Critical State Concepts For A Cemented Gravely Sand   Amir Hamidi Graduate Student, Department. of Civil Engineering, Sharif University of Technology,Tehran, Iran hamidi_am@yahoo.com Seyed Mohsen Haeri Professor, Department. of Civil Engineering, Sharif University of Technology, Tehran, Iran smhaeri@Sharif.edu
			ABSTRACT

The shear behavior of a cemented gravely sand that can be considered as the representative of Tehran alluvium has been studied using triaxial equipment. Artificially cemented samples were prepared using gypsum plaster as the cementing agent. The plaster was mixed with the base soil at the weight percentages between 1.5 and 6. The critical state concepts were used to illustrate the mechanical behavior of tested soil.

Keywords: soil; critical state concepts; gravely sand; mechanical behavior and triaxial test.

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