{"id":27425,"date":"2020-04-03T16:05:00","date_gmt":"2020-04-03T09:05:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=27425"},"modified":"2021-11-05T16:27:24","modified_gmt":"2021-11-05T09:27:24","slug":"xi-mang-chiu-man-cho-cac-cong-trinh-ven-bien","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/xi-mang-chiu-man-cho-cac-cong-trinh-ven-bien\/","title":{"rendered":"Xi m\u0103ng ch\u1ecbu m\u1eb7n cho c\u00e1c c\u00f4ng tr\u00ecnh ven bi\u1ec3n"},"content":{"rendered":"\n

T\u00ecnh tr\u1ea1ng x\u00e2m nh\u1eadp m\u1eb7n ng\u00e0y c\u00e0ng t\u0103ng k\u1ebft h\u1ee3p v\u1edbi nh\u1eefng \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean nh\u01b0 \u0111\u01b0\u1eddng b\u1edd bi\u1ec3n k\u00e9o d\u00e0i, nhi\u1ec1u \u0111\u1ea3o,… \u0111\u00f2i h\u1ecfi c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng \u1edf Vi\u1ec7t Nam ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1eb7n cao.<\/strong><\/p>\n\n\n\n

Trong b\u1ed1i c\u1ea3nh \u0111\u00f3, PGS.TS. L\u01b0\u01a1ng \u0110\u1ee9c Long c\u00f9ng c\u00e1c c\u1ed9ng s\u1ef1 \u1edf Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng (B\u1ed9 X\u00e2y d\u1ef1ng) \u0111\u00e3 ch\u1ebf t\u1ea1o xi m\u0103ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu sulfat cao, t\u0103ng tu\u1ed5i th\u1ecd cho nh\u1eefng c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng ngo\u00e0i bi\u1ec3n \u0111\u1ea3o ho\u1eb7c \u1edf nh\u1eefng m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t nhi\u1ec5m m\u1eb7n.<\/p>\n\n\n\n

Trong n\u01b0\u1edbc bi\u1ec3n v\u00e0 nh\u1eefng n\u01a1i b\u1ecb nhi\u1ec5m m\u1eb7n th\u01b0\u1eddng ch\u1ee9a nhi\u1ec1u sulfat (m\u1ed9t lo\u1ea1i mu\u1ed1i c\u1ee7a axit sulfuric), c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c ch\u1ea5t hydroxit v\u00e0 hydro aluminat canxi trong b\u00ea t\u00f4ng, g\u00e2y \u0103n m\u00f2n b\u00ea t\u00f4ng. B\u1edfi v\u1eady nh\u1eefng c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng \u1edf v\u00f9ng bi\u1ec3n \u0111\u1ea3o hay b\u1ecb r\u1ed7 b\u1ec1 m\u1eb7t v\u00e0 c\u00f3 tu\u1ed5i th\u1ecd ng\u1eafn, ch\u1ec9 sau v\u00e0i n\u0103m \u0111\u00e3 ph\u1ea3i s\u1eeda sang, gia c\u1ed1, t\u1ed1n nhi\u1ec1u th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c.<\/p>\n\n\n\n

Tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay c\u00f3 nhi\u1ec1u lo\u1ea1i xi m\u0103ng ch\u1ecbu sulfat nh\u1eadp kh\u1ea9u t\u1eeb n\u01b0\u1edbc ngo\u00e0i. Tuy nhi\u00ean, c\u00e1c lo\u1ea1i xi m\u0103ng n\u00e0y ch\u01b0a th\u1ef1c s\u1ef1 ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf \u1edf Vi\u1ec7t Nam. So v\u1edbi c\u00e1c qu\u1ed1c gia kh\u00e1c, m\u00f4i tr\u01b0\u1eddng bi\u1ec3n Vi\u1ec7t Nam c\u00f3 kh\u00ed h\u1eadu n\u00f3ng \u1ea9m, m\u01b0a b\u00e3o nhi\u1ec1u n\u00ean k\u1ebft c\u1ea5u b\u00ea t\u00f4ng d\u1ec5 b\u1ecb \u0103n m\u00f2n h\u01a1n.<\/p>\n\n\n\n

