Expansive potentiality of sabkha soils of Rabigh Lagoon, Saudi Arabia: a case study

  • Bader A. Hakami
  • El-Sayed Sedek Abu SeifEmail author
Original Paper


The geotechnical assessment of expansiveness potentiality of sabkha soils, Saudi Arabia has been achieved on subsurface clayey soil samples collected in Rabigh sabkha along the Red Sea throughout a variety of physical, chemical, mineralogical, and mechanical tests. The obtained results show that the studied Rabigh sabkha clays were deposited in restricted supra-tidal marine conditions. These sabkha clayey soils consist of silts (53.4 to 69.1%), clays (20.1 to 35.7%), and sands (5.457 to 9.93%) and are classified into high plasticity clays (CH) and high inorganic silts (MH). The clay mineral species (montmorillonite, illite, kaolinite, chlorite, and palygorskite) are of detrital origin except palygorskite that was formed authigentically. Based upon the activity (A), these sabkha soils are classified into active soil type. The swelling potentiality of Rabigh sabkha clays ranges from moderate to critical swell potentiality.


Sabkha soils Mineralogy Expansiveness potentiality Rabigh, Saudi Arabia 



The authors, therefore, acknowledge with thanks the Deanship of Scientific Research (DSR) for technical and financial support. Also, the authors are deeply grateful to Prof. Dr. A.M. Al-Amri (the Editor-in-Chief) and the three anonymous reviewers for insightful comments and criticism that improved this manuscript.

Funding information

This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under grant no. G-299-145-37.


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Copyright information

© Saudi Society for Geosciences 2019

Authors and Affiliations

  1. 1.Faculty of Earth SciencesKing Abdulaziz UniversityJeddahSaudi Arabia
  2. 2.Geology Department, Faculty of ScienceSohag UniversitySohagEgypt

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