Study on feasibility of the subgrade filled with weathered phyllite

Author

Xuesong, Mao ; Xiaozhong, Zheng ; Leigang, Zhou ; Ma Biao ; Jie, Liang

Author_Institution

Key Lab. for Special Area Highway Eng. of Minist. of Educ., Chang´´an Univ., Xi´´an, China

fYear

2011

fDate

16-18 Dec. 2011

Firstpage

2078

Lastpage

2081

Abstract

To ensure the stability of the subgrade filled with weathered phyllite, we conducted a study on a new field test method of wetting deformation of the subgrade filled with weathered phyllite. On the foundation of the analysis on the physical and mechanical properties of the weathered phyllite, we evaluated the feasibility of the subgrade filled with weathered phyllite. We put up test section in the eastern Ankang section of the highway from Shiyan to Tianshui, took bearing plate field tests before and after immersion on the test road, analyzed the mechanism of the subgrade wetting deformation, got the result that wetting deformation is directly proportional to amount of water infiltration and resulted in the attenuation of bearing capacity of subgrade. Through the analysis of the results, we gave a further evaluation of the feasibility of the subgrade filled with weathered phyllite.

Keywords

foundations; geotechnical engineering; mechanical stability; plates (structures); roads; rocks; Shiyan; Tianshui; bearing plate field tests; eastern Ankang section; highway; mechanical properties; subgrade bearing capacity; subgrade stability; water infiltration; weathered phyllite; wetting deformation; Roads; Rocks; Stability analysis; Testing; Water; amount of water infiltration; feasibility; weathered phyllite; wetting deformation;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation, Mechanical, and Electrical Engineering (TMEE), 2011 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4577-1700-0

Type

conf

DOI

10.1109/TMEE.2011.6199626

Filename

6199626