{"id":14465,"date":"2026-05-06T07:59:42","date_gmt":"2026-05-06T07:59:42","guid":{"rendered":"https:\/\/tenessy.com\/?p=14465"},"modified":"2026-05-11T01:59:00","modified_gmt":"2026-05-11T01:59:00","slug":"how-to-choose-the-right-hpmc-grade-for-your-drymix-mortar-formulations","status":"publish","type":"post","link":"https:\/\/tenessy.com\/fr\/comment-choisir-la-bonne-qualite-de-hpmc-pour-vos-formulations-de-mortier-sec\/","title":{"rendered":"Comment choisir la bonne qualit\u00e9 de HPMC pour vos formulations de mortier Drymix ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14465\" class=\"elementor elementor-14465\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdbc6e4 e-flex e-con-boxed e-con e-parent\" data-id=\"fdbc6e4\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20af60d elementor-widget elementor-widget-image\" data-id=\"20af60d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"491\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/drymix-mortar.jpg\" class=\"attachment-large size-large wp-image-14472\" alt=\"drymix-mortar\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/drymix-mortar.jpg 1000w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/drymix-mortar-300x184.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/drymix-mortar-768x472.jpg 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/drymix-mortar-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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<div class=\"elementor-element elementor-element-5ae54ec elementor-widget elementor-widget-text-editor\" data-id=\"5ae54ec\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Dans le domaine de la fabrication de mortiers pr\u00eats \u00e0 l'emploi, de l\u00e9g\u00e8res diff\u00e9rences au niveau des mati\u00e8res premi\u00e8res peuvent entra\u00eener des variations importantes dans les performances du produit final. Parmi tous les additifs,\u00a0<a href=\"https:\/\/tenessy.com\/products\/hpmc-hydroxypropyl-methyl-cellulose\/\"><strong>Hydroxypropylm\u00e9thylcellulose (HPMC)<\/strong><\/a>\u00a0se distingue comme l'un des ingr\u00e9dients fonctionnels les plus essentiels. Il influe directement sur la r\u00e9tention d'eau, la maniabilit\u00e9, la r\u00e9sistance \u00e0 l'affaissement, le temps ouvert et la force d'adh\u00e9rence.<\/p><p class=\"ds-markdown-paragraph\">Cependant, le choix du\u00a0<strong>la bonne qualit\u00e9 d'HPMC<\/strong>\u00a0Le choix de la formulation sp\u00e9cifique de votre mortier pr\u00eat \u00e0 l'emploi ne peut pas se faire de mani\u00e8re standardis\u00e9e. Avec des dizaines d'options de viscosit\u00e9, de types de substitution et de degr\u00e9s de modification disponibles,\u00a0<strong>Comment faire le bon choix ?<\/strong><\/p><p class=\"ds-markdown-paragraph\">Ce guide, qui s'appuie sur plus de 15 ans d'exp\u00e9rience de TENESSY dans le domaine de <a href=\"https:\/\/tenessy.com\/products\/cellulose-ether\/\">\u00e9ther de cellulose<\/a> un accompagnement en mati\u00e8re d'approvisionnement et de formulation du mortier \u2014 vous aidera \u00e0 comprendre les param\u00e8tres cl\u00e9s et \u00e0 prendre une d\u00e9cision \u00e9clair\u00e9e, adapt\u00e9e \u00e0 votre application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbece77 elementor-widget elementor-widget-heading\" data-id=\"bbece77\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">I.  Pourquoi le choix de la qualit\u00e9 de l'HPMC est-il important dans les mortiers pr\u00eats \u00e0 l'emploi ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d6e955 elementor-widget elementor-widget-image\" data-id=\"1d6e955\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-1024x683.webp\" class=\"attachment-large size-large wp-image-14470\" alt=\"Poudre d&#039;hydroxypropylm\u00e9thylcellulose\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-1024x683.webp 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-300x200.webp 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-768x512.webp 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-1536x1024.webp 