STUDY OF NEW GROUTING TECHNIQUES IN REPAIR AND STRENGTHENING OF SOFT SOILS

Demands for soft land strengthening and contaminated soil solidification have been increased due to the explosion population, development of technology, industry, and transportation systems. Deep mixing methods (DMMs) are conventional methods for strengthening the soft soils. Cement (or binder) with soil have being mixed in this method. Injection of cement and additives with a high pressure and displacing the gases and liquids from within soil grains in combination with DMMs is a new wedding technique for increasing the efficiency of soil stabilization.In this paper, different kinds of deep mixing methods (conventional and new techniques) were studied. By considering the type and alternative layers of soil, load size, the situation, cost and type of project selecting the right stabilizing method for repair and strengthening of soft soils recommended and it is believed that it could prompt engineers to resolve soil strengthening difficulties from the geotechnic-al view point.

کلیدواژه ها:

grouting ، stabilizing ، injection ، mixing ، soft soil ، cement and binder