{"id":1226,"date":"2026-10-23T08:09:07","date_gmt":"2026-10-23T08:09:07","guid":{"rendered":"https:\/\/zhiformix.com\/?p=1226"},"modified":"2026-10-23T08:09:07","modified_gmt":"2026-10-23T08:09:07","slug":"is-gypsum-retarder-or-accelerator","status":"publish","type":"post","link":"https:\/\/zhiformix.com\/vi\/gypsum-retarder\/is-gypsum-retarder-or-accelerator\/","title":{"rendered":"Th\u1ea1ch cao l\u00e0 ch\u1ea5t l\u00e0m ch\u1eadm hay ch\u1ea5t l\u00e0m nhanh?"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-1024x576.webp\" alt=\"Workers pouring concrete at a construction site\" class=\"wp-image-1228 lazyload\"><noscript><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-1024x576.webp\" alt=\"Workers pouring concrete at a construction site\" class=\"wp-image-1228\" srcset=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-1024x576.webp 1024w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-300x169.webp 300w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-768x432.webp 768w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-1536x864.webp 1536w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site-18x10.webp 18w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Concrete-pouring-at-a-construction-site.webp 1890w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ea1ch cao l\u00e0 ch\u1ea5t l\u00e0m ch\u1eadm hay ch\u1ea5t l\u00e0m nhanh? C\u00e2u h\u1ecfi n\u00e0y nghe c\u00f3 v\u1ebb nh\u01b0 m\u1ed9t c\u00e2u h\u1ecfi h\u00f3c b\u00faa, nh\u01b0ng \u0111\u00e2y l\u00e0 c\u00e2u h\u1ecfi th\u1ef1c s\u1ef1 t\u1eeb nh\u1eefng ng\u01b0\u1eddi mua th\u1ef1c t\u1ebf. C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn r\u1ea5t \u0111\u01a1n gi\u1ea3n. Th\u1ea1ch cao l\u00e0 c\u1ea3 hai. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t l\u00e0m ch\u1eadm trong m\u1ed9t h\u1ec7 th\u1ed1ng v\u1eadt li\u1ec7u, v\u00e0 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t l\u00e0m nhanh trong m\u1ed9t h\u1ec7 th\u1ed1ng v\u1eadt li\u1ec7u kh\u00e1c. Vai tr\u00f2 c\u1ee7a n\u00f3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc xung quanh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n s\u1ea3n xu\u1ea5t xi m\u0103ng, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng th\u1ea1ch cao \u0111\u1ec3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh \u0111\u00f4ng k\u1ebft. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu b\u1ea1n s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch cao tr\u00e1t t\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 ph\u1ea3i t\u00ecm c\u00e1ch ng\u0103n ch\u1eb7n th\u1ea1ch cao l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u00f4ng k\u1ebft. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch c\u1ea3 hai vai tr\u00f2 \u0111\u00f3 b\u1eb1ng ng\u00f4n ng\u1eef d\u1ec5 hi\u1ec3u, \u0111\u1ed3ng th\u1eddi h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch ki\u1ec3m so\u00e1t th\u1eddi gian \u0111\u00f4ng k\u1ebft trong c\u00f4ng th\u1ee9c s\u1ea3n xu\u1ea5t c\u1ee7a ri\u00eang m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn: Th\u1ea1ch cao v\u1eeba l\u00e0\u2026 v\u1eeba l\u00e0\u2026<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ea1ch cao l\u00e0 canxi sunfat dihydrat, CaSO\u2084\u00b72H\u2082O. \u0110\u00e2y l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t t\u1ef1 nhi\u00ean, v\u00e0 n\u00f3 \u0111\u00f3ng vai tr\u00f2 trung t\u00e2m trong hai ph\u1ea3n \u1ee9ng \u0111\u00f4ng c\u1ee9ng kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong <strong>Xi m\u0103ng Portland<\/strong>, th\u1ea1ch cao \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t <strong>ch\u1ea5t l\u00e0m ch\u1eadm<\/strong>. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t xi m\u0103ng th\u01b0\u1eddng th\u00eam m\u1ed9t v\u00e0i ph\u1ea7n tr\u0103m th\u1ea1ch cao v\u00e0o clinker, v\u00e0 vi\u1ec7c b\u1ed5 sung n\u00e0y l\u00e0m t\u0103ng th\u1eddi gian \u0111\u00f4ng k\u1ebft. