Influence of Maximum Particle Diameter on the Mechanical Behavior of Soil-Rock Mixtures

Joint Authors

He, Zhuoling
Zhang, Junyun
Sun, Tao

Source

Advances in Civil Engineering

Issue

Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2020-09-14

Country of Publication

Egypt

No. of Pages

9

Main Subjects

Civil Engineering

Abstract EN

With the steady development of the development of the western region in China, the construction of mountain highways has developed rapidly, and the soil-rock mixed filler, as an excellent filler, is widely used in the subgrade filling of mountain highways.

Unlike ordinary fine-grained soil, the source of the soil-rock mixtures (S-RMs) is not unique, and the particle size difference is large and the water content is not uniform, resulting in very complicated mechanical properties.

But the current highway embankment codes are still mainly established on the fine-grained soil.

It is not fully applicable to soil-rock filled embankment.

Based on soil-rock filled embankment engineering practice, this research uses a large-scale direct shear test to research the mechanical characteristics of the S-RMs with different maximum particle diameters.

According to the large-scale direct shear test of S-RMs with different maximum particle diameters, the shear displacement vs shear stress curve, shear dilation, and strength characteristics with maximum particle diameter were analyzed.

Results demonstrate that whether secondary hardening occurs mainly depends on the normal stress and the maximum particle diameter of the filler.

At different maximum particle diameters, the horizontal displacement vs vertical displacement curves of the S-RMs can be roughly divided into continuous shearing and beginning of shearing and quick dilation.

And the shear strength increases with the increase of the maximum particle diameter.

Moreover, the cohesion decreases first and then increases with the increase of the maximum particle diameter, and the internal friction angle increases with the increase of the maximum particle diameter.

Therefore, some RBs with large particle diameter added to filler can effectively improve the shear strength of the S-RMs, which may be valuable for realistic engineering.

American Psychological Association (APA)

He, Zhuoling& Zhang, Junyun& Sun, Tao. 2020. Influence of Maximum Particle Diameter on the Mechanical Behavior of Soil-Rock Mixtures. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1123937

Modern Language Association (MLA)

He, Zhuoling…[et al.]. Influence of Maximum Particle Diameter on the Mechanical Behavior of Soil-Rock Mixtures. Advances in Civil Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1123937

American Medical Association (AMA)

He, Zhuoling& Zhang, Junyun& Sun, Tao. Influence of Maximum Particle Diameter on the Mechanical Behavior of Soil-Rock Mixtures. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1123937

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1123937