{"id":7520,"date":"2021-05-27T02:51:48","date_gmt":"2021-05-27T02:51:48","guid":{"rendered":"https:\/\/thuvienxaydung.com.vn\/?p=7520"},"modified":"2021-05-27T03:17:19","modified_gmt":"2021-05-27T03:17:19","slug":"thi-nghiem-vat-lieu-xay-dung-la-gi","status":"publish","type":"post","link":"https:\/\/tailieuxaydung.net\/?p=7520","title":{"rendered":"Th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 g\u00ec ? C\u00e1c quy \u0111\u1ecbnh v\u1ec1 l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m"},"content":{"rendered":"

V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 b\u1ea5t k\u1ef3 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch x\u00e2y d\u1ef1ng. Nhi\u1ec1u ch\u1ea5t hi\u1ec7n di\u1ec7n trong t\u1ef1 nhi\u00ean, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ea5t s\u00e9t, \u0111\u00e1, c\u00e1t, v\u00e0 g\u1ed7, th\u1eadm ch\u00ed c\u00e0nh c\u00e2y v\u00e0 l\u00e1, \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c t\u00f2a nh\u00e0. Ngo\u00e0i c\u00e1c v\u1eadt li\u1ec7u t\u1ef1 nhi\u00ean, nhi\u1ec1u s\u1ea3n ph\u1ea9m nh\u00e2n t\u1ea1o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, m\u1ed9t s\u1ed1 t\u1ed5ng h\u1ee3p \u00edt ho\u1eb7c nhi\u1ec1u. S\u1ea3n xu\u1ea5t c\u00e1c v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 m\u1ed9t ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u1edf nhi\u1ec1u n\u01b0\u1edbc v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00e1ch ra th\u00e0nh c\u00e1c ng\u00e0nh ngh\u1ec1 chuy\u00ean m\u00f4n c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 ngh\u1ec1 m\u1ed9c, c\u00e1ch nhi\u1ec7t, h\u1ec7 th\u1ed1ng \u1ed1ng n\u01b0\u1edbc, v\u00e0 c\u00f4ng vi\u1ec7c l\u1ee3p m\u00e1i. Ch\u00fang cung c\u1ea5p th\u00e0nh ph\u1ea7n c\u1ee7a n\u01a1i sinh ho\u1ea1t v\u00e0 c\u00e1c c\u1ea5u tr\u00fac bao g\u1ed3m c\u1ea3 nh\u00e0.<\/p>\n

Ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u l\u00e0 ti\u1ec1n \u0111\u1ec1 t\u1ea1o n\u00ean ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng. B\u1edfi v\u1eady vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u1ea1t ti\u00eau chu\u1ea9n l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c trong x\u00e2y d\u1ef1ng. C\u0169ng\u00a0Theo quy \u0111\u1ecbnh chu\u1ea9n c\u1ee7a B\u1ed9 X\u00e2y D\u1ef1ng th\u00ec t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o thi c\u00f4ng \u0111\u1ec1u ph\u1ea3i ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c duy\u1ec7t c\u0169ng nh\u01b0 \u0111\u01b0\u1ee3c ch\u1ee7 \u0111\u1ea7u t\u01b0 v\u00e0 \u0111\u01a1n v\u1ecb t\u01b0 v\u1ea5n gi\u00e1m s\u00e1t thi c\u00f4ng c\u00f4ng tr\u00ecnh \u0111\u1ed3ng \u00fd.<\/p>\n

Tuy nhi\u00ean trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng th\u00ec c\u1ea7n c\u00f3 ti\u00eau chu\u1ea9n \u0111\u00e1ng gi\u00e1 ch\u00fang ch\u00ednh v\u00ec v\u1eady m\u00e0 b\u00e0i vi\u1ebft sau \u0111\u00e2y n\u1ebfu r\u00f5 v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n

