{"id":79432,"date":"2021-03-15T04:31:00","date_gmt":"2021-03-15T03:31:00","guid":{"rendered":"https:\/\/blog.bluebeam.com\/se\/?p=79432"},"modified":"2021-04-19T09:50:39","modified_gmt":"2021-04-19T07:50:39","slug":"hempcrete-as-a-building-material","status":"publish","type":"post","link":"https:\/\/blog.bluebeam.com\/se\/hempcrete-as-a-building-material\/","title":{"rendered":"Det gamla, och ovanliga, byggmaterialet som f\u00f6rs\u00f6ker g\u00f6ra comeback \u2013 hampa"},"content":{"rendered":"\n

Milj\u00f6problemen med m\u00e5nga av de vanliga moderna byggmetoderna \u00e4r v\u00e4ldokumenterade.<\/a>I takt med att byggbranschen blir mer medveten om sin st\u00e4llning som v\u00e4rldens tredje st\u00f6rsta producent av koldioxidutsl\u00e4pp<\/a> och r\u00f6r sig mot en ny framtid har jakten p\u00e5 mer h\u00e5llbara alternativ till traditionella material<\/a> blivit en stark drivkraft inom branschen.<\/p>\n\n\n\n

Hampakalk<\/a> \u00e4r ett byggmaterial p\u00e5 frammarsch. Det \u00e4r en biokomposit som kan fungera som alternativ till att mura med traditionell kalkstenscement, vilket reducerar koldioxidutsl\u00e4ppen fr\u00e5n betongblandningen och f\u00f6rb\u00e4ttrar dess isolerings- och energibevarande egenskaper. Materialet har dessutom m\u00e5nga andra specifika egenskaper.<\/p>\n\n\n\n

Ett nytt perspektiv p\u00e5 historiska byggtekniker<\/strong><\/h3>\n\n\n\n

Hampakalk \u00e4r en byggteknik som blir allt mer popul\u00e4r idag, men inspirationen kommer fr\u00e5n en ov\u00e4ntat gammal byggteknik.<\/p>\n\n\n\n

\u201dI sin mest grundl\u00e4ggande form \u00e4r hampakalk ungef\u00e4r 1 000 \u00e5r gammalt, kanske \u00e4nnu \u00e4ldre\u201d, s\u00e4ger Tai Olson<\/a>, Director of Operations p\u00e5 US Heritage Group, ett Chicago-baserat f\u00f6retag som tillverkar hampakalk och erbjuder konsultation f\u00f6r byggprojekt. \u201dMetoden att blanda biomassa med kalk \u00e4r lika gammal som ur\u00e5ldriga former av ler- eller lerhalmstegel.\u201d<\/p>\n\n\n\n

Faktum \u00e4r att metoden anv\u00e4ndes f\u00f6r att bygga Kinesiska muren.<\/a><\/p>\n\n\n\n

\"\"
\u201dHampakalk \u00e4r ett permeabelt byggmaterial, vilket inneb\u00e4r att det f\u00f6rhindrar flytande vatten fr\u00e5n att tr\u00e4nga genom v\u00e4ggar, samtidigt som det sl\u00e4pper igenom vatten\u00e5nga\u201d \u2013 Tai <\/a>Olson<\/a>, Director of Operations p\u00e5 US Heritage Group<\/figcaption><\/figure>\n\n\n\n

En fransk byggare tolkade de ur\u00e5ldriga teknikerna med hampakalk och gav dem en modern twist n\u00e4r han letade efter nya s\u00e4tt att anv\u00e4nda lokala material. \u201dDet var en ingenj\u00f6r i Frankrike som f\u00f6rs\u00f6kte restaurera och uppdatera gamla franska bondg\u00e5rdar<\/a>\u201d, s\u00e4ger Olson.<\/p>\n\n\n\n

I ett f\u00f6rs\u00f6k att reducera byggkostnaderna med lokala material uppt\u00e4ckte han att lokala b\u00f6nder hade m\u00e4ngder med hampa \u00f6ver fr\u00e5n den industriella sk\u00f6rdeprocessen.<\/p>\n\n\n\n

