{"id":1221,"date":"2024-07-08T12:07:08","date_gmt":"2024-07-08T04:07:08","guid":{"rendered":"https:\/\/www.darko-tech.com\/?p=1221"},"modified":"2024-11-01T14:06:28","modified_gmt":"2024-11-01T06:06:28","slug":"solutions-de-qualite-pour-le-silo-a-ciment-pour-le-clinker","status":"publish","type":"post","link":"https:\/\/www.darko-tech.com\/fr\/la-resolution-des-problemes-de-qualite-dans-les-silos-a-ciment-pour-les-lignes-de-production-de-clinker\/","title":{"rendered":"Comment r\u00e9soudre le probl\u00e8me de qualit\u00e9 du silo \u00e0 ciment dans la ligne de production de clinker ?"},"content":{"rendered":"
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1\u3001Aper\u00e7u du projet<\/span><\/h2>

Les silo \u00e0 ciment<\/a> pour une ligne de production de clinker a \u00e9t\u00e9 mis en service en 2007. Il s'agit d'une structure circulaire en b\u00e9ton arm\u00e9 d'une hauteur de 61,81 m et d'un diam\u00e8tre int\u00e9rieur de 22,5 m. La paroi du silo a une \u00e9paisseur de 380 mm et est renforc\u00e9e par des barres d'acier non pr\u00e9contraintes. La r\u00e9sistance du b\u00e9ton est con\u00e7ue pour \u00eatre C30.<\/p>

Apr\u00e8s la mise en service du silo, les inspections ont r\u00e9v\u00e9l\u00e9 de multiples fissures verticales et circonf\u00e9rentielles sur sa surface ext\u00e9rieure. Ces fissures sont apparues principalement entre les \u00e9l\u00e9vations +14,166 m et +50 m. Certaines fissures avaient une largeur sup\u00e9rieure \u00e0 0,2 mm, ce qui est contraire aux sp\u00e9cifications. Les inspecteurs ont \u00e9galement constat\u00e9 des zones creuses et un d\u00e9collement du b\u00e9ton sur la paroi du silo. En cons\u00e9quence, le propri\u00e9taire a exig\u00e9 un renforcement technique de la paroi du silo. silo \u00e0 ciment<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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2. Analyse de la cause de l'accident<\/span><\/h2>

Apr\u00e8s avoir d\u00e9couvert les fissures, le propri\u00e9taire a demand\u00e9 \u00e0 un organisme d'essai d'\u00e9valuer la r\u00e9sistance du b\u00e9ton, l'armature et les fissures de la paroi du silo. Les tests ont montr\u00e9 que la r\u00e9sistance du b\u00e9ton \u00e9tait g\u00e9n\u00e9ralement conforme aux exigences de conception. Cependant, l'armature annulaire entre +14,166 m et +50,000 m n'\u00e9tait g\u00e9n\u00e9ralement pas conforme aux sp\u00e9cifications. La largeur des fissures entre +23,5 m et +34,2 m n'\u00e9tait pas non plus conforme aux exigences.<\/p>

L'inspection a r\u00e9v\u00e9l\u00e9 que les fissures verticales r\u00e9sultaient des effets de la contrainte et de la temp\u00e9rature sur le mur. Des fissures circonf\u00e9rentielles se sont produites en raison d'un renforcement insuffisant et de mauvaises connexions entre les joints. L'\u00e9quipe a construit le silo d'homog\u00e9n\u00e9isation des mati\u00e8res premi\u00e8res en utilisant un proc\u00e9d\u00e9 de coffrage glissant. Cette m\u00e9thode a permis de cr\u00e9er des joints d'armature horizontaux li\u00e9s et superpos\u00e9s, sans utiliser de connexions soud\u00e9es. La couche de protection autour de l'armature \u00e9tait trop mince, ce qui a affaibli la liaison entre l'armature et le b\u00e9ton. La couche protectrice autour de l'armature \u00e9tait trop fine, ce qui a affaibli la liaison entre l'armature et le b\u00e9ton.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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3. Traitement du renforcement\uff08S\u00e9lection du r\u00e9gime\uff09<\/span><\/h2>

