{"id":7327,"date":"2026-07-14T11:13:34","date_gmt":"2026-07-14T08:13:34","guid":{"rendered":"http:\/\/mbaplant.com\/?p=7327"},"modified":"2026-07-14T14:46:26","modified_gmt":"2026-07-14T11:46:26","slug":"qu-est-ce-que-la-grave-non-traitee-gnt","status":"publish","type":"post","link":"https:\/\/mbaplant.com\/fr\/qu-est-ce-que-la-grave-non-traitee-gnt\/","title":{"rendered":"Qu’est-ce que la Grave Non Trait\u00e9e (GNT) ?"},"content":{"rendered":"\n
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Qu’est-ce que la Grave Non Trait\u00e9e (GNT) ?<\/h1><\/div><\/div><\/div>\n<\/div><\/header>\n\n\n\n
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La grave non trait\u00e9e (GNT)<\/strong>, \u00e9galement appel\u00e9e grave reconstitu\u00e9e humidifi\u00e9e (GRH) en centrale, est la couche de fondation structurelle la plus critique pos\u00e9e directement sous la couche de roulement en enrob\u00e9 pour augmenter la capacit\u00e9 portante de la chauss\u00e9e.

La GNT est pr\u00e9par\u00e9e en m\u00e9langeant des granulats propres d’au moins trois fractions (tailles) diff\u00e9rentes<\/strong> issus d’une station de concassage et de criblage avec de l’eau \u00e0 des proportions pr\u00e9cises sp\u00e9cifi\u00e9es dans la formule, le tout produit de mani\u00e8re homog\u00e8ne dans une centrale \u00e0 grave<\/a><\/strong> \u00e0 haute efficacit\u00e9.<\/p><\/div><\/div>\n\n\n\n

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Types de Graves de Centrale (GNT) et Applications R\u00e9gionales<\/h2><\/div>
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Selon les sp\u00e9cifications techniques du projet et les conditions g\u00e9ographiques, la grave de centrale peut \u00eatre modifi\u00e9e non seulement avec de l’eau, mais \u00e9galement avec diff\u00e9rents liants hydrauliques ou hydrocarbon\u00e9s :

GNT Standard :<\/strong> Le mat\u00e9riau de fondation routi\u00e8re classique obtenu en m\u00e9langeant des granulats calibr\u00e9s et de l’eau.

Grave Trait\u00e9e au Ciment ou \u00e0 l’\u00c9mulsion de Bitume :<\/strong> Du ciment ou de l’\u00e9mulsion de bitume est ajout\u00e9 au m\u00e9lange pour maximiser la r\u00e9sistance, la coh\u00e9sion et la flexibilit\u00e9 du mat\u00e9riau. Les applications de graves trait\u00e9es au ciment ou \u00e0 l’\u00e9mulsion sont tr\u00e8s courantes, en particulier dans les pays aux conditions hivernales rigoureuses comme la Russie, l’Ukraine, le Kazakhstan et l’Ouzb\u00e9kistan<\/strong>.<\/p><\/div><\/div>\n<\/div>\n<\/section>\n\n\n\n

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Importance et Application de la Couche de GNT dans la Construction Routi\u00e8re<\/h2><\/div>
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Avant d’appliquer l’enrob\u00e9 bitumineux chaud, il est d’une importance vitale de renforcer la couche de forme conform\u00e9ment aux normes d’ing\u00e9nierie. Si la stabilit\u00e9 du sol et la capacit\u00e9 portante sont insuffisantes, la chauss\u00e9e en enrob\u00e9 pos\u00e9e sur le dessus subira des fissures, des orni\u00e9rages et des affaissements structurels soudains<\/strong> \u00e0 court terme.<\/p><\/div><\/div>\n\n\n\n

Processus de Pose et de Compactage de la GNT<\/h3><\/div>
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Le m\u00e9lange homog\u00e8ne produit avec une automatisation compl\u00e8te dans la centrale \u00e0 grave est \u00e9tal\u00e9 avec pr\u00e9cision sur le chantier \u00e0 l’aide d’un r\u00e9partiteur de granulats (finisseur). Apr\u00e8s la pose, le compactage est effectu\u00e9 \u00e0 l’aide de compacteurs \u00e0 pneus et \u00e0 rouleaux vibrants pour garantir que le mat\u00e9riau atteigne sa densit\u00e9 maximale \u00e0 sa teneur en eau optimale.<\/p><\/div><\/div>\n\n\n\n

PMB Layer Thickness According to Traffic Density<\/h3><\/div>
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The thickness of the plant mix base layer to be laid on the roadbed varies depending on the daily heavy vehicle volume and traffic density of the project. According to international highway standards, this thickness is generally designed between 50 cm and 120 cm<\/strong>.<\/p><\/div><\/div>\n\n\n\n

\u00c9paisseur de la Couche de GNT selon l’Intensit\u00e9 du Trafic<\/h2><\/div>
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Pour obtenir des performances \u00e9lev\u00e9es et une durabilit\u00e9 \u00e0 long terme de la grave non trait\u00e9e, la qualit\u00e9 des granulats doit \u00eatre irr\u00e9prochable.

Avertissement Technique Critique :<\/strong> L’argile, le limon et les mat\u00e9riaux \u00e9trangers similaires ne doivent strictement pas \u00eatre pr\u00e9sents<\/strong> dans le m\u00e9lange de GNT. Les substances \u00e9trang\u00e8res \u00e0 grains fins emp\u00eachent les granulats de s’imbriquer (liaison) les uns dans les autres lors du compactage. Cela conduit \u00e0 un rel\u00e2chement de la structure de fondation, r\u00e9duisant consid\u00e9rablement l’efficacit\u00e9 globale et la capacit\u00e9 portante de la chauss\u00e9e.<\/p><\/div><\/div>\n<\/div>\n<\/section>\n\n\n\n

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Technologie de la Centrale \u00e0 Grave MBA (Stabilisation M\u00e9canique)<\/h2><\/div>
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La production d’un mat\u00e9riau de fondation trait\u00e9 en centrale (GNT) de haute qualit\u00e9, conforme aux sp\u00e9cifications du projet, d\u00e9pend directement de la qualit\u00e9 d’ing\u00e9nierie de la centrale de malaxage. Les centrales de malaxage MBA sont con\u00e7ues pour assurer une production continue \u00e0 haute capacit\u00e9, avec une excellente homog\u00e9n\u00e9it\u00e9 du m\u00e9lange et des performances fiables, m\u00eame dans les projets routiers et d’infrastructure les plus exigeants. <\/strong>
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Des Solutions de Centrales \u00e0 Grave Haute Capacit\u00e9 pour vos Projets Routiers !<\/h2><\/div>

Si vous souhaitez produire de la Grave Non Trait\u00e9e (GNT) ou de la grave trait\u00e9e au ciment ou \u00e0 l’\u00e9mulsion conforme aux normes routi\u00e8res internationales, obtenir des d\u00e9tails techniques ou un devis pour nos centrales \u00e0 grave MBA hautement efficaces, contactez imm\u00e9diatement notre \u00e9quipe d’experts.
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T\u00e9l\u00e9phone -whatsapp<\/p><\/div>

+90 546 726 06 06<\/a><\/p><\/div><\/div>\n<\/div>\n\n\n\n

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T\u00e9l\u00e9phone 2<\/p><\/div>

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