\u201dHan uppt\u00e4ckte att man kunde blanda hampastj\u00e4lkarna fr\u00e5n de lokala g\u00e5rdarna med kalk, och att man d\u00e5 fick ett bra isoleringsmaterial f\u00f6r fyllnad\u201d, s\u00e4ger Olson, och detta ledde till att en tidig variant av hampakalk skapades.<\/p>\n\n\n\n

Hampans unika egenskaper<\/strong><\/h3>\n\n\n\n

Att arkitekten valde att anv\u00e4nda hampa som byggmaterial m\u00e5 ha berott p\u00e5 vad som fanns tillg\u00e4ngligt i n\u00e4rheten snarare \u00e4n p\u00e5 n\u00e5gon genomt\u00e4nkt plan. Men det visade sig att han snubblat \u00f6ver ett organiskt material vars egenskaper var perfekta f\u00f6r att skapa h\u00e5llbara bost\u00e4der.<\/p>\n\n\n\n

\u201dHampans cellstruktur \u00e4r full av fina mikror\u00f6r, sm\u00e5 kapill\u00e4rer som passerar genom sp\u00e5nen\u201d, s\u00e4ger Olson. \u201dDet ger ett material som \u00e4r mycket permeabelt, med ett system som andas, men det kan ocks\u00e5 lagra stora m\u00e4ngder fukt i cellstrukturen utan att det kondenseras till vatten. Cellstrukturen g\u00f6r att vatten enkelt kan passera, och den beh\u00e5ller ocks\u00e5 lite vatten vilket bidrar till termisk tr\u00f6ghet.\u201d<\/p>\n\n\n\n

Mikror\u00f6ren g\u00f6r att byggnader som byggts med hampakalk blir mer temperaturstabila eftersom man skapar en mikrobiom inuti materialets struktur.<\/p>\n\n\n\n

\u201dHampakalk \u00e4r ett permeabelt byggmaterial, vilket inneb\u00e4r att det f\u00f6rhindrar flytande vatten fr\u00e5n att tr\u00e4nga igenom v\u00e4ggen, samtidigt som det l\u00e5ter \u00e5nga passera\u201d, s\u00e4ger Olson. \u201dDet gasformiga vattnet som fl\u00f6dar genom byggnader i form av fukt och \u00e5nga kan passera in i v\u00e4ggen, genom den och komma ut p\u00e5 andra sidan utan kondensering eller droppbildning inuti sj\u00e4lva v\u00e4ggen.\u201d<\/p>\n\n\n\n

Dessa naturliga strukturer skapar ett passivt system f\u00f6r fuktkontroll<\/a> som reducerar ansamlingen av fukt och minskar risken f\u00f6r problem med m\u00f6gel och r\u00f6ta, vilket g\u00f6r det till det perfekta materialet f\u00f6r v\u00e5ta och temperaturvarierade klimat. Det skapar ocks\u00e5 termisk tr\u00f6ghet genom ett slutet system d\u00e4r vatten\u00e5ngor fungerar som en v\u00e4rmebuffert och motverkar uppv\u00e4rmning eller kylning av byggnaden.<\/p>\n\n\n\n

\"\"
Materialet bidrar till l\u00e4gre koldioxidutsl\u00e4pp under tillverkningsprocessen, och den organiska sammans\u00e4ttningen inneb\u00e4r dessutom att hampakalken absorberar kol fr\u00e5n omgivningen n\u00e4r det v\u00e4xer. Hampa \u00e4r en v\u00e4xt med utm\u00e4rkta kolbindande egenskaper som suger upp ungef\u00e4r tio ton kol per tunnland.
<\/figcaption><\/figure>\n\n\n\n

\u201dVattnet i v\u00e4ggen stoppar faktiskt temperaturf\u00f6r\u00e4ndringen fr\u00e5n att passera hela v\u00e4gen genom v\u00e4ggen, och temperaturf\u00f6r\u00e4ndringen kommer att \u00e5ka tillbaka ut varifr\u00e5n den kom\u201d, s\u00e4ger Olson. \u201dDet hampakalk i sj\u00e4lva verket g\u00f6r \u00e4r att det skapar ett v\u00e4ldigt, v\u00e4ldigt stabilt inomhusklimat. Det g\u00f6r att temperaturen utomhus har en betydligt mindre inverkan p\u00e5 hur boendemilj\u00f6n \u00e4r inomhus.\u201d<\/p>\n\n\n\n

