| Summary: | Deep mixing method (DSM) is a soil improvement method where weak soils are improved mechanically by forming columns in the ground via mixing the soil with a pozzolanic binder. In this method, cement or cement and lime are generally used as binding materials. The properties of soils treated with this method depend on the properties of the soil and the additive, the amount of additive and the curing time. Stress -deformation behavior of deep mixing soils is one of the most important factors determining their performance. For this reason, it is very important to determine the modulus values of DSM columns correctly. In deep soil mix design, unconfined compression strength values are usually measured in quality control experiments and correlations are used to determine the modulus values based on strength values. In this context, it is important to use correlations that take into account important parameters such as soil and binder type in order to estimate the modulus value correctly. Within the scope of this study, DSM studies in the literature were compiled and unconfined compression strength-modulus values for DSM materials were used to create a database. In this context, a total of 1090
data were collected from twelve separate studies. The database contains information on soil and binder type and amount, unconfined compression strength, modulus of elasticity and mixing method. New correlations are presented for different soil and binder types using the database. It is thought that the correlations obtained will be useful for deep soil mixing, which have been used extensively in Turkey in recent years.
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