Next Article in Journal
Band to Band Tunneling at the Zinc Oxide (ZnO) and Lead Selenide (PbSe) Quantum Dot Contact; Interfacial Charge Transfer at a ZnO/PbSe/ZnO Probe Device
Next Article in Special Issue
Effect of Carbonation on Abrasion Resistance of Alkali-Activated Slag with Various Activators
Previous Article in Journal
Prediction of Crack Formation for Cross Wedge Rolling of Harrow Tooth Preform
Previous Article in Special Issue
Effect of Graphene Oxide on the Crystallization of Calcium Carbonate by C3S Carbonation
Open AccessArticle

Fractal Analysis of the Fracture Evolution of Freeze-Thaw Damage to Asphalt Concrete

by 1, 2,*, 3, 4 and 1
1
School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
2
School of Transportation Engineering, Shenyang Jianzhu University, Shenyang 110168, China
3
College of Architecture and Transportation, Liaoning Technical University, Fuxin 123000, China
4
BIM (Building Information Modeling) Research Center, Shenyang Jianzhu University, Shenyang 110168, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(14), 2288; https://doi.org/10.3390/ma12142288
Received: 2 July 2019 / Revised: 13 July 2019 / Accepted: 14 July 2019 / Published: 17 July 2019
(This article belongs to the Special Issue Microstructures and Durability of Cement-Based Materials)
AC (asphalt concrete)-13, as the main material used in pavement construction, has been applied widely in seasonal frozen areas. In order to understand the fracture mechanism in the freeze-thaw (F-T) damage process, the mesoscale structure of AC-13 is obtained by computed tomography (CT). The fractal dimension of cracks is used as a damage evaluation index. Most previous studies have only focused on the fractal dimensions of whole cracks, while ignoring the fractal tectonic process and the self-similarity degree of a single fracture. Therefore, in this study, the intrinsic mechanism of fractures and damage were investigated. In addition, the critical crack stress and fracture toughness models of a single fracture in a freeze-thaw damage process are established for AC-13. The results indicate that in terms of the critical crack stress and fracture toughness, with the increase of F-T times, there is an obvious decreasing trend. The fracture model can effectively describe the fracture toughness calculated by ABAQUS in the process of freeze-thaw cycles. View Full-Text
Keywords: freeze-thaw damage; computed tomography; fracture toughness; fractal dimension freeze-thaw damage; computed tomography; fracture toughness; fractal dimension
Show Figures

Figure 1

MDPI and ACS Style

Li, J.; Wang, F.; Yi, F.; Ma, J.; Lin, Z. Fractal Analysis of the Fracture Evolution of Freeze-Thaw Damage to Asphalt Concrete. Materials 2019, 12, 2288.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop