Performance evaluation and technical requirement of sealant and filler in asphalt pavement

In order to evaluate the performance of hot-applied type sealant and filler in asphalt pavement, Chinese sealant and filler conditions and performance requirements were analyzed, five test methods on cone penetration, softening point, flow, resilience and tension at low temperature were respectively determined by reference of ASTM D5329, eleven samples of sealant and filler were tested, and five performance evaluation indices and their technical requirements were defined. Test result shows that the softening points of ten samples are over 80 ℃, the flow values of nine samples are under 5 mm, and only three samples pass three cycles with 50% extension in low-temperature tension test. So sealants and fillers used in China have good high-temperature performances, but have poor low-temperature characteristics.