Th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 g\u00ec?<\/h2>\n

Th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng ch\u00ednh l\u00e0 ho\u1ea1t \u0111\u1ed9ng ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng \u00e1p d\u1ee5ng v\u1edbi c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng d\u00e2n d\u1ee5ng, c\u00f4ng nghi\u1ec7p, giao th\u00f4ng, c\u00e1c c\u00f4ng tr\u00ecnh h\u1ea1 t\u1ea7ng k\u1ef9 thu\u1eadt\u2026.<\/p>\n

K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m l\u00e0 c\u0103n c\u1ee9 \u0111\u1ec3 ch\u1ee7 \u0111\u1ea7u t\u01b0 \u0111\u00e1nh gi\u00e1 th\u1ea9m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c nguy\u00ean v\u1eadt li\u1ec7u \u0111ang s\u1eed d\u1ee5ng c\u00f3 \u0111\u1ea1t y\u00eau c\u1ea7u, ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ea3m b\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n kh\u00f4ng.<\/p>\n

Th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 y\u00eau c\u1ea7u quan tr\u1ecdng v\u00e0 ti\u00ean quy\u1ebft \u0111\u1ec3 t\u1ea1o n\u00ean ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng.<\/p>\n

Tr\u01b0\u1edbc khi \u0111\u01b0a v\u1eadt li\u1ec7u v\u00e0o s\u1eed d\u1ee5ng: vi\u1ec7c th\u00ed nghi\u1ec7m ki\u1ec3m tra \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u s\u1ebd \u0111\u1ea3m b\u1ea3o cho s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh k\u1ecbp th\u1eddi c\u1ee7a ch\u1ee7 \u0111\u1ea7u t\u01b0, nh\u1eb1m \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao nh\u1ea5t tr\u00e1nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd v\u00e0 c\u00f4ng n\u0103ng c\u1ee7a c\u00f4ng tr\u00ecnh.<\/p>\n

Kh\u00f4ng ch\u1ec9 v\u1eady, c\u00e1c c\u00f4ng tr\u00ecnh \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u0169ng n\u00ean th\u1ef1c hi\u1ec7n c\u00f4ng t\u00e1c th\u00ed nghi\u1ec7m \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7n tr\u1ea1ng c\u00f4ng tr\u00ecnh.<\/p>\n

M\u1ee5c \u0111\u00edch v\u00e0 vai tr\u00f2 c\u1ee7a ho\u1ea1t \u0111\u1ed9ng th\u00ed nghi\u1ec7m ki\u1ec3m \u0111\u1ecbnh v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng<\/h2>\n

a. Nh\u1eb1m thay \u0111\u1ed5i c\u00f4ng n\u0103ng c\u1ee7a c\u00f4ng tr\u00ecnh<\/h3>\n

Ch\u1ee7 s\u1edf h\u1eefu c\u00f3 nhu c\u1ea7u thay \u0111\u1ed5i m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh nh\u01b0: chuy\u1ec3n \u0111\u1ed5i nh\u00e0 \u1edf th\u00e0nh nh\u00e0 h\u00e0ng, th\u00e0nh kho ch\u1ee9a h\u00e0ng, chuy\u1ec3n v\u0103n ph\u00f2ng th\u00e0nh kh\u00e1ch s\u1ea1n nh\u00e0 ngh\u1ec9\u2026.<\/p>\n

\u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c vi\u1ec7c n\u00e0y, b\u1eaft bu\u1ed9c ng\u01b0\u1eddi s\u1eed d\u1ee5ng ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m ki\u1ec3m \u0111\u1ecbnh th\u00f4ng qua c\u00e1c Trung t\u00e2m th\u00ed nghi\u1ec7m, ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u1ea5p gi\u1ea5y ph\u00e9p c\u1ee7a B\u1ed9 X\u00e2y D\u1ef1ng nh\u1eb1m \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 s\u1ef1 an to\u00e0n c\u1ee7a c\u00f4ng tr\u00ecnh sau chuy\u1ec3n \u0111\u1ed5i c\u00f4ng n\u0103ng.<\/p>\n

b. Th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng nh\u1eb1m ph\u00e1t hi\u1ec7n nguy\u00ean nh\u00e2n s\u1ef1 c\u1ed1 k\u1ecbp th\u1eddi<\/h3>\n

Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u00e1c c\u00f4ng tr\u00ecnh \u0111ang g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 s\u1ef1 c\u1ed1 nh\u01b0ng kh\u00f3 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 d\u1ef1 \u0111o\u00e1n nguy\u00ean nh\u1eadn \u0111\u01b0\u1ee3c nh\u01b0: do k\u1ebft c\u1ea5u, s\u1ee5t l\u00fan\u2026.<\/p>\n

Ch\u00ednh v\u00ec v\u1eady, th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u ch\u00ednh l\u00e0 c\u00e1ch x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n hi\u1ec7u qu\u1ea3 v\u00e0 nhanh ch\u00f3ng v\u00e0 an to\u00e0n nh\u1ea5t.<\/p>\n

c. Th\u00ed nghi\u1ec7m \u0111\u1ec3 gi\u1ea3i quy\u1ebft tranh ch\u1ea5p<\/h3>\n

Tr\u01b0\u1eddng h\u1ee3p c\u00f3 s\u1ef1 tranh ch\u1ea5p gi\u1eefa ch\u1ee7 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 th\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng thi c\u00f4ng th\u00ec c\u00f4ng t\u00e1c ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u s\u1ebd c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 kh\u00e1ch quan nh\u1ea5t.<\/p>\n

\u0110\u01a1n v\u1ecb thi c\u00f4ng c\u00f3 s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c ti\u00eau chu\u1ea9n m\u00e0 nh\u00e0 th\u1ea7u y\u00eau c\u1ea7u hay kh\u00f4ng, t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c l\u1ed7i thu\u1ed9c v\u1ec1 \u0111\u01a1n v\u1ecb thi c\u00f4ng hay kh\u00f4ng.<\/p>\n

Quy tr\u00ecnh ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i c\u00e1c\u00a0ph\u00f2ng th\u00ed nghi\u1ec7m<\/strong>\u00a0c\u00f3 \u0111\u1ea7y \u0111\u1ee7 n\u0103ng l\u1ef1c.<\/p>\n

V\u00e0 vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u v\u00e0 Quy c\u00e1ch c\u0169ng nh\u01b0 quy tr\u00ecnh l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m \u0111\u1ed1i v\u1edbi t\u1eebng lo\u1ea1i v\u1eadt li\u1ec7u c\u0169ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nh\u1eefng quy \u0111\u1ecbnh d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n

Xi m\u0103ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 6260-1995 .M\u1ed7i l\u00f4\u00a0xi m\u0103ng\u00a0nh\u1ecf h\u01a1n 40 t\u1ea5n \u0111\u1ec1u ph\u1ea3i l\u1ea5y 02 m\u1eabu, m\u1ed7i m\u1eabu 20kg \u0111\u1ec3 l\u00e0m th\u00ed nghi\u1ec7m. M\u1eabu xi m\u0103ng ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ea5y r\u1ea3i r\u00e1c \u1edf c\u00e1c bao trong kho, m\u1ed7i bao l\u1ea5y 1kg. L\u00e0m th\u00ed nghi\u1ec7m 01 m\u1eabu v\u00e0 01 m\u1eabu l\u01b0u \u0111\u1ec3 \u0111\u1ed1i ch\u1ee9ng khi c\u1ea7n thi\u1ebft. Trong th\u1eddi gian 60 ng\u00e0y n\u1ebfu kh\u00f4ng c\u00f3 khi\u1ebfu n\u1ea1i n\u00e0o gi\u1eefa b\u00ean mua v\u00e0 b\u00e1n xi m\u0103ng v\u1ec1 k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m th\u00ec ph\u00f2ng th\u00ed nghi\u1ec7m l\u00e0m th\u1ee7 t\u1ee5c h\u1ee7y b\u1ecf m\u1eabu l\u01b0u.<\/p>\n

