{"id":13003,"date":"2025-09-20T08:00:05","date_gmt":"2025-09-20T08:00:05","guid":{"rendered":"https:\/\/tenessy.com\/?p=13003"},"modified":"2025-09-22T09:39:56","modified_gmt":"2025-09-22T09:39:56","slug":"flake-polycarboxylate-superplasticizer-pce-performance-introduction","status":"publish","type":"post","link":"https:\/\/tenessy.com\/fr\/introduction-de-la-performance-du-superplastifiant-polycarboxylate-en-flocons-pce\/","title":{"rendered":"Introduction \u00e0 la performance du superplastifiant polycarboxylate (PCE) en flocons"},"content":{"rendered":"
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\u2160.Introduction au produit<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Polycarboxylate\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Superplastifiant polycarboxylate en flocons (PCE)<\/u><\/a>\u00a0Il s'agit d'une nouvelle g\u00e9n\u00e9ration de flocons de superplastifiant \u00e0 base de polycarboxylate, respectueux de l'environnement et \u00e0 haute performance, mis au point par notre soci\u00e9t\u00e9. Il utilise l'\u00e9ther de polycarboxylate modifi\u00e9 comme mati\u00e8re premi\u00e8re principale.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Caract\u00e9ristiques de performance du PCE en flocons<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  1. Taux \u00e9lev\u00e9 de r\u00e9duction de l'eau : Il poss\u00e8de une excellente dispersibilit\u00e9 et le taux de r\u00e9duction de l'eau peut atteindre plus de 25% \u00e0 un dosage satur\u00e9. Certains produits, tels que l'agent r\u00e9ducteur d'eau haute performance FLT40 \u00e0 base d'acide polycarboxylique, peuvent m\u00eame atteindre un taux de r\u00e9duction d'eau sup\u00e9rieur \u00e0 34%, ce qui permet d'am\u00e9liorer efficacement les performances du b\u00e9ton, d'augmenter sa r\u00e9sistance et d'\u00e9conomiser du ciment.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    1. Bonne performance en mati\u00e8re de pr\u00e9servation de l'affaissement : Il a de bonnes capacit\u00e9s de r\u00e9duction de l'eau et de pr\u00e9servation de l'affaissement, peut am\u00e9liorer la coh\u00e9sion du b\u00e9ton, emp\u00eacher la s\u00e9gr\u00e9gation du b\u00e9ton, prolonger le temps de transport du b\u00e9ton et le temps de r\u00e9tention sur le site de construction, et assurer la performance de construction du b\u00e9ton pompable.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      1. Forte adaptabilit\u00e9 : Il pr\u00e9sente une excellente adaptabilit\u00e9 \u00e0 diff\u00e9rents ciments, qu'il s'agisse de divers ciments Portland, de ciment Portland ordinaire, de ciment Portland au laitier et de divers adjuvants, il peut exercer une bonne dispersibilit\u00e9 et une bonne performance de r\u00e9duction de l'eau.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \u00a0 \u00a0 \u00a04. l'effet de renforcement est significatif : le taux de croissance du b\u00e9ton, tout en am\u00e9liorant la performance de retrait, en r\u00e9duisant le taux de carbonisation du b\u00e9ton, et en aidant \u00e0 am\u00e9liorer la qualit\u00e9 globale du b\u00e9ton.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        \u2162. Domaine d'application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        1. B\u00e9ton pr\u00eat \u00e0 l'emploi : convient \u00e0 divers types de b\u00e9ton pr\u00eat \u00e0 l'emploi, en particulier mortier sp\u00e9cial m\u00e9lang\u00e9 \u00e0 sec<\/u><\/a>qui peut \u00eatre utilis\u00e9 pour l'auto-nivellement \u00e0 base de ciment, mat\u00e9riaux de jointoiement sans retrait<\/u><\/a>les agents de jointoiement,planchers autonivelants<\/u><\/a>, mortier imperm\u00e9able<\/u><\/a>,mortier de r\u00e9paration<\/u><\/a>, mortier projet\u00e9<\/u><\/a>le b\u00e9ton \u00e0 haute r\u00e9sistance m\u00e9lang\u00e9 \u00e0 sec, etc.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          1. Mortier sp\u00e9cial : sp\u00e9cialement utilis\u00e9 pour les mortiers secs sp\u00e9ciaux \u00e0 base de gypse et de ciment, qui peuvent r\u00e9pondre \u00e0 leurs exigences en mati\u00e8re de fluidit\u00e9, de r\u00e9tention d'eau et de r\u00e9sistance.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Param\u00e8tres d\u00e9taill\u00e9s<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            \u2164.Comment utiliser le PCE en paillettes ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            \u9879\u76eeProjet<\/b><\/strong><\/p><\/td>

