Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks

Junhui Zhang; Jue Li; Yongsheng Yao; Jianlong Zheng; Fan Gu

doi:10.1016/j.conbuildmat.2018.06.188

Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks

Junhui Zhang
, Jue Li^*
, Yongsheng Yao
, Jianlong Zheng
, Fan Gu

^*Corresponding author for this work

Changsha University of Science and Technology

Research output: Contribution to journal › Article › peer-review

70 Citations (SciVal)

Abstract

To reveal the meso-mechanical mechanism of shear behaviors in the graded crushed rocks (GCRs), which are heterogeneous in geometry and widely used in the flexible pavement, a numerical technique was proposed to simulate the geometric anisotropy of the GCRs using randomly generated models. Then, studies on meso-mechanical responses during the loading were performed through the biaxial shear test and California bearing ratio (CBR) test. The results showed that the changes of both friction and anisotropy had a similar trend with the particle size enlarging in the dense assembly, which maintain stable when the size is less than 3.0 mm. In addition, the breaking sieve (BS) between coarse and fine aggregates was six times of the base diameter (0.8 mm). The predicted shear properties in macrostructure were in good agreement with those laboratory measurements. For the shear behaviors, the fractures and force chains were mainly distributed in the area of action that was limited by force size and side boundary.

Original language	English
Pages (from-to)	346-355
Number of pages	10
Journal	Construction and Building Materials
Volume	183
Early online date	7 Jul 2018
DOIs	https://doi.org/10.1016/j.conbuildmat.2018.06.188
Publication status	Published - 20 Sept 2018

Funding

The authors gratefully acknowledge the National Key Research and Development Program of China ( 2017YFC0805307 ), National Natural Science Foundation of China ( 51478054 ), Excellent Youth Foundation of Natural Science Foundation of Hunan Province (2018JJ1026), Key Project of Education Department of Hunan Province (17A008), Jiangxi Communications Department Program (2013C0011). And it was supported by the Open Research Fund of Science and Technology Innovation Platform of State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology (kfj150103).

Keywords

Biaxial shear test
California bearing ratio
Discrete element method
Geometric anisotropy
Graded crushed rocks
Shear behavior

Access to Document

10.1016/j.conbuildmat.2018.06.188

Cite this

@article{5ea61929564b4d91a6a776c77a956b48,

title = "Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks",

abstract = "To reveal the meso-mechanical mechanism of shear behaviors in the graded crushed rocks (GCRs), which are heterogeneous in geometry and widely used in the flexible pavement, a numerical technique was proposed to simulate the geometric anisotropy of the GCRs using randomly generated models. Then, studies on meso-mechanical responses during the loading were performed through the biaxial shear test and California bearing ratio (CBR) test. The results showed that the changes of both friction and anisotropy had a similar trend with the particle size enlarging in the dense assembly, which maintain stable when the size is less than 3.0 mm. In addition, the breaking sieve (BS) between coarse and fine aggregates was six times of the base diameter (0.8 mm). The predicted shear properties in macrostructure were in good agreement with those laboratory measurements. For the shear behaviors, the fractures and force chains were mainly distributed in the area of action that was limited by force size and side boundary.",

keywords = "Biaxial shear test, California bearing ratio, Discrete element method, Geometric anisotropy, Graded crushed rocks, Shear behavior",

author = "Junhui Zhang and Jue Li and Yongsheng Yao and Jianlong Zheng and Fan Gu",

year = "2018",

month = sep,

day = "20",

doi = "10.1016/j.conbuildmat.2018.06.188",

language = "English",

volume = "183",

pages = "346--355",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier",

}

TY - JOUR

T1 - Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks

AU - Zhang, Junhui

AU - Li, Jue

AU - Yao, Yongsheng

AU - Zheng, Jianlong

AU - Gu, Fan

PY - 2018/9/20

Y1 - 2018/9/20

N2 - To reveal the meso-mechanical mechanism of shear behaviors in the graded crushed rocks (GCRs), which are heterogeneous in geometry and widely used in the flexible pavement, a numerical technique was proposed to simulate the geometric anisotropy of the GCRs using randomly generated models. Then, studies on meso-mechanical responses during the loading were performed through the biaxial shear test and California bearing ratio (CBR) test. The results showed that the changes of both friction and anisotropy had a similar trend with the particle size enlarging in the dense assembly, which maintain stable when the size is less than 3.0 mm. In addition, the breaking sieve (BS) between coarse and fine aggregates was six times of the base diameter (0.8 mm). The predicted shear properties in macrostructure were in good agreement with those laboratory measurements. For the shear behaviors, the fractures and force chains were mainly distributed in the area of action that was limited by force size and side boundary.

AB - To reveal the meso-mechanical mechanism of shear behaviors in the graded crushed rocks (GCRs), which are heterogeneous in geometry and widely used in the flexible pavement, a numerical technique was proposed to simulate the geometric anisotropy of the GCRs using randomly generated models. Then, studies on meso-mechanical responses during the loading were performed through the biaxial shear test and California bearing ratio (CBR) test. The results showed that the changes of both friction and anisotropy had a similar trend with the particle size enlarging in the dense assembly, which maintain stable when the size is less than 3.0 mm. In addition, the breaking sieve (BS) between coarse and fine aggregates was six times of the base diameter (0.8 mm). The predicted shear properties in macrostructure were in good agreement with those laboratory measurements. For the shear behaviors, the fractures and force chains were mainly distributed in the area of action that was limited by force size and side boundary.

KW - Biaxial shear test

KW - California bearing ratio

KW - Discrete element method

KW - Geometric anisotropy

KW - Graded crushed rocks

KW - Shear behavior

UR - https://www.scopus.com/pages/publications/85049110437

UR - https://www.sciencedirect.com/science/article/pii/S0950061818315927?via%3Dihub

U2 - 10.1016/j.conbuildmat.2018.06.188

DO - 10.1016/j.conbuildmat.2018.06.188

M3 - Article

AN - SCOPUS:85049110437

SN - 0950-0618

VL - 183

SP - 346

EP - 355

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this