Flera milj\u00f6m\u00e4ssiga f\u00f6rdelar<\/strong> <\/h3>\n\n\n\n

En av hampakalkens fr\u00e4msta milj\u00f6m\u00e4ssiga f\u00f6rdelar \u00e4r dess f\u00f6rm\u00e5ga att reducera byggnadens energif\u00f6rbrukningen. Kostnaderna f\u00f6r uppv\u00e4rmning och kylning blir betydligt l\u00e4gre under byggnadens livscykel. Men det finns f\u00f6rdelar \u00e4ven p\u00e5 tillverkningssidan.<\/p>\n\n\n\n

\u201dHampakalk skapar l\u00e4gre utsl\u00e4pp av v\u00e4xthusgaser j\u00e4mf\u00f6rt med betong\u201d, s\u00e4ger Olson. \u201dM\u00e4ngden koldioxid som kalken sl\u00e4pper ut under tillverkningen \u00e5tervinns helt och h\u00e5llet under h\u00e4rdningsprocessen. Du binder i sj\u00e4lva verket upp en stor m\u00e4ngd v\u00e4xthusgaser och koldioxid under h\u00e4rdningsprocessen.\u201d Den h\u00e4r processen kallas f\u00f6r kalkcykeln<\/a>.<\/p>\n\n\n\n

Materialet bidrar till l\u00e4gre koldioxidutsl\u00e4pp under tillverkningsprocessen, och den organiska sammans\u00e4ttningen inneb\u00e4r dessutom att hampakalken absorberar kol fr\u00e5n omgivningen n\u00e4r det v\u00e4xer. Hampa \u00e4r en v\u00e4xt med utm\u00e4rkta kolbindande egenskaper som suger upp ungef\u00e4r tio ton kol per tunnland.<\/p>\n\n\n\n

Faktum \u00e4r att vissa framtidsforskare menar att massplantering av hampa och \u00f6kad anv\u00e4ndning av hampa inom byggbranschen<\/a> kan erbjuda en ov\u00e4ntad l\u00f6sning p\u00e5 klimatf\u00f6r\u00e4ndringarna. Eftersom det har unika egenskaper som kols\u00e4nka s\u00e4ger Olson att \u201dde flesta hus byggda av hampakalk kommer att ha ett negativt koldioxidavtryck\u201d.<\/p>\n\n\n\n

Eftersom USA forts\u00e4tter att ut\u00f6ka odlingen av industriell hampa sedan det blev lagligt att odla 2018<\/a> kommer det att bli allt enklare att k\u00f6pa in r\u00e5varorna f\u00f6r att tillverka hampakalk. Och tack vare dess unika kombination av milj\u00f6v\u00e4nliga egenskaper kan vi f\u00f6rv\u00e4nta oss att det ovanliga materialet kommer att bli allt vanligare fram\u00f6ver.<\/p>\n\n\n\n

\"Genomskinligt<\/div>

H\u00e4r kan man se hur genomskinligt tr\u00e4 kan bli ett nytt designelement f\u00f6r arkitekter.<\/h2>
<\/div><\/div>
SE HUR<\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Hampakalk \u00e4r en biokomposit som fungerar som alternativ till traditionell kalk. Det \u00e4r en betongblandning med en l\u00e4gre milj\u00f6p\u00e5verkan och dessutom b\u00e4ttre isolerings- och energibevarande egenskaper.<\/p>\n","protected":false},"author":595,"featured_media":79433,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[145],"tags":[16721,16715],"class_list":["post-79432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation","tag-building-materials","tag-sustainability","category-145","description-off"],"yoast_head":"\nDet ovanliga byggmaterialet som f\u00f6rs\u00f6ker g\u00f6ra comeback: hampa | Built<\/title>\n<meta name=\"description\" content=\"Hampakalk \u00e4r en biokomposit som kan minska koldioxidp\u00e5verkan vid betongblandningen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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