{"id":9272,"date":"2025-08-06T16:07:18","date_gmt":"2025-08-06T09:07:18","guid":{"rendered":"https:\/\/dufago.com.vn\/?p=9272"},"modified":"2026-06-09T11:21:23","modified_gmt":"2026-06-09T04:21:23","slug":"5-cach-tinh-khoi-luong-be-tong-tuoi-can-dung-cho-cong-trinh","status":"publish","type":"post","link":"https:\/\/dufago.com.vn\/en\/5-cach-tinh-khoi-luong-be-tong-tuoi-can-dung-cho-cong-trinh\/","title":{"rendered":"C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng t\u01b0\u01a1i cho s\u00e0n, m\u00f3ng, d\u1ea7m, c\u1ed9t"},"content":{"rendered":"

Tr\u01b0\u1edbc khi \u0111\u1eb7t b\u00ea t\u00f4ng t\u01b0\u01a1i, b\u1ea1n c\u1ea7n bi\u1ebft c\u00f4ng tr\u00ecnh c\u1ea7n bao nhi\u00eau m\u00e9t kh\u1ed1i b\u00ea t\u00f4ng. \u0110\u1eb7t thi\u1ebfu c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n m\u1ea1ch \u0111\u1ed5, \u1ea3nh h\u01b0\u1edfng ti\u1ebfn \u0111\u1ed9 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng thi c\u00f4ng. \u0110\u1eb7t d\u01b0 qu\u00e1 nhi\u1ec1u l\u1ea1i l\u00e0m t\u0103ng chi ph\u00ed v\u00e0 kh\u00f3 x\u1eed l\u00fd ph\u1ea7n b\u00ea t\u00f4ng th\u1eeba.<\/span><\/strong><\/p>\n

C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng t\u01b0\u01a1i kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p n\u1ebfu b\u1ea1n chia c\u00f4ng tr\u00ecnh th\u00e0nh t\u1eebng h\u1ea1ng m\u1ee5c nh\u01b0 s\u00e0n, m\u00f3ng, d\u1ea7m, c\u1ed9t r\u1ed3i \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c th\u1ec3 t\u00edch t\u01b0\u01a1ng \u1ee9ng. Sau khi c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00fd thuy\u1ebft, c\u1ea7n c\u1ed9ng th\u00eam ph\u1ea7n hao h\u1ee5t theo ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng tr\u01b0\u1edbc khi ch\u1ed1t kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eb7t h\u00e0ng.<\/span><\/strong><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y h\u01b0\u1edbng d\u1eabn c\u00e1ch t\u00ednh b\u00ea t\u00f4ng theo m\u00b3 cho c\u00e1c h\u1ea1ng m\u1ee5c ph\u1ed5 bi\u1ebfn, k\u00e8m v\u00ed d\u1ee5 c\u1ee5 th\u1ec3 \u0111\u1ec3 b\u1ea1n d\u1ec5 \u00e1p d\u1ee5ng khi chu\u1ea9n b\u1ecb \u0111\u1ed5 b\u00ea t\u00f4ng.<\/span><\/strong><\/p>\n

\"\"<\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng t\u01b0\u01a1i c\u01a1 b\u1ea3n v\u00e0 t\u1ed5ng qu\u00e1t<\/span><\/strong><\/h2>\n

C\u00f4ng th\u1ee9c chung \u0111\u1ec3 t\u00ednh th\u1ec3 t\u00edch b\u00ea t\u00f4ng (Vbt\u200b) cho m\u1ecdi c\u1ea5u ki\u1ec7n h\u00ecnh kh\u1ed1i \u0111\u01a1n gi\u1ea3n l\u00e0:<\/span><\/p>\n

Vbt = Di\u1ec7n t\u00edch k\u1ebft c\u1ea5u x Chi\u1ec1u cao<\/span><\/strong><\/p>\n

ho\u1eb7c Vbt = Chi\u1ec1u d\u00e0i x Chi\u1ec1u r\u1ed9ng x Chi\u1ec1u cao<\/span><\/strong><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

– Vbt\u200b: Th\u1ec3 t\u00edch b\u00ea t\u00f4ng (\u0111\u01a1n v\u1ecb: m\u00e9t kh\u1ed1i – m3)<\/span><\/p>\n

– Di\u1ec7n t\u00edch k\u1ebft c\u1ea5u: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee7a c\u1ea5u ki\u1ec7n (m2)<\/span><\/p>\n