Tr\u01b0\u1edbc th\u1ef1c tr\u1ea1ng n\u00e0y, PGS.TS. L\u01b0\u01a1ng \u0110\u1ee9c Long c\u00f9ng c\u00e1c c\u1ed9ng s\u1ef1 \u1edf Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng (B\u1ed9 X\u00e2y d\u1ef1ng) \u0111\u00e3 t\u00ecm c\u00e1ch ch\u1ebf t\u1ea1o xi m\u0103ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu sulfat cao trong \u0111i\u1ec1u ki\u1ec7n n\u01b0\u1edbc bi\u1ec3n, n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n, nhi\u1ec5m ph\u00e8n,… t\u0103ng \u0111\u1ed9 b\u1ec1n cho b\u00ea t\u00f4ng, t\u0103ng tu\u1ed5i th\u1ecd cho c\u00f4ng tr\u00ecnh v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi kh\u00ed h\u1eadu Vi\u1ec7t Nam.<\/p>\n\n\n\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t xi m\u0103ng th\u00f4ng th\u01b0\u1eddng g\u1ed3m c\u00e1c b\u01b0\u1edbc: t\u00e1ch chi\u1ebft c\u00e1c nguy\u00ean li\u1ec7u th\u00f4 nh\u01b0 \u0111\u00e1 v\u00f4i, \u0111\u1ea5t s\u00e9t, qu\u1eb7ng s\u1eaft, sau \u0111\u00f3 ph\u1ed1i tr\u1ed9n, nghi\u1ec1n theo t\u1ec9 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh v\u00e0 \u0111\u01b0a v\u00e0o l\u00f2 nung \u0111\u1ec3 t\u1ea1o th\u00e0nh clinke (xi m\u0103ng ch\u01b0a nung, d\u1ea1ng vi\u00ean r\u1eafn nh\u1ecf), sau khi nghi\u1ec1n clinke s\u1ebd thu \u0111\u01b0\u1ee3c xi m\u0103ng th\u00e0nh ph\u1ea9m. \u0110\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng ch\u1ecbu sulfat, ng\u01b0\u1eddi ta th\u01b0\u1eddng tr\u1ed9n clinke xi m\u0103ng th\u00f4ng th\u01b0\u1eddng v\u1edbi c\u00e1c ph\u1ee5 gia xi m\u0103ng nh\u01b0 x\u1ec9 l\u00f2 cao, \u0111\u00e1 v\u00f4i, tro bay,…<\/p>\n\n\n\n

M\u1eb7c d\u00f9 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e3 ph\u1ed5 bi\u1ebfn song vi\u1ec7c \u1ee9ng d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra xi m\u0103ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu sulfat cao trong th\u1ef1c t\u1ebf kh\u00f4ng d\u1ec5 d\u00e0ng b\u1edfi y\u1ebfu t\u1ed1 m\u1ea5u ch\u1ed1t v\u1eabn n\u1eb1m \u1edf c\u00e1ch ph\u1ed1i tr\u1ed9n c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y. Sau m\u1ed9t qu\u00e1 tr\u00ecnh d\u00e0i m\u00e0y m\u00f2, k\u1ebft h\u1ee3p v\u1edbi h\u01a1n 20 n\u0103m kinh nghi\u1ec7m nghi\u00ean c\u1ee9u v\u1ec1 v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, PGS.TS. L\u01b0\u01a1ng \u0110\u1ee9c Long v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 \u0111\u00e3 t\u00ecm ra c\u00f4ng th\u1ee9c t\u1ed1i \u01b0u \u0111\u1ec3 t\u1ea1o ra xi m\u0103ng ch\u1ecbu sulfat cao.<\/p>\n\n\n\n

Theo \u0111\u00f3, xi m\u0103ng ch\u1ecbu sulfat \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch tr\u1ed9n clinke xi m\u0103ng th\u00f4ng th\u01b0\u1eddng ho\u1eb7c c\u00e1c d\u1ea1ng t\u01b0\u01a1ng t\u1ef1 v\u1edbi t\u1ec9 l\u1ec7 nh\u1ecf h\u01a1n 60% t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng (t\u1ed1i \u01b0u nh\u1ea5t l\u00e0 t\u1eeb 22-40%). T\u1ec9 l\u1ec7 c\u00e1c ch\u1ea5t ph\u1ee5 gia c\u00f2n l\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a ch\u00fang, sao cho t\u1ec9 l\u1ec7 SiO2\/Al2O3 n\u1eb1m trong kho\u1ea3ng t\u1eeb 2-3, t\u1ec9 l\u1ec7 CaO\/SiO2 trong kho\u1ea3ng t\u1eeb 1-2,2 v\u00e0 t\u1ed5ng l\u01b0\u1ee3ng SO3 n\u1eb1m trong kho\u1ea3ng t\u1eeb 1,5-6%.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m trong v\u00f2ng 1 n\u0103m v\u1ec1 \u0111\u1ed9 b\u1ec1n sulfat, th\u1eed nghi\u1ec7m ph\u1ea3n \u1ee9ng hydrat h\u00f3a (ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t x\u1ea3y ra khi n\u01b0\u1edbc v\u00e0 xi m\u0103ng, n\u1ebfu nhi\u1ec7t qu\u00e1 cao c\u00f3 th\u1ec3 g\u00e2y n\u1ee9t v\u1ee1 b\u00ea t\u00f4ng) v\u00e0 \u0111\u1ed9 n\u00e9n cho th\u1ea5y xi m\u0103ng s\u1ea3n xu\u1ea5t theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu sulfat \u01b0u vi\u1ec7t, nhi\u1ec7t hydrat h\u00f3a th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n cao.<\/p>\n\n\n\n

