Kim, Jincheol (E-mail: jckim@hansuk.co.kr) Bae, Sungho (E-mail: shbae5781@daum.net) Lee, Jinho (E-mail: jhlee1@hansuk.co.kr) Yang, Jaebong (E-mail: jbyang@hansuk.co.kr) Kim, Jiwon (E-mail: aircraft1@paran.com) ABSTRACT PURPOSES : The purpose of this study was to break away from the workforce method using cold-mix asphalt mixtures and has a constant quality and has develop repair materials of pre-production asphalt-precast types. METHODS : The selection of the repair material was determined as the results obtained through physical properties of materials and the field applicability. In case of repair materials, values obtained through Marshall stability test & the dynamic stability test & retained stability test as well as the site conditions was considered. In case of adhesive, test results were obtained through examination of the bond strength(tensile, shear) and the field applicability of the adhesive was examined through combined specimens to simulate field applications. RESULTS : According to the results of laboratory tests, in the case of repair materials, Marshall stability and dynamic stability, retained stability of cold-mix reaction type asphalt mixture is the highest. In the case of adhesive, two-component epoxy-urea has a very high bonding strength(tensile, shear) was most excellent. According to the results of field tests, when epoxy-urea was excellent workability. Also, the repair body through actual mock-up test did not occur large deformation and fracture after 12 months. CONCLUSIONS : A suitable repair material is cold-mix reaction type mixture of asphalt-precast, a suitable adhesive is a two-component epoxy-urea. Keywords pothole, asphalt-precast, repair materials, adhesive Corresponding Author : Jinho Lee, Researcher Korea Petroleum Ind. Co. Ltd. R&D Center, 1936, Nambuk-daero, Yangseong-myeon, Anseong-si, Gyeonggi-do, 456-931, Korea Tel : +82-31-671-9511~4 Fax : +82-31-671-9515 E-mail : jhlee1@hansuk.co.kr International Journal of Highway Engineering http://www.ksre.or.kr/ ISSN 1738-7159 (print) ISSN 2287-3678 (Online) 21
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