{"id":26899,"date":"2026-10-21T09:10:02","date_gmt":"2026-10-21T07:10:02","guid":{"rendered":"https:\/\/cienciagandia.webs.upv.es\/?p=26899"},"modified":"2026-10-21T09:10:48","modified_gmt":"2026-10-21T07:10:48","slug":"els-materials-acustics-sostenibles-resisteixen-el-pas-del-temps","status":"publish","type":"post","link":"https:\/\/cienciagandia.webs.upv.es\/ca\/2026\/10\/els-materials-acustics-sostenibles-resisteixen-el-pas-del-temps\/","title":{"rendered":"Els materials ac\u00fastics sostenibles resisteixen el pas del temps?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La cerca de materials m\u00e9s sostenibles per a la construcci\u00f3 \u00e9s un dels grans reptes de la nostra societat. En un context en el qual l&#8217;economia circular i la reducci\u00f3 de l&#8217;impacte ambiental s\u00f3n cada vegada m\u00e9s importants, la utilitzaci\u00f3 de materials reciclats i fibres naturals en edificis s&#8217;ha convertit en una alternativa prometedora i necess\u00e0ria. No obstant aix\u00f2, una pregunta continua sent fonamental: mantenen aquests materials les seues prestacions despr\u00e9s de molts anys d&#8217;\u00fas?<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2026\/10\/Foto-material-1-scaled.webp\" alt=\"\" class=\"wp-image-26884\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Un <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2214509526005905?via%3Dihub\">recent estudi<\/a> publicat en la revista <em>Case Studies in Construction Materials<\/em> aporta una resposta basada en l&#8217;evid\u00e8ncia cient\u00edfica. La investigaci\u00f3, liderada pel professor <a href=\"https:\/\/www.upv.es\/pls\/oalu\/sic_person.Info?p_alias=jesalba&amp;P_IDIOMA=v\">Jes\u00fas Alba<\/a> del Campus de Gandia de la Universitat Polit\u00e8cnica de Val\u00e8ncia (UPV) i en la qual tamb\u00e9 participen Romina del Rey i Jordi Garcia, analitza la durabilitat ac\u00fastica de materials fibrosos sostenibles despr\u00e9s de m\u00e9s de setze anys d&#8217;envelliment natural en condicions ambientals interiors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Materials sostenibles per a millorar el confort ac\u00fastic<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Els materials absorbents ac\u00fastics s&#8217;utilitzen habitualment en edificis per a reduir-ne la reverberaci\u00f3 i millorar el confort sonor d&#8217;espais com aules, oficines, auditoris o habitatges. Tamb\u00e9 \u00e9s possible el seu \u00fas per a millorar l&#8217;a\u00efllament ac\u00fastic. Tradicionalment, molts d&#8217;aquests productes s&#8217;han fabricat amb materials minerals o sint\u00e8tics. No obstant aix\u00f2, en les \u00faltimes d\u00e8cades ha crescut l&#8217;inter\u00e8s per alternatives elaborades a partir de fibres reciclades i recursos naturals.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2026\/10\/Foto-material-4-scaled.webp\" alt=\"\" class=\"wp-image-26887\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Entre aquests materials destaquen fibres procedents de poli\u00e8ster reciclat, residus t\u00e8xtils recuperats, cot\u00f3 reciclat, llana, c\u00e0nem, jute, kenaf o fibra de coco. Nombrosos estudis havien demostrat pr\u00e8viament que aquests productes poden oferir una capacitat d&#8217;absorci\u00f3 ac\u00fastica comparable a la dels materials convencionals. No obstant aix\u00f2, hi havia un important buit de coneixement sobre el seu comportament a llarg termini.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Un experiment \u00fanic en el temps<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El que fa especialment rellevant aquest treball \u00e9s el seu car\u00e0cter longitudinal. L&#8217;equip investigador va recuperar 32 materials ac\u00fastics que havien sigut fabricats i caracteritzats originalment el 2009 dins d&#8217;un projecte europeu LIFE. Despr\u00e9s de finalitzar aquell projecte, les mostres van quedar emmagatzemades durant aproximadament 16 anys i mig en condicions ambientals no controlades, exposades a variacions de temperatura, humitat i acumulaci\u00f3 de pols similars a les que poden trobar-se en molts espais interiors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les temperatures experimentades van oscil\u00b7lar entre aproximadament 0 \u00b0C a l&#8217;hivern i 35 \u00b0C a l&#8217;estiu, amb humitats relatives que van variar entre el 45% i el 85%. Posteriorment, les mostres van ser reavaluades utilitzant exactament els mateixos procediments experimentals emprats en la seua caracteritzaci\u00f3 inicial, fet que va permetre una comparaci\u00f3 directa i rigorosa dels resultats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L&#8217;estudi analitz\u00e0 par\u00e0metres fonamentals per al rendiment ac\u00fastic d&#8217;aquests materials, com el coeficient d&#8217;absorci\u00f3 sonora a incid\u00e8ncia normal i la resistivitat al flux d&#8217;aire, dos indicadors clau per a determinar la capacitat d&#8217;absorci\u00f3 ac\u00fastica d&#8217;un material fibr\u00f3s.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2026\/10\/Foto-laboratorio-scaled.webp\" alt=\"\" class=\"wp-image-26890\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Resultats molt prometedors<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Els resultats mostren que, en termes generals, els materials van conservat gran part de les seues propietats ac\u00fastiques originals, fins i tot despr\u00e9s de m\u00e9s d&#8217;una d\u00e8cada i mitja d&#8217;envelliment natural. Aquesta \u00e9s una not\u00edcia especialment positiva per al sector de la construcci\u00f3 sostenible, ja que demostra que molts materials fabricats amb recursos reciclats o naturals poden oferir prestacions duradores.