{"id":377551,"date":"2023-08-24T07:57:26","date_gmt":"2023-08-24T05:57:26","guid":{"rendered":"https:\/\/www.pcnen.com\/portal\/?p=377551"},"modified":"2023-08-24T07:57:26","modified_gmt":"2023-08-24T05:57:26","slug":"moguca-primjena-kafe-u-gradjevinskoj-industriji","status":"publish","type":"post","link":"https:\/\/www.pcnen.com\/portal\/2023\/08\/24\/moguca-primjena-kafe-u-gradjevinskoj-industriji\/","title":{"rendered":"Mogu\u0107a primjena kafe u gra\u0111evinskoj industriji"},"content":{"rendered":"

Reciklirani talog kave mo\u017ee pove\u0107ati \u010dvrsto\u0107u betona 29 posto, otkrili su nau\u010dnici s australijskog Univerziteta RMIT u Melburnu.<\/p>\n

Prikupljen iz lokalnih kafi\u0107a, talog kave je istra\u017een kao potencijalna zamjena za pijesak u proizvodnji betona. Studija vezana za to istra\u017eivanje objavljena je u \u010dasopisu Journal of Cleaner Production, pi\u0161e newscientist.com.<\/a><\/p>\n

U po\u010detku je neobra\u0111eni talog kafe oslabio beton, ali nakon dvosatnog izlaganja taloga pe\u0107i bez kiseonika na 350\u00b0C, talog se transformisao u materiju nalik drvenom uglju nazvanu biougljen, \u0161to se pokazalo dobrim.<\/p>\n

Integrisanje 15 posto ovog biougljena umjesto pijeska, betonski blokovi pokazali su zna\u010dajno pove\u0107anje \u010dvrsto\u0107e od 29 posto u pore\u0111enju s konvencionalnim betonom.<\/p>\n

Ovo pobolj\u0161anje vjerovatno proizlazi iz porozne strukture biougljena koja efikasno zadr\u017eava vlagu, \u0161to ubla\u017eava unutra\u0161nje su\u0161enje betona, koje uzrokuje mikropukotine i slabi njegovu strukturu.<\/p>\n

Globalno se godi\u0161nje proizvede oko 18 miliona tona taloga kave, koji \u010desto zavr\u0161ava na odlagali\u0161tima gdje se njihovom razgradnjom osloba\u0111a metan \u2014 stakleni\u010dki gas koji ima 21 puta ve\u0107u mo\u0107 globalnog\u00a0 zagrijavanja od ugljen dioksida.<\/p>\n","protected":false},"excerpt":{"rendered":"

Reciklirani talog kave mo\u017ee pove\u0107ati \u010dvrsto\u0107u betona 29 posto, otkrili su nau\u010dnici s australijskog Univerziteta RMIT u Melburnu<\/p>\n","protected":false},"author":1,"featured_media":288466,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[3397,3396,3395],"class_list":["post-377551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-svastara","tag-beton","tag-gradjevinska-industrija","tag-kafa"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/377551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=377551"}],"version-history":[{"count":1,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/377551\/revisions"}],"predecessor-version":[{"id":377554,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/377551\/revisions\/377554"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media\/288466"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=377551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=377551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=377551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}