www.www.buonovino.com

[inchak at tatasteel.com]

Dear Mr. Mukesh Upadhyay

This is a very valid doubt.

Whatever be the means to achieve improved corrosion resistance to rebars
embedded in concrete it boils down to formation of an adherent continuous
protective flim on the surface of the rebar. This is the underlying
principle of CRS rebars, galvanized rebars, epoxy coated rebars, stainless
steel rebars etc.

Presence of red oxide in cement does not lead to formation of any such
coating on the surface of rebar. Therefore, there should be no significant
difference in corrosion rate of any particular type of rebar it it is
embedded in ordinary cement or in a cement which contents some amount of
red oxide.

This can be easily tested in any laboratory and a conclusive evidence can
be arrived at. A competent member of this forum may like to take this up.







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