Compressive strength of compacted clay-sand mixes

Faseel Suleman Khan, Shahid Azam, Mavinakere Eshwaraiah Raghunandan, Ryan Clark

Research output: Contribution to journalArticleResearchpeer-review

26 Citations (Scopus)

Abstract

The use of sand to improve the strength of natural clays provides a viable alternative for civil infrastructure construction involving earthwork. The main objective of this note was to investigate the compressive strength of compacted clay-sand mixes. A natural clay of high plasticity was mixed with 20% and 40% sand (SP) and their compaction and strength properties were determined. Results indicated that the investigated materials exhibited a brittle behaviour on the dry side of optimum and a ductile behaviour on the wet side of optimum. For each material, the compressive strength increased with an increase in density following a power law function. Conversely, the compressive strength increased with decreasing water content of the material following a similar function. Finally, the compressive strength decreased with an increase in sand content because of increased material heterogeneity and loss of sand grains from the sides during shearing.

Original languageEnglish
Article number921815
Number of pages7
JournalAdvances in Materials Science and Engineering
Volume2014
DOIs
Publication statusPublished - 2014

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