Various methods of stabilizing dredged and carbonated soils

Dredged soils are obtained from capital dredging (resulting from the construction of hydraulic structures) or maintenance dredging (from the maintenance of hydraulic structures). Due to the large volume, uselessness and low pollution of these soils; researchers are exploring using these materials as soil alternatives. Poor bearing capacity, fragmentation characteristic, and difficult behavior prediction; are some problems of carbonated soils. Also non-carbonated dredged soils often don’t have proper technical characteristics. The Persian Gulf has coasts covered with carbonated sediments, also forced to dredge. Due to the great importance of this waterway in the world economy and energy supply, as well as the problematic nature of its carbonated soil (for example, creating problems for oil extraction platforms); The Persian Gulf’s carbonated soil, like dredged soil, needs to be improved. One of the most widely used soil improvement methods is stabilization. Besides the use of new materials (such as polymer and fiber), stabilization by cement and lime are still the most common stabilization methods for variety of soils. In addition to economic value, it will also be environmental and technical importance to consider the possibility of using it in engineering structures such as road bodies as base and subbase. Soil improvement is done in various additives and methods. Depending on the type of soil and materials in each area, the appropriate stabilization method varies; therefore, the same prescription for soil stabilization cannot be proposed. This paper focuses on carbonated and dredged soils, their stabilization methods; and reviews some practical experiences of stabilizing them.