Motivations and objectives
Fiber reinforced polymer (FRP) composites can be considered a new class of construction material when compared with classical materials such as steel, concrete, timber and masonry. The relatively recent and growing interest in FRP in the domain of structural engineering can be traced to its advantageous properties: a very high strength to weight ratio, electromagnetic neutrality, excellent fatigue behaviour, superior durability including corrosion resistance.
It’s important to underline that the current application of GFRP rebars is with straight bars”, while the use of GFRP rebars in precast tunnel segments requires “shaped bars” which form closed loops with bendings such as to adapt to the formwork that must also integrate with circular closed stirrups.
The innovation, as a matter of fact, of the present proposal, through the project Composke, is a new product and a new production technology.
The GFRP composite materials will be optimized in function of structural performance for appliance in a new field of applications (infrastructure and tunnel).
The expected performance/impact on defined needs are: by using of a new GFRP reinforcement it will be possible to save cost by using less concrete and guaranty longer life to the structure; main advantages are: no corrosion, lighter material, no conductivity. Even from environmental point of view this product can be considered as an environmental friendly material: it is well know that much less energy is needed, compared to steel and aluminium, to produce composite material.