Methodology of Damage Detection and Weight in Motion Performance under Traffic Loading Based on Self-Sensing Concrete

In this study, the possibility of using sensors to determine the vehicle loads in the pavement simultaneously with the damage detection sensor activity, was investigated. In this research, the possibilities of using damage detection sensor as piezoresistive sensor was investigated simultaneously. With this sensor, in addition to health monitoring and propagation of cracks in their structures over the time, they were also used as a sensor to determine the vehicle load and counter cars. In order to simulate conditions of concrete sensor embedded in concrete pavement, a small concrete sensor was buried in concrete beam as an element of concrete pavement. In order to formulate the traffic load on the pavement, concrete beam was tested under different magnitudes of dynamic loads. The results showed that the maximum external load exerted on the sensor (Fmax) with a maximum response of the sensor (Smax) is related to the proportion of force-time curve slope (tgα) sensor response - time curve slope (tgβ). It also continues to evaluate the behavior of the sensor damage detection concrete sensor by loading in static regime up to failure. The results showed the point of failure, growth of crack propagation and separation of concrete beam were clearly shown by sensor response. Therefore, it can be concluded that use of damage detection sensor for piezoresistive application is possible and the sensor can evaluate the load with of high-precision formulation (R2adj.> 0.99).