{"id":1664,"date":"2016-11-30T23:19:44","date_gmt":"2016-11-30T22:19:44","guid":{"rendered":"https:\/\/www.osmocem.it\/technologie\/history\/"},"modified":"2024-03-12T17:41:38","modified_gmt":"2024-03-12T16:41:38","slug":"histoire","status":"publish","type":"page","link":"https:\/\/www.osmocem.fr\/technologie\/histoire\/","title":{"rendered":"Histoire"},"content":{"rendered":"

[vc_row row_type=”row_full_center_content” margin_top=”0″ padding_top=”0″][vc_column css=”.vc_custom_1448989235856{padding-right: 15px !important;padding-left: 15px !important;}”][vc_column_text]L’osmose est le ph\u00e9nom\u00e8ne chimico-physique par lequel deux solutions liquides se diffusent l’une dans l’autre \u00e0 travers une membrane semi-perm\u00e9able et est caus\u00e9e par la diff\u00e9rence de concentration entre les deux liquides.<\/strong><\/p>\n

Les “ciments osmotiques”<\/strong> sont des produits d’imperm\u00e9abilisation cimentaire d\u00e9velopp\u00e9s en Allemagne \u00e0 la fin des ann\u00e9es 70, bas\u00e9s sur un “mod\u00e8le osmotique” d’interpr\u00e9tation des processus d’hydratation et de solidification des liants hydrauliques.[\/vc_column_text][\/vc_column][\/vc_row][vc_row row_type=”row_full_center_content”][vc_column width=”1\/3″][vc_single_image image=”68″ img_size=”medium” alignment=”center” css_animation=”bottom-to-top” css=”.vc_custom_1480545498280{margin-top: 20px !important;}”][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”69″ img_size=”medium” alignment=”center” css_animation=”bottom-to-top” css=”.vc_custom_1480545506353{margin-top: 20px !important;}”][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”67″ img_size=”medium” alignment=”center” css_animation=”bottom-to-top” css=”.vc_custom_1480545513209{margin-top: 20px !important;}”][\/vc_column][vc_column css=”.vc_custom_1480680943073{margin-top: 25px !important;}”][vc_column_text]<\/p>\n

Le granul\u00e9 de ciment partiellement anhydre (C) repr\u00e9sente la “solution concentr\u00e9e”; le “gel de ciment” (B) est la membrane semi-perm\u00e9able; tandis que l’eau (A) est la solution dilu\u00e9e.<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row row_type=”row_full_center_content”][vc_column][vc_column_text]Dans le contexte d\u00e9crit, la chaleur d’hydratation r\u00e9duit drastiquement l’efficacit\u00e9 et la dur\u00e9e du processus d’hydratation : les granul\u00e9s de ciment sont seulement “partiellement hydrat\u00e9s”. Les exp\u00e9riences men\u00e9es avaient en effet mis en \u00e9vidence la capacit\u00e9 particuli\u00e8re des d\u00e9riv\u00e9s de l’acide tartrique \u00e0 retarder et \u00e9quilibrer les processus d’hydratation, facilitant les \u00e9changes osmotiques, la stabilisation du gel et la transition cristalline avec pour r\u00e9sultat une hydratation plus profonde et plus compl\u00e8te. Le meilleur “\u00e9quilibre” de la phase osmotique, rendu possible surtout par les catalyseurs bas\u00e9s sur des d\u00e9riv\u00e9s de l’acide tartrique, a entra\u00een\u00e9 des augmentations significatives de qualit\u00e9 et de performance, tant en termes de diffusion, d’adh\u00e9rence et d’imperm\u00e9abilit\u00e9 intrins\u00e8que de la matrice liante.[\/vc_column_text][\/vc_column][\/vc_row][vc_row row_type=”row_full_center_content” bg_image=”185″ bg_position=”center center” row_parallax=”false” padding_top=”100″ padding_bottom=”100″][vc_column][vc_custom_heading text=”LA BARRI\u00c8RE CIMENTAIRE \u00c0 L’EAU,
\nDIFFUSIVE ET IMPERM\u00c9ABLE” font_container=”tag:h2|text_align:center|color:%23ffffff” use_theme_fonts=”yes” el_class=”titoliParallax”][\/vc_column][\/vc_row][vc_row row_type=”row_full_center_content” margin_top=”0″ margin_bottom=”0″ padding_top=”50″][vc_column][vc_column_text]Les exp\u00e9riences men\u00e9es avaient montr\u00e9 que des syst\u00e8mes de ciment sp\u00e9cialement formul\u00e9s, en tant que traductions concr\u00e8tes des acquisitions d\u00e9crites, initialement d\u00e9finis comme “ciments osmotiques”<\/strong>, fournissaient d’importantes performances d’imperm\u00e9abilisation aussi bien en pr\u00e9sence occasionnelle et permanente d’eau de pluie, d’eau naturelle, d’eau souterraine, etc.<\/p>\n

L’adh\u00e9sion particuli\u00e8re de ces syst\u00e8mes, d\u00e9termin\u00e9e par la diffusion osmotique profonde, les rendait \u00e9galement adapt\u00e9s \u00e0 fonctionner tant dans des conditions de pouss\u00e9e directe (pouss\u00e9e positive) que n\u00e9gative (contre-pouss\u00e9e).<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row row_type=”row_full_center_content” class=”gruppoBtns”][vc_column width=”1\/4″][vc_button title=”M\u00e9canismes d’adh\u00e9sion” color=”custom” button_custom_color=”#00a5cc” position=”center” link=”url:https%3A%2F%2Fwww.osmocem.fr%2Ftechnologie%2Fmecanismes-dadhesion%2F|title:M%C3%A9canismes%20d’adh%C3%A9sion”][\/vc_column][vc_column width=”1\/4″][vc_button title=”Pouss\u00e9e hydrostatique” color=”custom” button_custom_color=”#00a5cc” position=”center” link=”url:https%3A%2F%2Fwww.osmocem.fr%2Ftechnologie%2Fpoussee-hydrostatique%2F|title:Pouss%C3%A9e%20hydrostatique”][\/vc_column][vc_column width=”1\/4″][vc_button title=”Conseils pratiques” color=”custom” button_custom_color=”#00a5cc” position=”center” link=”url:https%3A%2F%2Fwww.osmocem.fr%2Ftechnologie%2Fconseils-pratiques%2F|title:Conseils%20pratiques”][\/vc_column][vc_column width=”1\/4″][vc_button title=”Ligne compl\u00e8te” color=”custom” button_custom_color=”#00a5cc” position=”center” link=”url:https%3A%2F%2Fwww.osmocem.fr%2Ftechnologie%2Fligne-complete%2F|title:Ligne%20compl%C3%A8te”][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row row_type=”row_full_center_content” margin_top=”0″ padding_top=”0″][vc_column css=”.vc_custom_1448989235856{padding-right: 15px !important;padding-left: 15px !important;}”][vc_column_text]L’osmose est le ph\u00e9nom\u00e8ne chimico-physique par lequel deux solutions liquides se diffusent l’une …<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1572,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"\nHistoire - OSMOCEM<\/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:\/\/www.osmocem.fr\/technologie\/histoire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Histoire - OSMOCEM\" \/>\n<meta property=\"og:description\" content=\"[vc_row row_type=”row_full_center_content” margin_top=”0″ padding_top=”0″][vc_column css=”.vc_custom_1448989235856{padding-right: 15px !important;padding-left: 15px !important;}”][vc_column_text]L’osmose est le ph\u00e9nom\u00e8ne chimico-physique par lequel deux solutions liquides se diffusent l’une ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.osmocem.fr\/technologie\/histoire\/\" \/>\n<meta property=\"og:site_name\" content=\"OSMOCEM\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-12T16:41:38+00:00\" \/>\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=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.osmocem.fr\/technologie\/histoire\/\",\"url\":\"https:\/\/www.osmocem.fr\/technologie\/histoire\/\",\"name\":\"Histoire - 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