{"id":138969,"date":"2025-09-10T16:30:00","date_gmt":"2025-09-10T14:30:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=138969"},"modified":"2025-09-05T11:32:16","modified_gmt":"2025-09-05T09:32:16","slug":"pflanzenkohle-beton-eroeffnet-perspektiven-fuer-klimaneutrale-bauwirtschaft","status":"publish","type":"post","link":"https:\/\/stage.immo-invest.ch\/en\/pflanzenkohle-beton-eroeffnet-perspektiven-fuer-klimaneutrale-bauwirtschaft\/","title":{"rendered":"Biochar concrete opens up prospects for a climate-neutral construction industry"},"content":{"rendered":"

Four construction companies from Switzerland have joined forces to found KLARK AG<\/a>, based in Landquart GR, on 25 August 2025: Ulrich Imboden AG<\/a> from Visp VS, Logbau AG<\/a> from Maienfeld GR, Novakies AG<\/a> from Rapperswil BE and Toggenburger AG<\/a> from Winterthur. Their common goal is to make KLARK concrete<\/a>, which is CO2-neutral thanks to the addition of biochar, available throughout the country.<\/p>\n

In a press release<\/a>, they describe the founding of KLARK AG as a milestone for the Swiss construction industry: “It shows that ecological responsibility, economic thinking and cooperative structures can go hand in hand – even and especially in an industry that has long been considered sluggish.” KLARK stands for a move towards a building materials market “that not only measures climate effects, but actively changes them”. This is “industry innovation<\/span> instead of individual battles”.<\/p>\n

The KLARK climate clay is mixed with as much biochar from untreated waste wood from regional forestry until a CO2-neutral product is created. According to the information provided, it has the same properties as traditional concrete, which causes CO2 emissions of up to 250 kilograms per cubic metre.<\/p>\n

The CO2 reduction performance<\/span> has been verified with a verified life cycle assessment in accordance with the accounting rules of the Coordination Conference of Building and Property Bodies of Public Building Owners(KBOB<\/a>). The life cycle assessment results are published on the KBOB list. KLARK concrete can be produced with 50, 75 or 100 per cent sink rate and is fully recyclable.<\/p>\n

Eberhard Bau AG<\/a> from Kloten ZH, Aarebeton Aarau AG<\/a> and Arnold & Co. AG Sand- und Kieswerke<\/a> from Flüelen UR are already on board as licence holders for the production of KLARK concrete. “This creates a central competence centre for CO2-saving construction with concrete, supported by regional pioneers with a national reach,” the press release states.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ulrich Imboden AG, Logbau, Novakies and Toggenburger have founded KLARK AG. Together, they want to make a concrete available throughout Switzerland that is CO2-neutral thanks to the use of biochar. The aim is to turn buildings and infrastructure into CO2 sinks.<\/p>\n","protected":false},"author":2,"featured_media":138964,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"footnotes":""},"categories":[22697,22358,12476,12485,22698],"tags":[14716,12525,12526,54372,12528,20297],"class_list":["post-138969","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company","category-construction","category-immonews","category-projects-en","category-sustainability","tag-co2-neutral-en","tag-immoinvest-en","tag-immonews-en","tag-klimabeton-en","tag-news-en","tag-pflanzenkohle-en"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"Ulrich Imboden AG, Logbau, Novakies and Toggenburger have founded KLARK AG. Together, they want to make a concrete available throughout Switzerland that is CO2-neutral thanks to the use of biochar. The aim is to turn buildings and infrastructure into CO2 sinks.","autor":"ce\/mm","ort":"Landquart GR ","bildunterschrift":"","bild_im_grid":false,"gallerie":"","newsim":"","zusammenfassung":""},"featured_image_src":"https:\/\/stage.immo-invest.ch\/wp-content\/uploads\/2025\/09\/banoviag_realistic_construction_site_in_Switzerland_with_mode_8a39715f-3cb2-4595-ae6c-65cc6e2ba977_2-336x168.png","_links":{"self":[{"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/posts\/138969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/comments?post=138969"}],"version-history":[{"count":0,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/posts\/138969\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/media\/138964"}],"wp:attachment":[{"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/media?parent=138969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/categories?post=138969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stage.immo-invest.ch\/en\/wp-json\/wp\/v2\/tags?post=138969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}