[1] Wang Xiaowei, Gu Xingyu, Dong Qiao, Wu Jiangtao, et al. Effects of flat and elongated aggregateson the performance of porous asphalt mixture [J]. Journal of Southeast University (English Edition), 2018, 34 (1): 87-94. [doi:10.3969/j.issn.1003-7985.2018.01.013]

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Effects of flat and elongated aggregateson the performance of porous asphalt mixture()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

34

Issue:

2018 1

Page:

87-94

Research Field:

Traffic and Transportation Engineering

Publishing date:

2018-03-20

Info

Title:

Effects of flat and elongated aggregateson the performance of porous asphalt mixture

Author(s):

Wang Xiaowei;  Gu Xingyu;  Dong Qiao;  Wu Jiangtao

School of Transportation, Southeast University, Nanjing 210096, China

Keywords:

porous asphalt mixture;  flat and elongated aggregate;  skeleton stability;  durability;  permeability

PACS:

U416.217

DOI:

10.3969/j.issn.1003-7985.2018.01.013

Abstract:

Four flat and elongated(F&〓 E)contents(0%, original, 30%, and 40%)were investigated to evaluate the effects of F&〓 E particles on the performance of porous asphalt mixture(PA). Laboratory tests including volumetric determination, two-dimensional image analysis, Cantabro loss tests, breakdown tests, and permeability tests were conducted to evaluate the volumetric properties, the state of stone-on-stone contact, durability, skeleton stability and permeability of PA, respectively. The test results indicate that the F&〓 E content was a significant factor for total air voids, aggregate skeleton break down, and permeability. The functionality, rutting resistance, long-term durability, and skeleton stability decrease with the increase of F&〓 E content since F&〓 E aggregates in porous asphalt mixtures have a tendency to breakdown. Compared with traditional dense graded mixtures, PA is more sensitive to the F&〓 E content due to an open graded aggregate structure. Therefore, the stricter requirement for F&〓 E content should be met for porous asphalt mixtures than the one for traditional dense graded mixture.

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Memo

Memo:

Biographies: Wang Xiaowei(1990—), male, Ph.D. candidate; Gu Xingyu(corresponding author), male, doctor, associate professor, guxingyu1976@163.com.
Foundation items: Transportation Science and Technology Project of Jiangsu Province(No. 7621000115), Science and Technology Project of Nanjing Committee of Housing and Urban-Rural Development(No. ks1611).
Citation: Wang Xiaowei, Gu Xingyu, Dong Qiao, et al. Effects of flat and elongated aggregates on the performance of porous asphalt mixture[J].Journal of Southeast University(English Edition), 2018, 34(1):87-94.DOI:10.3969/j.issn.1003-7985.2018.01.013.

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