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A series of isotropic consolidated drained triaxial tests were conducted on three carbonate sands with different physical properties and particle breakage potential. Tests were performed on loose and dense ungrouted and loosely grouted specimens. Two sands were obtained from north shores of Persian Gulf, south of Iran, named Kish and Hormoz sands. Another sand was taken from south of England named Rock sand. Some of specimens were cemented using injection of a chemically grout named sodium silicate. Effects of grains physical properties on the shear behavior and strength of grouted sands under constant conditions such as initial relative density (before consolidation), grout, confining pressure and loading are studied. Tests results showed different compressibility, shear behavior, shear strength parameters, deformability and particle breakage for the studied sands. Totally, bonding the particles to each other improves the shear strength parameters and reduces the compressibility of soil. However, the three grouted sands demonstrated different shear behavior and strength response including bond strength, initial relative density and confining pressure under the same conditions due to different physical properties of grains. [ABSTRACT FROM AUTHOR]