Shear modulus and damping ratio of grouted sand |
| |
| Authors: | Estelle Delfosse-Ribay Irini Djeran-Maigre Richard Cabrillac Daniel Gouvenot |
| |
| Institution: | a Laboratoire de Modélisation, Matériaux et Structures (LM2S), CNRS UMR 7143, Université de Cergy-Pontoise, 5 mail Gay Lussac, 95031, Cergy-Pontoise cedex, France;b Soletanche-Bachy, 6 rue de Watford, 92005, Nanterre cedex, France |
| |
| Abstract: | An experimental comparative study of three different grouted sands in terms of their effects on the values of two dynamic properties is presented. The dynamic properties studied are the shear modulus and the damping ratio which are determined with resonant column tests and cyclic triaxial tests. The behaviour of a pure Fontainebleau sand is compared with the behaviour of a Fontainebleau sand grouted with a silicate grout, a micro-fine cement grout and a mineral grout. The effects of the grouting treatment, the type of grout, the confining pressure, and the strains, on the shear modulus and the damping ratio are studied. The test results have shown that grouting improves the stiffness of the sand especially for small strains. Whatever the type of material, confining stress improves the shear modulus whereas it has a negligible effect on the damping ratio. When strain increases, the shear modulus decreases and the damping ratio increases. |
| |
| Keywords: | Shear modulus Damping ratio Sand Grouted sand Silicate grout Cement-based grout Mineral-based grout Resonant column Cyclic triaxial test |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
