Study on Expected Fatigue Loading Cycles for Accelerated Loading Test of Asphalt Pavement Structure

DOI

10.2991/978-94-6463-516-4_24How to use a DOI?

Keywords

ARA; Accelerated Loading; Expected Loading Cycles

Abstract

Accelerated loading test is a common method to study the performance of asphalt pavement, in the process of previous research, there is no conclusion yet on the design of the loading times plan before the test is carried out. For this study proposes a method for determining the expected number of loading cycles in the preliminary stage of accelerated loading tests, aiming to provide references for the rational formulation of accelerated loading test schemes. Considering accelerated loading tests as a special service condition for typical pavement structures, the differences between loading conditions and general actual service conditions are taken into account. Based on the current design specifications for asphalt pavement structures in China, considering differences in axle load, loading rate, lateral distribution of wheel tracks, temperature, reliability, and other states, the correspondence between loading states and actual service states is achieved. On this basis, a method for determining the expected fatigue loading cycles is provided. Results: The expected loading cycles are calculated for outdoor and indoor loading conditions based on measured traffic parameters or structural design life. Under conditions of a loading rate of 8 km/h and a half-axle load of 80 kN, the calculated results are as follows: for outdoor loading, the expected loading cycles are approximately 198,000 based on measured parameters and approximately 10.74 million based on structural design life; for indoor loading, the expected loading cycles are approximately 192,000 based on measured parameters and approximately 10.40 million based on structural design life. The expected loading cycles are of great significance for designing accelerated loading tests and improving test results. On the one hand, they are closely related to the duration and cost of the tests; on the other hand, the difference between expected and actual loading cycles provides the basis for further refining the data of the pavement performance degradation model. This provides a reference for the design of accelerated loading tests for asphalt pavements.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Shujuan Wang
AU  - Zhiguo Chen
AU  - Weijun Qin
AU  - Ziqi An
AU  - Ruoting Shen
PY  - 2024
DA  - 2024/09/17
TI  - Study on Expected Fatigue Loading Cycles for Accelerated Loading Test of Asphalt Pavement Structure
BT  - Proceedings of the 2024 5th International Conference on Urban Construction and Management Engineering (ICUCME 2024)
PB  - Atlantis Press
SP  - 203
EP  - 215
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-516-4_24
DO  - 10.2991/978-94-6463-516-4_24
ID  - Wang2024
ER  -