Nh\u1edd t\u00ednh m\u1edbi v\u00e0 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng cao trong th\u1ef1c t\u1ebf, gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt \u201cXi m\u0103ng composit c\u00f3 \u0111\u1ed9 b\u1ec1n ch\u1ecbu sulfat v\u00e0 ch\u1ecbu n\u01b0\u1edbc bi\u1ec3n\u201d \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd b\u1edfi Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng (B\u1ed9 X\u00e2y d\u1ef1ng) c\u1ee7a nh\u00f3m t\u00e1c gi\u1ea3 L\u01b0\u01a1ng \u0110\u1ee9c Long v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 \u0111\u00e3 \u0111\u01b0\u1ee3c C\u1ee5c S\u1edf h\u1eefu tr\u00ed tu\u1ec7 (B\u1ed9 KH&CN) c\u1ea5p B\u1eb1ng \u0111\u1ed9c quy\u1ec1n gi\u1ea3i ph\u00e1p h\u1eefu \u00edch s\u1ed1\u00a02-0001976\u00a0c\u00f4ng b\u1ed1 ng\u00e0y 25\/2\/2019. B\u00ean c\u1ea1nh \u0111\u00f3, B\u1eb1ng \u0111\u1ed9c quy\u1ec1n s\u00e1ng ch\u1ebf s\u1ed1\u00a01-0020299\u00a0c\u00f4ng b\u1ed1 ng\u00e0y 25\/01\/2020 cho gi\u1ea3i ph\u00e1p \u201cV\u1eadt li\u1ec7u \u0111\u00f3ng r\u1eafn tr\u00ean c\u01a1 s\u1edf xi m\u0103ng\u201d c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c C\u1ee5c S\u1edf h\u1eefu tr\u00ed tu\u1ec7 c\u1ea5p cho Vi\u1ec7n V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng v\u00e0 nh\u00f3m t\u00e1c gi\u1ea3 n\u00eau tr\u00ean.<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n


<\/p>\n\n\n\n

\"\"
Xi m\u0103ng ch\u1ecbu m\u1eb7n c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong x\u00e2y d\u1ef1ng nh\u1eefng c\u00f4ng tr\u00ecnh ven bi\u1ec3n v\u00e0 h\u1ea3i \u0111\u1ea3o. (ngu\u1ed3n:\u00a0baoapbac.vn;\u00a0kientrung.com.vn)<\/em><\/figcaption><\/figure><\/div>\n\n\n\n


Ngu\u1ed3n: Thanh B\u00ecnh- https:\/\/www.ipvietnam.gov.vn\/chuong-trinh-phat-trien-tai-san-tri-tue\/-\/asset_publisher\/vTLYJq8Ak7Gm\/content\/xi-mang-chiu-man-cho-cac-cong-trinh-ven-bien?inheritRedirect=true<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

T\u00ecnh tr\u1ea1ng x\u00e2m nh\u1eadp m\u1eb7n ng\u00e0y c\u00e0ng t\u0103ng k\u1ebft h\u1ee3p v\u1edbi nh\u1eefng \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean nh\u01b0 \u0111\u01b0\u1eddng b\u1edd bi\u1ec3n k\u00e9o d\u00e0i, nhi\u1ec1u \u0111\u1ea3o,… \u0111\u00f2i h\u1ecfi c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng \u1edf Vi\u1ec7t Nam ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1eb7n cao. Trong b\u1ed1i c\u1ea3nh \u0111\u00f3, PGS.TS. L\u01b0\u01a1ng \u0110\u1ee9c Long c\u00f9ng c\u00e1c c\u1ed9ng s\u1ef1 \u1edf Vi\u1ec7n V\u1eadt […]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-27425","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=27425"}],"version-history":[{"count":3,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27425\/revisions"}],"predecessor-version":[{"id":29525,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27425\/revisions\/29525"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=27425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=27425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=27425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}