– Chi\u1ec1u d\u00e0i, Chi\u1ec1u r\u1ed9ng, Chi\u1ec1u cao: C\u00e1c k\u00edch th\u01b0\u1edbc c\u1ee7a c\u1ea5u ki\u1ec7n (\u0111\u01a1n v\u1ecb: m\u00e9t – m)<\/span><\/p>\n

1. C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng s\u00e0n<\/span><\/strong><\/h3>\n

S\u00e0n l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ea1ng m\u1ee5c c\u1ea7n t\u00ednh to\u00e1n nhi\u1ec1u nh\u1ea5t. C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed5 r\u1ea5t nhanh v\u00ec s\u00e0n l\u00e0 h\u00ecnh kh\u1ed1i \u0111\u01a1n gi\u1ea3n.<\/span><\/p>\n

Vs\u00e0n = T\u1ed5ng di\u1ec7n t\u00edch s\u00e0n x \u0110\u1ed9 d\u00e0y l\u1edbp b\u00ea t\u00f4ng<\/span><\/strong><\/p>\n

V\u00ed d\u1ee5: B\u1ea1n c\u1ea7n \u0111\u1ed5 s\u00e0n cho m\u1ed9t t\u1ea7ng nh\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc 5m x 10m v\u1edbi \u0111\u1ed9 d\u00e0y 12cm (0.12m).<\/span><\/p>\n

– T\u1ed5ng di\u1ec7n t\u00edch s\u00e0n: 5m \u00d7 10m = 50m2<\/span><\/p>\n

– \u0110\u1ed9 d\u00e0y l\u1edbp b\u00ea t\u00f4ng: 0.12m<\/span><\/p>\n

– Kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng = 50 x 0,12 = 6m\u00b3<\/span><\/p>\n

Nh\u01b0 v\u1eady, kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng l\u00fd thuy\u1ebft cho s\u00e0n l\u00e0 6m\u00b3. Sau \u0111\u00f3 c\u1ea7n c\u1ed9ng th\u00eam ph\u1ea7n hao h\u1ee5t theo ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng.<\/span><\/p>\n

2. C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng m\u00f3ng<\/span><\/strong><\/h3>\n

M\u00f3ng l\u00e0 ph\u1ea7n quan tr\u1ecdng nh\u1ea5t c\u1ee7a c\u00f4ng tr\u00ecnh, ch\u1ecbu to\u00e0n b\u1ed9 t\u1ea3i tr\u1ecdng. T\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i m\u00f3ng (m\u00f3ng \u0111\u01a1n, m\u00f3ng b\u0103ng, m\u00f3ng b\u00e8) m\u00e0 c\u00f4ng th\u1ee9c s\u1ebd kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch t\u00ednh ph\u1ed5 bi\u1ebfn cho m\u00f3ng b\u0103ng – lo\u1ea1i m\u00f3ng hay g\u1eb7p \u1edf nh\u00e0 ph\u1ed1.<\/span><\/p>\n

Vm\u00f3ng = T\u1ed5ng th\u1ec3 t\u00edch c\u00e1c d\u1ea7m m\u00f3ng + T\u1ed5ng th\u1ec3 t\u00edch c\u00e1c m\u00f3ng \u0111\u01a1n\/ \u0111\u00e1y m\u00f3ng<\/span><\/strong><\/p>\n

V\u00ed d\u1ee5: M\u1ed9t h\u1ec7 m\u00f3ng b\u0103ng ch\u1eef nh\u1eadt c\u00f3:<\/span><\/p>\n

– D\u1ea7m m\u00f3ng: 2 d\u1ea7m d\u00e0i 10m v\u00e0 2 d\u1ea7m d\u00e0i 5m, t\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 ti\u1ebft di\u1ec7n 0.3m x 0.5m.<\/span><\/p>\n

– \u0110\u00e1y m\u00f3ng: k\u00edch th\u01b0\u1edbc 5m x 10m x 0.2m<\/span><\/p>\n

T\u00ednh th\u1ec3 t\u00edch d\u1ea7m m\u00f3ng:<\/strong> V d\u1ea7m m\u00f3ng = (10m + 5m) x 2 x 0.3m x 0.5m = 15 x 2 x 0.15 = 4.5m3<\/span><\/p>\n

T\u00ednh th\u1ec3 t\u00edch \u0111\u00e1y m\u00f3ng:<\/strong> V \u0111\u00e1y m\u00f3ng = 10m x 5m x 0.2m = 10m3<\/span><\/p>\n

T\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng c\u1ea7n d\u00f9ng: <\/strong>V m\u00f3ng = 4.5 + 10 = 14.5m3<\/span><\/p>\n

