea1i ch\u1ed7:<\/strong> m\u1eadt \u0111\u1ed9 t\u01b0\u01a1i (so s\u00e1nh v\u1edbi d\u1ea3i m\u1ee5c ti\u00eau), \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh b\u1ec1 m\u1eb7t; l\u1ea5y m\u1eabu n\u00e9n theo ASTM C495 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p th\u1eed trong TCVN 9030.<\/span><\/p>\n

7) B\u1ea3o d\u01b0\u1ee1ng & ho\u00e0n thi\u1ec7n:<\/strong> che ch\u1eafn 24\u201348 h; sau khi \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 t\u1ed1i thi\u1ec3u (th\u01b0\u1eddng 1\u20133 MPa theo y\u00eau c\u1ea7u s\u1eed d\u1ee5ng), thi c\u00f4ng ch\u1ed1ng th\u1ea5m ho\u00e0n thi\u1ec7n v\u00e0 l\u1edbp b\u1ea3o v\u1ec7.<\/span><\/p>\n

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B\u1ea3ng d\u1ea3i m\u1eadt \u0111\u1ed9 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u2013 \u1ee9ng d\u1ee5ng \u2013 ch\u1ec9 s\u1ed1 tham kh\u1ea3o<\/span><\/strong><\/h2>\n\n\n\n\n\n\n
D\u1ea3i m\u1eadt \u0111\u1ed9 (kg\/m\u00b3)<\/strong><\/th>\n\u1ee8ng d\u1ee5ng ch\u00ednh<\/strong><\/td>\nG\u1ee3i \u00fd \u0111\u1ed9 d\u00e0y<\/strong><\/td>\nCh\u1ec9 s\u1ed1 tham kh\u1ea3o<\/strong><\/td>\n<\/tr>\n
~400\u2013500<\/td>\nM\u00e1i ch\u1ed1ng n\u00f3ng, gi\u1ea3m t\u1ea3i m\u00e1i<\/td>\n40\u201360 mm<\/td>\nH\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t k c\u1ee1 0,1 W\/m\u00b7K<\/td>\n<\/tr>\n
~500\u2013600<\/td>\nM\u00e1i c\u00f3 l\u01b0u th\u00f4ng nh\u1eb9 \/ s\u00e0n k\u1ef9 thu\u1eadt<\/td>\n50\u201380 mm<\/td>\nk t\u0103ng theo m\u1eadt \u0111\u1ed9; kh\u00f3a b\u1eb1ng th\u1eed nghi\u1ec7m theo TCVN 9030<\/td>\n<\/tr>\n
~600\u2013800<\/td>\nL\u1ea5p h\u1ed1 r\u1ed7ng\/s\u1ee5t, b\u00f9 n\u1ec1n \u1ed1ng ng\u1ea7m<\/td>\nTheo th\u1ec3 t\u00edch r\u1ed7ng<\/td>\nD\u1ea3i n\u00e0y c\u00e2n b\u1eb1ng d\u1ec5 b\u01a1m\u2013\u0111\u1ed9 b\u1ec1n cho void filling theo th\u1ef1c h\u00e0nh c\u00f4ng nghi\u1ec7p.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ghi ch\u00fa: D\u1ea3i m\u1eadt \u0111\u1ed9 & k ch\u1ec9 mang t\u00ednh tham kh\u1ea3o; thi\u1ebft k\u1ebf cu\u1ed1i c\u00f9ng d\u1ef1a tr\u00ean th\u1eed m\u1eabu & y\u00eau c\u1ea7u s\u1eed d\u1ee5ng. T\u1ed5ng quan khoa h\u1ecdc x\u00e1c nh\u1eadn m\u1ed1i quan h\u1ec7 \u201cm\u1eadt \u0111\u1ed9 \u2191 \u2192 k \u2191; c\u01b0\u1eddng \u0111\u1ed9 \u2191\u201d.<\/span><\/em><\/p>\n

Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi \u0111\u1ed5 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed & c\u00e1ch tr\u00e1nh<\/span><\/strong><\/h2>\n

Nh\u1ea7m CLC (\u0111\u1ed5 t\u1ea1i ch\u1ed7) v\u1edbi AAC (g\u1ea1ch\/t\u1ea5m) \u2192 ch\u1ecdn sai v\u1eadt li\u1ec7u. Kh\u1eafc ph\u1ee5c: tham chi\u1ebfu TCVN 9029:2017 \u0111\u1ec3 ph\u00e2n lo\u1ea1i; m\u00f4 t\u1ea3 r\u00f5 \u201c\u0111\u1ed5 t\u1ea1i ch\u1ed7\u201d.<\/span><\/p>\n

