{"id":4501,"date":"2020-04-29T03:54:35","date_gmt":"2020-04-29T03:54:35","guid":{"rendered":"https:\/\/thuvienxaydung.com.vn\/?p=4501"},"modified":"2020-04-29T03:56:07","modified_gmt":"2020-04-29T03:56:07","slug":"cau-tao-mat-duong-cua-be-tong-xi-mang","status":"publish","type":"post","link":"https:\/\/tailieuxaydung.net\/?p=4501","title":{"rendered":"C\u1ea5u T\u1ea1o M\u1eb7t \u0110\u01b0\u1eddng C\u1ee7a B\u00ea T\u00f4ng Xi M\u0103ng"},"content":{"rendered":"<p>B\u00ea t\u00f4ng xi m\u0103ng l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa xi m\u0103ng l\u00e0 ch\u1ee7 \u0111\u1ea1o. V\u1edbi t\u1ec9 l\u1ec7 h\u1ee3p l\u00fd c\u00e1c c\u1ed1t li\u1ec7u \u0111\u00e1, c\u00e1t\u2026v\u00e0 n\u01b0\u1edbc\u00a0\u0111\u01b0\u1ee3c nh\u00e0o tr\u1ed9n theo m\u1ed9 t\u1ec9 l\u1ec7 nh\u1ea5t\u00a0\u0111\u1ecbnh.<\/p>\n<p>Nh\u01b0 v\u1eady l\u00e0 ch\u00fang ta n\u00ean nh\u1edb r\u1eb1ng kh\u00f4ng ch\u1ec9 c\u00f3 xi m\u0103ng. Trong h\u1ed7n h\u1ee3p b\u00ea t\u00f4ng n\u00e0y m\u00e0 c\u00f2n r\u1ea5t nhi\u1ec1u c\u1ed1t li\u1ec7u v\u00e0 ph\u1ee5 gia kh\u00e1c.<\/p>\n<p>C\u00f3 ch\u1ea5t ph\u1ee5 gia l\u00e0m t\u0103ng t\u00ednh d\u1eabn\u00a0\u0111i\u1ec7n, t\u0103ng\u00a0\u0111\u1ed9 b\u1ec1, t\u0103ng\u00a0\u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng\u00a0\u0103n m\u00f2n\u00a0axit. C\u00f3 ch\u1ea5t l\u00e0m ch\u1eadm hydrat h\u00f3a, c\u00f3 ch\u1ea5t cho v\u00e0o\u00a0\u0111\u1ec3 t\u0103ng t\u00ednh th\u1ea9m m\u0129 c\u1ee7a h\u1ed7n h\u1ee3p n\u00e0y.<\/p>\n<h2 id=\"cau_tao_mat_duong_cua_b_tng_xi_mang\">C\u1ea4U T\u1ea0O M\u1eb6T \u0110\u01af\u1edcNG C\u1ee6A B\u00ca T\u00d4NG XI M\u0102NG<\/h2>\n<h3 id=\"1-_tang_mat\">1. T\u1ea7ng M\u1eb7t<\/h3>\n<p><strong>a) T\u1ea5m b\u00ea t\u00f4ng xi m\u0103ng<\/strong><\/p>\n<ul>\n<li>\u00a0M\u00e1c b\u00ea t\u00f4ng: B\u00ea t\u00f4ng xi m\u0103ng m\u00e1c cao 350\/45 \u2013 400\/50 \u2013 450\/55 \u2013 500\/60<\/li>\n<li>\u00a0Chi\u1ec1u d\u00e0y t\u1ea5m: t\u1eeb 15cm (6 inches) \u0111\u1ebfn 30 cm (12 inches)<\/li>\n<li>K\u00edch th\u01b0\u1edbc t\u1ea5m (d\u00e0i, r\u1ed9ng): tu\u1ef3 theo lo\u1ea1i h\u00ecnh c\u1ee7a t\u1ea5m. Chi\u1ec1u r\u1ed9ng t\u1ea5m th\u01b0\u1eddng b\u1eb1ng chi\u1ec1u r\u1ed9ng m\u1ed9t l\u00e0n xe; lo\u1ea1i JPCP chi\u1ec1u d\u00e0i