• 1. Introduction

  • 2. The Suction Index Method

  • 3. Estimation of Moisture Content Changes

  • 4. Prediction of Equilibrium Strengths of Road Subgrades

  • 5. Comparison of Estimated and Measured CBR Values

  • 6. Effect of Subgrade Strength on the Structural Performance of Flexible Pavements

  • 7. Summary and Conclusions

  • 8. Acknowledgements

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