            \u5355\u4f4dUnit\u00e9<\/b><\/strong><\/p><\/td>

            \u6807\u51c6Standard<\/b><\/strong><\/p><\/td><\/tr>

            Apparence<\/p><\/td>

            \/<\/p><\/td>

            Flocons blancs ou jaunes clairs<\/p><\/td><\/tr>

            Densit\u00e9 en vrac<\/p><\/td>

            Kg\/m\u00b3<\/p><\/td>

            500\u00b1 100<\/p><\/td><\/tr>

            Valeur du pH (23\u00b0C)<\/p><\/td>

            \/<\/p><\/td>

            6.0\u00b1 1.0<\/p><\/td><\/tr>

            Contenu disponible<\/p><\/td>

            %<\/p><\/td>

            97.0\u00b1 1.0<\/p><\/td><\/tr>

            Teneur en eau<\/p><\/td>

            %<\/p><\/td>

            \u2264 3.0<\/p><\/td><\/tr>

            Taux de r\u00e9duction de la consommation d'eau<\/p><\/td>

            %<\/p><\/td>

            \u2265 25<\/p><\/td><\/tr>

            Teneur en ions chlorure<\/p><\/td>

            %<\/p><\/td>

            \u2264 0.02<\/p><\/td><\/tr>

            Teneur en alcali<\/p><\/td>

            %<\/p><\/td>

            \u2264 0.3<\/p><\/td><\/tr><\/tbody><\/table>

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

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            L'utilisation de \u00a0flocon <\/u>PCE<\/u><\/a>\u00a0doit suivre les principes de \"mesure pr\u00e9cise, agitation adaptative et ajustement dynamique\". Les \u00e9tapes sp\u00e9cifiques sont les suivantes :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            1. D\u00e9terminer le dosage (pr\u00e9requis de base)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Plage de dosage : Le dosage recommand\u00e9 est de 1%-3% du mat\u00e9riau cimentaire total. Le dosage sp\u00e9cifique doit \u00eatre ajust\u00e9 en fonction de la classe de r\u00e9sistance du b\u00e9ton, du type de mat\u00e9riau cimentaire (par exemple, ciment ordinaire, poudre min\u00e9rale, cendres volantes), de l'environnement de construction (temp\u00e9rature, humidit\u00e9) et des exigences en mati\u00e8re d'affaissement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2.Dissolution et dilution (proc\u00e9dures sp\u00e9cifiques aux paillettes)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Flak<\/u>e PCE<\/u>\u00a0<\/u><\/a>doivent \u00eatre dissous dans un liquide avant d'\u00eatre ajout\u00e9s \u00e0 l'eau. b\u00e9ton<\/u><\/a>. Ne pas ajouter de paillettes solides directement au m\u00e9lange de b\u00e9ton. M\u00e9thode de dissolution : Ajouter lentement le r\u00e9ducteur d'eau en flocons \u00e0 de l'eau \u00e0 temp\u00e9rature ambiante dans un rapport de masse de 1:5-10 (la concentration peut \u00eatre ajust\u00e9e en fonction des ajouts ult\u00e9rieurs). Remuer \u00e0 vitesse constante \u00e0 l'aide d'un dispositif d'agitation (tel qu'un agitateur \u00e9lectrique) pendant 5 \u00e0 10 minutes jusqu'\u00e0 ce que les solides soient compl\u00e8tement dissous et forment un liquide uniforme, clair ou jaune p\u00e2le, exempt de s\u00e9diments.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            3. m\u00e9thode d'addition et m\u00e9lange<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Ordre d'ajout recommand\u00e9 : Utiliser soit la m\u00e9thode de post-addition, soit la m\u00e9thode d'addition simultan\u00e9e, la m\u00e9thode de post-addition \u00e9tant pr\u00e9f\u00e9rable (c'est-\u00e0-dire m\u00e9langer le sable, le ciment et l'eau pendant 30 secondes pour former un mortier, puis ajouter le r\u00e9ducteur d'eau dilu\u00e9 et continuer \u00e0 m\u00e9langer pendant 60 \u00e0 90 secondes). Cette m\u00e9thode permet d'augmenter le taux de r\u00e9duction de l'eau de 5%-10% et d'am\u00e9liorer la r\u00e9tention de l'affaissement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            4. Contr\u00f4le du processus de construction<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Surveillance de l'affaissement : Affaissement du b\u00e9ton<\/u><\/a>\u00a0doit \u00eatre test\u00e9 imm\u00e9diatement apr\u00e8s avoir quitt\u00e9 la pompe \u00e0 b\u00e9ton. S'il ne r\u00e9pond pas aux exigences de la construction (par exemple, l'affaissement requis pour le b\u00e9ton pomp\u00e9 est de 180 \u00b1 20 mm), une petite quantit\u00e9 de r\u00e9ducteur d'eau dilu\u00e9 peut \u00eatre ajout\u00e9e dans la fourchette sp\u00e9cifi\u00e9e (ne d\u00e9passant pas 20% du dosage original). Apr\u00e8s l'ajout, un m\u00e9lange rapide doit \u00eatre effectu\u00e9 pendant au moins 30 secondes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            \u2165. Pr\u00e9cautions d'emploi<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            1.Compatibilit\u00e9 des mat\u00e9riaux <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Compatibilit\u00e9 avec le ciment : Les diff\u00e9rentes marques et lots de ciment (par exemple, le ciment Portland, le ciment Portland ordinaire) peuvent varier en termes de composition min\u00e9rale (teneur en C3A et C3S) et de compatibilit\u00e9 avec le ciment. forme de gypse (gypse dihydrat\u00e9, anhydrite)<\/u><\/a>Les deux parties peuvent donc avoir des diff\u00e9rences dans la compatibilit\u00e9 des r\u00e9ducteurs d'eau.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2. conditions environnementales et de construction<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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            Effets de la temp\u00e9rature :<\/p>

