Abstract
In order to accurately evaluate the bearing capacity of the structural layer of old concrete pavement with semi-rigid bases and flexible soil bases after crushing and provide accurate design parameters for the reconstruction of old cement concrete pavement, this paper adopted the bearing plate and Beckman beam to compare the equivalent resilience modulus and bending of the top surface of the structural layer of old cement concrete pavement after crushing. The results show that the average equivalent resilience modulus of the top surface of the old concrete pavement with semi-rigid bases after resonance crushing is 444.20 MPa, and that of the top surface after multi-hammer crushing is 408.15 MPa. The average equivalent resilience modulus of the top surface of the old concrete pavement with soil bases after resonance crushing is 326.71 MPa, and the representative value of deflection is 329.68 (0.01mm). The variation coefficient of deflection is 88.02%. The structural layer stiffness of the old concrete pavement with semi-rigid bases after crushing is suitable for the asphalt pavement structure with flexibility. The structural layer of the old concrete pavement with soil bases after resonance crushing is only equivalent to the heterogeneous graded gravel layer, and the asphalt layer should be added after the structure reinforcement.
Publication Date
11-24-2023
DOI
10.14048/j.issn.1671-2579.2023.05.006
First Page
33
Last Page
36
Submission Date
March 2025
Recommended Citation
Aijun, YUE; Wei, WANG; Wangming, LI; and Jinshou, TAN
(2023)
"Test and evaluation of bearing capacity of crushed layer of old concrete pavement,"
Journal of China & Foreign Highway: Vol. 43:
Iss.
5, Article 6.
DOI: 10.14048/j.issn.1671-2579.2023.05.006
Available at:
https://zwgl1980.csust.edu.cn/journal/vol43/iss5/6
Reference
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