How to protect exposed reinforcement bars from rusting?/ Different ways to protect exposed rebar's from corrosion in construction.

 After the construction of residential buildings, the column bars above the roof slab are extended for providing lap length for future construction.

Usually, the parapet wall is built & an RCC column is constructed to cover the exposed bars. It is OK if you are not going to raise the building in the future.

But, if you have a plan to build the 1st floor in the near future, the following are some of the ways to protect the exposed rebars.

1. Anti-corrosive treatment: 

A wide range of anti-corrosive inhibitors is available in the market to protect the rebars from rusting. The treated rebars are protected for a period of 1 to 2 years from rusting. If you are planning to extend the building within 2 years of time, anti-corrosive treatment is the best solution.

If you are living in a coastal area, go for polymer-based coatings to get rid of the corrosion from atmospheric salts. 

2. Pipe protection:

Use a PVC pipe of the required size to slide over the exposed rebars. You have to seal the top & bottom end of the pipe with insulation or packaging tapes. PVC end cap at the top will also do the trick to protect the rebar.

You can choose any type of plastic pipe like PVC, UPVC, HDPE, or electrical pipes to do the protection job. 

 Those pipes can be reused for future plumbing or electrical work in the constructed building.

3. Lean concrete:

Construct the column by using lean concrete of M7.5 (1:4:8) or M10 (1:3:6) grade. At the time of construction, you can break those columns effortlessly to expose the reinforcements.

The advantage of using lean concrete is,

1. You will save in your budget, as you utilize less volume of cement.

2. You can dismantle those columns by chiseling or by concrete breakers in a lesser time. This saves labor & machine cost.

3. Protect the slab surface from damage & cracking, as we use less force to break the column concrete.

4. The broken concrete material can be recycled in the filling, plinth protection, or any such low-profile works.

For all such articles over useful tips, click here.

Thank you for going through this article❤. Have a good day 😄.

   

Share: