This paper presents a literature review about aerogel-based products for building, focusing on the plasters used within the architectural restoration sector. Aerogel has entered the construction field in the last two decades as a component of many insulation products, due to its high thermal performance. Aerogel-based plasters allow the matching of high thermal performance and limited thickness. This makes them suitable when retrofitting an existing building and also when restoring a heritage building. We analyze the results of recent research, focusing on the most commonly used methods for assessing the thermal performances and durability of aerogel-based plasters. As a result of this review, we propose a guideline for manufacturing samples destined for laboratory tests.
Negli ultimi decenni, l'intervento sugli edifici esistenti ha registrato sempre maggior interesse coinvolgendo il costruito diffuso, parte integrante del tessuto urbano delle città come dei centri abitati minori. Il contributo illustra le necessità di adeguamento degli edifici storici a fronte dell'attenzione verso le aree rurali e marginali emersa oggi maggiormente con la pandemia Covid-19. In evidenza èil rapporto tra il processo di efficientamento energetico, le esigenze di conservazione e l'adeguamento d'uso e gestione del patrimonio costruito. Questa riflessione prende in considerazione l'evoluzione del mercato immobiliare analizzando gli strumenti normativi in tema di retrofit energetico e le strategie di agevolazione fiscale in risposta all'attuale situazione di crisi.
In recent decades, the Italian building trade has recorded an increasing interest in the renovation and improvement of both listed and unlisted existing buildings by the Ministry of Culture, growing the debate on adapting historical buildings to current sustainability needs. The Italian National Institute of Statistics (ISTAT) observed the increase in family commuting and the attractiveness of marginal territories. Despite the scarcity of services, one-fifth of Italian small municipalities are attractive according to some indicators, primarily the demographic growth in the last three years. The COVID-19 pandemic has contributed to the re-evaluation of inland areas. Remote working and the new need for open spaces could increase the return to small villages and be further boosted by the fiscal incentives. This paper considers the evolution of last year’s real estate market, evaluating whether the regulatory tools for energy retrofit and tax relief meet the trade crisis with a possible benefit of preserving historical buildings. This research cannot ignore the European background; therefore, this paper offers an overview of EU regulatory strategies for energy efficiency recently issued to increase sustainability, focusing on tax credits for improving existing buildings. In conclusion, some considerations are proposed for future in-depth research.
Il dibattito attorno alle aree e ai temi montani è stato per anni marginale rispetto alle politiche di sviluppo nazionali e alle riflessioni teoriche. Da qualche anno il rinnovato interesse per le aree interne ha posto nuovamente attenzione al destino dei territori montani.L'emergenza sanitaria da Covid 19 ha incrementato l'interesse per le aree lontane dai centri metropolitani e accelerato il dibattito e la urgente programmazione per la riattivazione delle aree interne. Partendo dalle tematiche emerse durante un ciclo di seminari promosso nell'ambito del progetto ‘Fragilità Territoriali' del DAStU / PoliMI, il presente articolo mira a riflettere su due temi chiave, riabitare e neorurale, che includono i concetti di identità, comunità, sostenibilità e cambiamento climatico.
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