{"id":73833,"date":"2023-06-19T11:11:51","date_gmt":"2023-06-19T04:11:51","guid":{"rendered":"https:\/\/tcvn.gov.vn\/?p=73833"},"modified":"2023-06-19T11:11:53","modified_gmt":"2023-06-19T04:11:53","slug":"xay-dung-tieu-chuan-moi-danh-cho-vat-lieu-be-tong-cot-soi","status":"publish","type":"post","link":"https:\/\/tcvn.gov.vn\/xay-dung-tieu-chuan-moi-danh-cho-vat-lieu-be-tong-cot-soi\/19\/06\/2023\/","title":{"rendered":"X\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n m\u1edbi d\u00e0nh cho v\u1eadt li\u1ec7u b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">\u1ee6y ban ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ASTM \u0111ang x\u00e2y d\u1ef1ng m\u1ed9t ti\u00eau chu\u1ea9n v\u1ec1 b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i &#8211; m\u1ed9t v\u1eadt li\u1ec7u \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u trong ng\u00e0nh x\u00e2y d\u1ef1ng.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">\u1ee6y ban c\u1ed1t li\u1ec7u b\u00ea t\u00f4ng v\u00e0 b\u00ea t\u00f4ng thu\u1ed9c \u1ee7y ban ASTM Qu\u1ed1c t\u1ebf (C09) \u0111ang ph\u00e1t tri\u1ec3n m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t tr\u01b0\u1edbc \u0111\u00f3 (WK73384 ) s\u1ebd \u0111\u00e1nh gi\u00e1 t\u00ednh n\u0103ng ch\u1ecbu k\u00e9o c\u1ee7a b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u1eabu h\u00ecnh tr\u1ee5 ch\u1ecbu t\u1ea3i tr\u1ecdng \u0111\u1ed9t d\u1eadp k\u00e9p.<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">Ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t bao g\u1ed3m \u201cc\u00e1c \u0111\u1eb7c t\u00ednh k\u00e9o tr\u01b0\u1edbc v\u00e0 sau c\u1ef1c \u0111\u1ea1i (m\u00e0) c\u00f3 \u00fd ngh\u0129a r\u1ea5t l\u1edbn trong b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i (FRC) v\u00e0 b\u00ea t\u00f4ng t\u00ednh n\u0103ng si\u00eau cao (UHPC). C\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u01a1 b\u1ea3n c\u1ee7a FRC v\u00e0 UHPC, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng v\u00e0 ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y,\u201d \u00f4ng Shih-Ho (Simon) Chao, th\u00e0nh vi\u00ean c\u1ee7a ASTM v\u00e0 l\u00e0\u00a0gi\u00e1o s\u01b0 k\u1ef9 thu\u1eadt d\u00e2n d\u1ee5ng t\u1ea1i \u0110\u1ea1i h\u1ecdc Texas \u1edf Arlington\u00a0cho bi\u1ebft. \u00d4ng n\u00f3i th\u00eam r\u1eb1ng FRC v\u00e0 UHPC cung c\u1ea5p \u0111\u1ed9 b\u1ec1n cao h\u01a1n so v\u1edbi b\u00ea t\u00f4ng th\u00f4ng th\u01b0\u1eddng, c\u00f3 kh\u1ea3 n\u0103ng khuy\u1ebfn kh\u00edch vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u b\u1ec1n n\u00e0y, t\u1eeb \u0111\u00f3 th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng trong x\u00e3 h\u1ed9i, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng b\u1ec1n v\u1eefng.\u201d<\/span><\/p>\n<div class=\"photo_detail\" style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\"><img loading=\"lazy\" class=\"aligncenter\" title=\"\" src=\"https:\/\/vietq.vn\/Images\/ngoyenhoa\/2023\/06\/14\/240.jpeg\" alt=\"\" width=\"656\" height=\"437\" \/><\/span><\/p>\n<h2 class=\"caption_image\" style=\"text-align: center;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">\u00a0X\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n v\u1ec1 b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i gi\u00fap \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u t\u1ed1i \u01b0u h\u01a1n<\/span><\/h2>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean th\u1eed nghi\u1ec7m hai l\u1ea7n (DPT). \u201cTh\u1eed nghi\u1ec7m \u0111\u1ee5c l\u1ed7 k\u00e9p, \u0111\u01b0\u1ee3c n\u00eau trong ti\u00eau chu\u1ea9n \u0111\u1ec1 xu\u1ea5t, s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb v\u00e0 quy tr\u00ecnh \u0111\u01a1n gi\u1ea3n, cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p thu\u1eadn ti\u1ec7n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh k\u00e9o n\u00e0y. \u00d4ng Chao cho bi\u1ebft ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ee5c \u0111\u00edch th\u1eed nghi\u1ec7m th\u00f4ng th\u01b0\u1eddng v\u00e0 cho th\u1ea5y k\u1ebft qu\u1ea3 \u00edt bi\u1ebfn \u0111\u1ed9ng. Theo \u00f4ng, DPT \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec n\u00f3 \u0111\u00e3 tr\u1ea3i qua qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m r\u1ed9ng r\u00e3i b\u1edfi nhi\u1ec1u nh\u00e0 nghi\u00ean c\u1ee9u tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi.<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">\u00d4ng Chao c\u0169ng tin r\u1eb1ng \u0111i\u1ec1u n\u00e0y s\u1ebd ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch cho m\u1ee5c \u0111\u00edch ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0\/ho\u1eb7c nh\u01b0 m\u1ed9t h\u01b0\u1edbng d\u1eabn cho kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ed9 b\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 10pt;\">T\u1ea5t c\u1ea3 c\u00e1c b\u00ean quan t\u00e2m (c\u1ee5 th\u1ec3 l\u00e0 c\u00e1c s\u1edf giao th\u00f4ng v\u1eadn t\u1ea3i, c\u01a1 quan ch\u00ednh ph\u1ee7, nh\u00e0 cung c\u1ea5p FRC, nh\u00e0 s\u1ea3n xu\u1ea5t s\u1ee3i v\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u) c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1eddi \u0111\u00f3ng g\u00f3p v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ee6y ban ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ASTM \u0111ang x\u00e2y d\u1ef1ng m\u1ed9t ti\u00eau chu\u1ea9n v\u1ec1 b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i &#8211; m\u1ed9t v\u1eadt li\u1ec7u \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u trong ng\u00e0nh x\u00e2y d\u1ef1ng. \u1ee6y ban c\u1ed1t li\u1ec7u b\u00ea t\u00f4ng v\u00e0 b\u00ea t\u00f4ng thu\u1ed9c \u1ee7y ban ASTM Qu\u1ed1c t\u1ebf (C09) \u0111ang ph\u00e1t tri\u1ec3n m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8,21],"tags":[],"acf":{"linh-vuc":"Ti\u00eau chu\u1ea9n"},"_links":{"self":[{"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/posts\/73833"}],"collection":[{"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/comments?post=73833"}],"version-history":[{"count":0,"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/posts\/73833\/revisions"}],"wp:attachment":[{"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/media?parent=73833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/categories?post=73833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tcvn.gov.vn\/wp-json\/wp\/v2\/tags?post=73833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}