            Temp\u00e9ratures \u00e9lev\u00e9es (\u226530\u00b0C) : La perte d'affaissement du b\u00e9ton s'acc\u00e9l\u00e8re, ce qui n\u00e9cessite une augmentation appropri\u00e9e du dosage en PCE (de 10%-20%) ou l'ajout d'un composant retardateur (tel que le gluconate de sodium). Les temps de transport et de mise en \u0153uvre doivent \u00e9galement \u00eatre raccourcis, et le m\u00e9lange de b\u00e9ton doit \u00eatre prot\u00e9g\u00e9 de la lumi\u00e8re directe du soleil.<\/p>

            Basses temp\u00e9ratures (\u22645\u00b0C) : Le PCE se dissout plus lentement, ce qui n\u00e9cessite un temps de m\u00e9lange plus long (jusqu'\u00e0 30 secondes de plus qu'\u00e0 temp\u00e9rature ambiante). Si la temp\u00e9rature est \u22640\u00b0C, l'eau de m\u00e9lange doit \u00eatre chauff\u00e9e (\u00e0 10-20\u00b0C) pour \u00e9viter que la solution de PCE ne g\u00e8le et ne devienne inefficace.<\/p>

            Exigences en mati\u00e8re de stockage :<\/p>

            Flocon <\/u>PCE<\/u><\/a>\u00a0doit \u00eatre stock\u00e9 dans un entrep\u00f4t sec, bien ventil\u00e9 et frais. \u00c9viter l'humidit\u00e9 (l'humidit\u00e9 peut provoquer un mottage et des difficult\u00e9s de dissolution) et la lumi\u00e8re directe du soleil (les temp\u00e9ratures \u00e9lev\u00e9es peuvent d\u00e9grader les performances).<\/p>

            Le PCE liquide dissous doit \u00eatre utilis\u00e9 dans les 24 heures. Toute portion non utilis\u00e9e doit \u00eatre scell\u00e9e et stock\u00e9e afin d'\u00e9viter une exposition prolong\u00e9e \u00e0 l'air, qui pourrait entra\u00eener une d\u00e9t\u00e9rioration.<\/p>

