Composite reinforcement — the solution to the problems of modern infrastructure projects
Currently, all over the world, concrete structures are more than ever exposed to corrosion processes. Not only has traffic increased on roads, bridges and viaducts, climate change has led to an increase in extreme weather events, including severe storms and heavy rains that cause flooding and other unforeseen events. Under such conditions, microcracks often form in the concrete, due to which moisture or water gets on the classical reinforcement, causing corrosion. This is especially important in corrosive environments such as salt water, which will oxidize steel on contact. It should be noted that if you are interested in composite reinforcement at a bargain price, we recommend visiting the site — https://nsk.uralarmaprom.ru/.
Therefore, an innovative approach to solving this problem is to replace traditional steel reinforcement with fiber reinforced polymers (FRP). It can be concluded that due to construction accidents around the world caused by corrosion of steel reinforcement, steel is no longer perceived as a viable solution for applications in harsh environments.
Although composite rebar is mainly made of glass fiber (GFRP or GRP), products using basalt (BFRP) or carbon fiber (CFRP) have also been developed and have been on the market for 30-40 years, only now large construction projects are demonstrating the use of composite rebar in as the main reinforcement used in the infrastructure.
Some companies already guarantee the geometric accuracy of the rods at the level of ±1%, and the glass fibers used guarantee increased corrosion resistance. Most manufacturers use an additional strand of glass to wrap the impregnated core of the composite rod.
This, of course, has its advantages and disadvantages. The use of milling provides better bonding of the concrete to the core, guaranteeing better strength, but it also cuts the strands of the roving fibers, reducing the strength of the composite core itself. Which solution is better can only be shown by comparative studies.