t\u1ea5m \u0111\u1ebfn 7m; lo\u1ea1i JRCP \u0111\u1ebfn 15m; lo\u1ea1i CRCP ch\u1ec9 b\u1ed1 tr\u00ed khe thi c\u00f4ng, v\u1ecb tr\u00ed n\u00fat giao th\u00f4ng hay n\u01a1i giao c\u1eaft v\u1edbi c\u00f4ng tr\u00ecnh tho\u00e1t n\u01b0\u1edbc<\/li>\n<li>T\u1ea5m c\u00f3 ti\u1ebft di\u1ec7n ch\u1eef nh\u1eadt \u0111\u1ec3 h\u1ea1n ch\u1ebf \u01afSN ph\u00e1t sinh trong trong t\u1ea5m. \u0110\u1ed9 d\u1ed1c ngang m\u1eb7t \u0111\u01b0\u1eddng 1,5-2%<\/li>\n<\/ul>\n<p><strong>b) C\u00e1c lo\u1ea1i khe<\/strong><\/p>\n<ul>\n<li>M\u1eb7t \u0111\u01b0\u1eddng b\u00ea t\u00f4ng xi m\u0103ng th\u00f4ng th\u01b0\u1eddng b\u1ed1 tr\u00ed c\u00e1c khe ngang g\u1ed3m: khe co, 3-5 khe co l\u00e0m 1 khe gi\u00e3n, khe thi c\u00f4ng b\u1ed1 tr\u00ed \u1edf cu\u1ed1i ca (th\u01b0\u1eddng tr\u00f9ng v\u1edbi 1 khe co ho\u1eb7c khe gi\u00e3n) v\u00e0 khe u\u1ed1n v\u1ed3ng (khe d\u1ecdc).<\/li>\n<li>\u0110\u1ec3 truy\u1ec1n l\u1ef1c gi\u1eefa c\u00e1c t\u1ea5m, b\u1ed1 tr\u00ed thanh truy\u1ec1n l\u1ef1c b\u1eb1ng th\u00e9p tr\u01a1n. \u0110\u01b0\u1eddng k\u00ednh c\u1ed1t th\u00e9p \uf06628-\uf06640, d\u00e0i 40-60cm, kho\u1ea3ng c\u00e1ch c\u00e1c thanh tu\u1ef3 thu\u1ed9c v\u00e0o khe co, gi\u00e3n (25- 40cm) hay khe u\u1ed1n v\u1ed3ng (70-120cm). M\u1ed9t \u0111\u1ea7u thanh qu\u00e9t nh\u0169 t\u01b0\u01a1ng ho\u1eb7c nh\u1ef1a l\u1ecfng \u0111\u1ec3 chuy\u1ec3n v\u1ecb t\u1ef1 do.<\/li>\n<li>M\u1eb7t \u0111\u01b0\u1eddng b\u00ea t\u00f4ng xi m\u0103ng c\u00f3 m\u1ed1i n\u1ed1i t\u0103ng c\u01b0\u1eddng ch\u1ec9 b\u1ed1 tr\u00ed khe gi\u00e3n, khe thi c\u00f4ng v\u00e0 khe u\u1ed1n v\u1ed3ng. Th\u00eam 1 l\u01b0\u1edbi c\u1ed1t th\u00e9p b\u1ed1 tr\u00ed \u1edf s\u00e1t m\u1eb7t tr\u00ean c\u1ee7a t\u1ea5m \u0111\u1ec3 ch\u1ecbu \u1ee9ng su\u1ea5t khi b\u00ea t\u00f4ng co ng\u00f3t v\u00e0 \u1ee9ng su\u1ea5t nhi\u1ec7t (l\u01b0\u1edbi c\u1ed1t th\u00e9p ch\u1ed1ng n\u1ee9t).<\/li>\n<li>M\u1eb7t \u0111\u01b0\u1eddng b\u00ea t\u00f4ng xi m\u0103ng li\u00ean t\u1ee5c ch\u1ec9 c\u00f3 c\u00e1c khe thi c\u00f4ng. L\u01b0\u1edbi c\u1ed1t th\u00e9p b\u1ed1 tr\u00ed gi\u1eefa t\u1ea5m \u0111\u1ec3 ch\u1ecbu \u1ee9ng su\u1ea5t khi BT co ng\u00f3t, ch\u1ecbu l\u1ef1c k\u00e9o do ho\u1ea1t t\u1ea3i v\u00e0 \u1ee9ng su\u1ea5t nhi\u1ec7t ph\u00e1t sinh trong t\u1ea5m.