تاثير تكربن البيتون على ديمومة بعض الجسور الطرقية الواقعة في المنطقة الساحلية السورية

Corrosion of reinforcement steel is considered one of the most common reasons for reinforcement concrete structures deterioration in Syrian Coastal region. The main cause of this could be the concrete carbonation, due to the Syrian Costal region climate conditions which allows a high rate of carbonation process. In this field research a study was done on the pillars of a number of bridges located between Tartous and Homs. The results show that these pillars suffer from a high rate of carbonation (with an average value of about 5.461mm/year0.5 for concrete permeability constant), together with clear deficiency in the concrete cover thickness of the reinforcement bars, which may have caused, or might cause in the future, corrosion to the steel bars. This, in turn, might develop cracks and spalling in concrete cover and damage of these bridges' structural safety in the long term.