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ea1ch cao, v\u1eefa xi m\u0103ng t\u01b0\u01a1i s\u1ebd \u0111\u00f4ng c\u1ee9ng qu\u00e1 nhanh, kh\u00f4ng ph\u00f9 h\u1ee3p cho c\u00e1c c\u00f4ng vi\u1ec7c x\u00e2y d\u1ef1ng th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong <strong>v\u1eefa th\u1ea1ch cao<\/strong>, th\u1ea1ch cao \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t <strong>b\u1ed9 t\u0103ng t\u1ed1c<\/strong>. Th\u1ea1ch cao dihydrat \u0111\u01b0\u1ee3c nghi\u1ec1n m\u1ecbn v\u00e0 tr\u1ed9n v\u00e0o v\u1eefa th\u1ea1ch cao hemihydrat s\u1ebd t\u1ea1o ra c\u00e1c tinh th\u1ec3 m\u1ea7m. C\u00e1c tinh th\u1ec3 m\u1ea7m n\u00e0y gi\u00fap \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh k\u1ebft tinh, nh\u1edd \u0111\u00f3 v\u1eefa th\u1ea1ch cao \u0111\u00f4ng c\u1ee9ng nhanh h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u, nh\u01b0ng c\u00f4ng vi\u1ec7c l\u1ea1i ho\u00e0n to\u00e0n kh\u00e1c nhau. C\u00e1c ph\u1ea7n ti\u1ebfp theo s\u1ebd gi\u1ea3i th\u00edch l\u00fd do t\u1ea1i sao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Th\u1ea1ch cao nh\u01b0 m\u1ed9t ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft trong xi m\u0103ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Xi m\u0103ng Portland \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch nghi\u1ec1n clinker c\u00f9ng v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf th\u1ea1ch cao. L\u01b0\u1ee3ng th\u1ea1ch cao th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1ed5 sung v\u00e0o kho\u1ea3ng 3% \u0111\u1ebfn 5% so v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng xi m\u0103ng. Th\u1ea1ch cao n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ea5t \u0111\u1ed9n. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ee5 gia ch\u1ee9c n\u0103ng, c\u00f3 nhi\u1ec7m v\u1ee5 \u0111i\u1ec1u ch\u1ec9nh th\u1eddi gian \u0111\u00f4ng k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Xi m\u0103ng t\u01b0\u01a1i ph\u1ea3n \u1ee9ng v\u1edbi n\u01b0\u1edbc r\u1ea5t nhanh. M\u1ed9t th\u00e0nh ph\u1ea7n c\u1ee7a clinker, \u0111\u00f3 l\u00e0 tricalcium aluminate, ph\u1ea3n \u1ee9ng g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c. N\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, h\u1ed7n h\u1ee3p xi m\u0103ng s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh \u201c\u0111\u00f4ng c\u1ee9ng \u0111\u1ed9t ng\u1ed9t\u201d. H\u1ed7n h\u1ee3p n\u00e0y s\u1ebd \u0111\u00f4ng c\u1ee9ng ngay trong m\u00e1y tr\u1ed9n tr\u01b0\u1edbc khi c\u00f4ng nh\u00e2n k\u1ecbp \u0111\u1ed5 ra. \u0110i\u1ec1u \u0111\u00f3 s\u1ebd khi\u1ebfn xi m\u0103ng tr\u1edf n\u00ean v\u00f4 d\u1ee5ng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ea1ch cao gi\u00fap ng\u0103n ng\u1eeba v\u1ea5n \u0111\u1ec1 n\u00e0y. N\u00f3 l\u00e0m t\u0103ng c\u1ea3 th\u1eddi gian \u0111\u00f4ng k\u1ebft ban \u0111\u1ea7u l\u1eabn th\u1eddi gian \u0111\u00f4ng k\u1ebft cu\u1ed1i c\u00f9ng c\u1ee7a xi m\u0103ng. Nh\u1edd \u0111\u00f3, c\u00f4ng nh\u00e2n c\u00f3 \u0111\u1ee7 th\u1eddi gian \u0111\u1ec3 tr\u1ed9n, v\u1eadn chuy\u1ec3n, \u0111\u1ed5 v\u00e0 ho\u00e0n thi\u1ec7n b\u00ea t\u00f4ng. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao m\u1ecdi lo\u1ea1i xi m\u0103ng Portland ti\u00eau chu\u1ea9n \u0111\u1ec1u ch\u1ee9a th\u1ea1ch cao.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-1024x576.webp\" alt=\"Cement clinker and gypsum grinding in a cement plant\" class=\"wp-image-1227 lazyload\"><noscript><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-1024x576.webp\" alt=\"Cement clinker and gypsum grinding in a cement plant\" class=\"wp-image-1227\" srcset=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-1024x576.webp 1024w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-300x169.webp 300w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-768x432.webp 768w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-1536x864.webp 1536w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line-18x10.webp 18w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Cement-plant-grinding-line.webp 1890w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Th\u1ea1ch cao l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh \u0111\u00f4ng c\u1ee9ng c\u1ee7a xi m\u0103ng nh\u01b0 th\u1ebf