            Le PCE liquide dissous doit \u00eatre utilis\u00e9 dans les 24 heures. Toute portion non utilis\u00e9e doit \u00eatre scell\u00e9e et stock\u00e9e afin d'\u00e9viter une exposition prolong\u00e9e \u00e0 l'air, qui pourrait entra\u00eener une d\u00e9t\u00e9rioration.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            \u2166. Applications sp\u00e9ciales recommand\u00e9es :<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Les superplastifiants polycarboxylates lamellaires r\u00e9ducteurs d'eau PCE sont largement utilis\u00e9s dans les projets exigeant des performances de b\u00e9ton rigoureuses en raison de leur taux de r\u00e9duction d'eau tr\u00e8s \u00e9lev\u00e9 (25%-35%), de leur forte compatibilit\u00e9 avec divers mat\u00e9riaux cimentaires et environnements difficiles, et des avantages de leur forme solide (faibles co\u00fbts de transport et de stockage et longue dur\u00e9e de conservation). Ils sont particuli\u00e8rement bien adapt\u00e9s aux b\u00e9tons n\u00e9cessitant une r\u00e9sistance \u00e9lev\u00e9e, des performances \u00e9lev\u00e9es, une grande durabilit\u00e9 et des conditions de construction particuli\u00e8res. Les domaines d'application sp\u00e9cifiques sont les suivants :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            1. Projets de b\u00e9ton \u00e0 haute et ultra-haute r\u00e9sistance<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Ces projets n\u00e9cessitent d'augmenter la r\u00e9sistance en r\u00e9duisant le rapport eau-ciment (typiquement \u22640,30). Les flocons r\u00e9ducteurs d'eau PCE offrent la capacit\u00e9 pr\u00e9cise de r\u00e9duction de l'eau requise pour r\u00e9pondre pr\u00e9cis\u00e9ment \u00e0 ces exigences. Elles constituent un adjuvant essentiel pour la formulation des b\u00e9tons de classe de r\u00e9sistance C60 et plus. Les applications typiques comprennent :<\/p>

            Structures de b\u00e2timents de grande hauteur : Tubes de noyau, colonnes d'ossature, murs de cisaillement et autres \u00e9l\u00e9ments porteurs dans les immeubles de bureaux et les h\u00f4tels de grande hauteur.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2. Composants pr\u00e9fabriqu\u00e9s et b\u00e2timents pr\u00e9fabriqu\u00e9s<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Les b\u00e2timents pr\u00e9fabriqu\u00e9s imposent des exigences \u00e9lev\u00e9es en mati\u00e8re de pr\u00e9cision dimensionnelle, de qualit\u00e9 de surface et d'efficacit\u00e9 du d\u00e9moulage des \u00e9l\u00e9ments pr\u00e9fabriqu\u00e9s (tels que les panneaux composites pr\u00e9fabriqu\u00e9s, les poutres pr\u00e9fabriqu\u00e9es et les escaliers pr\u00e9fabriqu\u00e9s). Les produits en feuilles PCE \u00e0 r\u00e9duction d'eau, avec leur faible ressuage et leur grande uniformit\u00e9, offrent un ajustement pr\u00e9cis.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            3. Mortiers sp\u00e9ciaux et b\u00e9tons fonctionnels<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Les flocons r\u00e9ducteurs d'eau PCE peuvent \u00eatre dos\u00e9s et m\u00e9lang\u00e9s pour r\u00e9pondre aux exigences des mortiers sp\u00e9ciaux en mati\u00e8re de fluidit\u00e9, de r\u00e9tention d'eau et de r\u00e9sistance, ainsi qu'aux exigences de performance sp\u00e9cifiques des b\u00e9tons fonctionnels.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

            \n\t\t\t\t
            \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

            Introduction du produit Superplastifiant polycarboxylate en flocons (PCE) ,Il s'agit d'une nouvelle g\u00e9n\u00e9ration de superplastifiant polycarboxylate en flocons, respectueux de l'environnement et \u00e0 haute performance, mis au point par notre soci\u00e9t\u00e9. Il utilise l'\u00e9ther de polycarboxylate modifi\u00e9 comme mati\u00e8re premi\u00e8re principale. \u2161.Caract\u00e9ristiques de performance des flocons PCE Taux \u00e9lev\u00e9 de r\u00e9duction de l'eau : Il a une excellente dispersibilit\u00e9 et le taux de r\u00e9duction de l'eau peut atteindre plus de 25% \u00e0 un dosage satur\u00e9. [...]<\/p>","protected":false},"author":1,"featured_media":11524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-13003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"yoast_head":"\nFlake Polycarboxylate Superplasticizer (PCE) Performance Introduction - HPMC|HEMC|HEC|RDP Manufacturer-TENESSY<\/title>\n<meta name=\"description\" content=\"The manufacturer's latest product, flake polycarboxylate water reducer, is the preferred choice for high-strength concrete applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tenessy.com\/fr\/introduction-de-la-performance-du-superplastifiant-polycarboxylate-en-flocons-pce\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flake Polycarboxylate Superplasticizer (PCE) Performance Introduction - 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