Corrosion of reinforced concrete foundation steel bar for sodium nitrite

Corrosion of reinforced concrete foundation steel bar for sodium nitrite

Sodium nitrite is the most common steel rust inhibitor product, which is better than other kinds of steel rust inhibitors in rust removal and rust inhibition. The mechanical damage caused by insufficient durability of reinforced steel foundations in reinforced concrete buildings often requires major repairs, demolition, or reinforcement. The steel bars may even rust and collapse, resulting in casualties or property damage.

Reinforced concrete buildings will continue to be eroded by the external environment after being formed, and the chloride ions will damage, crack, and flake the concrete protective layer, so that the reinforced steel under the protection of 硂 will leak out and produce rust, which will affect the reinforced concrete structure Durability and service life.

The use of sodium nitrite for the rust prevention and derusting measures of basic steel bars includes the following steps: 1. Prevent chloride ions from corroding the steel bars in the concrete. In the configuration of the raw materials of the concrete, add chloride and calcium nitrite to control the chlorine content and prevent the steel bars Corrosion; 2. Use calcium nitrite for concrete surface treatment, there are always voids in the hardened concrete, which provides an erosion path for the medium that is easy to cause steel corrosion in the environment, it is necessary to drain the water in the surface of the concrete, use calcium nitrite surface Coating; 3. In the course of using the building, inspect the building damage occasionally, and repair and protect it in time.

Corrosion of steel bars has always been a problem in the construction industry. The durability of reinforced concrete structures has always been a major concern in the construction industry. Corrosion of steel bars is the most likely factor that affects durability and safety. Calcium nitrite is today's response to corrosion of steel bars. The main measures and means, and will only be more widely used in the future period.