Open Access Open Access  Restricted Access Subscription Access

Influence of Micro crack Healing Cycles on Viscoelastic Properties of Asphalt Concrete

Saad Issa Sarsam

Abstract


Asphalt concrete mixture exhibit decline in the flexibility through its service life. This could be attributed to the changes in the viscoelastic properties. However, micro crack healing may enhance part of the required flexibility. This paper investigates the influence of micro crack healing cycles on the viscoelastic properties of aged asphalt concrete. Slab samples were prepared using roller compaction, then; beam specimens will be extracted and subjected to long term ageing. The specimens are subjected to dynamic flexural stresses until reaching 50 % of its stiffness. The specimens have practiced a cycles of healing after each exposure to dynamic flexural stresses. It was observed that the flexural stiffness and the cumulative dissipated energy increases after each healing cycle. However, the phase angle, the fatigue life, and the permanent deformation decline after healing process. It was concluded that micro crack healing process can enhance the viscoelastic properties of aged asphalt concrete.


Full Text:

PDF

References


Sirin O., Paul D., Khan M., Darabi M., and Kassem E. Effect of Aging on Viscoelastic Properties of Asphalt Mixtures. Journal of Transportation Engineering 145(4). December 2019. DOI: 10.1061/JPEODX.0000137.

Xu G., Zhou Y., Zhu Y., Wang R., and Chen X. Effect of Weather Aging on Viscoelasticity and Fatigue Performance of Asphalt Mastic. MDPI Materials, 14, 6163.2021. https://doi.org/10.3390/ma14206163.

Jiang J., Ni F., Wu F., Sadek H., Lv Q. Evaluation of the healing potential of asphalt mixtures based on a modified semi-circular bending test, Constr. Build. Materials. 196. 2019. P. 284–294.

Lv Q., Huang W., Zheng M., Hao G., Yan C., Sun L. Investigating the asphalt binder/mastic bonding healing behavior using bitumen bonding strength test and X-ray Computed Tomography scan, Constr. Build. Mater. 257. 2020, 119504.

Sarsam S. I. and Mahdi M. S. Enhancing the Service Life of Aged Asphalt Concrete by Micro Crack Healing and Recycling. Proceedings, Sustainable infrastructures GEOMESAT-2019 International congress and exhibition 10-15 November, 2019, Cairo, Egypt.

Varma R., Balieu., R and Kringos N. Indices-Based Healing Quantification for Bituminous Materials. Journal of Materials in Civil Engineering.ASCE. Volume 33 Issue 11 - November 2021. https://doi.org/10.1061/(ASCE)MT.1943-5533.0003924.

Xiang H., Zhang W., Liu. P., He Z. Fatigue-healing performance evaluation of asphalt mixture using four-point bending test.Materials and Structures, Springer, Volume 53 Issue 3, 2020. DOI: 10.1617/s11527-020-01482-z

Sarsam S. I. Comparing the Influence of Micro Crack Healing Process on Asphalt Concrete Deformation under Repeated Stresses. Innovations in Civil Engineering and Management Volume 1 Issue 2, P. 1-11. CR Subscription., 2021.

Qiu J., van de Vena M., Wu S., Yu J., Molenaaret A. Investigating self-healing behavior of pure bitumen using dynamic shear rheometer. Fuel.Fuel.Elsevier. Volume 90, Issue 8, August 2011, Pages 2710-27202011. https://doi.org/10.1016/j.fuel.2011.03.016.

Ayar P. Moreno-Navarro F., Rubio-Gámez M. The healing capability of asphalt pavements: a state of the art review. Elsevier. J. Clean. Prod. Volume 113, 1 February 2016, Pages 28-40.


Refbacks

  • There are currently no refbacks.