Th\u00ed nghi\u1ec7m kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a xi m\u0103ng<\/em><\/strong><\/p>\n

Khi b\u1eaft \u0111\u1ea7u nh\u1eadp xi m\u0103ng v\u1ec1 c\u00f4ng tr\u01b0\u1eddng \u0111\u1ea1i di\u1ec7n b\u00ean A, b\u00ean B c\u00f9ng nhau l\u1ea5y m\u1eabu \u0111\u00f3ng g\u00f3i ni\u00eam phong l\u1eadp bi\u00ean b\u1ea3n l\u1ea5y m\u1eabu v\u00e0 g\u1eedi \u0111\u1ebfn ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec3 l\u00e0m\u00a0th\u00ed nghi\u1ec7m xi m\u0103ng. M\u1eabu xi m\u0103ng ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ec3 trong h\u1ed9p k\u00edn tr\u00e1nh n\u01b0\u1edbc, tr\u00e1nh c\u00e1c h\u00f3a ch\u1ea5t kh\u00e1c, tr\u00e1nh nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u0111\u1ec3 n\u01a1i kh\u00f4 r\u00e1o.
\nM\u1ed7i m\u1eabu th\u00ed nghi\u1ec7m ph\u1ea3i l\u00e0m \u00edt nh\u1ea5t 5 ch\u1ec9 ti\u00eau quy \u0111\u1ecbnh trong b\u1ea3ng 1 (c\u1ee7a TCVN 6260-1995).<\/p>\n

C\u00e1t x\u00e2y d\u1ef1ng\u00a0(\u0111\u1ed5 b\u00ea t\u00f4ng)<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 7570:2006.
\nC\u1ee9 350m3 (ho\u1eb7c 500 t\u1ea5n) c\u00e1t l\u1ea5y m\u1ed9t m\u1eabu th\u1eed v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng 100kg, l\u1ea5y r\u1ea3i r\u00e1c \u1edf nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau trong m\u1ed9t \u0111\u1ed1ng c\u00e1t c\u00f9ng lo\u1ea1i, g\u00f3p l\u1ea1i v\u00e0 tr\u1ed9n \u0111\u1ec1u, \u0111\u00f3ng g\u00f3i v\u00e0 l\u1eadp bi\u00ean b\u1ea3n l\u1ea5y m\u1eabu, mang \u0111i th\u00ed nghi\u1ec7m.<\/p>\n

\u0110\u00e1 d\u0103m (s\u1ecfi) c\u00e1c lo\u1ea1i d\u00f9ng trong\u00a0b\u00ea t\u00f4ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 7572:2006.
\nC\u1ee9 nh\u1ecf h\u01a1n 200m3 \u0111\u00e1 l\u1ea5y 01 m\u1eabu th\u1eed v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng t\u1eeb 100-200kg t\u00f9y theo c\u1ee1 h\u1ea1t. L\u1ea5y r\u1ea3i r\u00e1c \u1edf nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau trong m\u1ed9t \u0111\u1ed1ng \u0111\u00e1 c\u00f9ng lo\u1ea1i, g\u00f3p l\u1ea1i tr\u1ed9n \u0111\u1ec1u, \u0111\u00f3ng g\u00f3i, l\u1eadp bi\u00ean b\u1ea3n l\u1ea5y m\u1eabu, mang \u0111i th\u00ed nghi\u1ec7m.<\/p>\n

\u0110\u1ea5t \u0111\u1eafp n\u1ec1n<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 5747:1993 v\u00e0 TCVN 4447:2012.
\nC\u1ee9 1 l\u00f4 10.000m3 l\u1ea5y m\u1eabu 1 l\u1ea7n, m\u1ed7i m\u1eabu 50kg. M\u1ed7i l\u00f4 nh\u1ecf h\u01a1n 10.000m3 v\u1eabn xem nh\u01b0 1 l\u00f4.<\/p>\n

