A Review of Mix Design Terminologies for Cement-Admixed Sandy Clay

Sathya Subramanian, Qasim Khan, Sung Moon, Taeseo Ku

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

In densely populated countries, underground construction and land reclamation could be possible options to solve the demand for land space, thus securing sustainable long-term development of the nation. For example, in Singapore, land reclamation has been widely conducted using excavated materials from underground development. The excavated materials are commonly marine clays that contain sandy soils. To improve the mechanical properties of these soft soils, cement-treated soil stabilization is popularly adopted. In fact, many researchers have investigated the properties of pure cemented clay or pure cemented sand using conventional design parameters such as water content (water/solids) and cement content (cement/dry soil). However, can these terminologies be still used to accurately examine the role of sand in cemented sandy clay mixtures? Through unconfined compression testing, it is herein shown that the use of existing mix design approaches in the literature cannot properly explain the variation of strength with sand content for cemented sandy clay mixtures. A new mix design approach is thus proposed in this study, which ensures that the role of sand in a cemented clay matrix can be quantified.
Original languageEnglish
Title of host publicationProceedings of the 8th International Symposium on Deformation Characteristics of Geomaterials 3rd - 6th September 2023
Publication statusPublished - 2023

Keywords

  • cemented sandy clay
  • land reclamation
  • unconfined compressive strength
  • water to cement ratio

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