Behavior of uncemented soils and grouted soils before maximum shear strength

Christophe Dano (1) , Pierre-Yves Hicher (1)

1 GeM - Institut de Recherche en Génie Civil et Mécanique

The results of triaxial tests carried out on both uncemented sands and sands injected by a microfine cement grout are presented in order to highlight and compare the main features of their mechanical behavior. The device used to prepare homogeneous samples of grouted sands in the laboratory is first described. The effect of the grout injection on the strength properties of three granular soils is then shown. By use of bender elements, the different evolutions of the shear modulus $G_{vh,\max}$ in the small strain domain along isotropic and deviatoric stress paths are presented for both uncemented and grouted sands.

Mots clés: bender elements; grout injection; improvement; stiffness; strength

Domaines: Géotechnique

Christophe Dano, Pierre-Yves Hicher. Behavior of uncemented soils and grouted soils before maximum shear strength. Soils and Foundations, 2003, 43 (4), pp.13-20. ⟨hal-01005289⟩