Permanent Deformation Monitoring and Remaining Life Prediction of Asphalt Pavement Combining Full-Scale Accelerated Pavement Testing and FEM

Abstract

Permanent deformation (rutting) is one of the typical failure modes of asphalt pavement with a semirigid base in high-temperature areas. To address issues of pavement structure deformation and remaining life prediction, a method of combining accelerated pavement testing and finite element (FE) simulation was proposed. A modified Burgers model considering creep parameter damage was obtained using strain monitoring data and laboratory test values, which was performed in the FE model to analyze rutting development. The results showed that high temperature and heavy axle loads greatly influenced rutting development: the tested road was loaded 360,000 times at high temperature, contributing 50% to accumulated rutting; rutting increased by 90.7% under the condition of 50% overload under high-temperature seasons from the simulated results. Then, the ratio of the bulge area to the depression area (KR) was proposed to define the rutting deformation mechanism. The KR analysis results illustrated that rutting development was a transition process from compaction rutting to flow rutting. Finally, the relationship between the action times of axle load in the tested and in-service roads was established based on the rutting equivalence principle. When the action times of axle load reach approximately 25 million times (insufficient remaining life) for the investigated Hu-Ning highway, necessary maintenance measures should be taken to treat rutting deformation.

Assessment of Pavement Structural Conditions and Remaining Life Combining Accelerated Pavement Testing and Ground-Penetrating Radar

“…where α T denotes the displacement factor, T denotes the test temperature, C 1 and C 2 represent the fitted parameters, and T s denotes the reference temperature [42,43].…”

Compaction Characteristics of a Foam Asphalt Hot In-Place Recycling Asphalt Mixture

“…which includes the dynamic stability of the asphalt mixture (cycles/mm); the deformation at time (mm) [48]; the deformation at time (mm); the instrument type parameter, taken as 1.0; and the specimen coefficient, taken as 1.0; and N is the reciprocal rolling speed of the test wheel, 42 cycles/min.…”

Study on measurement and simulation of noise field between long tunnel and underground interchange

“…However, compared with the rapid development of comprehensive transportation, urban transportation has become a weak link in urban development. Not only do problems such as road congestion, crowded subways, slow buses, and disorderly parking seriously restrict the efficiency of urban operation, but high traffic pollution also affects the improvement of living environment and quality [7,[10][11][12] . In the past, traffic pollution mainly referred to smoke and harmful gases emitted by vehicles, but in recent years, traffic noise pollution has received increasing attention.…”