Deformation behaviour of some Victorian road subgrade soils under repeated loading

Nguyen, B and Mohajerani, A 2014, 'Deformation behaviour of some Victorian road subgrade soils under repeated loading', in Chun Qing Li, Sujeeva Setunge, Saman de Silva (ed.) Proceedings of the 1st International Conference on Infrastructure Failures and Consequences, ICIFC 2014, Melbourne, Australia, 16-20 July 2014, pp. 263-273.


Document type: Conference Paper
Collection: Conference Papers

Title Deformation behaviour of some Victorian road subgrade soils under repeated loading
Author(s) Nguyen, B
Mohajerani, A
Year 2014
Conference name ICIFC 2014
Conference location Melbourne, Australia
Conference dates 16-20 July 2014
Proceedings title Proceedings of the 1st International Conference on Infrastructure Failures and Consequences, ICIFC 2014
Editor(s) Chun Qing Li, Sujeeva Setunge, Saman de Silva
Publisher RMIT University
Place of publication Australia
Start page 263
End page 273
Total pages 11
Abstract The road pavement is a critical component of the transportation infrastructure. During the service life, the road pavement is continuously subjected to the loading caused by moving vehicles. A typical flexible pavement structure consists of the asphalt surface course and the underlying base and sub- base courses. The subgrade soil is the foundation of the pavement and the performance of the pavement significantly depends on the non-linear behaviour of the subgrade under the traffic loading. Therefore, an understanding of the behaviour of the subgrade soils would increase the confidence of pavement engineers in the design. Technically, under the traffic loading, the behaviour of the subgrade soils contains two parts, which are the resilient and permanent deformation. In the laboratory, resilient and permanent deformation can be determined from the repeated load triaxial test. Inherently, it is a challenge to perform the repeated load triaxial test as a routine basic test due to the complicated, time-consuming and expensive procedure. Previous studies have reported the significant influence of the subgrade soil properties and loading conditions on the resilient and permanent deformation. In this study, the resilient and permanent deformation behaviour of several fine-grained soils collected from various suburbs in Melbourne were studied. The effect of subgrade soil physical properties and stress conditions on the resilient modulus and permanent deformation for the experimental soils are examined and discussed in this paper.
Subjects Civil Geotechnical Engineering
Keyword(s) Resilient modulus
Subgrade deformation
Pavement
Fine-grained soils
Repeated load triaxial test.
ISBN 9780992557010
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