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Effect of GCL on Moisture and Temperature Fields of Highway Subgrade Through Numerical Analysis

  • Feng Liu
  • Zhibin Liu
  • Feng Yin
  • Shujian Zhang
  • Yi Wang
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

The performance of highway subgrade is affected not only by soil type but also by other parameters such as water and temperature. Distribution and variation of temperature in subgrade affect the stability of highway subgrade in seasonal frozen area. In seasonal frozen areas, water accumulation in highway subgrade can cause frost heave and thaw settlement, which will finally affect the function of road structures. Due to its waterproof performance, geosynthetic clay liner (GCL) is mainly used in engineering practice as an effective material for sealing, isolation and leakage prevention. So it may be introduced into highway subgrade to provide possible moisture and temperature adjustment. Through water and heat coupling analysis of two kinds of subgrade models, following conclusions can be drawn. GCL can effectively prevent rainfall infiltration and adjust moisture field of subgrade. GCL in the subgrade can significantly decrease the maximum freezing depth and thereby reduce the frost damage risk of the highway subgrade in Seasonal frozen soil area.

Keywords

GCL Moisture and temperature fields Numerical simulation 

Notes

Acknowledgement

This research was sponsored by the National Natural Science Foundation of China (No. 41672280, 41330641). The authors are also grateful for the financial supports from Traffic Science and technology projects of Inner Mongolia and Jilin Province.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Feng Liu
    • 1
  • Zhibin Liu
    • 1
  • Feng Yin
    • 2
  • Shujian Zhang
    • 3
  • Yi Wang
    • 1
  1. 1.School of TransportationSoutheast UniversityNanjingChina
  2. 2.Inner Mongolia Highway Construction and Development Co. Ltd.HohhotChina
  3. 3.Jilin Provincial High Class Highway Construction BureauChangchunChina

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