{"id":2873,"date":"2020-03-03T09:45:13","date_gmt":"2020-03-03T08:45:13","guid":{"rendered":"http:\/\/www.lgcge.fr\/?p=2873"},"modified":"2024-01-26T15:32:41","modified_gmt":"2024-01-26T14:32:41","slug":"seminaire-lgcge","status":"publish","type":"post","link":"https:\/\/www.lgcge.fr\/en\/seminaire-lgcge\/","title":{"rendered":"LGCgE Seminar"},"content":{"rendered":"<p><strong>The March 26, 2020 seminar is cancelled.<\/strong><\/p>\n<p>Dans le cadre des cycles de s\u00e9minaires organis\u00e9s par le LGCgE, le prochain s\u00e9minaire se d\u00e9roulera le<\/p>\n<p style=\"text-align: center;\"><strong> jeudi 26 mars \u00e0 15h<\/strong><br \/>\nIUT de B\u00e9thune &#8211; Universit\u00e9 d&#8217;Artois<\/p>\n<p>Le s\u00e9minaire sera anim\u00e9 par :<\/p>\n<ul>\n<li><strong>S. KENAI<\/strong><\/li>\n<\/ul>\n<p><em>Performance of stabilised earth with natural fibers<\/em><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>Karim MILED<\/strong>, Directeur du Laboratoire de G\u00e9nie Civil de l&#8217;ENIT de Tunis<\/li>\n<\/ul>\n<p><em>Pr\u00e9diction analytique de la fraction volumique de l&#8217;aur\u00e9ole de transition et de ses effets sur les d\u00e9formations instantan\u00e9es et diff\u00e9r\u00e9es propres du b\u00e9ton<\/em><\/p>\n<p>R\u00e9sum\u00e9 :<\/p>\n<p>Nous avons propos\u00e9 r\u00e9cemment une mod\u00e9lisation g\u00e9om\u00e9trique discr\u00e8te et probabiliste de la microstructure du b\u00e9ton, bas\u00e9e sur la technique de la tessellation de Voronoi et permettant d&#8217;\u00e9valuer analytiquement la fraction volumique de l&#8217;aur\u00e9ole de transition (ITZ) dans le b\u00e9ton en fonction de sa microstructure. Ensuite, le module d&#8217;Young du b\u00e9ton sont pr\u00e9dits analytiquement aussi, en se basant sur un mod\u00e8le d&#8217;homog\u00e9n\u00e9isation quadrisph\u00e8re. Ce dernier est&nbsp; une extension du mod\u00e8le trisph\u00e8re de Le Roy et de Larrard qui ne prends pas en compte la pr\u00e9sence de la phase ITZ dans le b\u00e9ton. Le nouveau mod\u00e8le propos\u00e9 permet de mettre en \u00e9vidence l&#8217;effet non n\u00e9gligeable de l&#8217;ITZ sur le module \u00e9lastique du b\u00e9ton ordinaire, en particulier. Enfin, l&#8217;application du mod\u00e8le quadrisph\u00e8re a \u00e9t\u00e9 \u00e9tendue \u00e0 la visco-\u00e9lasticit\u00e9 lin\u00e9aire non vieillissante pour pr\u00e9dire l&#8217;effet de l&#8217;ITZ sur le fluage propre et le retrait endog\u00e8ne du b\u00e9ton. Les pr\u00e9dictions analytiques trouv\u00e9es montrent que cet effet est n\u00e9gligeable compar\u00e9 \u00e0 celui du volume granulaire sur ces d\u00e9formations diff\u00e9r\u00e9es propres du b\u00e9ton.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The March 26, 2020 seminar is cancelled.<\/p>","protected":false},"author":15305,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2873","post","type-post","status-publish","format-standard","hentry","category-archives"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/posts\/2873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/users\/15305"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/comments?post=2873"}],"version-history":[{"count":6,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/posts\/2873\/revisions"}],"predecessor-version":[{"id":3582,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/posts\/2873\/revisions\/3582"}],"wp:attachment":[{"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/media?parent=2873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/categories?post=2873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lgcge.fr\/en\/wp-json\/wp\/v2\/tags?post=2873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}