Fibre-reinforced plastic rebar is a rather new work material that has entered the market quite recently; therefore, builders still have not duly appreciated the benefit the usage of such material could provide. This benefit lies in the fact that initial price of fibre-reinforced plastic rebar is lower as compared with the metal one, that its delivery and assembly is less complicated, and that the project can be reassessed to the better performance. To give you an example we will calculate and compare the expenses associated with purchasing 1 ton of metal rebar with diameter 12 mm with the expenses that arise if we replace it with an equally efficient fibre-reinforced plastic rebar with diameter 8 mm.
Price of rebar
Let’s consider that conditional price of 1 ton of 12mm metal rebar is 27 thousand roubles, which gives us 1125 lineal meters of rebar. If we replace it with fibre-reinforced plastic rebar, we will need only 90 kilograms of composite construction material with diameter 8 mm in coils, 100 meters of rebar in each coil that weighs only 8 kilograms. In the latter case you will spend 18470 roubles. Your interest will amount to 31,5%! However this is not the only way you can reduce your expenses if you decide to use fibre-reinforced plastic rebar.
To deliver 1–1.5 tons of metal rebar, you need a GAZelle vehicle. Fibre-reinforced plastic rebar of the same length can be transported by any motor car in one piece up to 100 m long! If you buy more than 2 tons of metal rebar, you will definitely need a truck.
Ordering KAMAZ for transportation, you will spend at least 7-10 thousand roubles in contrast to the equivalent of fibre-reinforced plastic rebar delivered by a motor car (up to 1.5 km of 12 mm A-III equivalent) or by GAZelle (up to 20 km of 12 mm A-III equivalent)! As for unloading, it should be noted that some objects cannot be reached by a truck, some objects have no electric current to cut iron rods of rebar with an angle grinder. While using FRP rebar produced by Yarcompozit LLC, any worker can easily carry a 100-meter coil of 12 mm A-III metal rebar equivalent.
As soon as you untie a 100-meter coil of FRP rebar it will immediately tend to straighten to a straight bar. Attention: rebar of big diameters can forcefully whip off the workers! The rebar can be cut with cutter pliers, pyrocutters or angle grinder (above 12 mm), completely avoiding off-cuts at that. You will not need to make precise calculations concerning optima distribution of metal bars to use all the off-cuts – with FRP rebar such problems do not occur at all!
The rebar can be tied-in using plastic clamps or wire in any other place (under shelter in rainy weather), and the grids ready for laying can be brought up to the place of laying. Another advantage of FRP rebar is that you do not need to worry about anti-corrosion treatment, you will never face such problems while using FRP rebar. Cutting, distribution, tying, and laying of FRP rebar takes 1.5–2 times less men hours as compared with metal rebar!
For the sake of simplicity, FRP rebar produced by Yarcompozit LLC is layed at the same spacing as metal rebar. E.g. in 20×20 cm cells. However, if you make a project anew or have a possibility to re-estimate it for FRP rebar with improved parameters as compared to metal rebar, you can have a larger spacing of FRP rebar for the same structures (footing, road, pier or reinforced waterside). It is possible due to tensile strength margin even in case of replacement for the smaller diameter. Due to this fact you can save up to 7 % more!
Besides, you can also economize on concrete cover to reinforcement. This layer is necessary for decreasing humidity near the reinforcement grid, however, due to the fact that FRP rebar does not corrode, you do not need such a layer!
Let us summarize the main advantages:
- Price reduction by 20-60%.
- 10 times lighter weight.
- Tensile strength index is 3.5 times better.
- FRP rebar does not rust, it is not sensitive to alkalis and acids (concrete is an alkaline environment).
- FRP rebar is not electrically conductive, not magnetizable, it is radiotransparent.
- FRP rebar is high-elastic => earthquake-resistant.
- FRP rebar is ten times more wearproof than metal.
- Shipping is up to 20 times less expensive and more convenient.
- The material is environmentally friendly.
- FRP rebar is not thermoconductive.