The Deterioration Inspections and Performance Evaluations of Load Capacity of the Expressway Structure

Abstract

This research aims to study about the guideline for the deterioration inspections and the performance evaluations of the load capacity elevated structure to resisting the traffic load on expressway. At present, there are 8 routes with 224.60 kilometers under the operated by the Expressway Authority of Thailand (EXAT). The service life time from the past to the present of the expressway structure was in ranges 7 - 42 years that was a significant to inspected deterioration of the concrete structure. In the process was considered the performance evaluations of the elevated structure expressway and the level of damage from the concrete cracking. The inspections and evaluations can be protected and decreased the level of damage on the structure when it was resisting the traffic load efficiently and it made more safely in the service to the road users. In addition, this process guide line can be used for monitoring and preventing the elevated structure collapse from structural deterioration which is the cause of damage that occurred. These causes of damage affect on properties and risk of life. This case study is about to inspect the level of damage concrete cracking and evaluating the performance of the elevated structure in each elements by used the Non-Destructive Testing. In the results will be use for planning the strengthening and repairing the elevated structure of the expressway efficiently service. It will be made the elevated structure to be stable and more long service life time.