Kaplama tipinin betonarme donatısı korozyon performansına etkisinin araştırılması

In terms of concrete or pre-stressed concrete structures, steels are fixed into the concrete matrix alongside the service life of the structure. In fact, the true designed, impermeable, high quality concrete with sufficient thickness, makes steel reinforcement, which is covered by a special mineral coating chemically and physically protected from corrosion. Today, one of the most detrimental factors in assigning service life of concrete structures is corrosion. Corrosion of steel reinforcement causes a cross-sectional degradation in rebar structure and results in the reduction of ductility of the structural element. In this study, an alternative method to protect reinforcement bars from corrosion hazards in terms of inhibitors and rebar coating usage will be discussed. Mineral coating experiments on iron were performed. Three types of mineral coating were applied by shotcrete method on rebar, these materials are ground granulated blast furnace GGBS (25 percent and 50 percent), silica fume S.F are named as K2-K3-K1. Also, inhibitaion effect of dipotassium hydrogen phosphate on the reinforcement corrosion was investigated in experimental program. The aim of this study is to reduce the deterioration process of reinforcement in structures built on the coasts of the sea and to extend the service life of the reinforced concrete elements in terms of corrosion. The result is a reduction in the corrosion rate, depending on the type of mineral coatings. The use of inhibitors, in the concrete or mortar disrupted the concrete and mortar structure. However, the cure with additive sprayed on the steel bars showed resulted in a delay in corrosion onset.