The early deterioration of concrete structures has become a strong global issues over the past 30 years. Because the reinforcement corrosion in steel with an estimated cost for repairs more than 550 billion dollars.
Why use stainless steel bars for reinforcing steel?
What are the structures involved in the aforementioned deterioration? Especially those located in harsh marine environments or on road bridges where salt is poured out anti-ice during the winter months. When the steel corrosion started? When salt chloride ions (e.g. sodium chloride) penetrate through the cement reaching the reinforcing steel attached to the contact. Today, in Europe and North America, the stainless steel (than carbon) is still used in the design of highways. Because of its high resistance to chloride ions. Stainless steel reinforcing bars are produced according to British, American and North European standards.
What are the utilities of stainless steel?
What are the benefits of using the stainless steel reinforcing? As:
- increased durability
- reduction of costs of repair and maintenance
- shorter interruption in service and maintenance costs
- reduction in the thickness of the reinforcement covering
- increased tolerance of 50% (up to 0,3mm) in width of cracks
- ability to delete sealers for concrete
An economic point of view
Stainless steel can be used together with carbon steel. It is often minimally used in the implementation of the reinforcing steel. In order to obtain a significant increase in durability, without any galvanic phenomena. Stainless steel is a material that is convenient if used:
- in elements of structures with a high risk of corrosion
- where the repairs would be difficult or expensive
What are the applications of these reinforcing steel?
Stainless steel reinforcing steel may have different applications such as:
- expressway bridges or river bridges
- highway underpasses and galleries
- breakwaters, wharves and marine guards
- coastal structures
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