Forstimangeorgi
Сarbon fibers and materials in construction
Reinforced concrete, the most popular building material of the 20th century, alas, has a short service life. However, a way to extend the life of such structures exists. This can be done with the building material carbon or carbon fiber.
The range of applications of this technology in construction is huge. It can be used to repair reinforced concrete floors, and strengthen the supports of numerous bridges and overpasses.
Since carbon fiber does not degrade in the aquatic environment, it can be used in the construction and maintenance of dams and underground utilities.
What is carbon (carbon fiber)? muuda
Carbon is a composite material where the filler is carbon fiber or fabric, and the binder (matrix) is a polymer (for example, epoxy resin), which hardens under certain conditions. Different polymers have different curing conditions: temperature increase, the presence of catalysts, special hardeners, etc.
Carbon plastics (or carbon, carbonoplastics, from the English carbon - carbon) are polymer composite materials from interwoven carbon fiber strands located in a matrix of polymer (e.g., epoxy) resins. Density - from 1450 kg / m³ to 2000 kg / m³
The fibers in carbon fiber are 5-10 microns and consist of chains of carbon atoms arranged in a crystal lattice. Bundles of such fibers have a very high tensile strength. Thus, the tensile strength of carbon fiber is four times higher than that of the best steel grades. At the same time, its density is four times less.
The use of carbon in construction muuda
Strengthening structures. One of the important directions of using carbon fiber reinforced plastic is when super-strong carbon fabric is fixed with the help of special glue on the surface of a beam, strut, etc. This provides an increase in the strength of the elements in the stretched zones and supporting sections in the zone of action of transverse forces, as well as compressed elements.
The structure glued with carbon fiber receives an additional 60% strength and up to 110% compressive strength.
Strengthening the strength of the structure reduces the size of the base. Carbon fiber holds significant loads, the most important thing is that there is where to stick it. Reducing the required material through the use of modern carbon fiber is an urgent measure for remote regions where it is difficult to deliver heavy building materials.
In construction, polymer composites are materials for the manufacture of cooling towers, containers for transporting and storing chemically active substances, pipelines for various purposes, structural elements of bridges, railings on roads, swimming pools, mobile homes, exhibition halls and much more.
Many are aware of precast corrosion caused by steel reinforcement. When using carbon fiber mesh instead of steel reinforcement, the results are excellent:
- Concrete wall panels can be made much thinner.
- The weight of the panels becomes much lighter (up to 75%).
- Additional thermal insulation is not required because carbon fiber does not conduct heat or cold.
- It has high fire resistance.
- This new material is already being used for the production of wall sandwich panels.
Carbon fiber also has disadvantages that must be taken into account when planning its use.
This material is quite expensive compared to peers.
The material has the ability to reflect electric waves, which may be a disadvantage in some cases.
The process of manufacturing composites is more time-consuming than the manufacture of metal.
However, with the development of high technologies, the current drawbacks of carbon fiber reinforced plastics (carbon fiber, in particular) will gradually be leveled by the ever-increasing advantages of these materials. And this gives a serious reserve for their widespread use in construction.
*In 2020, Carbon version 2.0 [1]was introduced, which is 4 times cheaper and 1.25 times stronger. Carbon 2.0 plans to enter the international market for 2030.
Lingid muuda
- ↑ [/https://www.wardsauto.com/technology/ford-focused-carbon-fiber-cut-body-panel-weight Carbon version 2.0]
https://www.architectmagazine.com/practice/is-carbon-fiber-all-it-cracked-up-to-be_o
https://www.structuraltechnologies.com/strengthening/