\u0110\u1ed9 ch\u1eb7t \u0111\u1eafp n\u1ec1n, \u0111\u1ed9 ch\u1eb7t c\u1ee7a c\u00e1c l\u1edbp m\u00f3ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng 22TCN 211:06 v\u00e0 TCVN 8730:2012.
\nC\u1ee9 500m2 l\u1ea5y m\u1eabu 1 \u0111i\u1ec3m.<\/p>\n

Ti\u00eau chu\u1ea9n L\u1ea5y m\u1eabu\u00a0Th\u00e9p h\u00ecnh\u00a0k\u1ebft c\u1ea5u\u00a0x\u00e2y d\u1ef1ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng 1651:2009.
\nC\u1ee9 m\u1ed7i l\u00f4 th\u00e9p c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng <=50 t\u1ea5n, c\u1ea7n l\u1ea5y 01 nh\u00f3m m\u1eabu th\u1eed \u0111\u1ec3 ki\u1ec3m tra, bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee7ng lo\u1ea1i c\u1ed1t th\u00e9p trong l\u00f4, m\u1ed7i lo\u1ea1i l\u1ea5y 03 thanh d\u00e0i t\u1eeb 0,5m-0,8m. C\u00e1c ch\u1ec9 ti\u00eau c\u01a1 l\u00fd khi th\u00ed nghi\u1ec7m th\u00e9p:
\n\u2013 Gi\u1edbi h\u1ea1n ch\u1ea3y, gi\u1edbi h\u1ea1n b\u1ec1n.
\n\u2013 \u0110\u1ed9 gi\u00e3n d\u00e0i.<\/p>\n

L\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m th\u00e9p h\u00ecnh theo ti\u00eau chu\u1ea9n 1651:2009<\/p>\n

Ti\u00eau chu\u1ea9n L\u1ea5y m\u1eabu\u00a0G\u1ea1ch x\u00e2y d\u1ef1ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 1450:2009 v\u00e0 TCVN 1451-1998.
\nC\u1ee9 m\u1ed7i l\u00f4 50.000 vi\u00ean g\u1ea1ch l\u1ea5y 01 m\u1eabu th\u1eed g\u1ed3m 30 vi\u00ean. M\u1ed7i l\u00f4 nh\u1ecf h\u01a1n 50.000 vi\u00ean xem nh\u01b0 m\u1ed9t l\u00f4. C\u00e1c ch\u1ec9 ti\u00eau c\u01a1 l\u00fd khi th\u00ed nghi\u1ec7m g\u1ea1ch:
\n\u2013 C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n;
\n\u2013 C\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n;
\n\u2013 Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch;
\n\u2013 H\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc;
\n\u2013 C\u00e1c khuy\u1ebft t\u1eadt ngo\u1ea1i quan.<\/p>\n

G\u1ea1ch b\u00ea t\u00f4ng t\u1ef1 ch\u00e8n, g\u1ea1ch b\u00ea t\u00f4ng l\u00e1t<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 6476-1999.
\nC\u1ee9 m\u1ed9t l\u00f4 15.000 vi\u00ean l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu g\u1ed3m 20 vi\u00ean. M\u1ed9t l\u00f4 nh\u1ecf h\u01a1n 15.000 vi\u00ean xem nh\u01b0 m\u1ed9t l\u00f4. Ki\u1ec3m tra c\u00e1c ch\u1ec9 ti\u00eau c\u01a1 l\u00fd theo TCVN 6476-1999.<\/p>\n

