DIAGNOSIS AND ANALYSIS OF OLD CONCRETE STRUCTURES IN COASTAL ENVIRONMENT: FIELD INVESTIGATIONS, ANALYSIS & RECOMMENDATIONS

V L Satish, Dr V Ravindra

Abstract


Deterioration of reinforced concrete structures results from external factors or internal causes within the concrete itself. Recently the aspects of concrete durability and performance have become a major subject of discussion especially when the concrete is subjected to severe environment. The findings of various studies earlier carried out on durability with respect to coastal structures are discussed in this paper. The NDT studies conducted on some old buildings at Sriharikota Island are analyzed and the major factor contributing to the deterioration of structures is presented. Chloride induced Corrosion is found to be main factor affecting both the concrete durability and strength. Recommendations for delaying the onset of corrosion in RCC structures in coastal structures are suggested. Corrosion inhibitors admixed in concrete are found to be possible solution for new structures.    


Keywords


Durability, coastal environment, NDT studies, Corrosion, Chloride profiles, Chloride induced corrosion, corrosion inhibitors

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References


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