{"id":7350,"date":"2024-12-02T16:46:01","date_gmt":"2024-12-02T15:46:01","guid":{"rendered":"https:\/\/blog.structuralia.com\/capa-de-compresion"},"modified":"2026-03-27T13:50:06","modified_gmt":"2026-03-27T12:50:06","slug":"compression-layer","status":"publish","type":"post","link":"https:\/\/blog.structuralia.com\/en\/capa-de-compresion","title":{"rendered":"Key Considerations for the Compression Layer in Concrete Slabs"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.structuralia.com\/en\/capa-de-compresion\/#%C2%BFQue_partes_que_componen_una_capa_de_compresion\" >What parts make up a compression layer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.structuralia.com\/en\/capa-de-compresion\/#%C2%BFCuales_son_las_claves_para_la_correcta_ejecucion_de_una_capa_de_compresion\" >What are the key factors for properly installing a compression layer?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.structuralia.com\/en\/capa-de-compresion\/#1_Dosificacion\" >1. Dosage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.structuralia.com\/en\/capa-de-compresion\/#2_Colado\" >2. Straining<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.structuralia.com\/en\/capa-de-compresion\/#3_Curado\" >3. Curing<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Here's an explanation of the <strong>Three Keys to Properly Applying a Compression Layer<\/strong> In a floor slab: Mixing, pouring, and curing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>compression layer,<\/strong> which can sometimes be found in bibliographies as \u201c<strong>sheet metal<\/strong>\u201d, is the <strong>concrete layer<\/strong> which spans the joists and hollow blocks of a floor slab and serves to transfer the vertical loads from the bathroom to the joists, and subsequently to the columns and the floor. It is a <strong>cast-in-place concrete structural element,<\/strong> It is typically used on-site and must be reinforced on the inside with electro-welded mesh.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue_partes_que_componen_una_capa_de_compresion\"><\/span>What parts make up a compression layer?<br><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The main component is the <strong>concrete<\/strong>, for which a <a href=\"https:\/\/hormigon.eu\/hormigon-ha-25\/\" target=\"_blank\" rel=\"noreferrer noopener\">HA <\/a>25, comprising a <strong>minimum thickness of 40 mm<\/strong> on the joists and support members made of ceramic or concrete; of <strong>50 mm<\/strong> when installed over interlayer materials of any other type (such as polystyrene) and in seismic zones with a design acceleration greater than 0.16 g.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Along with concrete is the <strong>welded wire mesh <\/strong>in a workshop-style setting <a href=\"https:\/\/www.unifort.es\/pavimentos-industriales\/mallas-electrosoldadas-calidad-b500t\/\" target=\"_blank\" rel=\"noreferrer noopener\">B500T<\/a> made of corrugated wire, which is used as reinforcement. <strong>The spacing between wires must not exceed 350 mm in either direction<\/strong>, with at least <strong>4 mm in diameter<\/strong> of the reinforcement elements. As a guideline for the quantity (for Spain), we recommend following the specifications in the <strong>Table 42.3.5 of the EHE-08<\/strong> (in Spain).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFCuales_son_las_claves_para_la_correcta_ejecucion_de_una_capa_de_compresion\"><\/span>What are the key factors for properly installing a compression layer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Dosificacion\"><\/span>1. Dosage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ideally, it would be great to have a <strong>ready-mix concrete<\/strong>, with the strength and consistency specified by the builder. In this case, it is recommended to specify concrete, <strong>at least H 17<\/strong>, with a maximum slump of 7 cm so that it is not too fluid, and a water-to-cement ratio of 0.50 to 0.55.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If dosing on site:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 part cement.<\/li>\n\n\n\n<li>2 parts sand (3 if it's very wet).<\/li>\n\n\n\n<li>3 parts stone.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It is essential to take into account the factors that influence the strength of concrete. In fact, the accuracy of the materials and the control of the mix are related to other structural elements, such as the <a href=\"https:\/\/blog.structuralia.com\/en\/tipos-biela-funcion-aplicaciones\/\" data-type=\"link\" data-id=\"https:\/\/blog.structuralia.com\/tipos-biela-funcion-aplicaciones\">Types of Connecting Rods, Their Function, and Applications<\/a>, which are also essential for transmitting loads within building systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Colado\"><\/span>2. Straining<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">At this stage, it is recommended that <strong>Thoroughly wet the beams and vaulted ceiling tiles<\/strong> prior to pouring the concrete so that they are saturated with water. It is also important to pay attention to the surrounding weather conditions, considering that <strong>In winter, concrete should never be poured at temperatures below 5 \u00b0C, and in summer, it is best to avoid the hours around noon.<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When installing the electro-welded mesh, it is important to <strong>distribute the fresh concrete so that it does not accumulate excessively in any part of the floor slab<\/strong>, avoiding point loads on the joists. These recommendations apply to both concrete mixed on-site and concrete mixed at a plant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.hemoeco.com\/blog\/maquinaria-para-construccion-colado-de-losa\/\"><\/a><em>Concrete pouring process. <\/em><a href=\"https:\/\/www.hemoeco.com\/blog\/maquinaria-para-construccion-colado-de-losa\/\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Source: Hemoeco<\/em><\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Curado\"><\/span>3. Curing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The final strength of the concrete depends on this phase, and contrary to what many people believe, <strong>Simply sealing the pores and cracks with cement grout is not enough to fix poor curing.<\/strong>. Proper curing of concrete is closely related to the hydration of the cement, and what must be avoided is abruptly depriving it of moisture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So what you need to do is <strong>Maintain as consistent a level of moisture as possible during the hydration process<\/strong> of the cement, so that the particles, as they gradually hydrate, do so uniformly, <strong>preventing cracks and surface fractures<\/strong>. Various methods are used for this. (Learn about them <a href=\"https:\/\/blog.structuralia.com\/en\/como-calcular-proporcion-hormigon-para-solera\/\">here<\/a>)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/enriquealario.com\/curado-de-hormigon\/\"><\/a><em>Concrete curing process. <a href=\"https:\/\/enriquealario.com\/curado-de-hormigon\/\" target=\"_blank\" rel=\"noreferrer noopener\">Enriquelario.com<\/a><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If all of the guidelines mentioned above are followed, the result will be a <strong>compression layer properly bonded to the joists<\/strong>, which results in improved mechanical performance of the floor slab. This provides adequate and sufficient strength to fulfill its role in distributing loads horizontally to the building\u2019s other structural elements.<\/p>","protected":false},"excerpt":{"rendered":"<p>Te explicamos las tres claves para ejecutar correctamente una capa de compresi\u00f3n en un forjado: La dosificaci\u00f3n, el colado y el curado. La capa de compresi\u00f3n, que a veces puede encontrarse en bibliograf\u00edas como \u201cchapa\u201d, es la capa de hormig\u00f3n que se extiende sobre las viguetas y bovedillas de un forjado, y que sirve para [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":4957,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_ayudawp_aiss_exclude":false,"_ayudawp_aiss_summary":"","_ayudawp_aiss_summary_provider":"","_ayudawp_aiss_summary_hash":"","footnotes":""},"categories":[267],"tags":[],"class_list":["post-7350","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-educacion-stem-ingenieria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Claves para capa de compresi\u00f3n en forjados de hormig\u00f3n<\/title>\n<meta name=\"description\" content=\"Te explicamos las tres claves para ejecutar 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