Cracks Resisting Mechanism Analysis of Large Stone Mixture Base Based on Mechanics Calculations

Hong Zhi Li

doi:10.4028/www.scientific.net/AMR.723.729

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 723Cracks Resisting Mechanism Analysis of Large Stone...

Cracks Resisting Mechanism Analysis of Large Stone Mixture Base Based on Mechanics Calculations

Abstract:

In order to study the cracks resisting mechanism of large stone asphalt mixture base, a multi-layer elastic theory program was used to calculate the loading stress in different pavement structures. Then a Finite Element model was established based on a twinkling heat conduct hypothesis to calculate temperature stress and strain of pavement structure when temperature dropped. Finally, the stress and strain of all the structural layers was calculated considering the coupling effect of loading and temperature. It is found that temperature stress which is caused by temperate quick dropped is far more lager than loading stress cause by standard loading, while considering the co-effect of vehicle loading and temperature quickly dropped. Thus it is revealed that cracking in pavement is mainly caused by temperature quickly dropped. By contrast, it is found that pavement stress and strain caused by loading and temperature of the structure with asphalt macadam mixture (ATB30) base are less than that of the conventional semi-rigid pavement. Finally, an asphalt macadam mixture base applied in asphalt pavement structure is believed to be an efficient way in reducing asphalt pavement cracking.

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Periodical:

Advanced Materials Research (Volume 723)

Pages:

729-736

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.723.729

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Online since:

August 2013

Authors:

Hong Zhi Li

Keywords:

Cracks Resisting Mechanism, Finite Element, Large Stone Asphalt Macadam, Road Pavement

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References

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