Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

When calculating the damage index of drainable asphalt pavement, since the pavement damage index is calculated by converting FWD deflection to the reference temperature, the representative temperature of the drainable asphalt section tested by FWD must be determined and the deflection value must be corrected with the reference temperature. Therefore, in order to temperature-corrected the deflection data of the FWD test to evaluate the durability of the drainable pavement for maintenance technology, the appropriateness of the existed representative temperature estimation methods was studied. In the case of Japanese method, it was found that it was difficult to obtain accurate temperature prediction results because the standard of the four seasons was different from that of Korea.Also, compared to the 1/2 point representative temperature method of the NC method, the BELLS temperature estimation value of the 1/3 point representative temperature method of the AI ​​method is calculated to be larger, so it is a safety when predicting pavement damage. Also, as a result of analyzing various BELLS equations with the actual measured values ​​at different times and at different depths for the domestic applicability , BELLS 3 was predicted similar to or larger than the actual measurement result. Therefore, in this study, at the thickness of 1/3 point of drainable pavement, BELLS 3 method was proposed for the estimation of the representative temperature on the drainable asphalt pavemnet.