Investigation and Modification of Available Mechanistic–Empirical Procedures for Reflective Cracking in Asphalt Overlays of Concrete Pavements

2013 ◽  
Vol 2368 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Lev Khazanovich ◽  
Derek Tompkins ◽  
Rongzong Wu ◽  
John T. Harvey
Keyword(s):  
Concrete Pavements ◽  
Reflective Cracking ◽  
Asphalt Overlays

Research of Rigid Pavement on Structure Combination of HMA Overlays

2013 ◽  
Vol 477-478 ◽  
pp. 765-769
Author(s):  
Tao Liu ◽  
Guang Wei Hu ◽  
Ying Chun Gu
Keyword(s):  
Sandwich Structure ◽  
Hot Mix Asphalt ◽  
Reflective Cracking ◽  
Rigid Pavement ◽  
Asphalt Overlays ◽  
Long Term Performance ◽  
Term Performance

To study the influence of structure combination on performance of rigid pavement hot-mix asphalt (HMA) overlays, four Hot-mix asphalt overlays are prepared for the research at the base of long-term performance of experimental roads. The results indicate that the SMA +AC+SMA sandwich structure can effectively restrain reflective cracking and rut. In addition, the structure can reduce the thickness and cost of pavement.

Dynamic Response Analysis of Stress Intensity Factors of Reflective Cracking in Asphalt Overlay Suffer Wheel Load

2011 ◽  
Vol 217-218 ◽  
pp. 187-190
Author(s):  
Bin Yang ◽  
Qin Shou Huang ◽  
Xin Wang Qiu ◽  
Hua Xu
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Dynamic Loads ◽  
Response Analysis ◽  
Reflective Cracking ◽  
Intensity Factors ◽  
Wheel Load ◽  
Asphalt Overlay ◽  
Wheel Loading ◽  
Asphalt Overlays

Partial wheel loading of the existing old cement concrete pavement joint will easily causes shear-type reflective cracking of asphalt overlay, which will cut down the service life of the pavement. This paper conducts an research on the changing rules of stress intensity factors of reflective cracking in asphalt overlay suffer dynamic loads. Choose 3 asphalt overlays with typical reflective cracking extend length of 1cm, 4cm and 8cm to investigate the impacts of parametric variation of vehicle speed, asphalt overlays thickness and modulus and stress absorbing layer on stress intensity factors of reflective cracking in asphalt overlays suffer singe-wheel dynamic loads. Results show that time history curves of dynamic stress intensity factors declines with the increase of structure-layer parameters; the maximum amplitude decreases as time goes on; the larger the structure parameter is, the faster the degradation is; and the vibration levels to gentle in the later half period, but stress intensity factors are not equal to zero in the last period of vibration, which shows that there exists residual stress intensity factors.

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