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

This technical report summarizes the results of the trial pavement of 100% Hot In Place Asphalt Recycling (HIPER) for the first time in Korea. Through the trial pavement, the analysis of existing pavement samples, development of mixing design method, performance of new equipment system and characteristics of recycled mixture were checked. As a result of the pavement, it was confirmed that there was little change in the aggregates gradation before and after the application, and it was confirmed that 100% RAP recycling is possible without the need of inputting the new asphalt mixture for gradation correction. Also, the bonding between the lower layer and the recovered layer was excellent and the longitudinal joint treatment was also excellent. However, due to the inexperience of the equipment operator, the pre-heating showed a large variation in temperature in certain sections and regions. It will be necessary to supplement this and to have skilled workers.