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-2048x1365.webp 2048w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/05\/Hydroxypropyl-Methyl-Cellulose-powder-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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<div class=\"elementor-element elementor-element-d7524a3 elementor-widget elementor-widget-text-editor\" data-id=\"d7524a3\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">L'HPMC n'est pas simplement un \u00e9paississant. Dans le mortier pr\u00eat \u00e0 l'emploi, il remplit trois fonctions principales :<\/p><ol start=\"1\"><li><p class=\"ds-markdown-paragraph\"><strong>R\u00e9tention d'eau<\/strong>\u00a0\u2013 Emp\u00eache l'eau de s'infiltrer trop rapidement dans le substrat, garantissant ainsi une bonne hydratation du ciment.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Am\u00e9lioration de la maniabilit\u00e9<\/strong>\u00a0\u2013 Offre des propri\u00e9t\u00e9s de m\u00e9lange et d'application fluides et non collantes.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Prolongation de la p\u00e9riode d'ouverture<\/strong>\u00a0\u2013 Laisse suffisamment de temps pour positionner les carreaux ou niveler la surface avant que le mortier ne commence \u00e0 prendre.<\/p><\/li><\/ol><p class=\"ds-markdown-paragraph\">Si vous choisissez l'option\u00a0<strong>qualit\u00e9 de HPMC incorrecte<\/strong>, vous pourriez \u00eatre confront\u00e9 \u00e0 :<\/p><ul><li><p class=\"ds-markdown-paragraph\">Affaissement ou glissement dans les applications \u00e0 couche \u00e9paisse<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Temps ouvert court pour les colles \u00e0 carrelage<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Faible r\u00e9sistance d'adh\u00e9rence<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Mortier collant ou qui semble lourd<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Prise irr\u00e9guli\u00e8re et fissuration<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\">Ainsi, comprendre les sp\u00e9cifications de l'HPMC n'est pas un luxe, c'est une\u00a0<strong>n\u00e9cessit\u00e9<\/strong>\u00a0pour les fabricants de mortier \u00e0 la recherche d'une qualit\u00e9 constante et d'un avantage concurrentiel.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c8fd91 elementor-widget elementor-widget-heading\" data-id=\"0c8fd91\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">II.  Param\u00e8tres cl\u00e9s pour le choix de l'HPMC dans les mortiers pr\u00eats \u00e0 l'emploi<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad5ddaa elementor-widget elementor-widget-text-editor\" data-id=\"ad5ddaa\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Lors de l'\u00e9valuation des diff\u00e9rentes qualit\u00e9s d'HPMC destin\u00e9es aux mortiers pr\u00eats \u00e0 l'emploi, il convient de se concentrer sur les cinq param\u00e8tres techniques suivants :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a0d139 elementor-widget elementor-widget-heading\" data-id=\"4a0d139\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Viscosit\u00e9 (mPa\u00b7s, solution 2%, 20 \u00b0C)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7729ed elementor-widget elementor-widget-text-editor\" data-id=\"c7729ed\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">La viscosit\u00e9 est la propri\u00e9t\u00e9 dont on parle le plus souvent, mais c'est aussi celle qui est la plus mal comprise.