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Descrizione
GRC denominato anche GFRC is a composite of Portland cement, fine aggregate, water, acrylic co-polymer, (AR) glass fiber reinforcement and additives. The AR (alkali resistant) glass fibers reinforce the concrete, much as steel reinforcing does in conventional concrete. The glass fiber reinforcement results in a product with much higher flexural and tensile strengths than normal concrete, allowing its use in thin-wall casting applications. GFRC is a lightweight, durable material that can be cast into nearly unlimited shapes, colors and textures. There are two basic processes used to fabricate GFRC – the Spray-Up process and the Premix process. The Premix process is further broken down into various production techniques such as spray premix, cast premix, pultrusion and hand lay-up. GFRC is primarily used as an exterior façade or cladding material for both new construction and for recladding or restoration of existing building facades. For these applications, the Spray-Up process is generally used and the GFRC “skin” is panelized on a steel stud frame and weighs 20-25 lbs per square foot (97-122 kg/sq.m)。Without the frame, GFRC will weigh 7-10 lbs per square foot (34-48kg/sq.m)
GRC-BF
GRC-GH
GRC-BF015
GRC-SF
GRC-SF037
GRC-STF
GRC-TF
GRC-WF
GRC-WTF
GRC-YG
GRC-YG043
GRC-WTF016
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Proprietà fisiche
| Costo dell'immobile | Metodo/risultato del test |
| Durezza Barcol | ASTM-D-2583 56 punti |
| Compressione | ASTM-C-39 10,810 psi |
| CET medio | ASTM-D-696 8.0 x 10-6 pollici/pollici/F° |
| Densità | ASTM-D-792 132.5 libbre/piedi cubi |
| Infiammabilità – Materiali di Classe I | ASTM-E-84 0 Fiamma/50 Fumo |
Combustibile - Materiali di classe 1 | ASTM-E-84 0 Fiamma/50 Fumo |
| Resistenza alla flessione | ASTM-D-790 2,630 psi |
| di tensione | ASTM-D-638 1,500 psi |
| Peso unitario (lbs./sq.ft. a ½”) | 4-6 libbre. |
| Forza d'impatto | ASTM-D-256 99.0 piedi libbre/pollice |
Applicazioni
Due to its extreme flexibility in design and function, it is also used extensively in applications not requiring a steel stud frame and is generally produced using one of the Premix processes. These applications include architectural ornamentation (column covers, cornices, window and door surrounds, etc.), terra cotta restoration and replacement, fireplace surrounds, concrete countertops, faux rocks and planters.
Vantaggio competitivo
• Altamente durevole e sicuro
• Design freedom since GFRC is able to be molded into almost any shape and color/texture
• Richiede una manutenzione molto bassa
• L'installazione è rapida ed economica
• Resistente agli agenti atmosferici e al fuoco
• Economico e più leggero del calcestruzzo prefabbricato
• Energia efficiente
