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Appl. Sci. 2017, 7(8), 800; doi:10.3390/app7080800

Research on Performance of a Dense Graded Ultra-Thin Wearing Course Mixture

1
Jiangsu Sinoroad Engineering Research Institute Co. LTD., 19 Lanhua Road, Nanjing 211800, China
2
School of Transportation, Southeast University, 2 Sipailou, Nanjing 210096, China
3
State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, China
*
Author to whom correspondence should be addressed.
Received: 7 July 2017 / Revised: 31 July 2017 / Accepted: 2 August 2017 / Published: 7 August 2017
(This article belongs to the Special Issue Advanced Asphalt Materials and Paving Technologies)

Abstract

This paper focused on the design and performance characterization of a modified ultra-thin wearing course mixture (M-UWM). A dense graded ultra-thin wearing course mixture with nominal maximum aggregate size of 10 mm was designed and named as UWM10. A multi-chain polyolefin modifier was used to modify the performance of UWM10 to get M-UWM10. Based on different laboratory performance tests including wheel tracking tests, low-temperature bending beam tests, immersion Marshall tests and freeze-thaw splitting tests, the high temperature rutting resistance, low-temperature cracking resistance and moisture resistance of the designed M-UWM10 were evaluated. The texture depth tests and wheel tracking tests were combined to characterize the degradation behaviour of the surface texture depth of M-UWM10. Based on test roads, the bonding conditions between the wearing course layer that consisted of M-UWM10 and its sublayer were evaluated by computed tomography (CT) scanning test and pull out test. Filed texture depth tests were also conducted on the test roads. It is proved that the designed wearing course mixture M-UWM10 shows excellent pavement performance as well as better wearing resistance and interlayer bonding than the traditional wearing course mixture. View Full-Text
Keywords: ultra-thin wearing course; road performance; texture depth; interlayer bonding ultra-thin wearing course; road performance; texture depth; interlayer bonding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Geng, L.; Ma, T.; Zhang, J.; Huang, X.; Hu, P. Research on Performance of a Dense Graded Ultra-Thin Wearing Course Mixture. Appl. Sci. 2017, 7, 800.

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