{"id":12358,"date":"2020-07-30T10:35:17","date_gmt":"2020-07-30T08:35:17","guid":{"rendered":"http:\/\/navier-lab.fr\/?page_id=12358"},"modified":"2020-07-30T10:35:17","modified_gmt":"2020-07-30T08:35:17","slug":"cristallisation-et-degradation-des-materiaux-cimentaires","status":"publish","type":"page","link":"https:\/\/navier-lab.fr\/en\/research\/multi-echelle\/couplages-multiphysiques-et-modelisation-poromecanique-des-materiaux-du-genie-civil\/cristallisation-et-degradation-des-materiaux-cimentaires\/","title":{"rendered":"Cristallisation et d\u00e9gradation des mat\u00e9riaux cimentaires"},"content":{"rendered":"<p><section class=\"kc-elm kc-css-729923 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-467805 kc_col-sm-12 kc_column kc_col-sm-12\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-699352 kc_text_block\"><\/p>\n<p>Les mat\u00e9riaux cimentaires peuvent \u00eatre soumis des agressions par leur environnement, pouvant conduire \u00e0 des cristallisations au sein du mat\u00e9riau: le gel va induire une cristallisation de glace dans la porosit\u00e9, alors que la pr\u00e9sence de sulfates va induire des r\u00e9actions chimiques conduisant \u00e0 des pr\u00e9cipitations d\u2019ettringite et\/ou de gypse. Ces cristallisations peuvent faire gonfler le mat\u00e9riau et l\u2019endommager, voire conduire \u00e0 sa ruine. Ces transitions de phase intra-porales et leurs cons\u00e9quences macroscopiques sont \u00e9tudi\u00e9es au Laboratoire Navier, tant exp\u00e9rimentalement que par mod\u00e9lisation porom\u00e9canique. On cherche notamment \u00e0 comprendre pourquoi une cristallisation conduit \u00e0 une pression de cristallisation et \u00e0 un gonflement. Pour cela, une exp\u00e9rience originale permettant des injections rapides de sulfate dans des mat\u00e9riaux cimentaires en conditions oedom\u00e9triques ou isochores a notamment \u00e9t\u00e9 d\u00e9velopp\u00e9e.<\/p>\n<p>\n<\/div><\/div><\/div><\/div><\/div><\/section><section class=\"kc-elm kc-css-352497 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-264590 kc_col-sm-12 kc_column kc_col-sm-12\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-854850 kc_shortcode kc_single_image\">\n\n        <a rel=\"prettyPhoto\" class=\"kc-pretty-photo\" href=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/figure-cristallisation-d\u00e9gradation-mat\u00e9riaux-cimentaires.jpg\" title=\"\" target=\"\">\n        <img decoding=\"async\" src=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/figure-cristallisation-d\u00e9gradation-mat\u00e9riaux-cimentaires.jpg\" class=\"\" alt=\"\" \/>    <\/a>\n    <\/div>\n<\/div><\/div><\/div><\/div><\/section><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":12354,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-12358","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/comments?post=12358"}],"version-history":[{"count":1,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12358\/revisions"}],"predecessor-version":[{"id":12359,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12358\/revisions\/12359"}],"up":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12354"}],"wp:attachment":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/media?parent=12358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}