Ti\u00eau chu\u1ea9n L\u1ea5y m\u1eabu B\u00ea t\u00f4ng<\/strong><\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 4453:1995.
\nTrong qu\u00e1 tr\u00ecnh thi c\u00f4ng x\u00e2y d\u1ef1ng c\u00e1n b\u1ed9 gi\u00e1m s\u00e1t c\u1ee7a Ch\u1ee7 \u0111\u1ea7u t\u01b0 (ho\u1eb7c TVGS) v\u00e0 c\u00e1n b\u1ed9 k\u1ef9 thu\u1eadt thi c\u00f4ng c\u1ee7a nh\u00e0 th\u1ea7u x\u00e2y d\u1ef1ng ph\u1ea3i l\u1ea5y m\u1eabu b\u00ea t\u00f4ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. C\u00e1n b\u1ed9 k\u1ef9 thu\u1eadt c\u1ee7a Ch\u1ee7 \u0111\u1ea7u t\u01b0 (ho\u1eb7c TVGS) k\u00fd x\u00e1c nh\u1eadn tr\u00ean tem v\u00e0 d\u00e1n l\u00ean m\u1eabu ngay sau khi v\u1eeba \u0111\u00fac m\u1eabu b\u00ea t\u00f4ng (khi b\u00ea t\u00f4ng c\u00f2n \u01b0\u1edbt).\u00a0Th\u00ed nghi\u1ec7m \u00e9p m\u1eabu b\u00ea t\u00f4ng\u00a0\u1edf tu\u1ed5i t\u1eeb 07ng\u00e0y, 28ng\u00e0y.
\nM\u1ed7i lo\u1ea1i c\u1ea5u ki\u1ec7n b\u00ea t\u00f4ng ph\u1ea3i l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu g\u1ed3m 03 vi\u00ean m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y c\u00f9ng m\u1ed9t l\u00fac \u1edf c\u00f9ng m\u1ed9t ch\u1ed7 theo quy \u0111\u1ecbnh c\u1ee7a TCVN 3105:1993. K\u00edch th\u01b0\u1edbc vi\u00ean m\u1eabu 10x10x10cm ho\u1eb7c 15x15x15cm. S\u1ed1 l\u01b0\u1ee3ng t\u1ed5 m\u1eabu \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh theo kh\u1ed1i l\u01b0\u1ee3ng nh\u01b0 sau:
\n\u2013 \u0110\u1ed1i v\u1edbi b\u00ea t\u00f4ng kh\u1ed1i l\u1edbn: c\u1ee9 500m3 l\u1ea5y 01 t\u1ed5 m\u1eabu khi kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng trong m\u1ed9t kh\u1ed1i \u0111\u1ed5 l\u1edbn h\u01a1n 1000m2 v\u00e0 c\u1ee9 250m3 l\u1ea5y 01 t\u1ed5 m\u1eabu khi kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng trong m\u1ed9t kh\u1ed1i \u0111\u1ed5 \u00edt h\u01a1n 1000m3.<\/p>\n

Ti\u00eau chu\u1ea9n l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m b\u00ea t\u00f4ng<\/p>\n

\u2013 \u0110\u1ed1i v\u1edbi c\u00e1c m\u00f3ng l\u1edbn: c\u1ee9 100m3 b\u00ea t\u00f4ng l\u1ea5y 01 t\u1ed5 m\u1eabu nh\u01b0ng kh\u00f4ng \u00edt h\u01a1n m\u1ed9t t\u1ed5 m\u1eabu cho m\u1ed9t kh\u1ed1i m\u00f3ng.
\n\u2013 \u0110\u1ed1i v\u1edbi b\u00ea t\u00f4ng m\u00f3ng b\u1ec7 m\u00e1y c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed5 l\u1edbn h\u01a1n 50m3 th\u00ec c\u1ee9 50 m3 l\u1ea5y 01 t\u1ed5 m\u1eabu nh\u01b0ng v\u1eabn l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu khi kh\u1ed1i l\u01b0\u1ee3ng \u00edt h\u01a1n 50m3.
\n\u2013 \u0110\u1ed1i v\u1edbi k\u1ebft c\u1ea5u c\u1ea5u khung c\u1ed9t, d\u1ea7m, s\u00e0n c\u1ee9 20m3 l\u1ea5y 01 t\u1ed5 m\u1eabu, nh\u01b0ng khi kh\u1ed1i l\u01b0\u1ee3ng \u00edt h\u01a1n th\u00ec v\u1eabn ph\u1ea3i l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu cho m\u1ed7i lo\u1ea1i c\u1ea5u ki\u1ec7n.
\n\u2013 \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ebft c\u1ea5u \u0111\u01a1n chi\u1ebfc kh\u00e1c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng \u00edt h\u01a1n th\u00ec v\u1eabn ph\u1ea3i l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu.
\n\u2013 \u0110\u1ed1i v\u1edbi b\u00ea t\u00f4ng n\u1ec1n, m\u1eb7t \u0111\u01b0\u1eddng,\u2026 c\u1ee9 200m3 l\u1ea5y 01 t\u1ed5 m\u1eabu nh\u01b0ng n\u1ebfu kh\u1ed1i l\u01b0\u1ee3ng b\u00ea t\u00f4ng \u00edt h\u01a1n 200m3 th\u00ec v\u1eabn ph\u1ea3i l\u1ea5y m\u1ed9t t\u1ed5 m\u1eabu.<\/p>\n

