{"id":2107,"date":"2017-04-01T11:51:34","date_gmt":"2017-04-01T09:51:34","guid":{"rendered":"https:\/\/www.pro-seal.it\/feuilles-de-bentonite-de-sodium\/sodium-bentonite-powder\/"},"modified":"2024-03-12T08:43:49","modified_gmt":"2024-03-12T07:43:49","slug":"poudre-de-bentonite-sodique","status":"publish","type":"page","link":"https:\/\/www.pro-seal.fr\/feuilles-de-bentonite-de-sodium\/poudre-de-bentonite-sodique\/","title":{"rendered":"Poudre de bentonite sodique"},"content":{"rendered":"<p>[vc_row row_type=&#8221;row_full_center_content&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_column_text]La <strong>BENTONITE DE SODIUM<\/strong>, un min\u00e9ral argileux de la famille des &#8220;phyllosilicates&#8221;, compos\u00e9e en grande partie de montmorillonite, de calcium et de sodium, est un produit de d\u00e9composition des cendres volcaniques caract\u00e9ris\u00e9 par une structure cristalline &#8220;lamellaire&#8221; particuli\u00e8re d\u00e9finie par une particule \u00e9l\u00e9mentaire de montmorillonite. Chaque plaque a une distribution uniforme de charges n\u00e9gatives sur la surface externe. Les plaques sont regroup\u00e9es en paquets gr\u00e2ce \u00e0 l&#8217;action \u00e9lectrostatique qui se produit entre les cations (Na +, Ca ++, K +, H +) qui peuvent \u00eatre interpos\u00e9s entre les plaques et la distribution de charges n\u00e9gatives sur la surface des plaques elles-m\u00eames. La pr\u00e9valence d&#8217;un cation par rapport aux autres d\u00e9termine les caract\u00e9ristiques de la bentonite. Dans la bentonite de calcium, les cations pr\u00e9valents sont de type Ca ++, dans la bentonite de sodium les cations pr\u00e9valents sont de type Na +, dans la bentonite acide, les cations H + pr\u00e9valent. La bentonite de sodium est particuli\u00e8rement importante dans les constructions en raison de sa caract\u00e9ristique active permanente d&#8217;absorber l&#8217;eau, en s&#8217;expandant jusqu&#8217;\u00e0 12-16 fois par rapport \u00e0 son volume anhydre, ce qui la rend id\u00e9ale pour la production de feuilles, panneaux, rouleaux et profils auto-scellants, pour l&#8217;\u00e9tanch\u00e9it\u00e9 des murs contre le sol.<br \/>\n<strong>CLAYGRAIN<\/strong> repr\u00e9sente l&#8217;accessoire fonctionnel et polyvalent. M\u00e9lang\u00e9 avec du sable et de l&#8217;eau ou seulement avec de l&#8217;eau, il peut \u00eatre utilis\u00e9 sous forme de mortier colle, pour sceller tout point faible dans la structure en b\u00e9ton, avant le remblayage avec du sable.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_single_image image=&#8221;478&#8243; img_size=&#8221;large&#8221;][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row row_type=&#8221;row_full_center_content&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_column_text]La BENTONITE DE SODIUM, un min\u00e9ral argileux de la famille des &#8220;phyllosilicates&#8221;, compos\u00e9e en grande partie de montmorillonite, de &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1906,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"prodotti2_2.php","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Poudre de bentonite sodique - 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