Abstract

Improvement of the mechanical properties and behavior of soils by permeation grouting, using either suspensions or chemical solutions, is frequently required to ensure the safe construction and operation of many structures. Suspensions have lower costs and are harmless to the environment but cannot be injected into soils with gradations finer than coarse sands. Chemical solutions can be injected in fine sands or coarse silts but are more expensive and some of them pose a health and environmental hazard. This paper summarizes the main observations that emerged from the review of the available literature concerning (a) the use of cement suspensions for soil improvement by injection impregnation and (b) the scope of fine cement suspensions in terms of their embeddability and penetrability.

Keywords:Permeation grouting; Suspensions; Injectability, Fine-grained cements