Kh\u00f4ng b\u1ecbt k\u00edn m\u00e9p\/khe xuy\u00ean \u2192 r\u00f2 v\u1eefa\/b\u1ecdt. Kh\u1eafc ph\u1ee5c: be v\u00e1n, tr\u00e1m k\u00edn tr\u01b0\u1edbc khi b\u01a1m.<\/span><\/p>\n

Kh\u00f4ng \u0111o m\u1eadt \u0111\u1ed9 t\u01b0\u01a1i \u2192 l\u1ec7ch d\u1ea3i thi\u1ebft k\u1ebf. Kh\u1eafc ph\u1ee5c: c\u00e2n\u2013\u0111o theo \u00f4 ti\u00eau chu\u1ea9n m\u1ed7i 10\u201315 m\u00b3.<\/span><\/p>\n

B\u1ecf qua ch\u1ed1ng th\u1ea5m m\u00e1i \u2192 th\u1ea5m ng\u01b0\u1ee3c. Kh\u1eafc ph\u1ee5c: h\u1ec7 th\u1ed1ng ch\u1ed1ng th\u1ea5m \u0111\u1ea1t chu\u1ea9n sau 24\u201348 h.<\/span><\/p>\n

Kh\u00f4ng l\u1ea5y m\u1eabu n\u00e9n \u2192 thi\u1ebfu d\u1eef li\u1ec7u nghi\u1ec7m thu. Kh\u1eafc ph\u1ee5c: \u0111\u00fac m\u1eabu v\u00e0 th\u1eed theo ASTM C495\/TCVN 9030.<\/span><\/p>\n

\"\"<\/p>\n

Gi\u00e1 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u0110\u00e0 N\u1eb5ng & ph\u1ea1m vi ph\u1ee5c v\u1ee5<\/span><\/strong><\/h2>\n

Gi\u00e1 ph\u1ee5 thu\u1ed9c: m\u1eadt \u0111\u1ed9 m\u1ee5c ti\u00eau, chi\u1ec1u d\u00e0y\/kh\u1ed1i l\u01b0\u1ee3ng, c\u1ef1 ly b\u01a1m\u2013\u0111\u01b0\u1eddng \u1ed1ng, c\u1ea5u h\u00ecnh m\u00e1i\/void, l\u1ecbch thi c\u00f4ng & ch\u1ed1ng th\u1ea5m \u0111i k\u00e8m. V\u1edbi \u0111\u1eb7c th\u00f9 \u0111\u1eb7t h\u00e0ng theo d\u1ea3i m\u1eadt \u0111\u1ed9\u2013t\u00ednh n\u0103ng, vui l\u00f2ng g\u1eedi b\u1ea3n v\u1ebd & \u1ea3nh hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ec3 Dufago kh\u00f3a c\u1ea5p ph\u1ed1i \u2013 b\u00e1o gi\u00e1 trong 2 gi\u1edd (\u0110\u00e0 N\u1eb5ng, Qu\u1ea3ng Nam, Qu\u1ea3ng Ng\u00e3i).<\/span><\/p>\n

See more:<\/span> B\u00e1o gi\u00e1 b\u00ea t\u00f4ng t\u01b0\u01a1i \u2013 B\u00ea t\u00f4ng Dufago \u0110\u00e0 N\u1eb5ng<\/a><\/span><\/strong><\/p>\n

\n
\n
Nh\u1eefng c\u00e2u h\u1ecfi nhanh li\u00ean quan \u0111\u1ebfn \u0111\u1ed5 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed<\/span><\/strong><\/div>\n<\/div>\n<\/div>\n

1) B\u00ea t\u00f4ng b\u1ecdt kh\u00ed c\u00f3 nh\u1eb9 h\u01a1n b\u00ea t\u00f4ng th\u01b0\u1eddng bao nhi\u00eau?<\/strong>
\nNh\u1eb9 \u0111\u00e1ng k\u1ec3 (v\u00ed d\u1ee5 d \u2248 400\u2013800 kg\/m\u00b3 so v\u1edbi ~2400 kg\/m\u00b3 b\u00ea t\u00f4ng n\u1eb7ng)<\/span><\/p>\n

2) M\u00e1i c\u1ea7n d\u00e0y bao nhi\u00eau \u0111\u1ec3 ch\u1ed1ng n\u00f3ng?<\/strong>
\nPh\u1ed5 bi\u1ebfn 40\u201380 mm t\u00f9y \u0111\u1ed9 d\u1ed1c & l\u1edbp ho\u00e0n thi\u1ec7n; kho\u00e1 theo th\u1eed nghi\u1ec7m h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (TCVN 9030) v\u00e0 ti\u00eau ch\u00ed s\u1eed d\u1ee5ng m\u00e1i.<\/span><\/p>\n