n\u00e0o<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 ch\u1ebf n\u00e0y r\u1ea5t d\u1ec5 hi\u1ec3u. Khi xi m\u0103ng ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, tricalcium aluminate c\u00f3 xu h\u01b0\u1edbng ph\u1ea3n \u1ee9ng nhanh. L\u00fac n\u00e0y, th\u1ea1ch cao can thi\u1ec7p v\u00e0 ph\u1ea3n \u1ee9ng v\u1edbi n\u00f3 tr\u01b0\u1edbc. Ph\u1ea3n \u1ee9ng s\u1edbm n\u00e0y t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp kho\u00e1ng ch\u1ea5t tr\u00ean c\u00e1c h\u1ea1t xi m\u0103ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y coi \u0111\u00f3 nh\u01b0 m\u1ed9t l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7. L\u1edbp ph\u1ee7 n\u00e0y bao b\u1ecdc c\u00e1c h\u1ea1t c\u00f3 t\u00ednh ph\u1ea3n \u1ee9ng m\u1ea1nh nh\u1ea5t v\u00e0 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ti\u1ebfp x\u00fac c\u1ee7a ch\u00fang v\u1edbi n\u01b0\u1edbc. Ph\u1ea3n \u1ee9ng di\u1ec5n ra nhanh ch\u00f3ng s\u1ebd d\u1ecbu b\u1edbt, v\u00e0 c\u00e1c ph\u1ea3n \u1ee9ng di\u1ec5n ra ch\u1eadm h\u01a1n \u2013 nh\u1eefng ph\u1ea3n \u1ee9ng gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n \u2013 s\u1ebd c\u00f3 th\u1eddi gian \u0111\u1ec3 di\u1ec5n ra m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Li\u1ec1u l\u01b0\u1ee3ng c\u0169ng r\u1ea5t quan tr\u1ecdng trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y. L\u01b0\u1ee3ng th\u1ea1ch cao ph\u00f9 h\u1ee3p s\u1ebd mang l\u1ea1i th\u1eddi gian \u0111\u00f4ng k\u1ebft b\u00ecnh th\u01b0\u1eddng v\u00e0 thu\u1eadn ti\u1ec7n cho vi\u1ec7c thi c\u00f4ng. Qu\u00e1 nhi\u1ec1u th\u1ea1ch cao s\u1ebd g\u00e2y ra nh\u1eefng v\u1ea5n \u0111\u1ec1 ri\u00eang, bao g\u1ed3m hi\u1ec7n t\u01b0\u1ee3ng gi\u00e3n n\u1edf v\u00e0 s\u1ef1 k\u00e9m b\u1ec1n c\u1ee7a xi m\u0103ng sau khi \u0111\u00f4ng c\u1ee9ng. C\u00e1c nh\u00e0 m\u00e1y xi m\u0103ng ki\u1ec3m so\u00e1t vi\u1ec7c b\u1ed5 sung th\u1ea1ch cao m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn, th\u01b0\u1eddng trong kho\u1ea3ng t\u1eeb 3% \u0111\u1ebfn 5%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Th\u1ea1ch cao v\u1edbi vai tr\u00f2 l\u00e0 ch\u1ea5t x\u00fac t\u00e1c trong v\u1eefa th\u1ea1ch cao<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e2y gi\u1edd h\u00e3y chuy\u1ec3n sang h\u1ec7 th\u1ed1ng kia. Th\u1ea1ch cao ban \u0111\u1ea7u \u1edf d\u1ea1ng b\u1ed9t b\u00e1n ng\u1eadm n\u01b0\u1edbc, CaSO\u2084\u00b70,5H\u2082O. C\u00f4ng nh\u00e2n tr\u1ed9n n\u00f3 v\u1edbi n\u01b0\u1edbc, v\u00e0 n\u00f3 s\u1ebd chuy\u1ec3n tr\u1edf l\u1ea1i th\u00e0nh th\u1ea1ch cao ng\u1eadm n\u01b0\u1edbc hai l\u1ea7n. Qu\u00e1 tr\u00ecnh t\u00e1i ng\u1eadm n\u01b0\u1edbc n\u00e0y ch\u00ednh l\u00e0 ph\u1ea3n \u1ee9ng \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh k\u1ebft tinh di\u1ec5n ra theo c\u00e1c giai \u0111o\u1ea1n. \u0110\u1ea7u ti\u00ean, h\u1ee3p ch\u1ea5t hemihydrate h\u00f2a tan trong n\u01b0\u1edbc. Sau \u0111\u00f3, dung d\u1ecbch tr\u1edf n\u00ean qu\u00e1 b\u00e3o h\u00f2a. Ti\u1ebfp theo, c\u00e1c tinh th\u1ec3 dihydrate si\u00eau nh\u1ecf ph\u1ea3i h\u00ecnh th\u00e0nh t\u1eeb kh\u00f4ng c\u00f3 g\u00ec. C\u00e1c nh\u00e0 khoa h\u1ecdc g\u1ecdi \u0111\u00e2y l\u00e0 giai \u0111o\u1ea1n t\u1ea1o m\u1ea7m, v\u00e0 \u0111\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec3m ngh\u1ebdn c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh. Trong m\u1ed9t kho\u1ea3ng th\u1eddi gian, d\u01b0\u1eddng nh\u01b0 kh\u00f4ng c\u00f3 g\u00ec x\u1ea3y ra, r\u1ed3i \u0111\u1ed9t nhi\u00ean c\u00e1c tinh th\u1ec3 xu\u1ea5t hi\u1ec7n v\u00e0 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac th\u1ea1ch cao ph\u00e1t huy t\u00e1c d\u1ee5ng l\u00e0m ch\u1ea5t x\u00fac t\u00e1c. N\u1ebfu b\u1ea1n th\u00eam th\u1ea1ch cao dihydrat nghi\u1ec1n m\u1ecbn v\u00e0o h\u1ed7n h\u1ee3p v\u1eefa t\u01b0\u01a1i, b\u1ea1n s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c \u0111i\u1ec3m ngh\u1ebdn. C\u00e1c h\u1ea1t th\u1ea1ch cao \u0111\u01b0\u1ee3c th\u00eam v\u00e0o s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 <strong>tinh th\u1ec3 h\u1ea1t gi\u1ed1ng<\/strong>. C\u00e1c tinh th\u1ec3 m\u1edbi h\u00ecnh th\u00e0nh