Abstract:In order to reduce or delay the initiation and expansion of reflective cracks in semi-rigid base of urban roads, the pavement performance of rubber asphalt stress absorption layer is studied through laboratory tests. And its anti-cracking effect as a semi-rigid foundation anti-cracking measure is analyzed. Combined with the field test section of newly built urban road engineering, its construction technologies and construction quality control essentials are summarized. The quality of field construction is improved, and the long-term use effect of field test section is tracked and observed. The results show that after paving the rubber asphalt stress absorption layer, the fatigue, shearing, drawing and low-temperature crack resistance performance of the pavement are greatly improved. The pavement has no reflective cracks after a longer period of use. It can better prevent or delay the generation and expansion of reflection cracks.
