Abstract
Infrastructure has been aged and deteriorated by various causes. Maintenance of its safety and serviceability are crucial and many countries have raised concerns about the existing infrastructure. Infrastructure in Thailand has been also aged. This paper shows results of studies relating to maintenance of infrastructure in Thailand. Inspection of the existing infrastructure in Bangkok was conducted by both visual and non-destructive testing (NDT) showing many deteriorations, and damages. Most of the deteriorations are caused by low concrete covering depth and water leakage. While in marine environment, chloride attack is the main cause. Evaluation criteria for NDT results are studied and modified to be suitable for concrete used in Thailand. To predict the service life of structure, studies have also been conducted to evaluate the corrosion rate of reinforcing steel in reinforced concrete structures in different deterioration mechanisms and environmental conditions. Together with inspection results, service life of structure can be predicted, and maintenance can be well planned. The results of this study could raise awareness of the important of infrastructure maintenance in Thailand.
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