<\/p><p class=\"ds-markdown-paragraph\"><strong>Faible viscosit\u00e9 (par exemple, 400 \u00e0 2 000 mPa\u00b7s) :<\/strong><\/p><ul><li><p class=\"ds-markdown-paragraph\">Convient pour <a href=\"https:\/\/tenessy.com\/applications\/application-self-leveling\/\">mortiers autonivelants<\/a> et les syst\u00e8mes \u00e0 tr\u00e8s grande fluidit\u00e9<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Permet une r\u00e9tention d'eau mod\u00e9r\u00e9e sans \u00e9paississement excessif<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Permet une \u00e9vacuation rapide de l'air et un bon d\u00e9bit<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Viscosit\u00e9 moyenne (par exemple, 10 000 \u00e0 40 000 mPa\u00b7s) :<\/strong><\/p><ul><li><p class=\"ds-markdown-paragraph\">Id\u00e9al pour les couches minces en g\u00e9n\u00e9ral <a href=\"https:\/\/tenessy.com\/applications\/tile-adhesive\/hpmc-for-tile-adhesive\/\">colles \u00e0 carreaux<\/a>, <a href=\"https:\/\/tenessy.com\/applications\/painting-coatings-solutions\/\">couches de lissage<\/a>, et les mortiers de pl\u00e2tre<\/p><\/li><li><p class=\"ds-markdown-paragraph\">R\u00e9tention d'eau et maniabilit\u00e9 \u00e9quilibr\u00e9es<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Plage la plus couramment utilis\u00e9e dans les formulations de m\u00e9langes secs<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Haute viscosit\u00e9 (par exemple, 60 000 \u00e0 100 000+ mPa\u00b7s) :<\/strong><\/p><ul><li><p class=\"ds-markdown-paragraph\">Con\u00e7u pour les mortiers \u00e0 couche \u00e9paisse, <a href=\"https:\/\/tenessy.com\/applications\/eifs-etics-exterior-insulation-and-finish-systems\/\">SIFE<\/a> colles et enduits textur\u00e9s<\/p><\/li><li><p class=\"ds-markdown-paragraph\">R\u00e9tention d'eau maximale et r\u00e9sistance \u00e0 l'affaissement<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Il faut bien m\u00e9langer pour \u00e9viter la formation de grumeaux.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Astuce TENESSY :<\/strong>\u00a0Ne vous fiez jamais uniquement \u00e0 la viscosit\u00e9. Une viscosit\u00e9 de 75 000 mPa\u00b7s propos\u00e9e par un fabricant peut pr\u00e9senter un comportement diff\u00e9rent de celle d\u2019un autre. Effectuez toujours des essais dans votre formulation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0506129 elementor-widget elementor-widget-heading\" data-id=\"0506129\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Degr\u00e9 de substitution (DS) et teneur en groupes hydroxypropoxy (HP)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4bdde9 elementor-widget elementor-widget-text-editor\" data-id=\"a4bdde9\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"><p class=\"ds-markdown-paragraph\">L'HPMC se caract\u00e9rise par\u00a0<strong>m\u00e9thoxy (\u2013OCH\u2083)<\/strong>\u00a0et\u00a0<strong>hydroxypropoxy (\u2013OCH\u2082CH(OH)CH\u2083)<\/strong>\u00a0substitution.<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Teneur en m\u00e9thoxy plus \u00e9lev\u00e9e<\/strong>\u00a0\u2192 une hydratation plus rapide et une augmentation plus rapide de la viscosit\u00e9<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Teneur plus \u00e9lev\u00e9e en hydroxypropoxy<\/strong>\u00a0\u2192 une meilleure solubilit\u00e9 dans l'eau et une meilleure r\u00e9sistance \u00e0 la g\u00e9lification thermique<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\">Pour les mortiers pr\u00eats \u00e0 l'emploi utilis\u00e9s dans des climats chauds ou dans des syst\u00e8mes \u00e0 forte teneur en ciment, un HPMC avec\u00a0<strong>modification \u00e0 teneur plus \u00e9lev\u00e9e en hydroxypropyle<\/strong>\u00a0est pr\u00e9f\u00e9rable. Elle emp\u00eache la perte de viscosit\u00e9 \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es (g\u00e9lification thermique), garantissant ainsi des performances constantes, m\u00eame sur des supports chauds.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-00775b3 elementor-widget elementor-widget-heading\" data-id=\"00775b3\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Taux de r\u00e9tention d'eau (%)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77e4b92 elementor-widget elementor-widget-text-editor\" data-id=\"77e4b92\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">La r\u00e9tention d'eau a une incidence directe sur l'hydratation du ciment et la r\u00e9sistance finale de l'adh\u00e9rence.