Volume 11, Issue 3 (2011)                   MCEJ 2011, 11(3): 123-123 | Back to browse issues page

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1- Scool of Engineering, Tarbiat Moallem University, P.O.Box 15614, Tehran, P.O.Box 15614, Iran
2- School of Engineering, Tarbiat Moallem University, P.O.Box 15614, Tehran, Iran
Abstract:   (8769 Views)
Most of previous researches on cemented soils involve their shear strength characteristics. In present research, compressibility and volume change behaviour of cemented sandy soils is investigated. Babolsar fine sand is used as the base material besides gypsum and Portland cement as cementing agents. Samples were made in three cement contents of 0.5, 1 and 1.5 percents. Also three different relative densities of 30, 50 and 70 percents were considered in sample preparation. Oedometer tests were conducted for one dimensional compression and triaxial apparatus was used for isotropic compression tests. Yield strength of cemented bonds besides initial bulk modulus have been determined and effects of cement content, cement type and relative density have been investigated. Results of experimental studies showed that the mentioned parameters strongly influence the compressibility behaviour of cemented sand. Initial bulk modulus increases with relative density and cement content. Cement type is another important parameter in compressibility behaviour of cemented sand. Yield strength and bulk modulus of samples made with gypsum are more compared to those prepared with Portland cement. Finally, the strength of cemented bonds increases with cement content and decreases with relative density.

Received: 2010/09/5 | Accepted: 2011/10/23 | Published: 2013/05/20

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