Bridge concrete is a very durable material with exceptional properties and technical parameters. It is used for the construction of engineering structures resistant to external factors, such as bridges, viaducts, tunnels and overpasses. Find out what are the characteristics of bridge concrete and what are the advantages of using this composite in construction. How do concrete for bridges produce?
Currently, concrete is made of cement, aggregate, water and, importantly, appropriate additives and impurities. The one used to build bridges must also comply with the requirements of a complex working environment. For this reason, special mixtures of ingredients with a special accent for their quantity and quality are used for the manufacture of bridge concrete. It will be noted that the composition of the legislation is also extended to the composition of the material. For the production of concrete for bridges are used: Portland cements (resistant to sulfate corrosion),
Granite and basalt aggregates,
thinning and air -winning additives,
Grabbing of slowing additives (at high temperatures or prolonged transportation).
According to European standards, the minimum class of bridge concrete is from 30/37.
The most important requirements that concrete for bridges should comply with: compression strength of at least 30 MPa,
water -cement attitude - less than 0.5,
Water absorption Max. 5%
Frost resistance - min. F150,
water resistance min. AT 8.
The above technical parameters are necessary for the concrete for the design to be stable, including atmospheric factors (wind, rain, snow, sunlight, etc.),
cyclic temperature changes,
exposure to underground, surface water and ice,
Office salts
corrosion,
heavy burden
Bending and abrasion.
In the process of production of this type of concrete, individual requirements of the project are also taken into account, such as the specifics of construction work or the time of transportation of the mixture.
The use of bridge concrete gives many advantages, such as: high quality of the material,
the durability of structures from it (even in the most difficult conditions),
saving in terms of initial and operational costs,
easy consolidation of the material,
The ability to adapt concrete to the constructed design.
Using this type of composite for the construction of bridge structures, you can create functional structures with appropriate strength and aesthetics. Modern technologies of special concrete also increase the safety of the constructed structures. postakodlari.org