<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Niveaux standard :<\/strong>\u00a085\u201392% : r\u00e9tention d'eau (adapt\u00e9 \u00e0 une utilisation en int\u00e9rieur, dans des conditions mod\u00e9r\u00e9es)<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Niveaux \u00e0 fort taux de r\u00e9tention :<\/strong>\u00a093\u201398% (indispensable pour <a href=\"https:\/\/tenessy.com\/applications\/gypsum-based-plaster\/\">mortiers \u00e0 base de gypse<\/a>, les environnements \u00e0 haute temp\u00e9rature ou les supports tr\u00e8s absorbants comme le b\u00e9ton cellulaire)<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\">Les mortiers pr\u00eats \u00e0 l'emploi \u00e0 base de gypse n\u00e9cessitent\u00a0<strong>une capacit\u00e9 de r\u00e9tention d'eau particuli\u00e8rement \u00e9lev\u00e9e<\/strong>\u00a0car le gypse s'hydrate rapidement et perd de sa mall\u00e9abilit\u00e9 si l'on retire l'eau trop vite.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb7b433 elementor-widget elementor-widget-heading\" data-id=\"cb7b433\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Temp\u00e9rature du gel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c05709 elementor-widget elementor-widget-text-editor\" data-id=\"9c05709\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">La plupart des grades d'HPMC pr\u00e9sentent un point de g\u00e9lification compris entre 55 \u00b0C et 75 \u00b0C. Lorsque la temp\u00e9rature du mortier d\u00e9passe ce seuil, l'HPMC pr\u00e9cipite hors de la solution, entra\u00eenant une perte soudaine de la r\u00e9tention d'eau et de la maniabilit\u00e9.<\/p><ul><li><p class=\"ds-markdown-paragraph\">Pour les applications standard,\u00a0<strong>Temp\u00e9rature du gel : 60 \u00e0 65 \u00b0C<\/strong>\u00a0cela suffit.<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Dans les climats chauds ou pour les applications en couche mince sur des carreaux ou des supports chauff\u00e9s par le soleil (la temp\u00e9rature peut atteindre 40 \u00e0 50 \u00b0C, sans compter la temp\u00e9rature du mortier), choisissez\u00a0<strong>HPMC \u00e0 haute temp\u00e9rature de g\u00e9lification (\u2265 70 \u00b0C)<\/strong>.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40b0bff elementor-widget elementor-widget-heading\" data-id=\"40b0bff\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Taille des particules et vitesse de dispersion<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e92cbcd elementor-widget elementor-widget-text-editor\" data-id=\"e92cbcd\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">L'HPMC ajout\u00e9 au mortier pr\u00eat \u00e0 l'emploi doit se disperser rapidement sans former d'agglom\u00e9rats.<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Nuances \u00e0 traitement de surface (dissolution retard\u00e9e)<\/strong>\u00a0Bien m\u00e9langer dans les syst\u00e8mes \u00e0 base de ciment, en veillant \u00e0 \u00e9viter la formation de \u00ab yeux de poisson \u00bb (particules de gel non dissoutes).<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Taille des particules<\/strong>\u00a0doit \u00eatre &gt;98% passant au tamis de 100 mesh (150 \u00b5m) pour garantir une r\u00e9partition homog\u00e8ne.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\">Pour les usines de mortier pr\u00eat \u00e0 l'emploi \u00e0 grande \u00e9chelle \u00e9quip\u00e9es de malaxeurs en continu, l'utilisation de grades d'HPMC \u00e0 dispersion rapide est essentielle pour \u00e9viter l'apparition de zones inhomog\u00e8nes dans le produit final.<\/p>\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<div class=\"elementor-element elementor-element-9b2cd0b e-flex e-con-boxed e-con e-parent\" data-id=\"9b2cd0b\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47b4288 elementor-widget elementor-widget-heading\" data-id=\"47b4288\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">III. Guide de s\u00e9lection de l'HPMC en fonction du type de mortier<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdbd11f elementor-widget elementor-widget-text-editor\" data-id=\"bdbd11f\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Le tableau pratique ci-dessous r\u00e9sume les param\u00e8tres recommand\u00e9s par TENESSY pour l'HPMC dans les formulations courantes de mortier pr\u00eat \u00e0 l'emploi.