Geochemical degradation can have a significant effect on the geotechnical properties of embankment fill materials and on the quality of drainage waters. The most susceptible materials include mudstones, weathered igneous and metamorphic rocks, and rock with a high proportion of secondary minerals. Geochemical information should be collected at the site investigation stage, including from trial embankments. The design should allow for any geochemical degradation likely to occur and contractors should be made aware of the problems. Chemical monitoring should be carried out during and after construction to check the design assumptions.

  • INTRODUCTION

  • DESK STUDY

  • SITE INVESTIGATION

  • DESIGN

  • CONSTRUCTION

  • IN-SERVICE CONDITION

  • CONCLUSIONS

  • REFERENCES

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