Ti\u00eau chu\u1ea9n L\u1ea5y m\u1eabu\u00a0V\u1eefa\u00a0x\u00e2y, tr\u00e1t:<\/strong><\/p>\n

\u2013 L\u1ea5y m\u1eabu v\u1eefa theo ti\u00eau chu\u1ea9n TCVN 3121-1993.
\n\u2013 M\u1ed7i h\u1ea1ng m\u1ee5c c\u00f4ng vi\u1ec7c x\u00e2y tr\u00e1t c\u00f4ng tr\u00ecnh nghi\u1ec7m thu l\u1ea5y 01 nh\u00f3m m\u1eabu.
\n\u2013 K\u00edch th\u01b0\u1edbc m\u1eabu 4x4x16cm ho\u1eb7c 7,07\u00d77,07\u00d77,07cm.<\/p>\n

B\u00e0i vi\u1ebft li\u00ean quan c\u00f9ng l\u0129nh v\u1ef1c t\u1ea1i Hosoxaydung.com<\/a><\/h2>\n
    \n
  1. \u0110\u01a1n gi\u00e1 th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng<\/a><\/li>\n
  2. M\u1eabu h\u1ee3p \u0111\u1ed3ng th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng<\/a><\/li>\n
  3. Danh s\u00e1ch c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn LAS-XD<\/a><\/li>\n
  4. C\u00e1c ti\u00eau chu\u1ea9n l\u1ea5y m\u1eabu th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng<\/a><\/li>\n
  5. H\u1ecfi \u0111\u00e1p v\u1ec1 th\u00ed nghi\u1ec7m v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng<\/a><\/li>\n<\/ol>\n

    C\u1ea3m \u01a1n c\u00e1c b\u1ea1n \u0111\u00e3 \u0111\u1ed3ng h\u00e0nh c\u00f9ng Hosoxaydung.com<\/a>. Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng !<\/p>\n","protected":false},"excerpt":{"rendered":"

    V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng l\u00e0 b\u1ea5t k\u1ef3 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch x\u00e2y d\u1ef1ng. Nhi\u1ec1u ch\u1ea5t hi\u1ec7n di\u1ec7n trong t\u1ef1 nhi\u00ean, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ea5t s\u00e9t, \u0111\u00e1, c\u00e1t, v\u00e0 g\u1ed7, th\u1eadm ch\u00ed c\u00e0nh c\u00e2y v\u00e0 l\u00e1, \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c t\u00f2a nh\u00e0. Ngo\u00e0i c\u00e1c v\u1eadt li\u1ec7u t\u1ef1 nhi\u00ean,…<\/p>\n","protected":false},"author":1,"featured_media":7529,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[312,126],"class_list":["post-7520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","tag-thi-nghiem-vat-lieu","tag-vat-lieu-xay-dung"],"_links":{"self":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7520","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=7520"}],"version-history":[{"count":9,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7520\/revisions"}],"predecessor-version":[{"id":7546,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/7520\/revisions\/7546"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/media\/7529"}],"wp:attachment":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}