tr\u1ef1c ti\u1ebfp tr\u00ean nh\u1eefng h\u1ea1t nh\u00e2n n\u00e0y thay v\u00ec h\u00ecnh th\u00e0nh t\u1eeb \u0111\u1ea7u. Th\u1eddi gian \u1ee7 gi\u1ea3m xu\u1ed1ng, v\u00e0 th\u1ea1ch cao c\u00f3 th\u1ec3 \u0111\u00f4ng c\u1ee9ng g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u1ed1 \u00fd \u00e1p d\u1ee5ng th\u1ee7 thu\u1eadt n\u00e0y. Ch\u1ea5t x\u00fac t\u00e1c \u0111\u00f4ng k\u1ebft d\u00f9ng cho t\u1ea5m th\u1ea1ch cao v\u00e0 v\u1eefa th\u1ea1ch cao th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch nghi\u1ec1n th\u1ea1ch cao c\u00f9ng v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t tr\u1ee3 nghi\u1ec1n. Th\u1ea1ch cao \u0111\u00e3 nghi\u1ec1n ch\u00ednh l\u00e0 th\u00e0nh ph\u1ea7n ho\u1ea1t t\u00ednh. Ch\u1ec9 c\u1ea7n th\u00eam m\u1ed9t l\u01b0\u1ee3ng r\u1ea5t nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 th\u1eddi gian \u0111\u00f4ng k\u1ebft.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-1024x576.webp\" alt=\"Worker mixing gypsum plaster powder with water\" class=\"wp-image-1229 lazyload\"><noscript><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-1024x576.webp\" alt=\"Worker mixing gypsum plaster powder with water\" class=\"wp-image-1229\" srcset=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-1024x576.webp 1024w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-300x169.webp 300w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-768x432.webp 768w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-1536x864.webp 1536w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster-18x10.webp 18w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/Mixing-gypsum-plaster.webp 1890w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>T\u1ea1i sao m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u l\u1ea1i c\u00f3 th\u1ec3 \u0111\u1ea3m nh\u1eadn hai ch\u1ee9c n\u0103ng tr\u00e1i ng\u01b0\u1ee3c nhau?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi b\u1ed1i r\u1ed1i, v\u00ec v\u1eady h\u00e3y l\u00e0m r\u00f5 v\u1ea5n \u0111\u1ec1 n\u00e0y. Th\u1ea1ch cao kh\u00f4ng c\u00f3 \u0111\u1ecbnh ngh\u0129a c\u1ed1 \u0111\u1ecbnh l\u00e0 \u201ch\u00f3a ch\u1ea5t l\u00e0m ch\u1eadm\u201d hay \u201ch\u00f3a ch\u1ea5t l\u00e0m nhanh\u201d. Vai tr\u00f2 c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ec7 th\u1ed1ng h\u00f3a h\u1ecdc m\u00e0 n\u00f3 tham gia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong xi m\u0103ng, v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf ph\u1ea3n \u1ee9ng aluminat di\u1ec5n ra qu\u00e1 nhanh. Th\u1ea1ch cao tham gia v\u00e0o ph\u1ea3n \u1ee9ng \u0111\u00f3 t\u1eeb s\u1edbm v\u00e0 t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp l\u00e0m ch\u1eadm ph\u1ea3n \u1ee9ng. K\u1ebft qu\u1ea3 l\u00e0 qu\u00e1 tr\u00ecnh \u0111\u00f4ng k\u1ebft di\u1ec5n ra ch\u1eadm h\u01a1n. Th\u1ea1ch cao \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ea5t l\u00e0m ch\u1eadm v\u00ec h\u1ec7 th\u1ed1ng c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m ch\u1eadm l\u1ea1i, v\u00e0 th\u1ea1ch cao cung c\u1ea5p c\u01a1 ch\u1ebf \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong v\u1eefa th\u1ea1ch cao, v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf giai \u0111o\u1ea1n h\u00ecnh th\u00e0nh h\u1ea1t k\u1ebft tinh di\u1ec5n ra ch\u1eadm. Vi\u1ec7c b\u1ed5 sung th\u1ea1ch cao cung c\u1ea5p c\u00e1c b\u1ec1 m\u1eb7t tinh th\u1ec3 s\u1eb5n c\u00f3. K\u1ebft qu\u1ea3 l\u00e0 qu\u00e1 tr\u00ecnh \u0111\u00f4ng c\u1ee9ng di\u1ec5n ra nhanh h\u01a1n. Th\u1ea1ch cao \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ea5t x\u00fac t\u00e1c v\u00ec h\u1ec7 th\u1ed1ng c\u1ea7n m\u1ed9t \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u, v\u00e0 th\u1ea1ch cao ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 cung c\u1ea5p \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i h\u1ecdc n\u00e0y mang t\u00ednh th\u1ef1c ti\u1ec5n. \u0110\u1eebng ch\u1ec9 h\u1ecfi \u201cch\u1ea5t ph\u1ee5 gia n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng g\u00ec\u201d m\u1ed9t c\u00e1ch t\u00e1ch bi\u1ec7t. H\u00e3y h\u1ecfi \u201cn\u00f3 c\u00f3 