A hydraulic composition including water; a hydraulic binder; at least one setting retarder; and at least one polysaccharide; the weight ratio of the water/hydraulic binder being greater than 1.5, methods of using the composition as a mixture in a grout and a corresponding method for preparing a grout and the grout thereby obtained.

A hydraulic composition including water; a hydraulic binder; at least one setting retarder; and at least one polysaccharide; the weight ratio of the water/hydraulic binder being greater than 1.5, methods of using the composition as a mixture in a grout and a corresponding method for preparing a grout and the grout thereby obtained.

A hydraulic composition including water; a hydraulic binder; at least one setting retarder; and at least one polysaccharide; the weight ratio of the water/hydraulic binder being greater than 1.5, methods of using the composition as a mixture in a grout and a corresponding method for preparing a grout and the grout thereby obtained.

A hydraulic composition including water; a hydraulic binder; at least one setting retarder; and at least one polysaccharide; the weight ratio of the water/hydraulic binder being greater than 1.5, methods of using the composition as a mixture in a grout and a corresponding method for preparing a grout and the grout thereby obtained.