{"id":724,"date":"2021-02-04T12:54:12","date_gmt":"2021-02-04T11:54:12","guid":{"rendered":"http:\/\/www.grad.hr\/latom\/?page_id=724"},"modified":"2022-02-23T09:44:31","modified_gmt":"2022-02-23T08:44:31","slug":"termometrijski-kalorimetar-tam-air","status":"publish","type":"page","link":"http:\/\/www.grad.hr\/latom\/index.php\/hr\/oprema-2\/termometrijski-kalorimetar-tam-air\/","title":{"rendered":"Izotermalni kalorimetar TAM Air"},"content":{"rendered":"\n<p>TAM Air je termostat na bazi zraka, koji koristi hladnjak za odvo\u0111enje topline od uzorka i u\u010dinkovito minimiziranje utjecaja vanjske temperature. Visoka to\u010dnost i stabilnost termostata \u010dini kalorimetar pogodnim za mjerenje protoka topline tijekom duljih vremenskih razdoblja, npr. tjedni.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-1024x768.jpg\" alt=\"\" class=\"wp-image-664\" width=\"455\" height=\"341\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-1024x768.jpg 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-300x225.jpg 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-768x576.jpg 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-1536x1152.jpg 1536w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetar-1-2048x1536.jpg 2048w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/figure><\/div>\n\n\n\n<p>Izotermna kalorimetrija u\u010dinkovit je alat za prou\u010davanje stupnjeva povezanih s hidratacijom cementnih pasta ili mortova pri konstantnoj temperaturi. Kalorimetar kontinuirano mjeri i prikazuje protok topline povezan s reakcijama hidratacije koje se odvijaju u cementnoj pasti nakon mije\u0161anja.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-1024x768.jpg\" alt=\"\" data-id=\"666\" data-link=\"http:\/\/www.grad.hr\/latom\/index.php\/equipment\/conduction-calorimetry-thermometric-tam-air\/kalorimetar\/\" class=\"wp-image-666\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-1024x768.jpg 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-300x225.jpg 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-768x576.jpg 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-1536x1152.jpg 1536w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/Kalorimetar-2048x1536.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-1024x768.jpg\" alt=\"\" data-id=\"667\" data-link=\"http:\/\/www.grad.hr\/latom\/index.php\/equipment\/conduction-calorimetry-thermometric-tam-air\/kalotimertija-materijali\/\" class=\"wp-image-667\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-1024x768.jpg 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-300x225.jpg 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-768x576.jpg 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-1536x1152.jpg 1536w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalotimertija-materijali-2048x1536.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-1024x768.jpg\" alt=\"\" data-id=\"668\" data-full-url=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-scaled.jpg\" data-link=\"http:\/\/www.grad.hr\/latom\/index.php\/equipment\/conduction-calorimetry-thermometric-tam-air\/kalorimetrija\/\" class=\"wp-image-668\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-1024x768.jpg 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-300x225.jpg 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-768x576.jpg 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-1536x1152.jpg 1536w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/01\/kalorimetrija-2048x1536.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p><strong>Primjer upotrebe<\/strong>: Toplinski protok i toplina hidratacije cementne paste primijenjene u tunelu &#8211; za potrebe primjene nove vrste cementa na gradili\u0161tu, zahtijevao se podatak o ukupnoj oslobo\u0111enoj toplini hidratacije<\/p>\n\n\n\n<p>Hidratacija cementa je egzotermna reakcija koja se odvija u nekoliko faza, vidljiva na krivulji kalorimetrije:<\/p>\n\n\n\n<ol><li>Brzi po\u010detni procesi<\/li><li>Indukcijsko razdoblje<\/li><li>Razdoblje ubrzanja<\/li><li>Razdoblje ka\u0161njenja<\/li><li>Dugotrajne reakcije<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"640\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf1-1024x640.png\" alt=\"\" class=\"wp-image-721\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf1-1024x640.png 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf1-300x188.png 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf1-768x480.png 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf1.png 1344w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Slika 1 prikazuje tijek reakcije u prvih 50 sati. Razdoblje ubrzanja karakterizira glavni &#8220;peak&#8221; u kalorimetrijskoj krivulji, koji se uglavnom pripisuje silikatnoj reakciji, tj. stvaranju C-S-H gela i kalcijevog hidroksida (Ca(OH)<sub>2<\/sub>). Mo\u017ee se primijetiti jo\u0161 jedan ne\u0161to manji vrh, oko 16 sati nakon po\u010detka reakcije. Ovaj vrh ukazuje na otapanje aluminata (C3A) i naknadno stvaranje etringita.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"640\" src=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf2-1024x640.png\" alt=\"\" class=\"wp-image-722\" srcset=\"http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf2-1024x640.png 1024w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf2-300x188.png 300w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf2-768x480.png 768w, http:\/\/www.grad.hr\/latom\/wp-content\/uploads\/2021\/02\/kalorimetrija-graf2.png 1344w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>TAM Air je termostat na bazi zraka, koji koristi hladnjak za odvo\u0111enje topline od uzorka i u\u010dinkovito minimiziranje utjecaja vanjske temperature. Visoka to\u010dnost i stabilnost termostata \u010dini kalorimetar pogodnim za mjerenje protoka topline tijekom duljih vremenskih razdoblja, npr. tjedni. Izotermna kalorimetrija u\u010dinkovit je alat za prou\u010davanje stupnjeva povezanih s hidratacijom cementnih pasta ili mortova pri [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":611,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Izotermalni kalorimetar TAM Air - LATOM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.grad.hr\/latom\/index.php\/hr\/oprema-2\/termometrijski-kalorimetar-tam-air\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Izotermalni kalorimetar TAM Air - LATOM\" \/>\n<meta property=\"og:description\" content=\"TAM Air je termostat na bazi zraka, koji koristi hladnjak za odvo\u0111enje topline od uzorka i u\u010dinkovito minimiziranje utjecaja vanjske temperature. Visoka to\u010dnost i stabilnost termostata \u010dini kalorimetar pogodnim za mjerenje protoka topline tijekom duljih vremenskih razdoblja, npr. tjedni. 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