t\u00e1c d\u1ee5ng g\u00ec trong h\u1ec7 th\u1ed1ng c\u1ee7a t\u00f4i\u201d. C\u00f9ng m\u1ed9t ch\u1ea5t c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i th\u1eddi gian \u0111\u00f4ng k\u1ebft theo c\u1ea3 hai h\u01b0\u1edbng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n s\u1ea3n xu\u1ea5t xi m\u0103ng, th\u1ea1ch cao l\u00e0 \u201cng\u01b0\u1eddi b\u1ea1n\u201d gi\u00fap ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh \u0111\u00f4ng k\u1ebft. H\u00e3y duy tr\u00ec l\u01b0\u1ee3ng th\u1ea1ch cao b\u1ed5 sung trong ph\u1ea1m vi b\u00ecnh th\u01b0\u1eddng, ki\u1ec3m tra t\u1eebng ngu\u1ed3n clinker v\u00e0 theo d\u00f5i c\u00e1c d\u1ea5u hi\u1ec7u cho th\u1ea5y h\u00e0m l\u01b0\u1ee3ng sunfat qu\u00e1 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb th\u1ea1ch cao, t\u00ecnh h\u00ecnh s\u1ebd ng\u01b0\u1ee3c l\u1ea1i. Nguy\u00ean li\u1ec7u c\u01a1 b\u1ea3n c\u1ee7a b\u1ea1n v\u1ed1n \u0111\u00e3 \u0111\u00f4ng c\u1ee9ng nhanh. C\u00e1c tinh th\u1ec3 h\u1ea1t gi\u1ed1ng t\u1eeb th\u1ea1ch cao t\u00e1i ch\u1ebf ho\u1eb7c dihydrat m\u1ecbn c\u00f3 th\u1ec3 l\u00e0m cho n\u00f3 \u0111\u00f4ng c\u1ee9ng c\u00f2n nhanh h\u01a1n n\u1eefa. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m x\u00e2y d\u1ef1ng nh\u01b0 th\u1ea1ch cao tr\u00e1t t\u01b0\u1eddng, th\u1ea1ch cao k\u1ebft d\u00ednh v\u00e0 b\u1ed9t tr\u00e9t th\u1ea1ch cao, vi\u1ec7c \u0111\u00f4ng c\u1ee9ng nhanh th\u01b0\u1eddng l\u00e0 \u0111i\u1ec1u kh\u00f4ng mong mu\u1ed1n. C\u00f4ng nh\u00e2n c\u1ea7n t\u1eeb 30 ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd th\u1eddi gian thi c\u00f4ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u1ec9 v\u00e0i ph\u00fat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb th\u1ea1ch cao s\u1eed d\u1ee5ng <strong>ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng th\u1ea1ch cao<\/strong>. Ch\u1ea5t l\u00e0m ch\u1eadm gi\u00fap l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n tinh th\u1ec3 v\u00e0 m\u1edf r\u1ed9ng kho\u1ea3ng th\u1eddi gian l\u00e0m vi\u1ec7c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Khi c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch cao c\u1ea7n ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y c\u00f9ng ch\u00fang t\u00f4i \u00e1p d\u1ee5ng khoa h\u1ecdc v\u00e0o d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t c\u1ee7a qu\u00fd v\u1ecb. V\u1eefa th\u1ea1ch cao \u0111\u00f4ng c\u1ee9ng th\u00f4ng qua qu\u00e1 tr\u00ecnh k\u1ebft tinh, v\u00e0 b\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 n\u00e0o k\u00edch th\u00edch qu\u00e1 tr\u00ecnh k\u1ebft tinh n\u00e0y \u0111\u1ec1u s\u1ebd l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u00f4ng c\u1ee9ng. Trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 v\u1eefa th\u1ea1ch cao ho\u1eb7c b\u1ed9t tr\u00e9t th\u1ea1ch cao c\u1ee7a qu\u00fd v\u1ecb c\u00f3 th\u1ec3 \u0111\u00f4ng c\u1ee9ng tr\u01b0\u1edbc khi c\u00f4ng nh\u00e2n ho\u00e0n thi\u1ec7n b\u1ee9c t\u01b0\u1eddng. H\u1eadu qu\u1ea3 l\u00e0 l\u00e3ng ph\u00ed v\u1eadt li\u1ec7u v\u00e0 b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng th\u1ea1ch cao<\/strong> Gi\u1ea3i ph\u00e1p n\u00e0y gi\u00fap gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1. N\u00f3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh tinh th\u1ec3 dihydrat v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian thi c\u00f4ng t\u1eeb v\u00e0i ph\u00fat l\u00ean \u0111\u1ebfn v\u00e0i gi\u1edd. Li\u1ec1u l\u01b0\u1ee3ng s\u1eed d\u1ee5ng r\u1ea5t nh\u1ecf, th\u01b0\u1eddng t\u1eeb 0,03% \u0111\u1ebfn 0,5% so v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng th\u1ea1ch cao hemihydrat. M\u1ed9t s\u1ef1 thay \u0111\u1ed5i nh\u1ecf v\u1ec1 li\u1ec1u l\u01b0\u1ee3ng c\u0169ng mang l\u1ea1i s\u1ef1 thay \u0111\u1ed5i l\u1edbn v\u1ec1 th\u1eddi gian \u0111\u00f4ng c\u1ee9ng, do \u0111\u00f3 vi\u1ec7c th\u1eed nghi\u1ec7m v\u1edbi ngu\u1ed3n th\u1ea1ch cao c\u1ee7a ri\u00eang b\u1ea1n lu\u00f4n l\u00e0 \u0111i\u1ec1u \u0111\u00e1ng l\u00e0m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y ch\u00ednh l\u00e0 n\u01a1i <strong>ZhiFormix\u2122 GR-01<\/strong> t\u1eeb <strong>C\u00f4ng ty TNHH V\u1eadt li\u1ec7u M\u1edbi Zhiwei (Jinan).