3) C\u00f3 th\u1eed ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7n tr\u01b0\u1eddng kh\u00f4ng?<\/strong>
\nC\u00f3: \u0111o m\u1eadt \u0111\u1ed9 t\u01b0\u01a1i; l\u1ea5y m\u1eabu n\u00e9n theo ASTM C495 (v\u1edbi b\u00ea t\u00f4ng nh\u1eb9 c\u00e1ch nhi\u1ec7t) ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p trong TCVN 9030.<\/span><\/p>\n

4) D\u00f9ng cho l\u1ea5p h\u1ed1 r\u1ed7ng c\u00f3 c\u1ea7n \u0111\u1ea7m kh\u00f4ng?<\/strong>
\nKh\u00f4ng; v\u1eadt li\u1ec7u t\u1ef1 ch\u1ea3y \u2013 l\u1ea5p k\u00edn. C\u00f4ng nghi\u1ec7p th\u01b0\u1eddng ch\u1ecdn 600\u2013800 kg\/m\u00b3 \u0111\u1ec3 c\u00e2n b\u1eb1ng \u0111\u1ed9 b\u1ec1n & d\u1ec5 b\u01a1m.<\/span><\/p>\n

5) Ch\u1ec9 s\u1ed1 c\u00e1ch nhi\u1ec7t \u0111i\u1ec3n h\u00ecnh l\u00e0 bao nhi\u00eau?<\/strong>
\nT\u00e0i li\u1ec7u \u1ee9ng d\u1ee5ng m\u00e1i cho bi\u1ebft \u1edf 400\u2013600 kg\/m\u00b3, k \u2248 0,1 W\/m\u00b7K (tham kh\u1ea3o; c\u1ea7n th\u1eed nghi\u1ec7m cho c\u1ea5p ph\u1ed1i c\u1ee5 th\u1ec3).\u00a0<\/span><\/p>\n

Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh:<\/span><\/strong><\/p>\n

ACI 523.3R-14 \u2013 Guide for Cellular Concretes >50 lb\/ft\u00b3 (800 kg\/m\u00b3)<\/i>: kh\u00e1i ni\u1ec7m, d\u1ea3i m\u1eadt \u0111\u1ed9 & \u1ee9ng d\u1ee5ng cellular concrete. Vi\u1ec7n B\u00ea T\u00f4ng M\u1ef9<\/a><\/span><\/p>\n

ASTM C869\/C796 \u2013 Foaming agents<\/i> (spec & test): l\u1ef1a ch\u1ecdn & th\u1eed nghi\u1ec7m ch\u1ea5t t\u1ea1o b\u1ecdt. ASTM International | ASTM+1<\/a><\/span><\/p>\n

ASTM C495\/C495M \u2013 Compressive Strength of Lightweight Insulating Concrete<\/i>: th\u1eed n\u00e9n cho foamed concrete c\u00e1ch nhi\u1ec7t. iTeh Standards<\/a><\/span><\/p>\n

TCVN 9029:2017 \u2013 B\u00ea t\u00f4ng nh\u1eb9 \u2013 S\u1ea3n ph\u1ea9m b\u00ea t\u00f4ng b\u1ecdt & b\u00ea t\u00f4ng kh\u00ed kh\u00f4ng ch\u01b0ng \u00e1p<\/i>: ph\u00e2n lo\u1ea1i \u2013 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt s\u1ea3n ph\u1ea9m li\u00ean quan. TH\u01af VI\u1ec6N PH\u00c1P LU\u1eacT<\/a>
\n<\/a><\/span><\/p>\n

TCVN 9030:2017 \u2013 B\u00ea t\u00f4ng nh\u1eb9 \u2013 Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/i>: c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n, kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch, h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t. Caselaw<\/a><\/span><\/p>","protected":false},"excerpt":{"rendered":"

B\u00ea t\u00f4ng b\u1ecdt kh\u00ed \u0111ang n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p v\u1eadt li\u1ec7u \u0111\u1ed9t ph\u00e1, mang \u0111\u1ebfn nhi\u1ec1u \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi b\u00ea t\u00f4ng truy\u1ec1n th\u1ed1ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 b\u00ea t\u00f4ng b\u1ecdt kh\u00ed hay c\u00f2n g\u1ecdi l\u00e0 b\u00ea t\u00f4ng nh\u1eb9. Kh\u00e1i ni\u1ec7m b\u00ea t\u00f4ng […]<\/p>","protected":false},"author":7,"featured_media":9407,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47,35],"tags":[],"class_list":["post-9395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-trong-nganh","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/posts\/9395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/comments?post=9395"}],"version-history":[{"count":5,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/posts\/9395\/revisions"}],"predecessor-version":[{"id":9406,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/posts\/9395\/revisions\/9406"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/media\/9407"}],"wp:attachment":[{"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/media?parent=9395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/categories?post=9395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dufago.com.vn\/en\/wp-json\/wp\/v2\/tags?post=9395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}