International Journal of Civil Engineering

en Undrained triaxial shear behavior of grouted carbonate sands Soil Mechanics Classic Soil Mechanics Classic Research Paper Research Paper The effects of cementation and the physical properties of grains on the shear behavior of grouted sands are investigated in this paper. The consolidated-undrained triaxial shear behavior of three grouted carbonate sands with different physical properties, including particle size distribution, particle shape and void ratio, was studied. Two sands were obtained from the north shores of the Persian Gulf, south of Iran, called Hormoz and Kish islands sands, and one sand was obtained from the south beaches of England and called Rock beach sand. The selected sands were grouted using a chemical grout of sodium silicate and tested after one month of curing. Test results showed that the effect of bonding on the shear behavior and strength depends on the bond strength and confining pressure. In addition, the shear behavior, yield strength and shear strength of grouted sands under constant conditions, including the initial relative density, bonds strength, confining pressure and loading, were affected by the physical properties of the sands. Furthermore, the parameters of the Mohr-Coulomb shear strength failure envelope, including the cohesion and internal friction angle of grouted sands under constant conditions, were affected by the physical properties and structure of the soils. Carbonate sands, Triaxial test, Grouting, Sodium silicate 307 314 http://ijce.iust.ac.ir/browse.php?a_code=A-10-199-1&slc_lang=en&sid=1 M. Hassanlourad mhassanlourad@iust.ac.ir 1800319475328460010228 1800319475328460010228 Yes Imam Khomeini International University H. Salehzadeh salehzadeh@iust.ac.ir 1800319475328460010229 1800319475328460010229 No Iran University of Science and Technology H. Shahnazari hshahnazari@iust.ac.ir 1800319475328460010230 1800319475328460010230 No Iran University of Science and Technology