{"id":39759,"date":"2024-09-05T10:33:54","date_gmt":"2024-09-05T08:33:54","guid":{"rendered":"https:\/\/conservation-science.ch\/?page_id=39759"},"modified":"2024-11-16T21:35:58","modified_gmt":"2024-11-16T20:35:58","slug":"damp-patches","status":"publish","type":"page","link":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en","title":{"rendered":"Damp patches"},"content":{"rendered":"<p style=\"text-align: justify;\"><strong>2011<\/strong> &#8211; Matthieu Fuscien, MAS student in Conservation of cultural heritage (<a href=\"http:\/\/www.unige.ch\/lettres\/armus\/istar\/pages\/page.php?id=41\" target=\"_blank\" rel=\"noopener\">UNIGE<\/a>) has completed the work experience for his diploma in our laboratory. He has studied<strong><span style=\"color: #996600;\"> humid patches<\/span><\/strong> that are visible on numerous historic buildings. This study, based on one hand on case studies from the city of Fribourg and on the other hand on an experimental approach, has allowed to show once again that the presence of hygroscopic salts (chlorides, nitrates) within the construction materials can explain on its own the existence of these patches (<a href=\"\/en\/tricks\/archived-tricks\/on-the-origin-of-the-moist-areas\/\">see our archived tricks<\/a>).<\/p>\n<p style=\"text-align: justify;\">The experimental part of the study has shown that if the materials of a building are polluted with hygroscopic salts and if the ambient relative humidity remains regularly on a high level, liquid water (qualified as capillary water) can appear and persist within the porosity of the materials as a consequence of diurnal temperature variations, as a consequence of a simple absorption of ambient water vapour.<\/p>\n<p style=\"text-align: justify;\">The report, at the moment in the correction phase, will soon e accessible here. In the mean time, some extracts can be consulted :<\/p>\n<p><strong>Buildings studied in Fribourg :<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-29758\" src=\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg\" alt=\"\" width=\"177\" height=\"113\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-29759\" src=\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_rueposte1_br_150px.jpg\" alt=\"\" width=\"167\" height=\"111\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-29760\" src=\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/fr_fr_nd_131109xb_150px.jpg\" alt=\"\" width=\"143\" height=\"108\" \/><\/p>\n<p><strong>Some extracts from the experimental part see our French <a href=\"\/activites\/recherche-appliquee\/taches-humides\/\">page \u201ctaches humides\u201d<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>2011 &#8211; Matthieu Fuscien, MAS student in Conservation of cultural heritage (UNIGE) has completed the work experience for his diploma in our laboratory. He has studied humid patches that are visible on numerous historic buildings. This study, based on one hand on case studies from the city of Fribourg and on the other hand on &hellip; <a href=\"https:\/\/conservation-science.ch\/?page_id=39759&#038;lang=en\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Damp patches<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":39750,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-39759","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Damp patches - Bl\u00e4uer - Conservation - Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Damp patches - Bl\u00e4uer - Conservation - Science\" \/>\n<meta property=\"og:description\" content=\"2011 &#8211; Matthieu Fuscien, MAS student in Conservation of cultural heritage (UNIGE) has completed the work experience for his diploma in our laboratory. He has studied humid patches that are visible on numerous historic buildings. This study, based on one hand on case studies from the city of Fribourg and on the other hand on &hellip; Continuer la lecture de Damp patches\" \/>\n<meta property=\"og:url\" content=\"https:\/\/conservation-science.ch\/?page_id=39759&amp;lang=en\" \/>\n<meta property=\"og:site_name\" content=\"Bl\u00e4uer - Conservation - Science\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-16T20:35:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en\",\"url\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en\",\"name\":\"Damp patches - Bl\u00e4uer - Conservation - Science\",\"isPartOf\":{\"@id\":\"https:\/\/conservation-science.ch\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage\"},\"image\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage\"},\"thumbnailUrl\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg\",\"datePublished\":\"2024-09-05T08:33:54+00:00\",\"dateModified\":\"2024-11-16T20:35:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage\",\"url\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg\",\"contentUrl\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/conservation-science.ch\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Activity\",\"item\":\"https:\/\/conservation-science.ch\/?page_id=39638&lang=en\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Applied research\",\"item\":\"https:\/\/conservation-science.ch\/?page_id=39750&lang=en\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Damp patches\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/conservation-science.ch\/#website\",\"url\":\"https:\/\/conservation-science.ch\/\",\"name\":\"CSC - Conservation - Sciences\",\"description\":\"Transmission de connaissances dans le domaine des sciences de la conservation du patrimoine b\u00e2ti\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/conservation-science.ch\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Damp patches - Bl\u00e4uer - Conservation - Science","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en","og_locale":"fr_FR","og_type":"article","og_title":"Damp patches - Bl\u00e4uer - Conservation - Science","og_description":"2011 &#8211; Matthieu Fuscien, MAS student in Conservation of cultural heritage (UNIGE) has completed the work experience for his diploma in our laboratory. He has studied humid patches that are visible on numerous historic buildings. This study, based on one hand on case studies from the city of Fribourg and on the other hand on &hellip; Continuer la lecture de Damp patches","og_url":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en","og_site_name":"Bl\u00e4uer - Conservation - Science","article_modified_time":"2024-11-16T20:35:58+00:00","og_image":[{"url":"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en","url":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en","name":"Damp patches - Bl\u00e4uer - Conservation - Science","isPartOf":{"@id":"https:\/\/conservation-science.ch\/#website"},"primaryImageOfPage":{"@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage"},"image":{"@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage"},"thumbnailUrl":"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg","datePublished":"2024-09-05T08:33:54+00:00","dateModified":"2024-11-16T20:35:58+00:00","breadcrumb":{"@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/conservation-science.ch\/?page_id=39759&lang=en"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#primaryimage","url":"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg","contentUrl":"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/100731_fr_portette_br_150px.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/conservation-science.ch\/?page_id=39759&lang=en#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/conservation-science.ch\/"},{"@type":"ListItem","position":2,"name":"Activity","item":"https:\/\/conservation-science.ch\/?page_id=39638&lang=en"},{"@type":"ListItem","position":3,"name":"Applied research","item":"https:\/\/conservation-science.ch\/?page_id=39750&lang=en"},{"@type":"ListItem","position":4,"name":"Damp patches"}]},{"@type":"WebSite","@id":"https:\/\/conservation-science.ch\/#website","url":"https:\/\/conservation-science.ch\/","name":"CSC - Conservation - Sciences","description":"Transmission de connaissances dans le domaine des sciences de la conservation du patrimoine b\u00e2ti","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/conservation-science.ch\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/pages\/39759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/conservation-science.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=39759"}],"version-history":[{"count":3,"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/pages\/39759\/revisions"}],"predecessor-version":[{"id":40497,"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/pages\/39759\/revisions\/40497"}],"up":[{"embeddable":true,"href":"https:\/\/conservation-science.ch\/index.php?rest_route=\/wp\/v2\/pages\/39750"}],"wp:attachment":[{"href":"https:\/\/conservation-science.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=39759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}