{"id":981,"date":"2024-02-04T13:49:12","date_gmt":"2024-02-04T05:49:12","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=981"},"modified":"2024-02-05T13:27:36","modified_gmt":"2024-02-05T05:27:36","slug":"the-role-of-air-entraining-agents-in-building-materials","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/fr\/blogs\/the-role-of-air-entraining-agents-in-building-materials.html","title":{"rendered":"Le r\u00f4le des agents entra\u00eeneurs d'air dans les mat\u00e9riaux de construction"},"content":{"rendered":"<p>L'agent entra\u00eeneur d'air, \u00e9galement connu sous le nom d'agent entra\u00eeneur d'air, est un agent tensioactif hydrophobe. Il est dissous dans l'eau et ajout\u00e9 au m\u00e9lange de b\u00e9ton, ce qui peut g\u00e9n\u00e9rer un grand nombre de petites bulles d'air pendant le processus de brassage. Les agents entra\u00eeneurs d'air peuvent am\u00e9liorer la maniabilit\u00e9, la r\u00e9tention d'eau et la coh\u00e9sion des m\u00e9langes de b\u00e9ton, ainsi que la fluidit\u00e9 du b\u00e9ton. Dans le processus de m\u00e9lange des m\u00e9langes de b\u00e9ton, un grand nombre d'adjuvants \u00e0 microbulles uniform\u00e9ment r\u00e9partis, ferm\u00e9s et stables sont introduits.<\/p>\n<p>1. L'ajout d'un agent entra\u00eeneur d'air de la s\u00e9rie AH peut am\u00e9liorer l'affaissement, la fluidit\u00e9 et la plasticit\u00e9 du b\u00e9ton.<br \/>\n2. R\u00e9duire le ressuage et la s\u00e9gr\u00e9gation du b\u00e9ton et am\u00e9liorer l'homog\u00e9n\u00e9it\u00e9 du b\u00e9ton.<br \/>\n3. M\u00e9lang\u00e9 \u00e0 des agents entra\u00eeneurs d'air de la s\u00e9rie AH, le module d'\u00e9lasticit\u00e9 est faible, la rigidit\u00e9 est faible et la flexibilit\u00e9 est bonne.<br \/>\n4. Le coefficient de diffusion et de conduction thermique du b\u00e9ton est r\u00e9duit, ce qui am\u00e9liore la stabilit\u00e9 volum\u00e9trique du b\u00e9ton, renforce la r\u00e9sistance aux intemp\u00e9ries des structures de terrain et prolonge la dur\u00e9e de vie du b\u00e9ton routier.<br \/>\n5. Am\u00e9liorer consid\u00e9rablement la r\u00e9sistance au gel, la r\u00e9sistance \u00e0 la salinit\u00e9, l'imperm\u00e9abilit\u00e9, la r\u00e9sistance aux sulfates et la r\u00e9sistance aux alcalis du b\u00e9ton par rapport \u00e0 la r\u00e9action des agr\u00e9gats.<\/p>\n<div><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-972\" src=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/5-12.png\" alt=\"\" width=\"585\" height=\"491\" srcset=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/5-12.png 585w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/5-12-300x252.png 300w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/5-12-14x12.png 14w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><\/div>","protected":false},"excerpt":{"rendered":"<p>L'agent entra\u00eeneur d'air, \u00e9galement connu sous le nom d'agent entra\u00eeneur d'air, est un agent tensioactif hydrophobe. Il est dissous dans l'eau et ajout\u00e9 au m\u00e9lange de b\u00e9ton, ce qui peut g\u00e9n\u00e9rer un grand nombre de petites bulles d'air pendant le processus de brassage. Les agents entra\u00eeneurs d'air peuvent am\u00e9liorer la maniabilit\u00e9, la r\u00e9tention d'eau et la coh\u00e9sion des m\u00e9langes de b\u00e9ton, ainsi que la fluidit\u00e9 du b\u00e9ton. [...]<\/p>","protected":false},"author":1,"featured_media":972,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The role of air-entraining agents in building materials - JOYFORCE INDUSTRIAL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.joyforce.com\/fr\/blogs\/the-role-of-air-entraining-agents-in-building-materials.html\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The role of air-entraining agents in building materials - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Air-entraining agent, also known as air-entraining agent, is a hydrophobic surfactant. It is dissolved in water and added to the concrete mixture, which can generate a large number of tiny air bubbles during the stirring process. Air-entraining agents can improve the workability, water retention and cohesion of concrete mixtures, and improve the fluidity of concrete. 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