{"id":1564,"date":"2016-11-02T17:18:21","date_gmt":"2016-11-02T16:18:21","guid":{"rendered":"https:\/\/www.osmocem.it\/home\/"},"modified":"2024-03-15T18:42:28","modified_gmt":"2024-03-15T17:42:28","slug":"home","status":"publish","type":"page","link":"https:\/\/www.osmocem.fr\/","title":{"rendered":"HOME"},"content":{"rendered":"

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Ciments d’\u00e9tanch\u00e9it\u00e9 osmotiques rigides, d\u00e9formables et flexibles<\/h3>\n

GROUTS D’\u00c9TANCH\u00c9IT\u00c9, MORTIERS ET ENDUITS DE CIMENT ADAPT\u00c9S POUR R\u00c9SISTER \u00c0 LA FORCE DE L’EAU DANS DES CONDITIONS DE POUSSE POSITIVE ET N\u00c9GATIVE<\/h2>\n

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probl\u00e8me<\/h3>\n

\"problema\"<\/div>\n

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La principale cause de la d\u00e9gradation des pi\u00e8ces souterraines non \u00e9tanch\u00e9es ou insuffisamment prot\u00e9g\u00e9es, sont les infiltrations d’eau<\/strong>, provenant des eaux souterraines ou de l’humidit\u00e9 normale stationnaire dans le sol sur lequel reposent les fondations. La pouss\u00e9e de la pression hydrostatique, \u00e0 travers le passage de fissures, d’espaces de reptation ou de vides capillaires, tend \u00e0 atteindre l’int\u00e9rieur de la pi\u00e8ce souterraine, provoquant une forte humidit\u00e9 dans les murs, initialement identifiable par le retrait de la peinture existante, avec la d\u00e9gradation subs\u00e9quente et le d\u00e9tachement de l’enduit et enfin avec l’indisponibilit\u00e9 de la pi\u00e8ce due \u00e0 la pr\u00e9sence d\u00e9sagr\u00e9able de moisissure, mauvaises odeurs et efflorescence saline<\/strong>. Le haut niveau d’humidit\u00e9 pr\u00e9sent dans ces pi\u00e8ces provoque \u00e9galement un co\u00fbt de chauffage plus \u00e9lev\u00e9 et par cons\u00e9quent des co\u00fbts de logement plus \u00e9lev\u00e9s, en raison de la plus grande perte de chaleur exerc\u00e9e.<\/strong><\/p>\n

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solution<\/h3>\n

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Les infiltrations d’eau ne peuvent \u00eatre bloqu\u00e9es qu’en rendant la structure de confinement imperm\u00e9able<\/strong>, responsable du support de la pouss\u00e9e hydrostatique. L’\u00e9tude et le d\u00e9veloppement de produits et de techniques d’intervention visant \u00e0 rendre les zones souterraines malsaines utilisables, ont contribu\u00e9 \u00e0 la cr\u00e9ation de produits cimentaires particuliers appel\u00e9s “ciments osmotiques ou compos\u00e9s de ciment osmotique”, sp\u00e9cifiques pour l’\u00e9tanch\u00e9it\u00e9 interne et \/ ou externe des structures souterraines. Les “ciments osmotiques”, \u00e9tudi\u00e9s sur la base d’un “mod\u00e8le osmotique” d’interpr\u00e9tation des processus d’hydratation et de solidification des liants hydrauliques qui les rend particuli\u00e8rement adh\u00e9sifs et p\u00e9n\u00e9trants dans les supports \u00e0 travers la diffusion osmotique profonde, sont aptes \u00e0 op\u00e9rer tant sous des conditions de pouss\u00e9e directe (pouss\u00e9e positive) que de contre-pouss\u00e9e (pouss\u00e9e n\u00e9gative).<\/p>\n

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\n

avantages<\/h3>\n

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Les syst\u00e8mes d’\u00e9tanch\u00e9it\u00e9 traditionnels sont bas\u00e9s, en g\u00e9n\u00e9ral, sur l’emplacement lors de la construction dans les stratifications structurelles affect\u00e9es par des \u00e9v\u00e9nements perm\u00e9atifs ou par le besoin de contenir de l’eau, de barri\u00e8res imperm\u00e9ables, g\u00e9n\u00e9ralement constitu\u00e9es de feuilles pr\u00e9fabriqu\u00e9es synth\u00e9tiques ou bitumineuses. Les produits d’\u00e9tanch\u00e9it\u00e9 cimentaires osmotiques de la ligne OSMOCEM<\/strong>, en raison de leurs caract\u00e9ristiques technologiques particuli\u00e8res, de leur utilisation pr\u00e9vue et des m\u00e9thodes d’application qui les distinguent, sont \u00e0 consid\u00e9rer comme des produits \u00e0 utiliser pour des “\u00e9tanch\u00e9it\u00e9s sp\u00e9ciales”<\/strong>, capables de permettre des interventions \u00e0 la fois en cours, \u00e0 la place d’\u00e9tanch\u00e9it\u00e9s traditionnelles, et pour des adaptations ult\u00e9rieures de l’ouvrage lui-m\u00eame \u00e0 des conditions d’exploitation modifi\u00e9es ou \u00e0 des \u00e9v\u00e9nements accidentels (infiltrations, perm\u00e9ations, humidit\u00e9, etc.).<\/p>\n

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