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2026\/10\/Foto-material-3-scaled.webp\" alt=\"\" class=\"wp-image-26893\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La investigaci\u00f3 tamb\u00e9 va identificar difer\u00e8ncies entre fam\u00edlies de materials. Els compostos predominantment sint\u00e8tics van mostrar una major estabilitat al llarg del temps, mentre que els materials naturals o h\u00edbrids van presentar una sensibilitat un poc major als canvis ambientals i estructurals. Aix\u00ed i tot, la conservaci\u00f3 global de les seues propietats ac\u00fastiques va ser notable.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2026\/10\/Foto-material-2-scaled.webp\" alt=\"\" class=\"wp-image-26896\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A m\u00e9s dels mesuraments ac\u00fastics, l&#8217;equip investigador va realitzar an\u00e0lisi mitjan\u00e7ant microsc\u00f2pia \u00f2ptica per a avaluar l&#8217;estat actual de les fibres i estudiar caracter\u00edstiques com el seu di\u00e0metre i porositat. Aquestes an\u00e0lisis van ajudar a comprendre millor els possibles canvis f\u00edsics associats a l&#8217;envelliment natural.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00e9s confian\u00e7a per a la construcci\u00f3 circular<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Encara que les mostres no van estar instal\u00b7lades en edificis durant tot el per\u00edode estudiat, s\u00ed que van romandre sotmeses a factors ambientals comparables a aquells que &nbsp;experimenten molts materials de condicionament ac\u00fastic en interiors. Per aix\u00f2, els resultats ofereixen informaci\u00f3 extremadament valuosa per a arquitectes, arquitectes, professionals de l&#8217;enginyeria, fabricants i responsables d&#8217;especificar materials en projectes constructius.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La principal conclusi\u00f3 de l&#8217;estudi \u00e9s clara: els materials ac\u00fastics fabricats a partir de fibres reciclades i naturals no sols poden proporcionar un excel\u00b7lent rendiment inicial, sin\u00f3 que tamb\u00e9 s\u00f3n capa\u00e7os de mantenir les seues prestacions durant llargs per\u00edodes de temps. Aquesta evid\u00e8ncia cient\u00edfica contribueix a reduir la incertesa existent sobre la seua durabilitat i refor\u00e7a el seu potencial com a alternativa sostenible per al disseny d&#8217;edificis m\u00e9s eficients i respectuosos amb el medi ambient.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Treballs com aquest demostren que la sostenibilitat i la funcionalitat poden anar de bracet. En un moment en el qual la transici\u00f3 cap a una construcci\u00f3 m\u00e9s circular resulta imprescindible, disposar de dades reals sobre el comportament a llarg termini d&#8217;aquests materials suposa un pas important per a accelerar la seua incorporaci\u00f3 en els edificis del futur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e9s informaci\u00f3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jes\u00fas Alba, Romina del Rey, Jordi Garcia-Peris, \u201cDurability of recycled and natural fibrous acoustic materials undergoing long\u2011term indoor ageing\u201d, <em>Case Studies in Construction Materials<\/em>, volume 25, 2026, e06339, ISSN 2214-5095, <a href=\"https:\/\/doi.org\/10.1016\/j.cscm.2026.e06339\">https:\/\/doi.org\/10.1016\/j.cscm.2026.e06339<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La cerca de materials m\u00e9s sostenibles per a la construcci\u00f3 \u00e9s un dels grans reptes de la nostra societat. En un context en el qual &#8230; <a title=\"Els materials ac\u00fastics sostenibles resisteixen el pas del temps?\" class=\"read-more\" href=\"https:\/\/cienciagandia.webs.upv.es\/ca\/2026\/10\/els-materials-acustics-sostenibles-resisteixen-el-pas-del-temps\/\" aria-label=\"Read more about Els materials ac\u00fastics sostenibles resisteixen el pas del temps?\">Llegir m\u00e9s<\/a><\/p>\n","protected":false},"author":19,"featured_media":26881,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252],"tags":[],"class_list":["post-26899","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Els materials ac\u00fastics sostenibles resisteixen el pas del temps? - Campus de Gandia Ciencia - UPV Universitat Polit\u00e8cnica de Val\u00e8ncia<\/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:\/\/cienciagandia.webs.upv.es\/ca\/2026\/10\/els-materials-acustics-sostenibles-resisteixen-el-pas-del-temps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Els materials ac\u00fastics sostenibles resisteixen el pas del temps? - Campus de Gandia Ciencia - UPV Universitat Polit\u00e8cnica de Val\u00e8ncia\" \/>\n<meta property=\"og:description\" content=\"La cerca de materials m\u00e9s sostenibles per a la construcci\u00f3 \u00e9s un dels grans reptes de la nostra societat. 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- Campus de Gandia Ciencia - UPV Universitat Polit\u00e8cnica de Val\u00e8ncia","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cienciagandia.webs.upv.es\/ca\/2026\/10\/els-materials-acustics-sostenibles-resisteixen-el-pas-del-temps\/","og_locale":"en_US","og_type":"article","og_title":"Els materials ac\u00fastics sostenibles resisteixen el pas del temps? - Campus de Gandia Ciencia - UPV Universitat Polit\u00e8cnica de Val\u00e8ncia","og_description":"La cerca de materials m\u00e9s sostenibles per a la construcci\u00f3 \u00e9s un dels grans reptes de la nostra societat. 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