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Oggi, gli acquirenti di un abitazione si aspettano di ottenere di più dalla loro edificio. Vogliono, insieme alle qualità estetiche, una casa che si adatta al loro stile di vita, ma anche una costruzione solida e di alta qualità. Maggiore comfort e sicurezza. Bollette più basse. Minore manutenzione. Il calcestruzzo isolato, Insulated Concrete Forms (ICFs) da tutti i vantaggi che hanno reso il calcestruzzo il materiale da costruzione più diffuso nel mondo. ICF migliora ancora le prestazione di questo materiale abbinando due strati di schiuma isolante. Questo dà alcuni vantaggi non trascurabili di maggior efficienza energetica, isolamento acustico e comfort abitativo.
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Insulated Concrete Forms (ICFs)
Insulating concrete forms result in cast-in-place concrete walls that are sandwiched between two layers of insulation material. These systems are strong and energy efficient. Common applications for this method of construction are low-rise buildings, with property uses ranging from residential to commercial to industrial. Traditional finishes are applied to interior and exterior faces, so the buildings look similar to typical construction, although the walls are usually thicker.
Strong walls:
- disaster resistance and safety
- mold, rot, mildew, and insect resistance (below grade can require termite protection)
- sound-blocking ability
- overall comfort
- energy efficiency and resultant cost savings
Contractors and builders like:
- fast, easy construction
- flexibility
- light weight for easy shipping and erection
- compatibility with carpenter trades
- ability to meet higher energy code mandates with less complicated construction
Sizes, Components, Configurations, Systems
ICF systems can vary in their design. "Flat" systems yield a continuous thickness of concrete, like a conventionally poured wall. The wall produced by "grid" systems has a waffle pattern where the concrete is thicker at some points than others. "Post and beam" systems have just that - discrete horizontal and vertical columns of concrete that are completely encapsulated in foam insulation. Whatever their differences, all major ICF systems are engineer-designed, code-accepted, and field-proven.
The two insulating faces are separated by some type of connector or web. Large preassembled blocks stack quickly on site. Panels or planks ship more compactly, but must be assembled into formwork on the job. Foam is most often EPS, expanded polystyrene. It can be XPS, extruded polystyrene, which is stronger, but also more costly. A few products are made with recycled foam or wood fiber in a nod to green construction. The salvaged material is formed into blocks with cement, making units ideal for direct application of plaster finishes.
Continua la lettura e consulta schemi e immagini
(tratto da "Concrete Homes" Portland Cement Association)
Dizionario tecnico
cast-in-place | gettato in opera |
low-rise buildings | edifici bassi |
finishes | finiture |
post and beam | pilastri e travi |
foam insulation | schiuma isolante |
planks | tavole, assi |
formwork | cassaforma |
plaster finishes | intonaco di finitura |
Scarica dalla colonna sulla destra il Rapporto 2010 del MIT sul Ciclo di vita e la performance degli edifici in calcestruzzo che analizza il loro impatto nella riduzione del Global Warming
Termine del mese
R-Value /U-Value - The R-Value of a substance is its direct measure of its resistance to transferring energy or heat; R Values are expressed using the metric units (m2.K/W). Basically the higher the figure the better it is at resisting energy transfer, so the easier it is to maintain a difference in temperatures across it for a longer time.
The U-value is the inverse of the R-Value; i.e. you divide 1 by either the R or U value to convert to the other unit. So as the R-Value goes up the U-Value goes down and as the R-Value goes down the U-Value goes up. So the U-Value is a measure of how well a material transmits heat. For instance a substance with an R-Value of 2 has a U-Value of 0.5 = (1 divided by 2).
(tratto da "EcoWho")
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Parole inglesi assonanti a parole italiane ma con diverso significato
Se dici: | carbon |
Stai dicendo: | carbonio |
Se vuoi dire: | carbone |
Devi usare: | coal |
Se dici: | dependant |
Stai dicendo: | familiare a carico |
Se vuoi dire: | dipendente |
Devi usare: | employee |
Scopri e segui la fun page della rubrica "Inglese per l'architettura" su Facebook.
documento
Scarica il file:
Calcestruzzo_isolato.pdf
documento
Scarica il file:
MIT_Buildings_LCA.pdf