<\/strong> x\u1ee9ng \u0111\u00e1ng v\u1edbi v\u1ecb tr\u00ed c\u1ee7a m\u00ecnh. ZhiFormix\u2122 GR-01 l\u00e0 ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft th\u1ea1ch cao, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng tr\u00e1t th\u1ea1ch cao, k\u1ebft d\u00ednh th\u1ea1ch cao, b\u1ed9t tr\u00e9t th\u1ea1ch cao v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 th\u00e0nh ph\u1ea7n th\u1ea1ch cao. \u0110\u00e2y l\u00e0 lo\u1ea1i b\u1ed9t c\u00f3 \u0111\u1ed9 ch\u1ea3y t\u1ef1 do, h\u00f2a tan d\u1ec5 d\u00e0ng trong n\u01b0\u1edbc v\u00e0 tr\u1ed9n \u0111\u1ec1u v\u00e0o c\u00e1c c\u00f4ng th\u1ee9c b\u1ed9t kh\u00f4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi mua l\u1ef1a ch\u1ecdn ZhiFormix\u2122 GR-01 v\u00ec ba l\u00fd do thi\u1ebft th\u1ef1c. Th\u1ee9 nh\u1ea5t, s\u1ea3n ph\u1ea9m n\u00e0y mang l\u1ea1i <strong>th\u1eddi gian \u0111\u00f4ng c\u1ee9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh<\/strong>. B\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh kho\u1ea3ng th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng t\u1eeb 30 ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd th\u00f4ng qua li\u1ec1u l\u01b0\u1ee3ng, v\u00e0 \u0111i\u1ec1u ch\u1ec9nh sao cho ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu c\u0169ng nh\u01b0 d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n. Th\u1ee9 hai, \u0111\u00f3 l\u00e0 <strong>d\u1ec5 \u0111\u1ecbnh l\u01b0\u1ee3ng<\/strong>. Ph\u1ea1m vi ti\u00eau chu\u1ea9n t\u1eeb 0,03% \u0111\u1ebfn 0,5% ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c hi\u1ec7n c\u00f3 v\u00e0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho h\u1ed7n h\u1ee3p xi m\u0103ng 0,5% th\u00f4ng d\u1ee5ng d\u00f9ng \u0111\u1ec3 tr\u00e1t th\u1ea1ch cao. Th\u1ee9 ba, b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c <strong>h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt th\u1ef1c s\u1ef1<\/strong>. Zhiwei h\u1ed7 tr\u1ee3 vi\u1ec7c ki\u1ec3m tra li\u1ec1u l\u01b0\u1ee3ng v\u00e0 theo d\u00f5i m\u1eabu th\u1eed, nh\u1edd \u0111\u00f3 qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 th\u1eed nghi\u1ec7m ZhiFormix\u2122 GR-01 v\u1edbi th\u1ea1ch cao c\u1ee7a ri\u00eang m\u00ecnh tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh mua.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu qu\u00e1 tr\u00ecnh \u0111\u00f4ng c\u1ee9ng nhanh khi\u1ebfn b\u1ea1n t\u1ed1n k\u00e9m nguy\u00ean li\u1ec7u v\u00e0 nh\u00e2n c\u00f4ng, th\u00ec ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng ch\u00ednh l\u00e0 gi\u1ea3i ph\u00e1p. H\u00e3y li\u00ean h\u1ec7 v\u1edbi C\u00f4ng ty TNHH V\u1eadt li\u1ec7u M\u1edbi Zhiwei (Jinan) \u0111\u1ec3 nh\u1eadn m\u1eabu th\u1eed, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 b\u00e1o gi\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Th\u1ea1ch cao c\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft trong xi m\u0103ng kh\u00f4ng?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00fang v\u1eady. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t xi m\u0103ng th\u01b0\u1eddng th\u00eam kho\u1ea3ng 3% \u0111\u1ebfn 5% th\u1ea1ch cao v\u00e0o clinker xi m\u0103ng Portland. Th\u1ea1ch cao gi\u00fap k\u00e9o d\u00e0i th\u1eddi gian \u0111\u00f4ng k\u1ebft v\u00e0 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f4ng k\u1ebft \u0111\u1ed9t ng\u1ed9t, nh\u1edd \u0111\u00f3 c\u00f4ng nh\u00e2n c\u00f3 \u0111\u1ee7 th\u1eddi gian \u0111\u1ec3 tr\u1ed9n, \u0111\u1ed5 v\u00e0 ho\u00e0n thi\u1ec7n b\u00ea t\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Th\u1ea1ch cao c\u00f3 th\u1ec3 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u00f4ng c\u1ee9ng c\u1ee7a v\u1eefa tr\u00e1t kh\u00f4ng?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00fang v\u1eady. Th\u1ea1ch cao dihydrat \u0111\u01b0\u1ee3c nghi\u1ec1n m\u1ecbn \u0111\u00f3ng vai tr\u00f2 nh\u01b0 c\u00e1c tinh th\u1ec3 h\u1ea1t gi\u1ed1ng trong v\u1eefa th\u1ea1ch cao hemihydrat. Nh\u1edd c\u00e1c tinh th\u1ec3 h\u1ea1t gi\u1ed1ng n\u00e0y, qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh h\u1ea1t nh\u00e2n ch\u1eadm \u0111\u01b0\u1ee3c b\u1ecf qua, do \u0111\u00f3 c\u00e1c tinh th\u1ec3 m\u1edbi ph\u00e1t tri\u1ec3n nhanh h\u01a1n v\u00e0 v\u1eefa th\u1ea1ch cao \u0111\u00f4ng c\u1ee9ng s\u1edbm h\u01a1n. Ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t c\u00e1c ch\u1ea5t x\u00fac t\u00e1c \u0111\u00f4ng c\u1ee9ng theo ch\u00ednh c\u01a1 ch\u1ebf n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Trong xi m\u0103ng c\u00f3 bao nhi\u00eau th\u1ea1ch cao?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea1m vi b\u00ecnh th\u01b0\u1eddng l\u00e0 kho\u1ea3ng 3% \u0111\u1ebfn 5% so v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng xi m\u0103ng. N\u1ebfu l\u01b0\u1ee3ng th\u1ea1ch cao qu\u00e1 \u00edt s\u1ebd c\u00f3 nguy c\u01a1 xi m\u0103ng \u0111\u00f4ng c\u1ee9ng \u0111\u1ed9t ng\u1ed9t. N\u1ebfu l\u01b0\u1ee3ng th\u1ea1ch cao qu\u00e1 nhi\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng gi\u00e3n n\u1edf v\u00e0 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u1ee7a xi m\u0103ng sau khi \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>N\u1ebfu th\u1ea1ch cao c\u00f3 th\u1ec3 \u0111\u00f4ng c\u1ee9ng nhanh, t\u1ea1i sao c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb th\u1ea1ch cao l\u1ea1i c\u1ea7n ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Do qu\u00e1 tr\u00ecnh \u0111\u00f4ng c\u1ee9ng t\u1ef1 nhi\u00ean c\u1ee7a v\u1eefa th\u1ea1ch cao v\u1ed1n \u0111\u00e3 di\u1ec5n ra nhanh ch\u00f3ng, v\u00e0 c\u00e1c tinh th\u1ec3 h\u1ea1t gi\u1ed1ng c\u00f2n l\u00e0m cho qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra nhanh h\u01a1n n\u1eefa. C\u00f4ng vi\u1ec7c x\u00e2y d\u1ef1ng c\u1ea7n c\u00f3 kho\u1ea3ng th\u1eddi gian thi c\u00f4ng d\u00e0i h\u01a1n. Ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng th\u1ea1ch cao gi\u00fap l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c tinh th\u1ec3, t\u1eeb \u0111\u00f3 mang l\u1ea1i cho c\u00f4ng nh\u00e2n kho\u1ea3ng th\u1eddi gian t\u1eeb 30 ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd thay v\u00ec ch\u1ec9 v\u00e0i ph\u00fat.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft th\u1ea1ch cao v\u00e0 ch\u1ea5t l\u00e0m nhanh \u0111\u00f4ng k\u1ebft th\u1ea1ch cao l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ea5t l\u00e0m ch\u1eadm l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh \u0111\u00f4ng k\u1ebft v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian thi c\u00f4ng. Ch\u1ea5t l\u00e0m nhanh l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng \u0111\u00f4ng k\u1ebft v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian thi c\u00f4ng. Trong c\u00e1c h\u1ec7 th\u1ed1ng th\u1ea1ch cao, ch\u1ea5t l\u00e0m ch\u1eadm th\u01b0\u1eddng l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n tinh th\u1ec3, trong khi c\u00e1c ch\u1ea5t l\u00e0m nhanh nh\u01b0 th\u1ea1ch cao nghi\u1ec1n m\u1ecbn cung c\u1ea5p c\u00e1c tinh th\u1ec3 m\u1ea7m \u0111\u1ec3 qu\u00e1 tr\u00ecnh k\u1ebft tinh di\u1ec5n ra nhanh h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>T\u00f4i c\u00f3 th\u1ec3 mua ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng th\u1ea1ch cao \u1edf \u0111\u00e2u?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ty TNHH V\u1eadt li\u1ec7u M\u1edbi Zhiwei (Jinan).<\/strong> v\u1eadt t\u01b0 <strong>ZhiFormix\u2122 GR-01<\/strong>, m\u1ed9t ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng c\u1ee9ng th\u1ea1ch cao d\u00f9ng cho vi\u1ec7c tr\u00e1t th\u1ea1ch cao, k\u1ebft d\u00ednh th\u1ea1ch cao v\u00e0 b\u1ed9t tr\u00e9t th\u1ea1ch cao. Truy c\u1eadp <a href=\"http:\/\/zhiweichem.com\" target=\"_blank\" rel=\"noopener\">zhiweichem.com<\/a> \u0111\u1ec3 y\u00eau c\u1ea7u m\u1eabu s\u1ea3n ph\u1ea9m v\u00e0 b\u00e1o gi\u00e1.