{"id":11553,"date":"2025-12-26T13:35:13","date_gmt":"2025-12-26T13:35:13","guid":{"rendered":"https:\/\/ykmtest.com\/?post_type=product&p=11553"},"modified":"2025-12-26T13:36:08","modified_gmt":"2025-12-26T13:36:08","slug":"length-change-of-restrained-expansion-of-mortar-and-concrete","status":"publish","type":"product","link":"https:\/\/ykmtest.com\/french\/produit\/length-change-of-restrained-expansion-of-mortar-and-concrete\/","title":{"rendered":"Changement de longueur de l'expansion restreinte du mortier et du b\u00e9ton"},"content":{"rendered":"

L'appareil Length Change of Restrained Expansion of Mortar and Concrete est un syst\u00e8me de laboratoire de pr\u00e9cision con\u00e7u pour \u00e9valuer les changements dimensionnels et l'expansion limit\u00e9e des m\u00e9langes de ciment, de mortier et de b\u00e9ton dans des conditions contr\u00f4l\u00e9es. Il permet une \u00e9valuation pr\u00e9cise des additifs cimentaires, des agents expansifs ou des m\u00e9langes qui influencent les changements volum\u00e9triques pendant la prise et le durcissement pr\u00e9coce.<\/p>\n

L'appareil utilise des moules en acier sp\u00e9cialement usin\u00e9s dans une configuration \u00e0 trois prismes. Chaque moule est \u00e9quip\u00e9 de tiges de retenue qui limitent l'expansion libre, cr\u00e9ant un environnement de d\u00e9formation axiale contr\u00f4l\u00e9e pour capturer de mani\u00e8re r\u00e9aliste le comportement des contraintes internes. Des plaques d'extr\u00e9mit\u00e9 lisses assurent une retenue uniforme sur toute la longueur de l'\u00e9chantillon, ce qui garantit une grande pr\u00e9cision des mesures et la stabilit\u00e9 du moule pendant les essais \u00e0 long terme.<\/p>\n

Le syst\u00e8me s'adapte aux prismes de mortier standard (50\u00d750\u00d7250 mm) et aux prismes de b\u00e9ton (80\u00d780\u00d7240 mm). Des comparateurs de longueur num\u00e9riques ou analogiques mesurent l'expansion avec une pr\u00e9cision de l'ordre du micron. Les points de contact des comparateurs sont compatibles avec les barres de r\u00e9f\u00e9rence standard, ce qui permet de d\u00e9tecter des diff\u00e9rences infimes dans les taux d'expansion entre les m\u00e9langes.<\/p>\n

Tous les composants sont con\u00e7us de mani\u00e8re ergonomique pour une utilisation r\u00e9p\u00e9t\u00e9e en laboratoire. Des attaches rapides permettent de nettoyer et d'assembler facilement les moules. Les accessoires optionnels comprennent des plaques d'extr\u00e9mit\u00e9 de rechange, des tiges de retenue, des barres de r\u00e9f\u00e9rence et des dispositifs de transport. L'appareil garantit une \u00e9valuation fiable, reproductible et conforme aux normes du comportement de l'expansion sous contrainte dans les mat\u00e9riaux cimentaires.<\/p>","protected":false},"excerpt":{"rendered":"

L'appareil de mesure des variations de longueur de l'expansion retenue mesure les variations dimensionnelles des m\u00e9langes de mortier et de b\u00e9ton ayant un potentiel d'expansion, en utilisant des moules de pr\u00e9cision, des tiges de retenue et des mesures de longueur de haute pr\u00e9cision pour obtenir des r\u00e9sultats de laboratoire fiables.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[142,158],"product_tag":[],"class_list":["post-11553","product","type-product","status-publish","product_cat-concrete","product_cat-length-changes","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"\nLength Change of Restrained Expansion of Mortar and Concrete - YKM TEST<\/title>\n<meta name=\"description\" content=\"Length Change of Restrained Expansion apparatus for measuring dimensional changes of mortar and concrete under restraint, using precision molds and high-accuracy length comparators.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ykmtest.com\/french\/prodotto\/length-change-of-restrained-expansion-of-mortar-and-concrete\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Length Change of Restrained Expansion of Mortar and Concrete - 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