Nous avons envisag\u00e9 deux solutions pour renforcer le silo d'homog\u00e9n\u00e9isation des mati\u00e8res premi\u00e8res. La premi\u00e8re solution consiste \u00e0 renforcer la paroi ext\u00e9rieure avec du b\u00e9ton. L'autre solution consiste \u00e0 appliquer une pr\u00e9contrainte externe. Vous trouverez ci-dessous une comparaison des deux m\u00e9thodes.<\/p>

\u00a0<\/p>

3.1.1 Utiliser du b\u00e9ton arm\u00e9 pour augmenter la section transversale de la paroi du cylindre<\/span><\/h3>

Cette m\u00e9thode consiste \u00e0 ajouter 200 mm de b\u00e9ton arm\u00e9 pour augmenter la section transversale de la paroi du cylindre \u00e0 partir du soubassement jusqu'\u00e0 +50 m. Cette solution n\u00e9cessiterait la construction d'un moule invers\u00e9 et prendrait environ six mois. \u00c9tant donn\u00e9 que le silo fonctionne pendant ce temps, la longue p\u00e9riode de construction est un inconv\u00e9nient. En outre, la nouvelle structure pourrait ne pas s'int\u00e9grer compl\u00e8tement aux barres d'acier existantes, ce qui r\u00e9duirait l'efficacit\u00e9 des mat\u00e9riaux. Le co\u00fbt de cette m\u00e9thode est estim\u00e9 \u00e0 environ 2 millions de yuans, ce qui la rend moins favorable en termes d'efficacit\u00e9 et de co\u00fbt.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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3.1.2 Armature de pr\u00e9contrainte externe<\/span><\/h3>

Les fissures sont principalement dues \u00e0 un renforcement circonf\u00e9rentiel inad\u00e9quat et \u00e0 des contraintes de temp\u00e9rature. Nous pouvons placer des torons d'acier le long de la surface ext\u00e9rieure dans la direction circonf\u00e9rentielle. L'application d'une pr\u00e9contrainte externe aidera le renforcement circonf\u00e9rentiel interne et les torons externes \u00e0 travailler ensemble.<\/p>

Le silo \u00e9tant actuellement utilis\u00e9, cette m\u00e9thode permet de renforcer efficacement la structure et, \u00e9ventuellement, de colmater certaines fissures. Le co\u00fbt de ce projet est estim\u00e9 \u00e0 environ 1 million de yuans.<\/p>

\u00a0<\/p>

Conclusion<\/span><\/h3>

Compte tenu de l'efficacit\u00e9 du renforcement, du co\u00fbt et des conditions du site, nous avons d\u00e9termin\u00e9 que la m\u00e9thode de pr\u00e9contrainte externe est la solution la plus raisonnable et la plus \u00e9conomique pour ce silo.<\/p>

\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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1\u3001Project Overview The cement silo for a clinker production line began operation in 2007. It features a reinforced concrete circular structure with a height of 61.81 m and an inner diameter of 22.5 m. The silo wall is 380 mm thick and reinforced with non-prestressed steel bars. The concrete strength is designed to be C30. […]<\/p>\n","protected":false},"author":1,"featured_media":2482,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[109],"class_list":["post-1221","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-cement-silo-efficient-storage"],"acf":[],"yoast_head":"\nHow to solve the quality problem of cement silo in cement clinker production line | DARKO<\/title>\n<meta name=\"description\" content=\"After the cement silo cracks, the most reasonable and economical method is to use external prestressing to reinforce the cylinder.\" \/>\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.darko-tech.com\/fr\/la-resolution-des-problemes-de-qualite-dans-les-silos-a-ciment-pour-les-lignes-de-production-de-clinker\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to solve the quality problem of cement silo in cement clinker production line\" \/>\n<meta property=\"og:description\" content=\"After the cement silo cracks, the most reasonable and economical method is to use external prestressing to reinforce the cylinder.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.darko-tech.com\/fr\/la-resolution-des-problemes-de-qualite-dans-les-silos-a-ciment-pour-les-lignes-de-production-de-clinker\/\" \/>\n<meta property=\"og:site_name\" content=\"DARKO\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-08T04:07:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-01T06:06:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.darko-tech.com\/wp-content\/uploads\/2024\/09\/cement-silo.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1480\" 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