Method for determining optimal asphalt dosage of bonding layer based on performance requirements

• Main Authors: CHEN JIANGCAI, WEI DI, HUANG XIAOFENG, YAN ZENAN, XIE CHENG, ZHOU HUAIDE
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for determining the optimal asphalt dosage of a bonding layer based on performance requirements, and belongs to the technical field of road engineering.The method comprises the following steps that firstly, a pavement structure test piece needing to be tested is formed, and the test piece is subjected to a straight-torsional shear test and a dynamic stability test; according to the test, a curve of the shear strength of the test piece along with the change of the amount of the asphalt in the bonding layer and a curve of the dynamic stability along with the change of the amount of the asphalt in the bonding layer are respectively obtained; and the optimal asphalt dosage of the bonding layer, which can meet the interlayer mechanical shear performance and the high-temperature pavement performance, is obtained. The interlayer shear resistance is evaluated through the direct-torsional shear test combining the direct shear test and the torsional shear test, and compared with a conven