Asphalt mixture low-temperature fracture evaluation method based on acoustic emission b-value Kalman filtering analysis

• Main Authors: ZHANG YAO, HAN XIAO, ZHANG LIDONG, JIAO YUBO, YANG HUA, XING JIAN
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses an asphalt mixture low-temperature fracture evaluation method based on acoustic emission b-value Kalman filtering analysis. According to the method, an acoustic emission signalgenerated in the low-temperature damage fracture process of the asphalt mixture is utilized; acoustic emission technical parameters are collected through acoustic emission equipment, an acoustic emission amplitude value and acoustic emission magnitude model is established, an acoustic emission parameter b value is determined, Kalman filtering analysis processing is carried out on the b value, andthe low-temperature fracture process of the asphalt mixture is evaluated according to the change rule of the b value. An acoustic emission b value is obtained through the relation between the acoustic emission amplitude value and the acoustic emission magnitude, Kalman filtering is conducted on the acoustic emission b value, the relation between the fracture process and the b value is established, and evaluation of the bi