An Analytical Review on Comparative Analysis of Ground Improvement Using Various Admixtures

Soil improvement in the most sustainable way is the need of the hour and prime importance for the modern construction industry. Most of the time, it has been observed that the soil below the foundation is not mechanically capable of withstanding the load from the structure, and it might cause the failure/collapse of the structure. To prevent it, various significant soil improvement techniques have been introduced, such as mechanical stabilisation, thermal methods, use of admixtures etc. Ground improvement using admixtures involves the addition of various chemical alternatives to the subsoil to enhance its loadbearing capacity. These procedures also give long-term sustainability regarding the soil's bearing capacity. Various potential scholarly works on ground improvement have been done, i.e., the addition of bentonite, kaolinite, bitumen, rice husk ash, pond ash, lime, and cement into the soil, which has been intensely reviewed. From the combined observed experimental results of several researchers presented in this paper, it can be identified how much improvement of a particular soil property can be made by adding several types of admixtures. A clear idea can be generated as to which type of admixture is most suitable for the improvement of a particular type of soil and which soil properties can be improved by the addition of that admixture.