{"id":6845,"date":"2026-08-20T15:49:47","date_gmt":"2026-08-20T13:49:47","guid":{"rendered":"https:\/\/www.procertus.be\/interlabo-cendres-volantes-2023-2025\/"},"modified":"2026-08-20T16:53:38","modified_gmt":"2026-08-20T14:53:38","slug":"interlabo-cendres-volantes-2023-2025","status":"publish","type":"post","link":"https:\/\/www.procertus.be\/fr\/interlabo-cendres-volantes-2023-2025\/","title":{"rendered":"Interlabo Cendres volantes 2023 &#8211; 2025"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1456px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>Des r\u00e9sultats d\u2019essais fiables constituent la base de toute d\u00e9claration de qualit\u00e9 pour les cendres volantes dans le b\u00e9ton. C\u2019est pourquoi PROCERTUS et KIWA ont organis\u00e9, de novembre 2023 \u00e0 octobre 2025, une nouvelle <strong>campagne interlaboratoires sur les cendres volantes<\/strong>. Depuis plus de 10 ans, cette campagne repr\u00e9sente une valeur s\u00fbre dans le secteur et offre aux laboratoires une r\u00e9f\u00e9rence objective pour \u00e9valuer leurs performances.<\/p>\n<h3 aria-level=\"1\">Qu&rsquo;est-ce que la campagne interlaboratoires Cendres volantes ?<\/h3>\n<p>Les laboratoires re\u00e7oivent des \u00e9chantillons de r\u00e9f\u00e9rence de ciment et de cendres volantes, tous deux issus d\u2019un m\u00eame lot. Ils analysent ces \u00e9chantillons dans le cadre de leur <strong>proc\u00e9dure d\u2019essai habituelle<\/strong>, sans traitement de faveur. La campagne suit en effet un <strong>principe de Round Robin\u00a0<\/strong>: chaque \u00e9chantillon est soumis \u00e0 plusieurs essais par tous les laboratoires participants. Cela permet d\u2019obtenir une <strong>image r\u00e9aliste et comparable du fonctionnement quotidien<\/strong>, et d\u2019<strong>\u00e9valuer objectivement<\/strong> les performances d\u2019un laboratoire \u00e0 l\u2019autre.<\/p>\n<p>Les avantages pour les participants :<\/p>\n<ul>\n<li>Observation continue des performances<\/li>\n<li>Comparaison avec d\u2019autres laboratoires sp\u00e9cialis\u00e9s<\/li>\n<li>D\u00e9tection rapide des \u00e9carts ou des points \u00e0 am\u00e9liorer au sein de leurs laboratoires<\/li>\n<\/ul>\n<p>Pour les organismes de certification et les utilisateurs n\u2019ayant pas particip\u00e9, le rapport offre \u00e9galement un aper\u00e7u de la <strong>fiabilit\u00e9 des r\u00e9sultats d\u2019essai<\/strong> et de la coh\u00e9rence des analyses.<\/p>\n<h3 aria-level=\"1\">Qu&rsquo;a-t-on test\u00e9 ?<\/h3>\n<p>Au cours de la campagne interlaboratoires, les laboratoires ont examin\u00e9 \u00e0 la fois les <strong>propri\u00e9t\u00e9s chimiques<\/strong> et <strong>m\u00e9caniques<\/strong> des cendres volantes. La s\u00e9lection de ces propri\u00e9t\u00e9s repose sur les <strong>normes europ\u00e9ennes<\/strong> et l\u2019exp\u00e9rience acquise dans le domaine des applications du b\u00e9ton, de sorte que les r\u00e9sultats ont une pertinence directe pour la qualit\u00e9 et la certification.<\/p>\n<p>Propri\u00e9t\u00e9s chimiques :<\/p>\n<ul>\n<li>Entre autres, la d\u00e9termination de la teneur en SO\u2083, Na\u2082O, K\u2082O et d\u2019autres \u00e9l\u00e9ments ayant une influence sur les propri\u00e9t\u00e9s des cendres volantes<\/li>\n<li>La perte au feu (Loss on ignition LoI) pour d\u00e9terminer la teneur en mati\u00e8re organique<\/li>\n<\/ul>\n<p>Ces caract\u00e9ristiques sont importantes car elles <strong>ont une influence directe sur les performances du b\u00e9ton<\/strong>, telles que le d\u00e9veloppement de la r\u00e9sistance, la stabilit\u00e9 chimique et la durabilit\u00e9.<\/p>\n<p>Propri\u00e9t\u00e9s m\u00e9caniques :<\/p>\n<ul>\n<li>R\u00e9sistance \u00e0 la compression apr\u00e8s 28 et 90 jours<\/li>\n<li>Indice d&rsquo;activit\u00e9 (le degr\u00e9 de r\u00e9activit\u00e9 des cendres volantes en combinaison avec le ciment)<\/li>\n<li>Finesse<\/li>\n<li>Temps de prise initial<\/li>\n<li>Masse volumique (densit\u00e9)<\/li>\n<\/ul>\n<h3>Conclusions principales<\/h3>\n<p>Certaines moyennes obtenues lors de la campagne interlaboratoires sont pr\u00e9sent\u00e9es dans le tableau ci-dessous.