Abstract:In order to study the physical properties of modified polychloromethane and SBS modified asphalt in repair of pavement cracks, these two materials are compared and analyzed by the fatigue test and impermeability test. The results show that these two materials of modified polychloromethane and SBS modified asphalt can all meet the performance requirements of pavement as the repairing materials of pavement cracks. The fatigue period of modified polychloromethane is shorter than SBS modified asphalt after the repair of pavement cracks, and the anti-fatigue performance of SBS modified asphalt material is stronger. For the impermeability, the impervious grade of two materials is same. The water pressure resistance and the water seepage pressure of modified polychloromethane material are larger than SBS modified asphalt material.