PRFV production generates
60% – 70% less CO2 than steel rebar
Mais forte
do que o aço
Economia de custos
Produção, Transporte, Instalação
Ecológico
Vida útil mais longa
Sustentável
Baixas emissões de CO2
O que são vergalhões GFRP?
Glass fiber reinforced polymer (PRFV) rebar is an alternative reinforcing bar to traditional steel rebar.
Unlike traditional steel rebar, which is made of carbon steel, PRFV rebar is composed of high-strength glass fibers embedded in a polymer resin matrix.
This material offers several advantages over steel rebar, including corrosion resistance, high strength-to-weight ratio, electromagnetic neutrality, and non-conductivity.
Non-corrosive
Mais forte que aço
Peso leve
Menos cobertura concreta necessária
Vida útil mais longa que o aço
How is GFRP Made?
Fibra
Vidro
Carbono
Resina
Polyester
Carbono
Epóxi
Propriedades e especificações de âncoras terrestres GFRP
Temporary PRFV ground anchors are 25% lighter than conventional steel strand anchors while exhibiting twice the strength. They can be installed using the same construction methods as their steel counterparts and maintain similar diameters and strand quantities.
Esses PRFV ground anchors possess safe working loads of up to 150 kilonewtons(kN) and are resistant to both acidic and alkali soil conditions.
Fácil remoção e risco mínimo
Crucially, temporary PRFV ground anchors can be easily cut and removed using empilhamento, excavation, and tunnel boring machines without the risk of damage or program delays.
Esse recurso oferece comodidade para incorporadores e empreiteiros, agilizando os processos de construção e minimizando possíveis contratempos ou atrasos no programa.
Using GFRP in Tunneling Projects
In tunneling, soft-eye applications refer to the use of PRFV (Polímero Reforçado com Fibra de Vidro) elements, such as bars or tendons, to reinforce and support the excavation face of a tunnel during construction. PRFV bars are typically installed in a radial pattern around the periphery of the tunnel face and anchored into the surrounding ground.
Additionally, PRFV bars are generally softer and less abrasive than steel reforço, making them easier to cut with tunnel boring machines (TBMs) equipped with cutting tools. This property reduces wear and tear on the TBM’s cutting tools, leading to lower maintenance costs and minimizing the risk of damage to the equipment.