CORROSION BEHAVIOR OF ZINC COATED STEEL REBAR IN HIGH-STRENGTH REINFORCED CONCRETE

A large number of reinforced concrete structures subjected to chloride ions. Two basicapproaches for preventing corrosion of reinforcing steel embedded in concrete are: Increasing theconsolidation of concrete and using different coating on rebars. In present research steel rebarsare coated in different ways: a) ۴۰ µm of zinc electroplated on steel rebar b) Zinc powder withepoxy paste (zinc rich). The rebars were placed in a macrocell design according to ASTM G۱۰۹-۹۲. Concrete operations were done with mixture designs of high and normal strength concrete.The results show corrosion decrease of zinc coated rebars.

کلیدواژه ها:

High strength concrete ، Normal strength concrete ، Rebar corrosion ، Zinc coating.