<\/p><div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"><table><thead><tr><th><strong>Type de mortier<\/strong><\/th><th><strong>Viscosit\u00e9 recommand\u00e9e (mPa\u00b7s)<\/strong><\/th><th><strong>R\u00e9tention de l'eau<\/strong><\/th><th><strong>Points cl\u00e9s \u00e0 prendre en compte<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Colle \u00e0 carrelage \u00e0 base de ciment (C1\/C2)<\/td><td>15 000 \u2013 40 000<\/td><td>\u226594%<\/td><td>Temps ouvert \u2265 20 min ; traitement anti-affaissement pour les grands carreaux<\/td><\/tr><tr><td>Enduit ext\u00e9rieur (\u00e0 base de ciment)<\/td><td>40 000 \u2013 75 000<\/td><td>\u226594%<\/td><td>R\u00e9sistance \u00e0 la fissuration ; bonne adh\u00e9rence sur le b\u00e9ton<\/td><\/tr><tr><td>Enduit de pl\u00e2tre \/ mastic pour joints<\/td><td>20 000 \u2013 40 000<\/td><td>\u226596%<\/td><td>Haute r\u00e9tention ; emp\u00eache la prise pr\u00e9matur\u00e9e<\/td><\/tr><tr><td>Mortier autonivelant (ciment)<\/td><td>400 \u2013 1 500<\/td><td>Mod\u00e9r\u00e9<\/td><td>Faible viscosit\u00e9 ; \u00e9vacuation rapide de l'air<\/td><\/tr><tr><td>Colle pour syst\u00e8me d'isolation thermique par l'ext\u00e9rieur (EIFS)<\/td><td>60 000 \u2013 100 000<\/td><td>\u226596%<\/td><td>R\u00e9tention d'eau \u00e9lev\u00e9e + viscosit\u00e9 \u00e9lev\u00e9e<\/td><\/tr><tr><td>Enduit de ragr\u00e9age \/ mastic (sous forme de poudre)<\/td><td>35 000 \u2013 50 000<\/td><td>Mod\u00e9r\u00e9 \u00e0 \u00e9lev\u00e9<\/td><td>Finition lisse ; facile \u00e0 poncer<\/td><\/tr><tr><td>Mortier de r\u00e9paration (couche \u00e9paisse)<\/td><td>50 000 \u2013 75 000<\/td><td>Haut<\/td><td>Anti-affaissement ; bonne thixotropie<\/td><\/tr><\/tbody><\/table><\/div><p class=\"ds-markdown-paragraph\"><em>Remarque : ces valeurs sont donn\u00e9es \u00e0 titre indicatif. Le choix d\u00e9finitif doit \u00eatre confirm\u00e9 par des essais en laboratoire r\u00e9alis\u00e9s avec vos mati\u00e8res premi\u00e8res locales.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83ea234 elementor-widget elementor-widget-heading\" data-id=\"83ea234\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">IV. Erreurs courantes \u00e0 \u00e9viter lors du choix de l'HPMC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3712386 elementor-widget elementor-widget-text-editor\" data-id=\"3712386\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\">\n<p class=\"ds-markdown-paragraph\">Au fil des ans, l'\u00e9quipe technique de TENESSY a constat\u00e9 plusieurs erreurs r\u00e9currentes :<\/p>\n\n<h3 style=\"font-size: 20px\">\u274c Erreur n\u00b0 1 : choisir la viscosit\u00e9 la plus \u00e9lev\u00e9e \u00ab par mesure de s\u00e9curit\u00e9 \u00bb<\/h3>\n<p class=\"ds-markdown-paragraph\">Une viscosit\u00e9 \u00e9lev\u00e9e n'est pas toujours synonyme de meilleures performances. Dans les mortiers autonivelants, une viscosit\u00e9 \u00e9lev\u00e9e emprisonne l'air et emp\u00eache l'\u00e9coulement. Dans les colles \u00e0 carrelage, une viscosit\u00e9 trop \u00e9lev\u00e9e r\u00e9duit le mouillage et diminue la r\u00e9sistance d'adh\u00e9rence.<\/p>\n\n<h3 style=\"font-size: 20px\">\u274c Erreur n\u00b0 2 : ne pas tenir compte de la capacit\u00e9 d'absorption du substrat<\/h3>\n<p class=\"ds-markdown-paragraph\">Sur les supports tr\u00e8s absorbants (par exemple, la brique rouge, les parpaings en b\u00e9ton cellulaire), les qualit\u00e9s standard d'HPMC s'av\u00e8rent souvent inefficaces. Il est imp\u00e9ratif d'utiliser une qualit\u00e9 \u00e0 haute r\u00e9tention d'eau.<\/p>\n\n<h3 style=\"font-size: 20px\">\u274c Erreur n\u00b0 3 : ne pas v\u00e9rifier la compatibilit\u00e9 entre l'HPMC et le ciment<\/h3>\n<p class=\"ds-markdown-paragraph\">Certaines qualit\u00e9s d'HPMC ralentissent trop fortement la prise du ciment. Effectuez toujours un test de compatibilit\u00e9 avec le type de ciment que vous utilisez.