<\/li>\n<\/ul>\n<h3 id=\"2-_tang_mng\">2. T\u1ea7ng M\u00f3ng<\/h3>\n<ul>\n<li>C\u00f3 th\u1ec3 l\u00e0 b\u00ea t\u00f4ng xi m\u0103ng m\u00e1c 350\/45 \u2013 300\/40 \u2013 250\/35 v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng b\u00ea t\u00f4ng xi m\u0103ng h\u1ed7n h\u1ee3p.<\/li>\n<li>C\u00f3 th\u1ec3 l\u00e0 k\u1ebft c\u1ea5u t\u1ea7ng m\u00f3ng \u00e1o \u0111\u01b0\u1eddng m\u1ec1m th\u00f4ng th\u01b0\u1eddng. N\u1ebfu m\u00f3ng l\u00e0 c\u00e1t gia c\u1ed1 xi m\u0103ng s\u1ebd c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m.<\/li>\n<li>Chi\u1ec1u r\u1ed9ng m\u00f3ng ph\u1ea3i l\u1edbn h\u01a1n chi\u1ec1u r\u1ed9ng ph\u1ea7n xe ch\u1ea1y t\u1eeb 25-35cm khi \u0111\u1ed5 b\u00ea t\u00f4ng b\u1eb1ng v\u00e1n khu\u00f4n c\u1ed1 \u0111\u1ecbnh; t\u1eeb 50-60cm khi \u0111\u1ed5 BT b\u1eb1ng v\u00e1n khu\u00f4n tr\u01b0\u1ee3t.<\/li>\n<li>N\u1ebfu m\u00f3ng l\u00e0 l\u1edbp \u0111\u00e1 d\u0103m ph\u1ea3i b\u1ed1 tr\u00ed l\u1edbp t\u1ea1o ph\u1eb3ng d\u00e0y 6-10 cm.<\/li>\n<li>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i tr\u00ean \u0111\u1ec9nh l\u1edbp m\u00f3ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>B\u00ea t\u00f4ng xi m\u0103ng l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa xi m\u0103ng l\u00e0 ch\u1ee7 \u0111\u1ea1o. V\u1edbi t\u1ec9 l\u1ec7 h\u1ee3p l\u00fd c\u00e1c c\u1ed1t li\u1ec7u \u0111\u00e1, c\u00e1t\u2026v\u00e0 n\u01b0\u1edbc\u00a0\u0111\u01b0\u1ee3c nh\u00e0o tr\u1ed9n theo m\u1ed9 t\u1ec9 l\u1ec7 nh\u1ea5t\u00a0\u0111\u1ecbnh. Nh\u01b0 v\u1eady l\u00e0 ch\u00fang ta n\u00ean nh\u1edb r\u1eb1ng kh\u00f4ng ch\u1ec9 c\u00f3 xi m\u0103ng. Trong h\u1ed7n h\u1ee3p b\u00ea t\u00f4ng n\u00e0y m\u00e0 c\u00f2n r\u1ea5t nhi\u1ec1u&#8230;<\/p>\n","protected":false},"author":1,"featured_media":4503,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/4501","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=4501"}],"version-history":[{"count":1,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/4501\/revisions"}],"predecessor-version":[{"id":4502,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/4501\/revisions\/4502"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/media\/4503"}],"wp:attachment":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}