<\/p>\n<\/div>\n<div class=\"table-2\" style=\"--awb-margin-bottom:5%;\">\n<table width=\"100%\">\n<thead>\n<tr>\n<th align=\"left\">Propri\u00e9t\u00e9<\/th>\n<th align=\"left\">Moyenne<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">R\u00e9sistance \u00e0 la compression (28 jours)<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW100800228 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW100800228 BCX0\">56,5 MPa<\/span><\/span><span class=\"EOP SCXW100800228 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">R\u00e9sistance \u00e0 la compression (90 jours)<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW242395668 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW242395668 BCX0\">71,8 MPa<\/span><\/span><span class=\"EOP SCXW242395668 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Indice d&rsquo;activit\u00e9 (28 jours)<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW200401889 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW200401889 BCX0\">80,9 %<\/span><\/span><span class=\"EOP SCXW200401889 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Indice d&rsquo;activit\u00e9 (90 jours)<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW241082000 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW241082000 BCX0\">93,5 %<\/span><\/span><span class=\"EOP SCXW241082000 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">D\u00e9but de prise<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW250679793 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW250679793 BCX0\">153 min<\/span><\/span><span class=\"EOP SCXW250679793 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Masse volumique<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW91510110 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW91510110 BCX0\">2336 kg<\/span><span class=\"NormalTextRun SCXW91510110 BCX0\">\/m\u00b3<\/span><\/span><span class=\"EOP SCXW91510110 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Finesse<\/td>\n<td align=\"left\"><span class=\"TextRun SCXW69427701 BCX0\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW69427701 BCX0\">16,7 %<\/span><\/span><span class=\"EOP SCXW69427701 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-2\"><p>Les param\u00e8tres chimiques tels que CaO, SiO\u2082 et Al\u2082O\u2083 se situaient \u00e9galement dans une fourchette \u00e9troite, ce qui t\u00e9moigne d'une bonne reproductibilit\u00e9 entre laboratoires. Les \u00e9carts ou valeurs aberrantes ont \u00e9t\u00e9 trait\u00e9s de mani\u00e8re transparente, \u00e0 l'appui de m\u00e9thodes statistiques telles que les z-scores et l'analyse des valeurs aberrantes de Grubbs.<\/p>\n<h3>Le r\u00f4le de PROCERTUS<\/h3>\n<p>PROCERTUS coordonne la campagne, traite les r\u00e9sultats <strong>de mani\u00e8re confidentielle et anonyme<\/strong> et fournit des explications techniques. La campagne interlaboratoires sur les cendres volantes n'est pas seulement un outil de contr\u00f4le, mais aussi un outil d'apprentissage qui aide les laboratoires dans la gestion de la qualit\u00e9 et l'analyse comparative.<\/p>\n<h4>Suivi \u00e0 long terme<\/h4>\n<p>Via l'extranet PROCERTUS, les laboratoires peuvent comparer leurs performances sur plusieurs ann\u00e9es, identifier des tendances et renforcer leurs audits internes.<\/p>\n<h3>Valeur ajout\u00e9e pour la certification<\/h3>\n<p>Un laboratoire fiable est essentiel dans le cadre des certifications BENOR et CE. La participation \u00e0 la campagne interlaboratoires Cendres volantes offre un test objectif de la pr\u00e9cision de mesure et de la coh\u00e9rence, renfor\u00e7ant ainsi la confiance dans les r\u00e9sultats et dans le syst\u00e8me d'assurance qualit\u00e9.<\/p>\n<p><strong><a href=\"https:\/\/www.procertus.be\/wp-content\/uploads\/2026\/08\/Interlabo-fly-ash-2023-2025-Final-report-anonymous-EN.pdf\" target=\"_blank\" rel=\"noopener\">T\u00e9l\u00e9chargez le rapport complet ici.<\/a><\/strong><\/p>\n<p>Vous souhaitez savoir ce que cela signifie pour votre laboratoire ou votre certification ?<br \/>\nContactez PROCERTUS :<\/p>\n<ul>\n<li><span data-contrast=\"none\">02 234 67 60<\/span><\/li>\n<li><a href=\"mailto:interlab.fly-ash@procertus.be\"><span data-contrast=\"none\">interlab.fly-ash@procertus.be<\/span><\/a><span data-ccp-props=\"\">\u00a0<\/span><\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":6,"featured_media":6843,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[140,141],"tags":[],"class_list":["post-6845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-certification-2","category-laboratoires-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Interlaboratoires Cendres volantes<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez les r\u00e9sultats de la campagne interlaboratoires Cendres volantes 2023-2025. 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