<\/p>\n\n<h3 style=\"font-size: 20px\">\u274c Erreur n\u00b0 4 : se concentrer uniquement sur le prix<\/h3>\n<p class=\"ds-markdown-paragraph\">Les HPMC \u00e0 bas prix pr\u00e9sentent souvent une viscosit\u00e9 irr\u00e9guli\u00e8re, une puret\u00e9 moindre (teneur en sel plus \u00e9lev\u00e9e) ou une mauvaise stabilit\u00e9 thermique du gel. Le co\u00fbt des r\u00e9clamations sur le terrain d\u00e9passe de loin les \u00e9conomies r\u00e9alis\u00e9es sur les mati\u00e8res premi\u00e8res.<\/p>\n\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3f4944 elementor-widget elementor-widget-heading\" data-id=\"a3f4944\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">V. L'approche TENESSY : vous accompagner dans le choix de votre HPMC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fce879 elementor-widget elementor-widget-text-editor\" data-id=\"8fce879\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Au\u00a0<strong>TENSITE<\/strong>, nous ne nous contentons pas de vendre de l'HPMC. Nous proposons\u00a0<strong>assistance technique ax\u00e9e sur la formulation<\/strong>\u00a0pour aider les fabricants de mortier pr\u00eat \u00e0 l'emploi \u00e0 r\u00e9ussir.<\/p><h3>Notre processus comprend :<\/h3><ol start=\"1\"><li><p class=\"ds-markdown-paragraph\"><strong>Analyse des besoins<\/strong>\u00a0\u2013 Nous vous posons des questions sur le type de mortier utilis\u00e9, le march\u00e9 cible, l'\u00e9tat du support et les conditions climatiques.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Contr\u00f4le des \u00e9chantillons<\/strong> \u2013 Des \u00e9chantillons gratuits des qualit\u00e9s d'HPMC recommand\u00e9es pour vos essais en interne.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Commentaires sur l'optimisation<\/strong>\u00a0\u2013 Nos chimistes vous accompagnent dans l'ajustement pr\u00e9cis du dosage<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Une cha\u00eene d'approvisionnement coh\u00e9rente<\/strong>\u00a0\u2013 Tra\u00e7abilit\u00e9 totale et stabilit\u00e9 d'un lot \u00e0 l'autre.<\/p><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9cf3064 elementor-widget elementor-widget-heading\" data-id=\"9cf3064\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d55bd9a elementor-widget elementor-widget-text-editor\" data-id=\"d55bd9a\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Le choix de la qualit\u00e9 d'HPMC adapt\u00e9e \u00e0 la formulation de votre mortier pr\u00eat \u00e0 l'emploi est une d\u00e9cision technique strat\u00e9gique, et non un simple achat de produit de base.\u00a0<strong>Viscosit\u00e9, r\u00e9tention d'eau, temp\u00e9rature de g\u00e9lification et chimie de substitution<\/strong>\u00a0doivent tous \u00eatre adapt\u00e9s au type de mortier utilis\u00e9, aux conditions climatiques et aux exigences de l'application.<\/p><p class=\"ds-markdown-paragraph\">Au\u00a0<a href=\"https:\/\/tenessy.com\/\"><strong>TENSITE<\/strong><\/a>, nous combinons de l'\u00e9ther de cellulose profond <a href=\"https:\/\/tenessy.com\/hpmc-supplier\/innovation\/\">R&amp;D<\/a> une expertise associ\u00e9e \u00e0 un accompagnement concret dans la formulation de mortiers pr\u00eats \u00e0 l'emploi. Que vous produisiez\u00a0<strong>colles \u00e0 base de ciment pour carrelage, enduits \u00e0 base de pl\u00e2tre, mortiers autonivelants ou enduits ext\u00e9rieurs<\/strong>, notre \u00e9quipe peut vous aider \u00e0 choisir et \u00e0 valider la qualit\u00e9 d'HPMC la mieux adapt\u00e9e, de mani\u00e8re efficace et fiable.<\/p>\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":"<p>Dans le monde de la production de mortier sec, de petites diff\u00e9rences dans les mati\u00e8res premi\u00e8res peuvent entra\u00eener des variations importantes dans les performances du produit final. <\/p>","protected":false},"author":1,"featured_media":14472,"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":[35],"tags":[],"class_list":["post-14465","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - 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