Stabilization of Expansive Sub-grade Soil Using Hydrated Lime and Dolomitic-Limestone By-Product (DLP)

  • Amira H. Ahmed
  • Asmaa M. HassanEmail author
  • Hani A. Lotfi
Original Paper


The existence of expansive subgrades is a challenge especially during pavement construction due to its drastic volume changes. In this case, the common practice is to remove the natural expansive soil and replace it with non-expansive soil. However, this solution becomes unviable for deep long extending formations of natural expansive soils. Therefore, efforts have been done in order to improve the properties of expansive soil using different types of stabilizers. In this paper, two types of stabilizing agents are investigated: hydrated lime and dolomitic limestone by-product. A testing program is selected to evaluate the swell-strength behaviour of artificially prepared sand-expansive clay mixtures. The testing program includes Atterberg limits, modified Proctor, free swell, CBR, pH and chemical analysis tests. Moreover, the soil expansivity and strength after treatment are evaluated based on relationships proposed by literature and the Egyptian Code.


Expansive soil Stabilization Swelling potential CBR Lime DLP 



On behalf of all authors, the corresponding author states that the research did not receive any funds from any organization.

Compliance with Ethical Standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Amira H. Ahmed
    • 1
  • Asmaa M. Hassan
    • 1
    Email author
  • Hani A. Lotfi
    • 1
  1. 1.Public Works Department, Faculty of EngineeringCairo UniversityGizaEgypt

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