\"\"<\/p>\n

3. C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng d\u1ea7m<\/span><\/strong><\/h3>\n

T\u01b0\u01a1ng t\u1ef1 nh\u01b0 t\u00ednh s\u00e0n, b\u1ea1n ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c th\u1ec3 t\u00edch c\u01a1 b\u1ea3n cho d\u1ea7m:<\/span><\/p>\n

Vd\u1ea7m = T\u1ed5ng chi\u1ec1u d\u00e0i d\u1ea7m x Chi\u1ec1u r\u1ed9ng d\u1ea7m x Chi\u1ec1u cao d\u1ea7m<\/span><\/strong><\/p>\n

V\u00ed d\u1ee5: M\u1ed9t d\u1ea7m c\u00f3 chi\u1ec1u d\u00e0i 8m, chi\u1ec1u r\u1ed9ng 20cm (0.2m) v\u00e0 chi\u1ec1u cao 30cm (0.3m).<\/span><\/p>\n

Vd\u1ea7m = 8 x 0.2 x 0.3 = 0.48m3<\/span><\/p>\n

N\u1ebfu c\u00f4ng tr\u00ecnh c\u00f3 nhi\u1ec1u d\u1ea7m, c\u1ea7n t\u00ednh t\u1eebng nh\u00f3m d\u1ea7m c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc r\u1ed3i c\u1ed9ng l\u1ea1i.<\/span><\/p>\n

4. C\u00e1ch t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng c\u1ed9t<\/span><\/strong><\/h3>\n

V\u1edbi c\u00e1c c\u1ed9t vu\u00f4ng ho\u1eb7c ch\u1eef nh\u1eadt, c\u00f4ng th\u1ee9c t\u00ednh r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/span><\/p>\n

Vc\u1ed9t = Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n c\u1ed9t x Chi\u1ec1u cao c\u1ed9t x S\u1ed1 l\u01b0\u1ee3ng c\u1ed9t<\/span><\/strong><\/p>\n

V\u00ed d\u1ee5: B\u1ea1n c\u1ea7n \u0111\u1ed5 4 c\u1ed9t vu\u00f4ng c\u00f3 k\u00edch th\u01b0\u1edbc 20cm x 20cm v\u00e0 chi\u1ec1u cao 3.5m.<\/span><\/p>\n

– Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n = 0.2 \u00d7 0.2 = 0.04m2<\/span><\/p>\n

– Chi\u1ec1u cao = 3.5m<\/span><\/p>\n

– S\u1ed1 l\u01b0\u1ee3ng c\u1ed9t = 4<\/span><\/p>\n

– Vc\u1ed9t = 0.04 x 3.5 x 4 = 0.56m3<\/span><\/p>\n

V\u1edbi c\u1ed9t tr\u00f2n, c\u1ea7n d\u00f9ng c\u00f4ng th\u1ee9c di\u1ec7n t\u00edch h\u00ecnh tr\u00f2n r\u1ed3i nh\u00e2n v\u1edbi chi\u1ec1u cao v\u00e0 s\u1ed1 l\u01b0\u1ee3ng c\u1ed9t.<\/span><\/p>\n

\"\"<\/p>\n

Sau khi t\u00ednh xong c\u1ea7n c\u1ed9ng hao h\u1ee5t bao nhi\u00eau?<\/span><\/strong><\/h2>\n

Sau khi t\u00ednh \u0111\u01b0\u1ee3c t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng l\u00fd thuy\u1ebft, kh\u00f4ng n\u00ean \u0111\u1eb7t h\u00e0ng \u0111\u00fang b\u1eb1ng con s\u1ed1 \u0111\u00f3 ngay. C\u1ea7n c\u1ed9ng th\u00eam ph\u1ea7n hao h\u1ee5t theo ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng.<\/span><\/p>\n

Hao h\u1ee5t c\u00f3 th\u1ec3 ph\u00e1t sinh do b\u00ea t\u00f4ng d\u00ednh b\u1ed3n xe, d\u00ednh \u0111\u01b0\u1eddng \u1ed1ng b\u01a1m, r\u01a1i v\u00e3i, c\u1ed1p pha n\u1edf, n\u1ec1n l\u00fan ho\u1eb7c sai s\u1ed1 k\u00edch th\u01b0\u1edbc th\u1ef1c t\u1ebf.<\/span><\/p>\n

Thay v\u00ec d\u00f9ng m\u1ed9t con s\u1ed1 chung cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p, n\u00ean c\u1ed9ng hao h\u1ee5t theo ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng. V\u00ed d\u1ee5:<\/span><\/p>\n