{"id":39792,"date":"2024-09-05T10:48:31","date_gmt":"2024-09-05T08:48:31","guid":{"rendered":"https:\/\/conservation-science.ch\/?page_id=39792"},"modified":"2024-09-05T10:48:31","modified_gmt":"2024-09-05T08:48:31","slug":"fast-identification-of-the-source-of-salt-efflorescence-by-means-of-ph-paper-1-14","status":"publish","type":"page","link":"https:\/\/conservation-science.ch\/?page_id=39792&lang=en","title":{"rendered":"Fast identification of the source of salt efflorescence by means of pH paper 1-14"},"content":{"rendered":"

The source of alkaline salt efflorescence (pH > 8) on monuments is always a building material (or restoration\/conservation material) which is itself alkaline, such as cement, hydraulic lime or water glass (Schaffer, 1932 ; Arnold, 1985).<\/p>\n

Therefore, if the measurement with a pH paper made on an efflorescence in situ or in laboratory gives an alkaline result (pH > 8), the search for the origin of the salts is very quickly orientated. On the contrary, if the pH is neutral or acid (\u00a0\u2264 8), the origin of the soluble salts can only be found after more sophisticated analyses and their origin could even be alkaline materials as the ones mentioned above.<\/p>\n\n\n\n\n
\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n
In situ measurement:\u00a0<\/strong>
\n– humidify the pH paper
\n– hold it into the efflorescence or frict on it
\n– read the value<\/span><\/td>\n		Laboratory measurement:<\/strong>
\n– dissolve the salts in a drop of water
\n– hold the pH paper into the drop
\n– read the value<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Arnold, A. (1985). \u00ab\u00a0Moderne alkalische Baustoffe und die Probleme bei der Konservierung von Denkm\u00e4lern.\u00a0\u00bb Natursteinkonservierung, Arbeitshefte des Bayerischen Landesamtes f\u00fcr Denkmalpflege, 31, 152-162.\u00a0\u00a0<\/span><\/p>\n

Schaffer, R. J. (1932). \u00ab\u00a0The Weathering of Natural Building Stones.\u00a0\u00bb Facsimile of the 1932 edition , published by Construction Research communications Ltd, by permission of Building Research Establishment Ltd.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

The source of alkaline salt efflorescence (pH > 8) on monuments is always a building material (or restoration\/conservation material) which is itself alkaline, such as cement, hydraulic lime or water glass (Schaffer, 1932 ; Arnold, 1985). Therefore, if the measurement with a pH paper made on an efflorescence in situ or in laboratory gives an … Continuer la lecture de Fast identification of the source of salt efflorescence by means of pH paper 1-14<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":39773,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-39792","page","type-page","status-publish","hentry"],"yoast_head":"\nFast identification of the source of salt efflorescence by means of pH paper 1-14 - 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=39792&lang=en\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fast identification of the source of salt efflorescence by means of pH paper 1-14 - Bl\u00e4uer - Conservation - Science\" \/>\n<meta property=\"og:description\" content=\"The source of alkaline salt efflorescence (pH > 8) on monuments is always a building material (or restoration\/conservation material) which is itself alkaline, such as cement, hydraulic lime or water glass (Schaffer, 1932 ; Arnold, 1985). Therefore, if the measurement with a pH paper made on an efflorescence in situ or in laboratory gives an … Continuer la lecture de Fast identification of the source of salt efflorescence by means of pH paper 1-14\" \/>\n<meta property=\"og:url\" content=\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en\" \/>\n<meta property=\"og:site_name\" content=\"Bl\u00e4uer - Conservation - Science\" \/>\n<meta property=\"og:image\" content=\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/papierphinsitu_ptt.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=39792&lang=en\",\"url\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en\",\"name\":\"Fast identification of the source of salt efflorescence by means of pH paper 1-14 - Bl\u00e4uer - Conservation - Science\",\"isPartOf\":{\"@id\":\"https:\/\/conservation-science.ch\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en#primaryimage\"},\"image\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en#primaryimage\"},\"thumbnailUrl\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/papierphinsitu_ptt.jpg\",\"datePublished\":\"2024-09-05T08:48:31+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en#primaryimage\",\"url\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/papierphinsitu_ptt.jpg\",\"contentUrl\":\"https:\/\/csc-sarl.ch\/wp-content\/uploads\/2018\/06\/papierphinsitu_ptt.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/conservation-science.ch\/?page_id=39792&lang=en#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/conservation-science.ch\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Tricks\",\"item\":\"https:\/\/conservation-science.ch\/?page_id=39769&lang=en\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Archived tricks\",\"item\":\"https:\/\/conservation-science.ch\/?page_id=39773&lang=en\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Fast identification of the source of salt efflorescence by means of pH paper 1-14\"}]},{\"@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":"Fast identification of the source of salt efflorescence by means of pH paper 1-14 - 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=39792&lang=en","og_locale":"fr_FR","og_type":"article","og_title":"Fast identification of the source of salt efflorescence by means of pH paper 1-14 - Bl\u00e4uer - Conservation - Science","og_description":"The source of alkaline salt efflorescence (pH > 8) on monuments is always a building material (or restoration\/conservation material) which is itself alkaline, such as cement, hydraulic lime or water glass (Schaffer, 1932 ; Arnold, 1985). 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