{"id":6979,"date":"2019-08-23T10:05:49","date_gmt":"2019-08-23T02:05:49","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=solutions&p=6979"},"modified":"2019-09-25T15:31:11","modified_gmt":"2019-09-25T07:31:11","slug":"traitement-du-chert","status":"publish","type":"solutions","link":"https:\/\/www.jxscmachine.com\/fr\/solutions\/chert-processing\/","title":{"rendered":"Chert"},"content":{"rendered":"
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\"Chert\"<\/div>\n\t\t<\/figure>\n\t<\/div>\n
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Type<\/strong>
\nLe rocher<\/p>\n

Classification des min\u00e9raux<\/strong>
\nRoche s\u00e9dimentaire<\/p>\n

Duret\u00e9 Mohs<\/strong>
\n7<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>

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Description<\/h2><\/div><\/div>\n\t
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Le chert, \u00e9galement appel\u00e9 silex, est une roche s\u00e9dimentaire riche en silice. Le chert est tr\u00e8s dur et ses fractures concho\u00efdales peuvent laisser des ar\u00eates vives qui ne s'\u00e9moussent pas facilement. C'est pourquoi il a \u00e9t\u00e9 l'un des premiers mat\u00e9riaux utilis\u00e9s pour la fabrication d'outils et d'armes.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

<\/div>

Utilisations<\/h2><\/div><\/div>\n\t
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Dans certaines r\u00e9gions, le chert est omnipr\u00e9sent sous forme de gravier de ruisseau et de pierre des champs et est actuellement utilis\u00e9 comme mat\u00e9riau de construction et de rev\u00eatement routier. La popularit\u00e9 du chert pour le rev\u00eatement des routes ou la construction d'all\u00e9es s'explique en partie par le fait que la pluie a tendance \u00e0 raffermir et \u00e0 compacter le chert, alors que d'autres mat\u00e9riaux de remblai deviennent souvent boueux lorsqu'ils sont mouill\u00e9s.<\/p>\n

Les cherts sont sujets \u00e0 des probl\u00e8mes lorsqu'ils sont utilis\u00e9s comme agr\u00e9gats pour le b\u00e9ton. Le chert profond\u00e9ment alt\u00e9r\u00e9 d\u00e9veloppe des \u00e9clatements en surface lorsqu'il est utilis\u00e9 dans du b\u00e9ton soumis au gel et au d\u00e9gel, en raison de sa grande porosit\u00e9. L'autre probl\u00e8me est que certains silex subissent une r\u00e9action alcali-silice avec le ciment \u00e0 forte teneur en alcali. Cette r\u00e9action entra\u00eene la fissuration et l'expansion du b\u00e9ton et, en fin de compte, la rupture du mat\u00e9riau.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Affaires connexes<\/h2><\/div><\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Type de roche Classification min\u00e9rale Roche s\u00e9dimentaire Duret\u00e9 Mohs 7 Description Le chert, \u00e9galement connu sous le nom de silex, est une roche s\u00e9dimentaire riche en silice. Le chert est tr\u00e8s dur et ses fractures concho\u00efdales peuvent laisser des ar\u00eates vives qui ne s'\u00e9moussent pas facilement. C'est pourquoi il a \u00e9t\u00e9 l'un des premiers mat\u00e9riaux utilis\u00e9s pour la fabrication d'outils et d'armes. Utilisations Dans certains ... Continuer la lecture de Chert<\/span><\/a>","protected":false},"author":1,"featured_media":6980,"parent":0,"menu_order":53,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-6979","solutions","type-solutions","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nChert Processing | Equipment, Process Flow, Cases - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Chert processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jxscmachine.com\/fr\/solutions\/traitement-du-chert\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chert Processing | Equipment, Process Flow, Cases - 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