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-1024x576.webp\" alt=\"ZhiFormix GR-01 gypsum retarder controlling plaster setting time\" class=\"wp-image-1230 lazyload\"><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-1024x576.webp\" alt=\"ZhiFormix GR-01 gypsum retarder controlling plaster setting time\" class=\"wp-image-1230\" srcset=\"https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-1024x576.webp 1024w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-300x169.webp 300w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-768x432.webp 768w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-1536x864.webp 1536w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder-18x10.webp 18w, https:\/\/zhiformix.com\/wp-content\/uploads\/2026\/10\/ZhiFormix-GR-01-gypsum-retarder.webp 1890w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>K\u1ebft lu\u1eadn<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eady, th\u1ea1ch cao l\u00e0 ch\u1ea5t l\u00e0m ch\u1eadm hay ch\u1ea5t l\u00e0m nhanh? N\u00f3 l\u00e0 c\u1ea3 hai, v\u00e0 h\u1ec7 th\u1ed1ng s\u1ebd quy\u1ebft \u0111\u1ecbnh. Trong xi m\u0103ng Portland, th\u1ea1ch cao l\u00e0 m\u1ed9t <strong>ch\u1ea5t l\u00e0m ch\u1eadm<\/strong>. Ch\u1ea5t n\u00e0y ph\u1ea3n \u1ee9ng v\u1edbi aluminat canxi ba, t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 v\u00e0 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f4ng c\u1ee9ng \u0111\u1ed9t ng\u1ed9t. Trong v\u1eefa th\u1ea1ch cao, th\u1ea1ch cao l\u00e0 m\u1ed9t <strong>b\u1ed9 t\u0103ng t\u1ed1c<\/strong>. Th\u1ea1ch cao dihydrat nghi\u1ec1n m\u1ecbn cung c\u1ea5p c\u00e1c tinh th\u1ec3 m\u1ea7m, gi\u00fap b\u1ecf qua giai \u0111o\u1ea1n t\u1ea1o m\u1ea7m ch\u1eadm v\u00e0 l\u00e0m cho th\u1ea1ch cao \u0111\u00f4ng c\u1ee9ng nhanh h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t, b\u00e0i h\u1ecdc r\u00fat ra r\u1ea5t \u0111\u01a1n gi\u1ea3n. Trong s\u1ea3n xu\u1ea5t xi m\u0103ng, h\u00e3y ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng th\u1ea1ch cao b\u1ed5 sung \u0111\u1ec3 duy tr\u00ec th\u1eddi gian \u0111\u00f4ng k\u1ebft ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c. Trong c\u00e1c s\u1ea3n ph\u1ea9m th\u1ea1ch cao, h\u00e3y d\u1ef1 ki\u1ebfn th\u1eddi gian \u0111\u00f4ng k\u1ebft nhanh v\u00e0 s\u1eed d\u1ee5ng ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft khi c\u00f4ng nh\u00e2n c\u1ea7n th\u00eam th\u1eddi gian. V\u00e0 khi b\u1ea1n c\u1ea7n ch\u1ea5t l\u00e0m ch\u1eadm \u0111\u00f4ng k\u1ebft \u0111\u00f3, <strong><a href=\"https:\/\/zhiformix.com\/vi\/gypsum-retarder\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/zhiformix.com\/gypsum-retarder\/\" rel=\"noreferrer noopener\">ZhiFormix\u2122 GR-01<\/a><\/strong> t\u1eeb <strong>C\u00f4ng ty TNHH V\u1eadt li\u1ec7u M\u1edbi Zhiwei (Jinan).<\/strong> mang \u0111\u1ebfn cho b\u1ea1n th\u1eddi gian c\u00e0i \u0111\u1eb7t c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, vi\u1ec7c \u0111\u1ecbnh l\u01b0\u1ee3ng d\u1ec5 d\u00e0ng v\u00e0 s\u1ef1 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt th\u1ef1c s\u1ef1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Is gypsum a retarder or an accelerator? The question sounds like a trick, but it is a real question from real buyers. The short answer is simple. Gypsum is both. It works as a retarder in one material system, and it works as an accelerator in another. The role changes with the chemistry around it. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[27,26,24,23,28,25],"class_list":["post-1226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gypsum-retarder","tag-calcium-sulfate-dihydrate-accelerator","tag-gypsum-accelerator","tag-gypsum-plaster-setting-time","tag-gypsum-retarder-cement","tag-gypsum-seed-crystals","tag-is-gypsum-a-retarder"],"_links":{"self":[{"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/posts\/1226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/comments?post=1226"}],"version-history":[{"count":0,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/posts\/1226\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/media\/1228"}],"wp:attachment":[{"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/media?parent=1226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/categories?post=1226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhiformix.com\/vi\/wp-json\/wp\/v2\/tags?post=1226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}