LAUSR

Due to the segregation of asphalt pavement, the damage of asphalt pavement always starts from locality. The viscosity of the 30# asphalt is always relative higher, which may cause more worries about the segregation of the 30# asphalt mixtures. During the construction of Jin-Hai highway in Fujian province of China, three test roads were constructed, two of them were constructed with the 30# low penetration asphalt and one with SBS modified asphalt. Other factors, such as different construction technologies, source of asphalt, sources of aggregates and types of bearing layers, may affect the segregation of asphalt pavement were also investigated. In addition, two calibration methods were investigated to ensure a better calibration method for the calibration of the pavement quality indicator (PQI). The results show that it is of great benefits to use PQI as an on-site monitoring during the construction of asphalt pavement, the Method 1 is recommended as the calibration method for the PQI. The 30# low penetration asphalt mixture has a good construction performance, the 5.5 cm thickness of 30# low penetration asphalt concrete will not appear some specific segregation situations by the trapezoid paving method.