Answering the question: «What is better — fiberglass or metal rebar?», We will dwell on the characteristics of composite products. In comparison, it becomes clear that nonmetallic reinforcement «MRG-Composites» wins at once on several indicators.
Fiberglass or composite rebar is 3-4 times lighter than metal products of the same diameter. This reduces logistics costs when delivering reinforcement to a building site, and also saves on loading and unloading.
For the rebqar of «MRG-Composites» is characterized by high tensile strength — 1200-1300 MPa. This index is 3-4 times stronger than the strength of a metal analog, therefore, a smaller reinforcement area of the structure is required. As a consequence, the diameter of the used reinforcement is reduced.
Fiberglass rebar after unrolling the coil becomes straight. Products with a diameter of 6-10 mm are packed in coils of 50-100 r.m., which reduces the over-expenditure of reinforcement when working with concrete products 6 m in length or more. Fiberglass rebar are the optimal reinforcing material for asphalt pavement, as rutting decreases during operation.
It is recommended to use composite rebar when building foundations, bridges, coast-protection structure. The products of «MRG-Composites» retain properties when interacting with water, therefore buildings may be in places close to the surface of groundwater.
The use of non-metallic rebar in concrete structures with large bending moments and increased requirements for crack opening implies an increase in reinforcement area. When designing, you need to increase the diameter of composite products or use a more frequent step of placing the rebar.
Unlike metal fittings, fiberglass products provide additional protection against temperature penetration. Due to low temperature conductivity, the composite material is used in the manufacture of flexible bonds in monolithic and other types of construction.
Cutting of fiberglass rebar is performed directly on the construction site with the help of a tool: from a hacksaw to a grinder with a disc for metal or ceramics.