In recent years, there have been applied methods for minimizing noise by adjusting the method of installing soundproof walls, soundproof tunnels, soundproofing rims, environmental facilities, etc., and the shape of the surface texture of tire treads and packaging materials for the purpose of reducing road noise. Low noise pavement methods such as rubber asphalt (CRM), open graded asphalt concrete (OGAC), permeable Friction Courses (PFC), open graded friction courses (OGFC) and porous asphalt have been applied to reduce road noise. Especially, porous pavement is the most widely used low noise pavement with porous structure, which can reduce noise and drain water through continuous void of pavement. On the other hand, porous asphalt pavement has problems such as reduction of noise reduction effect and difficulty of road surface management due to void closing and increase of construction cost. The purpose of this study is to develop ultra-thin layer hot mix asphalt pavement method which maximizes road noise reduction effect by surface micro voids (Recover asphalt pavement) to improve void clogging of present porous pavement method. For this study, maximum size 5mm aggregate and cationic-treated fiber reinforced asphalt modifier (CSM) were used. The Marshall design method was applied grain-size distribution curve was based on SMA mix design. Marshall test, TSR, MMLS3 test and Hamburg test were carried out to evaluate the mechanical properties of ultra -thin layered asphalt pavement method with surface micro voids. Also, the effect of road noise reduction was evaluated through field application in urban area.

Base on Korean design code, previous design code had not considered the effect of pavement on the orthotropic steel deck, however recent design code(Limit State Design Method, 2012) allowed to consider the effect of pavement on the orthotropic steel deck, and efforts to apply the stiffness of pavement to the deck continue. Meanwhile, research on the effect of ultra thin bridge deck overlay on the orthotropic steel deck is inadequate, previous study was limited in about fatigue stress and performance between pavement layer and the orthotropic steel deck. In this study, according to changing of pavement layer stiffness application, pavement materials, pavement thickness and steel deck thickness, analysis of shear stress. In addition to base on this result, consider effectiveness of ultra-thin pavement stiffness application on the orthotropic steel deck.

본 연구에서는 박층 포장용 다층(Multiple layer) 에폭시 폴리머 콘크리트의 적용 가능성을 검토하기 위하여 국내에서 개발된 에폭시수지에 대한 실내실험을 통해 물리적 특성 평가를 수행하였고, 시공성 및 초기 공용성 평가를 위한 시험시공을 수행하였다. 실내실험으로 강도 특성을 평가하기 위하여 압축강도, 휨강도, 인장강도, 부착강도 시험을 수행하였으며 내구 특성 평가를 위하여 염소이온침투시험, Thermal Compatibility 시험을 실시하였다. 압축강도 시험결과 40MPa 이상으로 ACI(American Concrete Institute)의 폴리머 콘크리트 기준값보다 큰 값을 나타냈으며 휨강도 시험결과는 20MPa 이상으로 기준을 만족하였다. 인장강도 시험결과 15MPa의 강도값과 60%이상의 신장율이 측정되었고, 콘크리트포장면과의 부착강도 시험결과는 2.2MPa 값을 나타내어 국제기준을 만족하는 것으로 확인되었다. 염분침투저항성 시험결과는 측정값이 0Coulomb으로 수밀성이 뛰어난 것으로 나타나 제설제 등의 염화물에 대한 저항성이 클 것으로 판단된다. Thermal compatibility 시험 후 콘크리트와 에폭시 포장층의 접착면을 살펴본 결과 균열이 발견되지 않아 콘크리트포장과 에폭시 포장층의 열팽창계수 차이로 인한 접착은 문제가 없을 것으로 판단된다. 현장 시험시공 결과 우수한 시공성과 초기 공용성을 나타내어 실용화 가능성을 확인하였다. 따라서 국내 토공부 포장과 교면포장 적용시 포장 공용성과 내구성이 크게 향상 될 것으로 기대된다.