{"id":1466,"date":"2018-04-25T14:58:37","date_gmt":"2018-04-25T14:58:37","guid":{"rendered":"http:\/\/puntabegonagaleriak.eus\/?page_id=1466"},"modified":"2018-04-25T14:58:37","modified_gmt":"2018-04-25T14:58:37","slug":"d5","status":"publish","type":"page","link":"https:\/\/puntabegonagaleriak.eus\/fr\/d5\/","title":{"rendered":"d5"},"content":{"rendered":"<p>[vc_row][vc_column width=\u00a0\u00bb1\/1&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh1&Prime; text_size=\u00a0\u00bbh1&Prime;]<strong>D.5<\/strong> Apparition de cro\u00fbte noire[\/vc_custom_heading][vc_column_text]<\/p>\n<p class=\"p1\"><span class=\"s1\">L&rsquo;un des produits les plus pr\u00e9sents r\u00e9sultant de l&rsquo;interaction entre l&rsquo;atmosph\u00e8re actuelle et les mat\u00e9riaux de construction (interaction mortier-SO<\/span><span class=\"s2\"><sub>2<\/sub><\/span><span class=\"s1\">) est le pl\u00e2tre (CaSO<\/span><span class=\"s2\"><sub>4<\/sub><\/span><span class=\"s1\">\u00b72H<\/span><span class=\"s2\"><sub>2<\/sub><\/span><span class=\"s1\">O). La formation du pl\u00e2tre r\u00e9sulte de l&rsquo;oxydation\/hydratation du SO<\/span><span class=\"s2\"><sub>2<\/sub><\/span><span class=\"s1\"> en r\u00e9action \u00e0 l&rsquo;eau de pluie, ce qui donne lieu \u00e0 la formation d&rsquo;acide sulfurique qui r\u00e9agit ensuite avec le CaCO<\/span><span class=\"s2\"><sub>3<\/sub><\/span><span class=\"s1\"> du mortier. Cette r\u00e9action entra\u00eene la formation des cro\u00fbtes noires, principalement compos\u00e9es de pl\u00e2tre, de carbonate de calcium, et dans une moindre mesure, de particules de charbon et de m\u00e9taux lourds issus des d\u00e9p\u00f4ts atmosph\u00e9riques.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Les cro\u00fbtes noires pr\u00e9sentes dans les Galeries Punta Bego\u00f1a contiennent des d\u00e9p\u00f4ts de chlorure de sodium (sel commun) et des m\u00e9taux comme le mangan\u00e8se (Mn), le fer (Fe), le plomb (Pb), le titane (Ti) et le chrome (Cr) pi\u00e9g\u00e9s dans le mat\u00e9riau. Le chlorure de sodium a \u00e9t\u00e9 apport\u00e9 par l&rsquo;a\u00e9rosol marin, dont il est le composant principal, et les m\u00e9taux sont arriv\u00e9s sous la forme de d\u00e9p\u00f4ts de mati\u00e8re particulaire, provenant du trafic et de l&rsquo;industrie.<\/span><\/p>\n<p>[\/vc_column_text][vc_empty_space empty_h=\u00a0\u00bb1&Prime;][vc_single_image media=\u00a0\u00bb484&Prime; media_width_percent=\u00a0\u00bb100&Prime;][vc_column_text el_class=\u00a0\u00bbcaption\u00a0\u00bb]Cro\u00fbte noire retrouv\u00e9e sur le sol de la galerie nord-ouest, 2017. Source: projet de mise en valeur des Galeries Punta Bego\u00f1a[\/vc_column_text][vc_custom_heading]Pour en savoir plus sur cette question, rendez-vous aux points suivants:[\/vc_custom_heading][vc_raw_html]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[\/vc_raw_html][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=\u00a0\u00bb1\/1&Prime;][vc_custom_heading heading_semantic=\u00a0\u00bbh1&Prime; text_size=\u00a0\u00bbh1&Prime;]D.5 Apparition de cro\u00fbte noire[\/vc_custom_heading][vc_column_text] L&rsquo;un des produits les plus pr\u00e9sents r\u00e9sultant de l&rsquo;interaction entre l&rsquo;atmosph\u00e8re actuelle [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-rutad.php","meta":[],"_links":{"self":[{"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/pages\/1466"}],"collection":[{"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/comments?post=1466"}],"version-history":[{"count":1,"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/pages\/1466\/revisions"}],"predecessor-version":[{"id":1467,"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/pages\/1466\/revisions\/1467"}],"wp:attachment":[{"href":"https:\/\/puntabegonagaleriak.eus\/fr\/wp-json\/wp\/v2\/media?parent=1466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}